diff options
Diffstat (limited to 'arch')
662 files changed, 10457 insertions, 6070 deletions
diff --git a/arch/Kconfig b/arch/Kconfig index c91917b50873..a5af0edd3eb8 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -673,6 +673,7 @@ config SHADOW_CALL_STACK bool "Shadow Call Stack" depends on ARCH_SUPPORTS_SHADOW_CALL_STACK depends on DYNAMIC_FTRACE_WITH_ARGS || DYNAMIC_FTRACE_WITH_REGS || !FUNCTION_GRAPH_TRACER + depends on MMU help This option enables the compiler's Shadow Call Stack, which uses a shadow stack to protect function return addresses from diff --git a/arch/alpha/kernel/smp.c b/arch/alpha/kernel/smp.c index 7439b2377df5..8e9dd63b220c 100644 --- a/arch/alpha/kernel/smp.c +++ b/arch/alpha/kernel/smp.c @@ -467,11 +467,6 @@ smp_prepare_cpus(unsigned int max_cpus) smp_num_cpus = smp_num_probed; } -void -smp_prepare_boot_cpu(void) -{ -} - int __cpu_up(unsigned int cpu, struct task_struct *tidle) { diff --git a/arch/arc/include/asm/jump_label.h b/arch/arc/include/asm/jump_label.h index 9d9618079739..a339223d9e05 100644 --- a/arch/arc/include/asm/jump_label.h +++ b/arch/arc/include/asm/jump_label.h @@ -31,7 +31,7 @@ static __always_inline bool arch_static_branch(struct static_key *key, bool branch) { - asm_volatile_goto(".balign "__stringify(JUMP_LABEL_NOP_SIZE)" \n" + asm goto(".balign "__stringify(JUMP_LABEL_NOP_SIZE)" \n" "1: \n" "nop \n" ".pushsection __jump_table, \"aw\" \n" @@ -47,7 +47,7 @@ l_yes: static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch) { - asm_volatile_goto(".balign "__stringify(JUMP_LABEL_NOP_SIZE)" \n" + asm goto(".balign "__stringify(JUMP_LABEL_NOP_SIZE)" \n" "1: \n" "b %l[l_yes] \n" ".pushsection __jump_table, \"aw\" \n" diff --git a/arch/arc/kernel/smp.c b/arch/arc/kernel/smp.c index 8d9b188caa27..b2f2c59279a6 100644 --- a/arch/arc/kernel/smp.c +++ b/arch/arc/kernel/smp.c @@ -39,11 +39,6 @@ struct plat_smp_ops __weak plat_smp_ops; /* XXX: per cpu ? Only needed once in early secondary boot */ struct task_struct *secondary_idle_tsk; -/* Called from start_kernel */ -void __init smp_prepare_boot_cpu(void) -{ -} - static int __init arc_get_cpu_map(const char *name, struct cpumask *cpumask) { unsigned long dt_root = of_get_flat_dt_root(); diff --git a/arch/arm/boot/dts/amazon/alpine.dtsi b/arch/arm/boot/dts/amazon/alpine.dtsi index ff68dfb4eb78..90bd12feac01 100644 --- a/arch/arm/boot/dts/amazon/alpine.dtsi +++ b/arch/arm/boot/dts/amazon/alpine.dtsi @@ -167,7 +167,6 @@ msix: msix@fbe00000 { compatible = "al,alpine-msix"; reg = <0x0 0xfbe00000 0x0 0x100000>; - interrupt-controller; msi-controller; al,msi-base-spi = <96>; al,msi-num-spis = <64>; diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-bletchley.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-bletchley.dts index e899de681f47..5be0e8fd2633 100644 --- a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-bletchley.dts +++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-bletchley.dts @@ -45,8 +45,8 @@ num-chipselects = <1>; cs-gpios = <&gpio0 ASPEED_GPIO(Z, 0) GPIO_ACTIVE_LOW>; - tpmdev@0 { - compatible = "tcg,tpm_tis-spi"; + tpm@0 { + compatible = "infineon,slb9670", "tcg,tpm_tis-spi"; spi-max-frequency = <33000000>; reg = <0>; }; diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-wedge400.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-wedge400.dts index a677c827e758..5a8169bbda87 100644 --- a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-wedge400.dts +++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-wedge400.dts @@ -80,8 +80,8 @@ gpio-miso = <&gpio ASPEED_GPIO(R, 5) GPIO_ACTIVE_HIGH>; num-chipselects = <1>; - tpmdev@0 { - compatible = "tcg,tpm_tis-spi"; + tpm@0 { + compatible = "infineon,slb9670", "tcg,tpm_tis-spi"; spi-max-frequency = <33000000>; reg = <0>; }; diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-opp-tacoma.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-opp-tacoma.dts index 3f6010ef2b86..213023bc5aec 100644 --- a/arch/arm/boot/dts/aspeed/aspeed-bmc-opp-tacoma.dts +++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-opp-tacoma.dts @@ -456,7 +456,7 @@ status = "okay"; tpm: tpm@2e { - compatible = "tcg,tpm-tis-i2c"; + compatible = "nuvoton,npct75x", "tcg,tpm-tis-i2c"; reg = <0x2e>; }; }; diff --git a/arch/arm/boot/dts/aspeed/aspeed-g4.dtsi b/arch/arm/boot/dts/aspeed/aspeed-g4.dtsi index 530491ae5eb2..857cb26ed6d7 100644 --- a/arch/arm/boot/dts/aspeed/aspeed-g4.dtsi +++ b/arch/arm/boot/dts/aspeed/aspeed-g4.dtsi @@ -466,7 +466,6 @@ i2c0: i2c-bus@40 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x40 0x40>; compatible = "aspeed,ast2400-i2c-bus"; @@ -482,7 +481,6 @@ i2c1: i2c-bus@80 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x80 0x40>; compatible = "aspeed,ast2400-i2c-bus"; @@ -498,7 +496,6 @@ i2c2: i2c-bus@c0 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0xc0 0x40>; compatible = "aspeed,ast2400-i2c-bus"; @@ -515,7 +512,6 @@ i2c3: i2c-bus@100 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x100 0x40>; compatible = "aspeed,ast2400-i2c-bus"; @@ -532,7 +528,6 @@ i2c4: i2c-bus@140 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x140 0x40>; compatible = "aspeed,ast2400-i2c-bus"; @@ -549,7 +544,6 @@ i2c5: i2c-bus@180 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x180 0x40>; compatible = "aspeed,ast2400-i2c-bus"; @@ -566,7 +560,6 @@ i2c6: i2c-bus@1c0 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x1c0 0x40>; compatible = "aspeed,ast2400-i2c-bus"; @@ -583,7 +576,6 @@ i2c7: i2c-bus@300 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x300 0x40>; compatible = "aspeed,ast2400-i2c-bus"; @@ -600,7 +592,6 @@ i2c8: i2c-bus@340 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x340 0x40>; compatible = "aspeed,ast2400-i2c-bus"; @@ -617,7 +608,6 @@ i2c9: i2c-bus@380 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x380 0x40>; compatible = "aspeed,ast2400-i2c-bus"; @@ -634,7 +624,6 @@ i2c10: i2c-bus@3c0 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x3c0 0x40>; compatible = "aspeed,ast2400-i2c-bus"; @@ -651,7 +640,6 @@ i2c11: i2c-bus@400 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x400 0x40>; compatible = "aspeed,ast2400-i2c-bus"; @@ -668,7 +656,6 @@ i2c12: i2c-bus@440 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x440 0x40>; compatible = "aspeed,ast2400-i2c-bus"; @@ -685,7 +672,6 @@ i2c13: i2c-bus@480 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x480 0x40>; compatible = "aspeed,ast2400-i2c-bus"; diff --git a/arch/arm/boot/dts/aspeed/aspeed-g5.dtsi b/arch/arm/boot/dts/aspeed/aspeed-g5.dtsi index 04f98d1dbb97..e6f3cf3c721e 100644 --- a/arch/arm/boot/dts/aspeed/aspeed-g5.dtsi +++ b/arch/arm/boot/dts/aspeed/aspeed-g5.dtsi @@ -363,6 +363,7 @@ interrupts = <40>; reg = <0x1e780200 0x0100>; clocks = <&syscon ASPEED_CLK_APB>; + #interrupt-cells = <2>; interrupt-controller; bus-frequency = <12000000>; pinctrl-names = "default"; @@ -594,7 +595,6 @@ i2c0: i2c-bus@40 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x40 0x40>; compatible = "aspeed,ast2500-i2c-bus"; @@ -610,7 +610,6 @@ i2c1: i2c-bus@80 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x80 0x40>; compatible = "aspeed,ast2500-i2c-bus"; @@ -626,7 +625,6 @@ i2c2: i2c-bus@c0 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0xc0 0x40>; compatible = "aspeed,ast2500-i2c-bus"; @@ -643,7 +641,6 @@ i2c3: i2c-bus@100 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x100 0x40>; compatible = "aspeed,ast2500-i2c-bus"; @@ -660,7 +657,6 @@ i2c4: i2c-bus@140 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x140 0x40>; compatible = "aspeed,ast2500-i2c-bus"; @@ -677,7 +673,6 @@ i2c5: i2c-bus@180 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x180 0x40>; compatible = "aspeed,ast2500-i2c-bus"; @@ -694,7 +689,6 @@ i2c6: i2c-bus@1c0 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x1c0 0x40>; compatible = "aspeed,ast2500-i2c-bus"; @@ -711,7 +705,6 @@ i2c7: i2c-bus@300 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x300 0x40>; compatible = "aspeed,ast2500-i2c-bus"; @@ -728,7 +721,6 @@ i2c8: i2c-bus@340 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x340 0x40>; compatible = "aspeed,ast2500-i2c-bus"; @@ -745,7 +737,6 @@ i2c9: i2c-bus@380 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x380 0x40>; compatible = "aspeed,ast2500-i2c-bus"; @@ -762,7 +753,6 @@ i2c10: i2c-bus@3c0 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x3c0 0x40>; compatible = "aspeed,ast2500-i2c-bus"; @@ -779,7 +769,6 @@ i2c11: i2c-bus@400 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x400 0x40>; compatible = "aspeed,ast2500-i2c-bus"; @@ -796,7 +785,6 @@ i2c12: i2c-bus@440 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x440 0x40>; compatible = "aspeed,ast2500-i2c-bus"; @@ -813,7 +801,6 @@ i2c13: i2c-bus@480 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x480 0x40>; compatible = "aspeed,ast2500-i2c-bus"; diff --git a/arch/arm/boot/dts/aspeed/aspeed-g6.dtsi b/arch/arm/boot/dts/aspeed/aspeed-g6.dtsi index c4d1faade8be..29f94696d8b1 100644 --- a/arch/arm/boot/dts/aspeed/aspeed-g6.dtsi +++ b/arch/arm/boot/dts/aspeed/aspeed-g6.dtsi @@ -474,6 +474,7 @@ reg = <0x1e780500 0x100>; interrupts = <GIC_SPI 51 IRQ_TYPE_LEVEL_HIGH>; clocks = <&syscon ASPEED_CLK_APB2>; + #interrupt-cells = <2>; interrupt-controller; bus-frequency = <12000000>; pinctrl-names = "default"; @@ -488,6 +489,7 @@ reg = <0x1e780600 0x100>; interrupts = <GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>; clocks = <&syscon ASPEED_CLK_APB2>; + #interrupt-cells = <2>; interrupt-controller; bus-frequency = <12000000>; pinctrl-names = "default"; @@ -902,7 +904,6 @@ i2c0: i2c-bus@80 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x80 0x80>; compatible = "aspeed,ast2600-i2c-bus"; clocks = <&syscon ASPEED_CLK_APB2>; @@ -917,7 +918,6 @@ i2c1: i2c-bus@100 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x100 0x80>; compatible = "aspeed,ast2600-i2c-bus"; clocks = <&syscon ASPEED_CLK_APB2>; @@ -932,7 +932,6 @@ i2c2: i2c-bus@180 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x180 0x80>; compatible = "aspeed,ast2600-i2c-bus"; clocks = <&syscon ASPEED_CLK_APB2>; @@ -947,7 +946,6 @@ i2c3: i2c-bus@200 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x200 0x80>; compatible = "aspeed,ast2600-i2c-bus"; clocks = <&syscon ASPEED_CLK_APB2>; @@ -962,7 +960,6 @@ i2c4: i2c-bus@280 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x280 0x80>; compatible = "aspeed,ast2600-i2c-bus"; clocks = <&syscon ASPEED_CLK_APB2>; @@ -977,7 +974,6 @@ i2c5: i2c-bus@300 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x300 0x80>; compatible = "aspeed,ast2600-i2c-bus"; clocks = <&syscon ASPEED_CLK_APB2>; @@ -992,7 +988,6 @@ i2c6: i2c-bus@380 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x380 0x80>; compatible = "aspeed,ast2600-i2c-bus"; clocks = <&syscon ASPEED_CLK_APB2>; @@ -1007,7 +1002,6 @@ i2c7: i2c-bus@400 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x400 0x80>; compatible = "aspeed,ast2600-i2c-bus"; clocks = <&syscon ASPEED_CLK_APB2>; @@ -1022,7 +1016,6 @@ i2c8: i2c-bus@480 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x480 0x80>; compatible = "aspeed,ast2600-i2c-bus"; clocks = <&syscon ASPEED_CLK_APB2>; @@ -1037,7 +1030,6 @@ i2c9: i2c-bus@500 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x500 0x80>; compatible = "aspeed,ast2600-i2c-bus"; clocks = <&syscon ASPEED_CLK_APB2>; @@ -1052,7 +1044,6 @@ i2c10: i2c-bus@580 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x580 0x80>; compatible = "aspeed,ast2600-i2c-bus"; clocks = <&syscon ASPEED_CLK_APB2>; @@ -1067,7 +1058,6 @@ i2c11: i2c-bus@600 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x600 0x80>; compatible = "aspeed,ast2600-i2c-bus"; clocks = <&syscon ASPEED_CLK_APB2>; @@ -1082,7 +1072,6 @@ i2c12: i2c-bus@680 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x680 0x80>; compatible = "aspeed,ast2600-i2c-bus"; clocks = <&syscon ASPEED_CLK_APB2>; @@ -1097,7 +1086,6 @@ i2c13: i2c-bus@700 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x700 0x80>; compatible = "aspeed,ast2600-i2c-bus"; clocks = <&syscon ASPEED_CLK_APB2>; @@ -1112,7 +1100,6 @@ i2c14: i2c-bus@780 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x780 0x80>; compatible = "aspeed,ast2600-i2c-bus"; clocks = <&syscon ASPEED_CLK_APB2>; @@ -1127,7 +1114,6 @@ i2c15: i2c-bus@800 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; reg = <0x800 0x80>; compatible = "aspeed,ast2600-i2c-bus"; clocks = <&syscon ASPEED_CLK_APB2>; diff --git a/arch/arm/boot/dts/aspeed/ast2600-facebook-netbmc-common.dtsi b/arch/arm/boot/dts/aspeed/ast2600-facebook-netbmc-common.dtsi index 31590d3186a2..00e5887c926f 100644 --- a/arch/arm/boot/dts/aspeed/ast2600-facebook-netbmc-common.dtsi +++ b/arch/arm/boot/dts/aspeed/ast2600-facebook-netbmc-common.dtsi @@ -35,8 +35,8 @@ gpio-mosi = <&gpio0 ASPEED_GPIO(X, 4) GPIO_ACTIVE_HIGH>; gpio-miso = <&gpio0 ASPEED_GPIO(X, 5) GPIO_ACTIVE_HIGH>; - tpmdev@0 { - compatible = "tcg,tpm_tis-spi"; + tpm@0 { + compatible = "infineon,slb9670", "tcg,tpm_tis-spi"; spi-max-frequency = <33000000>; reg = <0>; }; diff --git a/arch/arm/boot/dts/broadcom/bcm-cygnus.dtsi b/arch/arm/boot/dts/broadcom/bcm-cygnus.dtsi index f9f79ed82518..07ca0d993c9f 100644 --- a/arch/arm/boot/dts/broadcom/bcm-cygnus.dtsi +++ b/arch/arm/boot/dts/broadcom/bcm-cygnus.dtsi @@ -167,6 +167,7 @@ #gpio-cells = <2>; gpio-controller; interrupt-controller; + #interrupt-cells = <2>; interrupt-parent = <&mailbox>; interrupts = <0>; }; @@ -247,6 +248,7 @@ gpio-controller; interrupts = <GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>; interrupt-controller; + #interrupt-cells = <2>; }; i2c1: i2c@1800b000 { @@ -518,6 +520,7 @@ gpio-controller; interrupt-controller; + #interrupt-cells = <2>; interrupts = <GIC_SPI 174 IRQ_TYPE_LEVEL_HIGH>; gpio-ranges = <&pinctrl 0 42 1>, <&pinctrl 1 44 3>, diff --git a/arch/arm/boot/dts/broadcom/bcm-hr2.dtsi b/arch/arm/boot/dts/broadcom/bcm-hr2.dtsi index 788a6806191a..75545b10ef2f 100644 --- a/arch/arm/boot/dts/broadcom/bcm-hr2.dtsi +++ b/arch/arm/boot/dts/broadcom/bcm-hr2.dtsi @@ -200,6 +200,7 @@ gpio-controller; ngpios = <4>; interrupt-controller; + #interrupt-cells = <2>; interrupts = <GIC_SPI 93 IRQ_TYPE_LEVEL_HIGH>; }; diff --git a/arch/arm/boot/dts/broadcom/bcm-nsp.dtsi b/arch/arm/boot/dts/broadcom/bcm-nsp.dtsi index 9d20ba3b1ffb..6a4482c93167 100644 --- a/arch/arm/boot/dts/broadcom/bcm-nsp.dtsi +++ b/arch/arm/boot/dts/broadcom/bcm-nsp.dtsi @@ -180,6 +180,7 @@ gpio-controller; ngpios = <32>; interrupt-controller; + #interrupt-cells = <2>; interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>; gpio-ranges = <&pinctrl 0 0 32>; }; @@ -352,6 +353,7 @@ gpio-controller; ngpios = <4>; interrupt-controller; + #interrupt-cells = <2>; interrupts = <GIC_SPI 87 IRQ_TYPE_LEVEL_HIGH>; }; diff --git a/arch/arm/boot/dts/intel/ixp/intel-ixp42x-gateway-7001.dts b/arch/arm/boot/dts/intel/ixp/intel-ixp42x-gateway-7001.dts index 4d70f6afd13a..6d5e69035f94 100644 --- a/arch/arm/boot/dts/intel/ixp/intel-ixp42x-gateway-7001.dts +++ b/arch/arm/boot/dts/intel/ixp/intel-ixp42x-gateway-7001.dts @@ -60,6 +60,8 @@ * We have slots (IDSEL) 1 and 2 with one assigned IRQ * each handling all IRQs. */ + #interrupt-cells = <1>; + interrupt-map-mask = <0xf800 0 0 7>; interrupt-map = /* IDSEL 1 */ <0x0800 0 0 1 &gpio0 11 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 1 is irq 11 */ diff --git a/arch/arm/boot/dts/intel/ixp/intel-ixp42x-goramo-multilink.dts b/arch/arm/boot/dts/intel/ixp/intel-ixp42x-goramo-multilink.dts index 9ec0169bacf8..5f4c849915db 100644 --- a/arch/arm/boot/dts/intel/ixp/intel-ixp42x-goramo-multilink.dts +++ b/arch/arm/boot/dts/intel/ixp/intel-ixp42x-goramo-multilink.dts @@ -89,6 +89,8 @@ * The slots have Ethernet, Ethernet, NEC and MPCI. * The IDSELs are 11, 12, 13, 14. */ + #interrupt-cells = <1>; + interrupt-map-mask = <0xf800 0 0 7>; interrupt-map = /* IDSEL 11 - Ethernet A */ <0x5800 0 0 1 &gpio0 4 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 11 is irq 4 */ diff --git a/arch/arm/boot/dts/marvell/kirkwood-l-50.dts b/arch/arm/boot/dts/marvell/kirkwood-l-50.dts index dffb9f84e67c..c841eb8e7fb1 100644 --- a/arch/arm/boot/dts/marvell/kirkwood-l-50.dts +++ b/arch/arm/boot/dts/marvell/kirkwood-l-50.dts @@ -65,6 +65,7 @@ gpio2: gpio-expander@20 { #gpio-cells = <2>; #interrupt-cells = <2>; + interrupt-controller; compatible = "semtech,sx1505q"; reg = <0x20>; @@ -79,6 +80,7 @@ gpio3: gpio-expander@21 { #gpio-cells = <2>; #interrupt-cells = <2>; + interrupt-controller; compatible = "semtech,sx1505q"; reg = <0x21>; diff --git a/arch/arm/boot/dts/nuvoton/nuvoton-wpcm450.dtsi b/arch/arm/boot/dts/nuvoton/nuvoton-wpcm450.dtsi index fd671c7a1e5d..6e1f0f164cb4 100644 --- a/arch/arm/boot/dts/nuvoton/nuvoton-wpcm450.dtsi +++ b/arch/arm/boot/dts/nuvoton/nuvoton-wpcm450.dtsi @@ -120,6 +120,7 @@ interrupts = <2 IRQ_TYPE_LEVEL_HIGH>, <3 IRQ_TYPE_LEVEL_HIGH>, <4 IRQ_TYPE_LEVEL_HIGH>; + #interrupt-cells = <2>; interrupt-controller; }; @@ -128,6 +129,7 @@ gpio-controller; #gpio-cells = <2>; interrupts = <5 IRQ_TYPE_LEVEL_HIGH>; + #interrupt-cells = <2>; interrupt-controller; }; diff --git a/arch/arm/boot/dts/nvidia/tegra30-apalis-v1.1.dtsi b/arch/arm/boot/dts/nvidia/tegra30-apalis-v1.1.dtsi index 1640763fd4af..ff0d684622f7 100644 --- a/arch/arm/boot/dts/nvidia/tegra30-apalis-v1.1.dtsi +++ b/arch/arm/boot/dts/nvidia/tegra30-apalis-v1.1.dtsi @@ -997,7 +997,6 @@ compatible = "st,stmpe811"; reg = <0x41>; irq-gpio = <&gpio TEGRA_GPIO(V, 0) GPIO_ACTIVE_LOW>; - interrupt-controller; id = <0>; blocks = <0x5>; irq-trigger = <0x1>; diff --git a/arch/arm/boot/dts/nvidia/tegra30-apalis.dtsi b/arch/arm/boot/dts/nvidia/tegra30-apalis.dtsi index 3b6fad273cab..d38f1dd38a90 100644 --- a/arch/arm/boot/dts/nvidia/tegra30-apalis.dtsi +++ b/arch/arm/boot/dts/nvidia/tegra30-apalis.dtsi @@ -980,7 +980,6 @@ compatible = "st,stmpe811"; reg = <0x41>; irq-gpio = <&gpio TEGRA_GPIO(V, 0) GPIO_ACTIVE_LOW>; - interrupt-controller; id = <0>; blocks = <0x5>; irq-trigger = <0x1>; diff --git a/arch/arm/boot/dts/nvidia/tegra30-colibri.dtsi b/arch/arm/boot/dts/nvidia/tegra30-colibri.dtsi index 4eb526fe9c55..81c8a5fd92cc 100644 --- a/arch/arm/boot/dts/nvidia/tegra30-colibri.dtsi +++ b/arch/arm/boot/dts/nvidia/tegra30-colibri.dtsi @@ -861,7 +861,6 @@ compatible = "st,stmpe811"; reg = <0x41>; irq-gpio = <&gpio TEGRA_GPIO(V, 0) GPIO_ACTIVE_LOW>; - interrupt-controller; id = <0>; blocks = <0x5>; irq-trigger = <0x1>; diff --git a/arch/arm/boot/dts/nxp/imx/imx6q-b850v3.dts b/arch/arm/boot/dts/nxp/imx/imx6q-b850v3.dts index db8c332df6a1..cad112e05475 100644 --- a/arch/arm/boot/dts/nxp/imx/imx6q-b850v3.dts +++ b/arch/arm/boot/dts/nxp/imx/imx6q-b850v3.dts @@ -227,7 +227,6 @@ #address-cells = <3>; #size-cells = <2>; - #interrupt-cells = <1>; bridge@2,1 { compatible = "pci10b5,8605"; @@ -235,7 +234,6 @@ #address-cells = <3>; #size-cells = <2>; - #interrupt-cells = <1>; /* Intel Corporation I210 Gigabit Network Connection */ ethernet@3,0 { @@ -250,7 +248,6 @@ #address-cells = <3>; #size-cells = <2>; - #interrupt-cells = <1>; /* Intel Corporation I210 Gigabit Network Connection */ switch_nic: ethernet@4,0 { diff --git a/arch/arm/boot/dts/nxp/imx/imx6q-bx50v3.dtsi b/arch/arm/boot/dts/nxp/imx/imx6q-bx50v3.dtsi index 99f4f6ac71d4..c1ae7c47b442 100644 --- a/arch/arm/boot/dts/nxp/imx/imx6q-bx50v3.dtsi +++ b/arch/arm/boot/dts/nxp/imx/imx6q-bx50v3.dtsi @@ -245,6 +245,7 @@ reg = <0x74>; gpio-controller; #gpio-cells = <2>; + #interrupt-cells = <2>; interrupt-controller; interrupt-parent = <&gpio2>; interrupts = <3 IRQ_TYPE_LEVEL_LOW>; @@ -390,7 +391,6 @@ #address-cells = <3>; #size-cells = <2>; - #interrupt-cells = <1>; }; }; diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-apalis.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-apalis.dtsi index 2ae93f57fe5a..ea40623d12e5 100644 --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-apalis.dtsi +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-apalis.dtsi @@ -626,7 +626,6 @@ blocks = <0x5>; id = <0>; interrupts = <10 IRQ_TYPE_LEVEL_LOW>; - interrupt-controller; interrupt-parent = <&gpio4>; irq-trigger = <0x1>; pinctrl-names = "default"; diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-colibri.dtsi index 55c90f6393ad..d3a7a6eeb8e0 100644 --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-colibri.dtsi +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-colibri.dtsi @@ -550,7 +550,6 @@ blocks = <0x5>; interrupts = <20 IRQ_TYPE_LEVEL_LOW>; interrupt-parent = <&gpio6>; - interrupt-controller; id = <0>; irq-trigger = <0x1>; pinctrl-names = "default"; diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-emcon.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-emcon.dtsi index a63e73adc1fc..42b2ba23aefc 100644 --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-emcon.dtsi +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-emcon.dtsi @@ -225,7 +225,6 @@ pinctrl-0 = <&pinctrl_pmic>; interrupt-parent = <&gpio2>; interrupts = <8 IRQ_TYPE_LEVEL_LOW>; - interrupt-controller; onkey { compatible = "dlg,da9063-onkey"; diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi index 113974520d54..c0c47adc5866 100644 --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi @@ -124,6 +124,7 @@ reg = <0x58>; interrupt-parent = <&gpio2>; interrupts = <9 IRQ_TYPE_LEVEL_LOW>; /* active-low GPIO2_9 */ + #interrupt-cells = <2>; interrupt-controller; regulators { diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi index 86b4269e0e01..85e278eb2016 100644 --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi @@ -100,6 +100,7 @@ interrupt-parent = <&gpio1>; interrupts = <2 IRQ_TYPE_LEVEL_LOW>; interrupt-controller; + #interrupt-cells = <2>; gpio-controller; #gpio-cells = <2>; diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-phytec-tauri.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-phytec-tauri.dtsi index 44cc4ff1d0df..d12fb44aeb14 100644 --- a/arch/arm/boot/dts/nxp/imx/imx6ull-phytec-tauri.dtsi +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-phytec-tauri.dtsi @@ -116,7 +116,7 @@ tpm_tis: tpm@1 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_tpm>; - compatible = "tcg,tpm_tis-spi"; + compatible = "infineon,slb9670", "tcg,tpm_tis-spi"; reg = <1>; spi-max-frequency = <20000000>; interrupt-parent = <&gpio5>; diff --git a/arch/arm/boot/dts/nxp/imx/imx7d-flex-concentrator.dts b/arch/arm/boot/dts/nxp/imx/imx7d-flex-concentrator.dts index 3a723843d562..9984b343cdf0 100644 --- a/arch/arm/boot/dts/nxp/imx/imx7d-flex-concentrator.dts +++ b/arch/arm/boot/dts/nxp/imx/imx7d-flex-concentrator.dts @@ -130,7 +130,7 @@ * TCG specification - Section 6.4.1 Clocking: * TPM shall support a SPI clock frequency range of 10-24 MHz. */ - st33htph: tpm-tis@0 { + st33htph: tpm@0 { compatible = "st,st33htpm-spi", "tcg,tpm_tis-spi"; reg = <0>; spi-max-frequency = <24000000>; diff --git a/arch/arm/boot/dts/nxp/imx/imx7d-pico-dwarf.dts b/arch/arm/boot/dts/nxp/imx/imx7d-pico-dwarf.dts index 12361fcbe24a..1b965652291b 100644 --- a/arch/arm/boot/dts/nxp/imx/imx7d-pico-dwarf.dts +++ b/arch/arm/boot/dts/nxp/imx/imx7d-pico-dwarf.dts @@ -63,6 +63,7 @@ gpio-controller; #gpio-cells = <2>; #interrupt-cells = <2>; + interrupt-controller; reg = <0x25>; }; diff --git a/arch/arm/boot/dts/nxp/imx/imx7s.dtsi b/arch/arm/boot/dts/nxp/imx/imx7s.dtsi index ebf7befcc11e..9c81c6baa2d3 100644 --- a/arch/arm/boot/dts/nxp/imx/imx7s.dtsi +++ b/arch/arm/boot/dts/nxp/imx/imx7s.dtsi @@ -834,16 +834,6 @@ <&clks IMX7D_LCDIF_PIXEL_ROOT_CLK>; clock-names = "pix", "axi"; status = "disabled"; - - port { - #address-cells = <1>; - #size-cells = <0>; - - lcdif_out_mipi_dsi: endpoint@0 { - reg = <0>; - remote-endpoint = <&mipi_dsi_in_lcdif>; - }; - }; }; mipi_csi: mipi-csi@30750000 { @@ -895,22 +885,6 @@ samsung,esc-clock-frequency = <20000000>; samsung,pll-clock-frequency = <24000000>; status = "disabled"; - - ports { - #address-cells = <1>; - #size-cells = <0>; - - port@0 { - reg = <0>; - #address-cells = <1>; - #size-cells = <0>; - - mipi_dsi_in_lcdif: endpoint@0 { - reg = <0>; - remote-endpoint = <&lcdif_out_mipi_dsi>; - }; - }; - }; }; }; diff --git a/arch/arm/boot/dts/nxp/vf/vf610-zii-dev-rev-b.dts b/arch/arm/boot/dts/nxp/vf/vf610-zii-dev-rev-b.dts index b0ed68af0546..029f49be40e3 100644 --- a/arch/arm/boot/dts/nxp/vf/vf610-zii-dev-rev-b.dts +++ b/arch/arm/boot/dts/nxp/vf/vf610-zii-dev-rev-b.dts @@ -338,6 +338,7 @@ reg = <0x22>; gpio-controller; #gpio-cells = <2>; + #interrupt-cells = <2>; interrupt-controller; interrupt-parent = <&gpio3>; interrupts = <2 IRQ_TYPE_LEVEL_LOW>; diff --git a/arch/arm/boot/dts/qcom/qcom-sdx55.dtsi b/arch/arm/boot/dts/qcom/qcom-sdx55.dtsi index 2045fc779f88..27429d0fedfb 100644 --- a/arch/arm/boot/dts/qcom/qcom-sdx55.dtsi +++ b/arch/arm/boot/dts/qcom/qcom-sdx55.dtsi @@ -340,10 +340,10 @@ "msi8"; #interrupt-cells = <1>; interrupt-map-mask = <0 0 0 0x7>; - interrupt-map = <0 0 0 1 &intc 0 0 0 141 IRQ_TYPE_LEVEL_HIGH>, /* int_a */ - <0 0 0 2 &intc 0 0 0 142 IRQ_TYPE_LEVEL_HIGH>, /* int_b */ - <0 0 0 3 &intc 0 0 0 143 IRQ_TYPE_LEVEL_HIGH>, /* int_c */ - <0 0 0 4 &intc 0 0 0 144 IRQ_TYPE_LEVEL_HIGH>; /* int_d */ + interrupt-map = <0 0 0 1 &intc 0 141 IRQ_TYPE_LEVEL_HIGH>, /* int_a */ + <0 0 0 2 &intc 0 142 IRQ_TYPE_LEVEL_HIGH>, /* int_b */ + <0 0 0 3 &intc 0 143 IRQ_TYPE_LEVEL_HIGH>, /* int_c */ + <0 0 0 4 &intc 0 144 IRQ_TYPE_LEVEL_HIGH>; /* int_d */ clocks = <&gcc GCC_PCIE_PIPE_CLK>, <&gcc GCC_PCIE_AUX_CLK>, diff --git a/arch/arm/boot/dts/renesas/r8a7790-lager.dts b/arch/arm/boot/dts/renesas/r8a7790-lager.dts index 2fba4d084001..8590981245a6 100644 --- a/arch/arm/boot/dts/renesas/r8a7790-lager.dts +++ b/arch/arm/boot/dts/renesas/r8a7790-lager.dts @@ -447,6 +447,7 @@ interrupt-parent = <&irqc0>; interrupts = <2 IRQ_TYPE_LEVEL_LOW>; interrupt-controller; + #interrupt-cells = <2>; rtc { compatible = "dlg,da9063-rtc"; diff --git a/arch/arm/boot/dts/renesas/r8a7790-stout.dts b/arch/arm/boot/dts/renesas/r8a7790-stout.dts index f9bc5b4f019d..683f7395fab0 100644 --- a/arch/arm/boot/dts/renesas/r8a7790-stout.dts +++ b/arch/arm/boot/dts/renesas/r8a7790-stout.dts @@ -347,6 +347,7 @@ interrupt-parent = <&irqc0>; interrupts = <2 IRQ_TYPE_LEVEL_LOW>; interrupt-controller; + #interrupt-cells = <2>; onkey { compatible = "dlg,da9063-onkey"; diff --git a/arch/arm/boot/dts/renesas/r8a7791-koelsch.dts b/arch/arm/boot/dts/renesas/r8a7791-koelsch.dts index e9c13bb03772..0efd9f98c75a 100644 --- a/arch/arm/boot/dts/renesas/r8a7791-koelsch.dts +++ b/arch/arm/boot/dts/renesas/r8a7791-koelsch.dts @@ -819,6 +819,7 @@ interrupt-parent = <&irqc0>; interrupts = <2 IRQ_TYPE_LEVEL_LOW>; interrupt-controller; + #interrupt-cells = <2>; rtc { compatible = "dlg,da9063-rtc"; diff --git a/arch/arm/boot/dts/renesas/r8a7791-porter.dts b/arch/arm/boot/dts/renesas/r8a7791-porter.dts index 7e8bc06715f6..93c86e921645 100644 --- a/arch/arm/boot/dts/renesas/r8a7791-porter.dts +++ b/arch/arm/boot/dts/renesas/r8a7791-porter.dts @@ -413,6 +413,7 @@ interrupt-parent = <&irqc0>; interrupts = <2 IRQ_TYPE_LEVEL_LOW>; interrupt-controller; + #interrupt-cells = <2>; watchdog { compatible = "dlg,da9063-watchdog"; diff --git a/arch/arm/boot/dts/renesas/r8a7792-blanche.dts b/arch/arm/boot/dts/renesas/r8a7792-blanche.dts index 4f9838cf97ee..540a9ad28f28 100644 --- a/arch/arm/boot/dts/renesas/r8a7792-blanche.dts +++ b/arch/arm/boot/dts/renesas/r8a7792-blanche.dts @@ -381,6 +381,7 @@ interrupt-parent = <&irqc>; interrupts = <2 IRQ_TYPE_LEVEL_LOW>; interrupt-controller; + #interrupt-cells = <2>; rtc { compatible = "dlg,da9063-rtc"; diff --git a/arch/arm/boot/dts/renesas/r8a7793-gose.dts b/arch/arm/boot/dts/renesas/r8a7793-gose.dts index 1744fdbf9e0c..1ea6c757893b 100644 --- a/arch/arm/boot/dts/renesas/r8a7793-gose.dts +++ b/arch/arm/boot/dts/renesas/r8a7793-gose.dts @@ -759,6 +759,7 @@ interrupt-parent = <&irqc0>; interrupts = <2 IRQ_TYPE_LEVEL_LOW>; interrupt-controller; + #interrupt-cells = <2>; rtc { compatible = "dlg,da9063-rtc"; diff --git a/arch/arm/boot/dts/renesas/r8a7794-alt.dts b/arch/arm/boot/dts/renesas/r8a7794-alt.dts index c0d067df22a0..b5ecafbb2e4d 100644 --- a/arch/arm/boot/dts/renesas/r8a7794-alt.dts +++ b/arch/arm/boot/dts/renesas/r8a7794-alt.dts @@ -453,6 +453,7 @@ interrupt-parent = <&gpio3>; interrupts = <31 IRQ_TYPE_LEVEL_LOW>; interrupt-controller; + #interrupt-cells = <2>; rtc { compatible = "dlg,da9063-rtc"; diff --git a/arch/arm/boot/dts/renesas/r8a7794-silk.dts b/arch/arm/boot/dts/renesas/r8a7794-silk.dts index 43d480a7f3ea..595e074085eb 100644 --- a/arch/arm/boot/dts/renesas/r8a7794-silk.dts +++ b/arch/arm/boot/dts/renesas/r8a7794-silk.dts @@ -439,6 +439,7 @@ interrupt-parent = <&gpio3>; interrupts = <31 IRQ_TYPE_LEVEL_LOW>; interrupt-controller; + #interrupt-cells = <2>; onkey { compatible = "dlg,da9063-onkey"; diff --git a/arch/arm/boot/dts/rockchip/rv1108.dtsi b/arch/arm/boot/dts/rockchip/rv1108.dtsi index abf3006f0a84..f3291f3bbc6f 100644 --- a/arch/arm/boot/dts/rockchip/rv1108.dtsi +++ b/arch/arm/boot/dts/rockchip/rv1108.dtsi @@ -196,7 +196,6 @@ pwm4: pwm@10280000 { compatible = "rockchip,rv1108-pwm", "rockchip,rk3288-pwm"; reg = <0x10280000 0x10>; - interrupts = <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>; clocks = <&cru SCLK_PWM>, <&cru PCLK_PWM>; clock-names = "pwm", "pclk"; pinctrl-names = "default"; @@ -208,7 +207,6 @@ pwm5: pwm@10280010 { compatible = "rockchip,rv1108-pwm", "rockchip,rk3288-pwm"; reg = <0x10280010 0x10>; - interrupts = <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>; clocks = <&cru SCLK_PWM>, <&cru PCLK_PWM>; clock-names = "pwm", "pclk"; pinctrl-names = "default"; @@ -220,7 +218,6 @@ pwm6: pwm@10280020 { compatible = "rockchip,rv1108-pwm", "rockchip,rk3288-pwm"; reg = <0x10280020 0x10>; - interrupts = <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>; clocks = <&cru SCLK_PWM>, <&cru PCLK_PWM>; clock-names = "pwm", "pclk"; pinctrl-names = "default"; @@ -232,7 +229,6 @@ pwm7: pwm@10280030 { compatible = "rockchip,rv1108-pwm", "rockchip,rk3288-pwm"; reg = <0x10280030 0x10>; - interrupts = <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>; clocks = <&cru SCLK_PWM>, <&cru PCLK_PWM>; clock-names = "pwm", "pclk"; pinctrl-names = "default"; @@ -386,7 +382,6 @@ pwm0: pwm@20040000 { compatible = "rockchip,rv1108-pwm", "rockchip,rk3288-pwm"; reg = <0x20040000 0x10>; - interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>; clocks = <&cru SCLK_PWM0_PMU>, <&cru PCLK_PWM0_PMU>; clock-names = "pwm", "pclk"; pinctrl-names = "default"; @@ -398,7 +393,6 @@ pwm1: pwm@20040010 { compatible = "rockchip,rv1108-pwm", "rockchip,rk3288-pwm"; reg = <0x20040010 0x10>; - interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>; clocks = <&cru SCLK_PWM0_PMU>, <&cru PCLK_PWM0_PMU>; clock-names = "pwm", "pclk"; pinctrl-names = "default"; @@ -410,7 +404,6 @@ pwm2: pwm@20040020 { compatible = "rockchip,rv1108-pwm", "rockchip,rk3288-pwm"; reg = <0x20040020 0x10>; - interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>; clocks = <&cru SCLK_PWM0_PMU>, <&cru PCLK_PWM0_PMU>; clock-names = "pwm", "pclk"; pinctrl-names = "default"; @@ -422,7 +415,6 @@ pwm3: pwm@20040030 { compatible = "rockchip,rv1108-pwm", "rockchip,rk3288-pwm"; reg = <0x20040030 0x10>; - interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>; clocks = <&cru SCLK_PWM0_PMU>, <&cru PCLK_PWM0_PMU>; clock-names = "pwm", "pclk"; pinctrl-names = "default"; diff --git a/arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi b/arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi index d7954ff466b4..e5254e32aa8f 100644 --- a/arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi +++ b/arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi @@ -434,6 +434,7 @@ }; &fimd { + samsung,invert-vclk; status = "okay"; }; diff --git a/arch/arm/boot/dts/st/stm32429i-eval.dts b/arch/arm/boot/dts/st/stm32429i-eval.dts index 576235ec3c51..afa417b34b25 100644 --- a/arch/arm/boot/dts/st/stm32429i-eval.dts +++ b/arch/arm/boot/dts/st/stm32429i-eval.dts @@ -222,7 +222,6 @@ reg = <0x42>; interrupts = <8 3>; interrupt-parent = <&gpioi>; - interrupt-controller; wakeup-source; stmpegpio: stmpe_gpio { diff --git a/arch/arm/boot/dts/st/stm32mp157c-dk2.dts b/arch/arm/boot/dts/st/stm32mp157c-dk2.dts index 510cca5acb79..7a701f7ef0c7 100644 --- a/arch/arm/boot/dts/st/stm32mp157c-dk2.dts +++ b/arch/arm/boot/dts/st/stm32mp157c-dk2.dts @@ -64,7 +64,6 @@ reg = <0x38>; interrupts = <2 2>; interrupt-parent = <&gpiof>; - interrupt-controller; touchscreen-size-x = <480>; touchscreen-size-y = <800>; status = "okay"; diff --git a/arch/arm/boot/dts/ti/omap/am335x-moxa-uc-2100-common.dtsi b/arch/arm/boot/dts/ti/omap/am335x-moxa-uc-2100-common.dtsi index b8730aa52ce6..a59331aa58e5 100644 --- a/arch/arm/boot/dts/ti/omap/am335x-moxa-uc-2100-common.dtsi +++ b/arch/arm/boot/dts/ti/omap/am335x-moxa-uc-2100-common.dtsi @@ -217,7 +217,7 @@ pinctrl-names = "default"; pinctrl-0 = <&spi1_pins>; - tpm_spi_tis@0 { + tpm@0 { compatible = "tcg,tpm_tis-spi"; reg = <0>; spi-max-frequency = <500000>; diff --git a/arch/arm/boot/dts/ti/omap/am5729-beagleboneai.dts b/arch/arm/boot/dts/ti/omap/am5729-beagleboneai.dts index c8e55642f9c6..3e834fc7e370 100644 --- a/arch/arm/boot/dts/ti/omap/am5729-beagleboneai.dts +++ b/arch/arm/boot/dts/ti/omap/am5729-beagleboneai.dts @@ -415,7 +415,6 @@ reg = <0x41>; interrupts = <30 IRQ_TYPE_LEVEL_LOW>; interrupt-parent = <&gpio2>; - interrupt-controller; id = <0>; blocks = <0x5>; irq-trigger = <0x1>; diff --git a/arch/arm/configs/imx_v6_v7_defconfig b/arch/arm/configs/imx_v6_v7_defconfig index 0a90583f9f01..8f9dbe8d9029 100644 --- a/arch/arm/configs/imx_v6_v7_defconfig +++ b/arch/arm/configs/imx_v6_v7_defconfig @@ -297,6 +297,7 @@ CONFIG_FB_MODE_HELPERS=y CONFIG_LCD_CLASS_DEVICE=y CONFIG_LCD_L4F00242T03=y CONFIG_LCD_PLATFORM=y +CONFIG_BACKLIGHT_CLASS_DEVICE=y CONFIG_BACKLIGHT_PWM=y CONFIG_BACKLIGHT_GPIO=y CONFIG_FRAMEBUFFER_CONSOLE=y diff --git a/arch/arm/include/asm/elf.h b/arch/arm/include/asm/elf.h index d68101655b74..9f21e170320f 100644 --- a/arch/arm/include/asm/elf.h +++ b/arch/arm/include/asm/elf.h @@ -4,7 +4,6 @@ #include <asm/auxvec.h> #include <asm/hwcap.h> -#include <asm/vdso_datapage.h> /* * ELF register definitions.. diff --git a/arch/arm/include/asm/jump_label.h b/arch/arm/include/asm/jump_label.h index e12d7d096fc0..e4eb54f6cd9f 100644 --- a/arch/arm/include/asm/jump_label.h +++ b/arch/arm/include/asm/jump_label.h @@ -11,7 +11,7 @@ static __always_inline bool arch_static_branch(struct static_key *key, bool branch) { - asm_volatile_goto("1:\n\t" + asm goto("1:\n\t" WASM(nop) "\n\t" ".pushsection __jump_table, \"aw\"\n\t" ".word 1b, %l[l_yes], %c0\n\t" @@ -25,7 +25,7 @@ l_yes: static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch) { - asm_volatile_goto("1:\n\t" + asm goto("1:\n\t" WASM(b) " %l[l_yes]\n\t" ".pushsection __jump_table, \"aw\"\n\t" ".word 1b, %l[l_yes], %c0\n\t" diff --git a/arch/arm/include/asm/vdso_datapage.h b/arch/arm/include/asm/vdso_datapage.h deleted file mode 100644 index bef68f59928d..000000000000 --- a/arch/arm/include/asm/vdso_datapage.h +++ /dev/null @@ -1,26 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * Adapted from arm64 version. - * - * Copyright (C) 2012 ARM Limited - */ -#ifndef __ASM_VDSO_DATAPAGE_H -#define __ASM_VDSO_DATAPAGE_H - -#ifdef __KERNEL__ - -#ifndef __ASSEMBLY__ - -#include <vdso/datapage.h> -#include <asm/page.h> - -union vdso_data_store { - struct vdso_data data[CS_BASES]; - u8 page[PAGE_SIZE]; -}; - -#endif /* !__ASSEMBLY__ */ - -#endif /* __KERNEL__ */ - -#endif /* __ASM_VDSO_DATAPAGE_H */ diff --git a/arch/arm/kernel/asm-offsets.c b/arch/arm/kernel/asm-offsets.c index 219cbc7e5d13..4915662842ff 100644 --- a/arch/arm/kernel/asm-offsets.c +++ b/arch/arm/kernel/asm-offsets.c @@ -21,10 +21,12 @@ #include <asm/mpu.h> #include <asm/procinfo.h> #include <asm/suspend.h> -#include <asm/vdso_datapage.h> #include <asm/hardware/cache-l2x0.h> #include <linux/kbuild.h> #include <linux/arm-smccc.h> + +#include <vdso/datapage.h> + #include "signal.h" /* diff --git a/arch/arm/kernel/vdso.c b/arch/arm/kernel/vdso.c index f297d66a8a76..d499ad461b00 100644 --- a/arch/arm/kernel/vdso.c +++ b/arch/arm/kernel/vdso.c @@ -21,7 +21,6 @@ #include <asm/cacheflush.h> #include <asm/page.h> #include <asm/vdso.h> -#include <asm/vdso_datapage.h> #include <clocksource/arm_arch_timer.h> #include <vdso/helpers.h> #include <vdso/vsyscall.h> @@ -35,9 +34,6 @@ extern char vdso_start[], vdso_end[]; /* Total number of pages needed for the data and text portions of the VDSO. */ unsigned int vdso_total_pages __ro_after_init; -/* - * The VDSO data page. - */ static union vdso_data_store vdso_data_store __page_aligned_data; struct vdso_data *vdso_data = vdso_data_store.data; diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c index 71b113976420..8b1ec60a9a46 100644 --- a/arch/arm/mach-ep93xx/core.c +++ b/arch/arm/mach-ep93xx/core.c @@ -339,6 +339,7 @@ static struct gpiod_lookup_table ep93xx_i2c_gpiod_table = { GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), GPIO_LOOKUP_IDX("G", 0, NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), + { } }, }; diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c index e96fb40b9cc3..07565b593ed6 100644 --- a/arch/arm/mm/fault.c +++ b/arch/arm/mm/fault.c @@ -298,6 +298,8 @@ do_page_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs) goto done; } count_vm_vma_lock_event(VMA_LOCK_RETRY); + if (fault & VM_FAULT_MAJOR) + flags |= FAULT_FLAG_TRIED; /* Quick path to respond to signals */ if (fault_signal_pending(fault, regs)) { diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index 47ecc4cff9d2..a88cdf910687 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -195,7 +195,7 @@ vdso_prepare: prepare0 include/generated/vdso-offsets.h arch/arm64/kernel/vdso/vdso.so ifdef CONFIG_COMPAT_VDSO $(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso32 \ - include/generated/vdso32-offsets.h arch/arm64/kernel/vdso32/vdso.so + arch/arm64/kernel/vdso32/vdso.so endif endif diff --git a/arch/arm64/boot/dts/allwinner/Makefile b/arch/arm64/boot/dts/allwinner/Makefile index 91d505b385de..1f1f8d865d0e 100644 --- a/arch/arm64/boot/dts/allwinner/Makefile +++ b/arch/arm64/boot/dts/allwinner/Makefile @@ -42,5 +42,6 @@ dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-bigtreetech-cb1-manta.dtb dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-bigtreetech-pi.dtb dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-orangepi-zero2.dtb dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-x96-mate.dtb +dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h618-orangepi-zero2w.dtb dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h618-orangepi-zero3.dtb dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h618-transpeed-8k618-t.dtb diff --git a/arch/arm64/boot/dts/amazon/alpine-v2.dtsi b/arch/arm64/boot/dts/amazon/alpine-v2.dtsi index dccbba6e7f98..dbf2dce8d1d6 100644 --- a/arch/arm64/boot/dts/amazon/alpine-v2.dtsi +++ b/arch/arm64/boot/dts/amazon/alpine-v2.dtsi @@ -145,7 +145,6 @@ msix: msix@fbe00000 { compatible = "al,alpine-msix"; reg = <0x0 0xfbe00000 0x0 0x100000>; - interrupt-controller; msi-controller; al,msi-base-spi = <160>; al,msi-num-spis = <160>; diff --git a/arch/arm64/boot/dts/amazon/alpine-v3.dtsi b/arch/arm64/boot/dts/amazon/alpine-v3.dtsi index 39481d7fd7d4..3ea178acdddf 100644 --- a/arch/arm64/boot/dts/amazon/alpine-v3.dtsi +++ b/arch/arm64/boot/dts/amazon/alpine-v3.dtsi @@ -355,7 +355,6 @@ msix: msix@fbe00000 { compatible = "al,alpine-msix"; reg = <0x0 0xfbe00000 0x0 0x100000>; - interrupt-controller; msi-controller; al,msi-base-spi = <336>; al,msi-num-spis = <959>; diff --git a/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi b/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi index a03c7667d2b6..2bfe2c431611 100644 --- a/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi +++ b/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi @@ -171,6 +171,16 @@ }; }; + gpio_intc: interrupt-controller@4080 { + compatible = "amlogic,t7-gpio-intc", + "amlogic,meson-gpio-intc"; + reg = <0x0 0x4080 0x0 0x20>; + interrupt-controller; + #interrupt-cells = <2>; + amlogic,channel-interrupts = + <10 11 12 13 14 15 16 17 18 19 20 21>; + }; + uart_a: serial@78000 { compatible = "amlogic,t7-uart", "amlogic,meson-s4-uart"; reg = <0x0 0x78000 0x0 0x18>; diff --git a/arch/arm64/boot/dts/broadcom/northstar2/ns2.dtsi b/arch/arm64/boot/dts/broadcom/northstar2/ns2.dtsi index 9dcd25ec2c04..896d1f33b5b6 100644 --- a/arch/arm64/boot/dts/broadcom/northstar2/ns2.dtsi +++ b/arch/arm64/boot/dts/broadcom/northstar2/ns2.dtsi @@ -586,6 +586,7 @@ #gpio-cells = <2>; gpio-controller; interrupt-controller; + #interrupt-cells = <2>; interrupts = <GIC_SPI 400 IRQ_TYPE_LEVEL_HIGH>; }; diff --git a/arch/arm64/boot/dts/broadcom/stingray/stingray.dtsi b/arch/arm64/boot/dts/broadcom/stingray/stingray.dtsi index f049687d6b96..d8516ec0dae7 100644 --- a/arch/arm64/boot/dts/broadcom/stingray/stingray.dtsi +++ b/arch/arm64/boot/dts/broadcom/stingray/stingray.dtsi @@ -450,6 +450,7 @@ #gpio-cells = <2>; gpio-controller; interrupt-controller; + #interrupt-cells = <2>; interrupts = <GIC_SPI 183 IRQ_TYPE_LEVEL_HIGH>; gpio-ranges = <&pinmux 0 0 16>, <&pinmux 16 71 2>, diff --git a/arch/arm64/boot/dts/exynos/google/gs101.dtsi b/arch/arm64/boot/dts/exynos/google/gs101.dtsi index 9747cb3fa03a..d838e3a7af6e 100644 --- a/arch/arm64/boot/dts/exynos/google/gs101.dtsi +++ b/arch/arm64/boot/dts/exynos/google/gs101.dtsi @@ -289,7 +289,7 @@ #clock-cells = <1>; clocks = <&cmu_top CLK_DOUT_CMU_MISC_BUS>, <&cmu_top CLK_DOUT_CMU_MISC_SSS>; - clock-names = "dout_cmu_misc_bus", "dout_cmu_misc_sss"; + clock-names = "bus", "sss"; }; watchdog_cl0: watchdog@10060000 { diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile index 2e027675d7bb..2cb0212b63c6 100644 --- a/arch/arm64/boot/dts/freescale/Makefile +++ b/arch/arm64/boot/dts/freescale/Makefile @@ -20,23 +20,41 @@ dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-ls1046a-frwy.dtb dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-ls1046a-qds.dtb dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-ls1046a-rdb.dtb dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-ls1046a-tqmls1046a-mbls10xxa.dtb +DTC_FLAGS_fsl-ls1088a-qds := -Wno-interrupt_map dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-ls1088a-qds.dtb +DTC_FLAGS_fsl-ls1088a-rdb := -Wno-interrupt_map dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-ls1088a-rdb.dtb +DTC_FLAGS_fsl-ls1088a-ten64 := -Wno-interrupt_map dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-ls1088a-ten64.dtb +DTC_FLAGS_fsl-ls1088a-tqmls1088a-mbls10xxa := -Wno-interrupt_map dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-ls1088a-tqmls1088a-mbls10xxa.dtb +DTC_FLAGS_fsl-ls2080a-qds := -Wno-interrupt_map dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-ls2080a-qds.dtb +DTC_FLAGS_fsl-ls2080a-rdb := -Wno-interrupt_map dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-ls2080a-rdb.dtb +DTC_FLAGS_fsl-ls2081a-rdb := -Wno-interrupt_map dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-ls2081a-rdb.dtb +DTC_FLAGS_fsl-ls2080a-simu := -Wno-interrupt_map dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-ls2080a-simu.dtb +DTC_FLAGS_fsl-ls2088a-qds := -Wno-interrupt_map dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-ls2088a-qds.dtb +DTC_FLAGS_fsl-ls2088a-rdb := -Wno-interrupt_map dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-ls2088a-rdb.dtb +DTC_FLAGS_fsl-lx2160a-bluebox3 := -Wno-interrupt_map dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-lx2160a-bluebox3.dtb +DTC_FLAGS_fsl-lx2160a-bluebox3-rev-a := -Wno-interrupt_map dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-lx2160a-bluebox3-rev-a.dtb +DTC_FLAGS_fsl-lx2160a-clearfog-cx := -Wno-interrupt_map dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-lx2160a-clearfog-cx.dtb +DTC_FLAGS_fsl-lx2160a-honeycomb := -Wno-interrupt_map dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-lx2160a-honeycomb.dtb +DTC_FLAGS_fsl-lx2160a-qds := -Wno-interrupt_map dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-lx2160a-qds.dtb +DTC_FLAGS_fsl-lx2160a-rdb := -Wno-interrupt_map dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-lx2160a-rdb.dtb +DTC_FLAGS_fsl-lx2162a-clearfog := -Wno-interrupt_map dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-lx2162a-clearfog.dtb +DTC_FLAGS_fsl-lx2162a-qds := -Wno-interrupt_map dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-lx2162a-qds.dtb fsl-ls1028a-qds-13bb-dtbs := fsl-ls1028a-qds.dtb fsl-ls1028a-qds-13bb.dtbo @@ -53,6 +71,7 @@ dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-ls1028a-qds-85bb.dtb dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-ls1028a-qds-899b.dtb dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-ls1028a-qds-9999.dtb +DTC_FLAGS_fsl-lx2160a-tqmlx2160a-mblx2160a := -Wno-interrupt_map fsl-lx2160a-tqmlx2160a-mblx2160a-12-11-x-dtbs := fsl-lx2160a-tqmlx2160a-mblx2160a.dtb \ fsl-lx2160a-tqmlx2160a-mblx2160a_12_x_x.dtbo \ fsl-lx2160a-tqmlx2160a-mblx2160a_x_11_x.dtbo diff --git a/arch/arm64/boot/dts/freescale/imx8mm-phygate-tauri-l.dts b/arch/arm64/boot/dts/freescale/imx8mm-phygate-tauri-l.dts index 968f475b9a96..27a902569e2a 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-phygate-tauri-l.dts +++ b/arch/arm64/boot/dts/freescale/imx8mm-phygate-tauri-l.dts @@ -120,7 +120,7 @@ }; tpm: tpm@1 { - compatible = "tcg,tpm_tis-spi"; + compatible = "infineon,slb9670", "tcg,tpm_tis-spi"; interrupts = <11 IRQ_TYPE_LEVEL_LOW>; interrupt-parent = <&gpio2>; pinctrl-names = "default"; diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx.dtsi index 3f3f2a2c89cd..752caa38eb03 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx.dtsi @@ -89,7 +89,7 @@ status = "okay"; tpm@1 { - compatible = "tcg,tpm_tis-spi"; + compatible = "atmel,attpm20p", "tcg,tpm_tis-spi"; reg = <0x1>; spi-max-frequency = <36000000>; }; diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx.dtsi index 06fed9376996..2aa6c1090fc7 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx.dtsi @@ -109,7 +109,7 @@ status = "okay"; tpm@1 { - compatible = "tcg,tpm_tis-spi"; + compatible = "atmel,attpm20p", "tcg,tpm_tis-spi"; reg = <0x1>; spi-max-frequency = <36000000>; }; diff --git a/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts b/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts index f38ee2266b25..a6b94d1957c9 100644 --- a/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts +++ b/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts @@ -128,14 +128,9 @@ pinctrl-0 = <&pinctrl_ptn5150>; status = "okay"; - connector { - compatible = "usb-c-connector"; - label = "USB-C"; - - port { - typec1_dr_sw: endpoint { - remote-endpoint = <&usb1_drd_sw>; - }; + port { + typec1_dr_sw: endpoint { + remote-endpoint = <&usb1_drd_sw>; }; }; }; diff --git a/arch/arm64/boot/dts/freescale/imx8mp-beacon-kit.dts b/arch/arm64/boot/dts/freescale/imx8mp-beacon-kit.dts index feae77e03835..a08057410bde 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp-beacon-kit.dts +++ b/arch/arm64/boot/dts/freescale/imx8mp-beacon-kit.dts @@ -234,7 +234,7 @@ status = "okay"; tpm: tpm@0 { - compatible = "infineon,slb9670"; + compatible = "infineon,slb9670", "tcg,tpm_tis-spi"; reg = <0>; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_tpm>; diff --git a/arch/arm64/boot/dts/freescale/imx8mp-data-modul-edm-sbc.dts b/arch/arm64/boot/dts/freescale/imx8mp-data-modul-edm-sbc.dts index d98a040860a4..5828c9d7821d 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp-data-modul-edm-sbc.dts +++ b/arch/arm64/boot/dts/freescale/imx8mp-data-modul-edm-sbc.dts @@ -486,7 +486,7 @@ &uart4 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_uart4>; - status = "okay"; + status = "disabled"; }; &usb3_phy0 { diff --git a/arch/arm64/boot/dts/freescale/imx8mp-dhcom-pdk3.dts b/arch/arm64/boot/dts/freescale/imx8mp-dhcom-pdk3.dts index fea67a9282f0..b749e28e5ede 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp-dhcom-pdk3.dts +++ b/arch/arm64/boot/dts/freescale/imx8mp-dhcom-pdk3.dts @@ -175,14 +175,10 @@ pinctrl-names = "default"; pinctrl-0 = <&pinctrl_ptn5150>; - connector { - compatible = "usb-c-connector"; - label = "USB-C"; - - port { - ptn5150_out_ep: endpoint { - remote-endpoint = <&dwc3_0_ep>; - }; + port { + + ptn5150_out_ep: endpoint { + remote-endpoint = <&dwc3_0_ep>; }; }; }; diff --git a/arch/arm64/boot/dts/freescale/imx8mp-dhcom-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-dhcom-som.dtsi index 4ae4fdab461e..43f1d45ccc96 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp-dhcom-som.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mp-dhcom-som.dtsi @@ -255,7 +255,7 @@ <&clk IMX8MP_AUDIO_PLL2_OUT>; assigned-clock-parents = <&clk IMX8MP_AUDIO_PLL2_OUT>; assigned-clock-rates = <13000000>, <13000000>, <156000000>; - reset-gpios = <&gpio3 21 GPIO_ACTIVE_HIGH>; + reset-gpios = <&gpio4 1 GPIO_ACTIVE_HIGH>; status = "disabled"; ports { diff --git a/arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql-mba8mpxl.dts b/arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql-mba8mpxl.dts index a2d5d19b2de0..86d3da36e4f3 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql-mba8mpxl.dts +++ b/arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql-mba8mpxl.dts @@ -184,6 +184,13 @@ enable-active-high; }; + reg_vcc_1v8: regulator-1v8 { + compatible = "regulator-fixed"; + regulator-name = "VCC_1V8"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + }; + reg_vcc_3v3: regulator-3v3 { compatible = "regulator-fixed"; regulator-name = "VCC_3V3"; @@ -480,7 +487,7 @@ clock-names = "mclk"; clocks = <&audio_blk_ctrl IMX8MP_CLK_AUDIOMIX_SAI3_MCLK1>; reset-gpios = <&gpio4 29 GPIO_ACTIVE_LOW>; - iov-supply = <®_vcc_3v3>; + iov-supply = <®_vcc_1v8>; ldoin-supply = <®_vcc_3v3>; }; diff --git a/arch/arm64/boot/dts/freescale/imx8mp-venice-gw72xx.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-venice-gw72xx.dtsi index c24587c895e1..41c79d2ebdd6 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp-venice-gw72xx.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mp-venice-gw72xx.dtsi @@ -103,7 +103,7 @@ status = "okay"; tpm@1 { - compatible = "tcg,tpm_tis-spi"; + compatible = "atmel,attpm20p", "tcg,tpm_tis-spi"; reg = <0x1>; spi-max-frequency = <36000000>; }; diff --git a/arch/arm64/boot/dts/freescale/imx8mp-venice-gw73xx.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-venice-gw73xx.dtsi index 628ffba69862..d5c400b355af 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp-venice-gw73xx.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mp-venice-gw73xx.dtsi @@ -115,7 +115,7 @@ status = "okay"; tpm@1 { - compatible = "tcg,tpm_tis-spi"; + compatible = "atmel,attpm20p", "tcg,tpm_tis-spi"; reg = <0x1>; spi-max-frequency = <36000000>; }; diff --git a/arch/arm64/boot/dts/freescale/imx8mp-venice-gw74xx.dts b/arch/arm64/boot/dts/freescale/imx8mp-venice-gw74xx.dts index 9caf7ca25444..cae586cd45bd 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp-venice-gw74xx.dts +++ b/arch/arm64/boot/dts/freescale/imx8mp-venice-gw74xx.dts @@ -196,7 +196,7 @@ status = "okay"; tpm@0 { - compatible = "tcg,tpm_tis-spi"; + compatible = "atmel,attpm20p", "tcg,tpm_tis-spi"; reg = <0x0>; spi-max-frequency = <36000000>; }; diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi index 76c73daf546b..39a550c1cd26 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi @@ -1820,7 +1820,7 @@ compatible = "fsl,imx8mp-ldb"; reg = <0x5c 0x4>, <0x128 0x4>; reg-names = "ldb", "lvds"; - clocks = <&clk IMX8MP_CLK_MEDIA_LDB>; + clocks = <&clk IMX8MP_CLK_MEDIA_LDB_ROOT>; clock-names = "ldb"; assigned-clocks = <&clk IMX8MP_CLK_MEDIA_LDB>; assigned-clock-parents = <&clk IMX8MP_VIDEO_PLL1_OUT>; diff --git a/arch/arm64/boot/dts/freescale/imx8mq-kontron-pitx-imx8m.dts b/arch/arm64/boot/dts/freescale/imx8mq-kontron-pitx-imx8m.dts index 6376417e918c..d8cf1f27c3ec 100644 --- a/arch/arm64/boot/dts/freescale/imx8mq-kontron-pitx-imx8m.dts +++ b/arch/arm64/boot/dts/freescale/imx8mq-kontron-pitx-imx8m.dts @@ -65,7 +65,7 @@ status = "okay"; tpm@0 { - compatible = "infineon,slb9670"; + compatible = "infineon,slb9670", "tcg,tpm_tis-spi"; reg = <0>; spi-max-frequency = <43000000>; }; diff --git a/arch/arm64/boot/dts/lg/lg1312.dtsi b/arch/arm64/boot/dts/lg/lg1312.dtsi index 48ec4ebec0a8..b864ffa74ea8 100644 --- a/arch/arm64/boot/dts/lg/lg1312.dtsi +++ b/arch/arm64/boot/dts/lg/lg1312.dtsi @@ -126,7 +126,6 @@ amba { #address-cells = <2>; #size-cells = <1>; - #interrupt-cells = <3>; compatible = "simple-bus"; interrupt-parent = <&gic>; diff --git a/arch/arm64/boot/dts/lg/lg1313.dtsi b/arch/arm64/boot/dts/lg/lg1313.dtsi index 3869460aa5dc..996fb39bb50c 100644 --- a/arch/arm64/boot/dts/lg/lg1313.dtsi +++ b/arch/arm64/boot/dts/lg/lg1313.dtsi @@ -126,7 +126,6 @@ amba { #address-cells = <2>; #size-cells = <1>; - #interrupt-cells = <3>; compatible = "simple-bus"; interrupt-parent = <&gic>; diff --git a/arch/arm64/boot/dts/marvell/armada-ap80x.dtsi b/arch/arm64/boot/dts/marvell/armada-ap80x.dtsi index 2c920e22cec2..7ec7c789d87e 100644 --- a/arch/arm64/boot/dts/marvell/armada-ap80x.dtsi +++ b/arch/arm64/boot/dts/marvell/armada-ap80x.dtsi @@ -138,7 +138,6 @@ odmi: odmi@300000 { compatible = "marvell,odmi-controller"; - interrupt-controller; msi-controller; marvell,odmi-frames = <4>; reg = <0x300000 0x4000>, diff --git a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi index 5506de83f61d..1b3396b1cee3 100644 --- a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi @@ -888,7 +888,7 @@ status = "okay"; cs-gpios = <&pio 86 GPIO_ACTIVE_LOW>; - cr50@0 { + tpm@0 { compatible = "google,cr50"; reg = <0>; spi-max-frequency = <1000000>; diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi index f2281250ac35..d87aab8d7a79 100644 --- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi @@ -1402,7 +1402,7 @@ pinctrl-names = "default"; pinctrl-0 = <&spi5_pins>; - cr50@0 { + tpm@0 { compatible = "google,cr50"; reg = <0>; interrupts-extended = <&pio 171 IRQ_TYPE_EDGE_RISING>; diff --git a/arch/arm64/boot/dts/mediatek/mt8195-demo.dts b/arch/arm64/boot/dts/mediatek/mt8195-demo.dts index 69c7f3954ae5..4127cb84eba4 100644 --- a/arch/arm64/boot/dts/mediatek/mt8195-demo.dts +++ b/arch/arm64/boot/dts/mediatek/mt8195-demo.dts @@ -128,6 +128,7 @@ compatible = "mediatek,mt6360"; reg = <0x34>; interrupt-controller; + #interrupt-cells = <1>; interrupts-extended = <&pio 101 IRQ_TYPE_EDGE_FALLING>; interrupt-names = "IRQB"; diff --git a/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts b/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts index ea13c4a7027c..81a82933e350 100644 --- a/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts +++ b/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts @@ -175,7 +175,7 @@ status = "okay"; phy-handle = <&mgbe0_phy>; - phy-mode = "usxgmii"; + phy-mode = "10gbase-r"; mdio { #address-cells = <1>; diff --git a/arch/arm64/boot/dts/nvidia/tegra234.dtsi b/arch/arm64/boot/dts/nvidia/tegra234.dtsi index 3f16595d099c..d1bd328892af 100644 --- a/arch/arm64/boot/dts/nvidia/tegra234.dtsi +++ b/arch/arm64/boot/dts/nvidia/tegra234.dtsi @@ -1459,7 +1459,7 @@ <&mc TEGRA234_MEMORY_CLIENT_MGBEAWR &emc>; interconnect-names = "dma-mem", "write"; iommus = <&smmu_niso0 TEGRA234_SID_MGBE>; - power-domains = <&bpmp TEGRA234_POWER_DOMAIN_MGBEA>; + power-domains = <&bpmp TEGRA234_POWER_DOMAIN_MGBEB>; status = "disabled"; }; @@ -1493,7 +1493,7 @@ <&mc TEGRA234_MEMORY_CLIENT_MGBEBWR &emc>; interconnect-names = "dma-mem", "write"; iommus = <&smmu_niso0 TEGRA234_SID_MGBE_VF1>; - power-domains = <&bpmp TEGRA234_POWER_DOMAIN_MGBEB>; + power-domains = <&bpmp TEGRA234_POWER_DOMAIN_MGBEC>; status = "disabled"; }; @@ -1527,7 +1527,7 @@ <&mc TEGRA234_MEMORY_CLIENT_MGBECWR &emc>; interconnect-names = "dma-mem", "write"; iommus = <&smmu_niso0 TEGRA234_SID_MGBE_VF2>; - power-domains = <&bpmp TEGRA234_POWER_DOMAIN_MGBEC>; + power-domains = <&bpmp TEGRA234_POWER_DOMAIN_MGBED>; status = "disabled"; }; diff --git a/arch/arm64/boot/dts/qcom/ipq6018.dtsi b/arch/arm64/boot/dts/qcom/ipq6018.dtsi index 5e1277fea725..61c8fd49c966 100644 --- a/arch/arm64/boot/dts/qcom/ipq6018.dtsi +++ b/arch/arm64/boot/dts/qcom/ipq6018.dtsi @@ -830,10 +830,10 @@ #interrupt-cells = <1>; interrupt-map-mask = <0 0 0 0x7>; - interrupt-map = <0 0 0 1 &intc 0 75 IRQ_TYPE_LEVEL_HIGH>, /* int_a */ - <0 0 0 2 &intc 0 78 IRQ_TYPE_LEVEL_HIGH>, /* int_b */ - <0 0 0 3 &intc 0 79 IRQ_TYPE_LEVEL_HIGH>, /* int_c */ - <0 0 0 4 &intc 0 83 IRQ_TYPE_LEVEL_HIGH>; /* int_d */ + interrupt-map = <0 0 0 1 &intc 0 0 0 75 IRQ_TYPE_LEVEL_HIGH>, /* int_a */ + <0 0 0 2 &intc 0 0 0 78 IRQ_TYPE_LEVEL_HIGH>, /* int_b */ + <0 0 0 3 &intc 0 0 0 79 IRQ_TYPE_LEVEL_HIGH>, /* int_c */ + <0 0 0 4 &intc 0 0 0 83 IRQ_TYPE_LEVEL_HIGH>; /* int_d */ clocks = <&gcc GCC_SYS_NOC_PCIE0_AXI_CLK>, <&gcc GCC_PCIE0_AXI_M_CLK>, diff --git a/arch/arm64/boot/dts/qcom/ipq8074.dtsi b/arch/arm64/boot/dts/qcom/ipq8074.dtsi index cf295bed3299..26441447c866 100644 --- a/arch/arm64/boot/dts/qcom/ipq8074.dtsi +++ b/arch/arm64/boot/dts/qcom/ipq8074.dtsi @@ -814,13 +814,13 @@ interrupt-names = "msi"; #interrupt-cells = <1>; interrupt-map-mask = <0 0 0 0x7>; - interrupt-map = <0 0 0 1 &intc 0 142 + interrupt-map = <0 0 0 1 &intc 0 0 142 IRQ_TYPE_LEVEL_HIGH>, /* int_a */ - <0 0 0 2 &intc 0 143 + <0 0 0 2 &intc 0 0 143 IRQ_TYPE_LEVEL_HIGH>, /* int_b */ - <0 0 0 3 &intc 0 144 + <0 0 0 3 &intc 0 0 144 IRQ_TYPE_LEVEL_HIGH>, /* int_c */ - <0 0 0 4 &intc 0 145 + <0 0 0 4 &intc 0 0 145 IRQ_TYPE_LEVEL_HIGH>; /* int_d */ clocks = <&gcc GCC_SYS_NOC_PCIE1_AXI_CLK>, @@ -876,13 +876,13 @@ interrupt-names = "msi"; #interrupt-cells = <1>; interrupt-map-mask = <0 0 0 0x7>; - interrupt-map = <0 0 0 1 &intc 0 75 + interrupt-map = <0 0 0 1 &intc 0 0 75 IRQ_TYPE_LEVEL_HIGH>, /* int_a */ - <0 0 0 2 &intc 0 78 + <0 0 0 2 &intc 0 0 78 IRQ_TYPE_LEVEL_HIGH>, /* int_b */ - <0 0 0 3 &intc 0 79 + <0 0 0 3 &intc 0 0 79 IRQ_TYPE_LEVEL_HIGH>, /* int_c */ - <0 0 0 4 &intc 0 83 + <0 0 0 4 &intc 0 0 83 IRQ_TYPE_LEVEL_HIGH>; /* int_d */ clocks = <&gcc GCC_SYS_NOC_PCIE0_AXI_CLK>, diff --git a/arch/arm64/boot/dts/qcom/msm8996.dtsi b/arch/arm64/boot/dts/qcom/msm8996.dtsi index 8d41ed261adf..ee6f87c828ae 100644 --- a/arch/arm64/boot/dts/qcom/msm8996.dtsi +++ b/arch/arm64/boot/dts/qcom/msm8996.dtsi @@ -457,25 +457,6 @@ }; }; - mpm: interrupt-controller { - compatible = "qcom,mpm"; - qcom,rpm-msg-ram = <&apss_mpm>; - interrupts = <GIC_SPI 171 IRQ_TYPE_EDGE_RISING>; - mboxes = <&apcs_glb 1>; - interrupt-controller; - #interrupt-cells = <2>; - #power-domain-cells = <0>; - interrupt-parent = <&intc>; - qcom,mpm-pin-count = <96>; - qcom,mpm-pin-map = <2 184>, /* TSENS1 upper_lower_int */ - <52 243>, /* DWC3_PRI ss_phy_irq */ - <79 347>, /* DWC3_PRI hs_phy_irq */ - <80 352>, /* DWC3_SEC hs_phy_irq */ - <81 347>, /* QUSB2_PHY_PRI DP+DM */ - <82 352>, /* QUSB2_PHY_SEC DP+DM */ - <87 326>; /* SPMI */ - }; - psci { compatible = "arm,psci-1.0"; method = "smc"; @@ -765,15 +746,8 @@ }; rpm_msg_ram: sram@68000 { - compatible = "qcom,rpm-msg-ram", "mmio-sram"; + compatible = "qcom,rpm-msg-ram"; reg = <0x00068000 0x6000>; - #address-cells = <1>; - #size-cells = <1>; - ranges = <0 0x00068000 0x7000>; - - apss_mpm: sram@1b8 { - reg = <0x1b8 0x48>; - }; }; qfprom@74000 { @@ -856,8 +830,8 @@ reg = <0x004ad000 0x1000>, /* TM */ <0x004ac000 0x1000>; /* SROT */ #qcom,sensors = <8>; - interrupts-extended = <&mpm 2 IRQ_TYPE_LEVEL_HIGH>, - <&intc GIC_SPI 430 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 430 IRQ_TYPE_LEVEL_HIGH>; interrupt-names = "uplow", "critical"; #thermal-sensor-cells = <1>; }; @@ -1363,7 +1337,6 @@ interrupts = <GIC_SPI 208 IRQ_TYPE_LEVEL_HIGH>; gpio-controller; gpio-ranges = <&tlmm 0 0 150>; - wakeup-parent = <&mpm>; #gpio-cells = <2>; interrupt-controller; #interrupt-cells = <2>; @@ -1891,7 +1864,7 @@ <0x0400a000 0x002100>; reg-names = "core", "chnls", "obsrvr", "intr", "cnfg"; interrupt-names = "periph_irq"; - interrupts-extended = <&mpm 87 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 326 IRQ_TYPE_LEVEL_HIGH>; qcom,ee = <0>; qcom,channel = <0>; #address-cells = <2>; @@ -3052,8 +3025,8 @@ #size-cells = <1>; ranges; - interrupts-extended = <&mpm 79 IRQ_TYPE_LEVEL_HIGH>, - <&mpm 52 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 347 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 243 IRQ_TYPE_LEVEL_HIGH>; interrupt-names = "hs_phy_irq", "ss_phy_irq"; clocks = <&gcc GCC_SYS_NOC_USB3_AXI_CLK>, diff --git a/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts b/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts index ffc4406422ae..41215567b3ae 100644 --- a/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts +++ b/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts @@ -563,6 +563,8 @@ }; &pcie4 { + max-link-speed = <2>; + perst-gpios = <&tlmm 141 GPIO_ACTIVE_LOW>; wake-gpios = <&tlmm 139 GPIO_ACTIVE_LOW>; diff --git a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts index def3976bd5bb..eb657e544961 100644 --- a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts +++ b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts @@ -722,6 +722,8 @@ }; &pcie4 { + max-link-speed = <2>; + perst-gpios = <&tlmm 141 GPIO_ACTIVE_LOW>; wake-gpios = <&tlmm 139 GPIO_ACTIVE_LOW>; diff --git a/arch/arm64/boot/dts/qcom/sm6115.dtsi b/arch/arm64/boot/dts/qcom/sm6115.dtsi index 160e098f1075..f9849b8befbf 100644 --- a/arch/arm64/boot/dts/qcom/sm6115.dtsi +++ b/arch/arm64/boot/dts/qcom/sm6115.dtsi @@ -1304,6 +1304,9 @@ &config_noc SLAVE_QUP_0 RPM_ALWAYS_TAG>, <&system_noc MASTER_QUP_0 RPM_ALWAYS_TAG &bimc SLAVE_EBI_CH0 RPM_ALWAYS_TAG>; + interconnect-names = "qup-core", + "qup-config", + "qup-memory"; #address-cells = <1>; #size-cells = <0>; status = "disabled"; diff --git a/arch/arm64/boot/dts/qcom/sm8650-mtp.dts b/arch/arm64/boot/dts/qcom/sm8650-mtp.dts index 9d916edb1c73..be133a3d5cbe 100644 --- a/arch/arm64/boot/dts/qcom/sm8650-mtp.dts +++ b/arch/arm64/boot/dts/qcom/sm8650-mtp.dts @@ -622,7 +622,7 @@ &tlmm { /* Reserved I/Os for NFC */ - gpio-reserved-ranges = <32 8>; + gpio-reserved-ranges = <32 8>, <74 1>; disp0_reset_n_active: disp0-reset-n-active-state { pins = "gpio133"; diff --git a/arch/arm64/boot/dts/qcom/sm8650-qrd.dts b/arch/arm64/boot/dts/qcom/sm8650-qrd.dts index 592a67a47c78..b9151c2ddf2e 100644 --- a/arch/arm64/boot/dts/qcom/sm8650-qrd.dts +++ b/arch/arm64/boot/dts/qcom/sm8650-qrd.dts @@ -659,7 +659,7 @@ &tlmm { /* Reserved I/Os for NFC */ - gpio-reserved-ranges = <32 8>; + gpio-reserved-ranges = <32 8>, <74 1>; bt_default: bt-default-state { bt-en-pins { diff --git a/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi b/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi index 3885ef3454ff..50de17e4fb3f 100644 --- a/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi +++ b/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi @@ -234,6 +234,7 @@ gpio-controller; #gpio-cells = <2>; interrupt-controller; + #interrupt-cells = <2>; interrupt-parent = <&gpio6>; interrupts = <8 IRQ_TYPE_EDGE_FALLING>; @@ -294,6 +295,7 @@ gpio-controller; #gpio-cells = <2>; interrupt-controller; + #interrupt-cells = <2>; interrupt-parent = <&gpio6>; interrupts = <4 IRQ_TYPE_EDGE_FALLING>; }; @@ -314,6 +316,7 @@ gpio-controller; #gpio-cells = <2>; interrupt-controller; + #interrupt-cells = <2>; interrupt-parent = <&gpio7>; interrupts = <3 IRQ_TYPE_EDGE_FALLING>; }; @@ -324,6 +327,7 @@ gpio-controller; #gpio-cells = <2>; interrupt-controller; + #interrupt-cells = <2>; interrupt-parent = <&gpio5>; interrupts = <9 IRQ_TYPE_EDGE_FALLING>; }; diff --git a/arch/arm64/boot/dts/rockchip/px30.dtsi b/arch/arm64/boot/dts/rockchip/px30.dtsi index d0905515399b..9137dd76e72c 100644 --- a/arch/arm64/boot/dts/rockchip/px30.dtsi +++ b/arch/arm64/boot/dts/rockchip/px30.dtsi @@ -631,6 +631,7 @@ clock-names = "spiclk", "apb_pclk"; dmas = <&dmac 12>, <&dmac 13>; dma-names = "tx", "rx"; + num-cs = <2>; pinctrl-names = "default"; pinctrl-0 = <&spi0_clk &spi0_csn &spi0_miso &spi0_mosi>; #address-cells = <1>; @@ -646,6 +647,7 @@ clock-names = "spiclk", "apb_pclk"; dmas = <&dmac 14>, <&dmac 15>; dma-names = "tx", "rx"; + num-cs = <2>; pinctrl-names = "default"; pinctrl-0 = <&spi1_clk &spi1_csn0 &spi1_csn1 &spi1_miso &spi1_mosi>; #address-cells = <1>; diff --git a/arch/arm64/boot/dts/rockchip/rk3328.dtsi b/arch/arm64/boot/dts/rockchip/rk3328.dtsi index fb5dcf6e9327..7b4c15c4a9c3 100644 --- a/arch/arm64/boot/dts/rockchip/rk3328.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3328.dtsi @@ -488,7 +488,6 @@ pwm3: pwm@ff1b0030 { compatible = "rockchip,rk3328-pwm"; reg = <0x0 0xff1b0030 0x0 0x10>; - interrupts = <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>; clocks = <&cru SCLK_PWM>, <&cru PCLK_PWM>; clock-names = "pwm", "pclk"; pinctrl-names = "default"; diff --git a/arch/arm64/boot/dts/rockchip/rk3399-gru-bob.dts b/arch/arm64/boot/dts/rockchip/rk3399-gru-bob.dts index 0f9cc042d9bf..1cba1d857c96 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399-gru-bob.dts +++ b/arch/arm64/boot/dts/rockchip/rk3399-gru-bob.dts @@ -70,7 +70,7 @@ &spi0 { status = "okay"; - cr50@0 { + tpm@0 { compatible = "google,cr50"; reg = <0>; interrupt-parent = <&gpio0>; diff --git a/arch/arm64/boot/dts/rockchip/rk3399-gru-scarlet.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-gru-scarlet.dtsi index c5e7de60c121..5846a11f0e84 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399-gru-scarlet.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3399-gru-scarlet.dtsi @@ -706,7 +706,7 @@ camera: &i2c7 { &spi2 { status = "okay"; - cr50@0 { + tpm@0 { compatible = "google,cr50"; reg = <0>; interrupt-parent = <&gpio1>; diff --git a/arch/arm64/boot/dts/rockchip/rk3588-coolpi-cm5-evb.dts b/arch/arm64/boot/dts/rockchip/rk3588-coolpi-cm5-evb.dts index d4c70835e0fe..a4946cdc3bb3 100644 --- a/arch/arm64/boot/dts/rockchip/rk3588-coolpi-cm5-evb.dts +++ b/arch/arm64/boot/dts/rockchip/rk3588-coolpi-cm5-evb.dts @@ -72,7 +72,7 @@ vin-supply = <&vcc3v3_sys>; }; - vcc5v0_usb30_host: vcc5v0-usb30-host-regulator { + vcc5v0_usb_host1: vcc5v0_usb_host2: vcc5v0-usb-host-regulator { compatible = "regulator-fixed"; regulator-name = "vcc5v0_host"; regulator-boot-on; @@ -114,6 +114,7 @@ status = "okay"; }; +/* Standard pcie */ &pcie3x2 { reset-gpios = <&gpio3 RK_PB0 GPIO_ACTIVE_HIGH>; vpcie3v3-supply = <&vcc3v3_sys>; @@ -122,6 +123,7 @@ /* M.2 M-Key ssd */ &pcie3x4 { + num-lanes = <2>; reset-gpios = <&gpio4 RK_PB6 GPIO_ACTIVE_HIGH>; vpcie3v3-supply = <&vcc3v3_sys>; status = "okay"; @@ -188,12 +190,12 @@ }; &u2phy2_host { - phy-supply = <&vcc5v0_usb30_host>; + phy-supply = <&vcc5v0_usb_host1>; status = "okay"; }; &u2phy3_host { - phy-supply = <&vcc5v0_usb30_host>; + phy-supply = <&vcc5v0_usb_host2>; status = "okay"; }; diff --git a/arch/arm64/boot/dts/rockchip/rk3588-coolpi-cm5.dtsi b/arch/arm64/boot/dts/rockchip/rk3588-coolpi-cm5.dtsi index 0b02f4d6e003..cce1c8e83587 100644 --- a/arch/arm64/boot/dts/rockchip/rk3588-coolpi-cm5.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3588-coolpi-cm5.dtsi @@ -16,8 +16,8 @@ aliases { mmc0 = &sdhci; - mmc1 = &sdio; - mmc2 = &sdmmc; + mmc1 = &sdmmc; + mmc2 = &sdio; serial2 = &uart2; }; diff --git a/arch/arm64/boot/dts/rockchip/rk3588-evb1-v10.dts b/arch/arm64/boot/dts/rockchip/rk3588-evb1-v10.dts index ac7c677b0fb9..de30c2632b8e 100644 --- a/arch/arm64/boot/dts/rockchip/rk3588-evb1-v10.dts +++ b/arch/arm64/boot/dts/rockchip/rk3588-evb1-v10.dts @@ -448,6 +448,7 @@ <&rk806_dvs2_null>, <&rk806_dvs3_null>; pinctrl-names = "default"; spi-max-frequency = <1000000>; + system-power-controller; vcc1-supply = <&vcc5v0_sys>; vcc2-supply = <&vcc5v0_sys>; diff --git a/arch/arm64/boot/dts/rockchip/rk3588-jaguar.dts b/arch/arm64/boot/dts/rockchip/rk3588-jaguar.dts index 4ce70fb75a30..39d65002add1 100644 --- a/arch/arm64/boot/dts/rockchip/rk3588-jaguar.dts +++ b/arch/arm64/boot/dts/rockchip/rk3588-jaguar.dts @@ -62,7 +62,6 @@ compatible = "gpio-leds"; pinctrl-names = "default"; pinctrl-0 = <&led1_pin>; - status = "okay"; /* LED1 on PCB */ led-1 { diff --git a/arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dts b/arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dts index d7722772ecd8..997b516c2533 100644 --- a/arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dts +++ b/arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dts @@ -189,19 +189,19 @@ cpu-supply = <&vdd_cpu_lit_s0>; }; -&cpu_b0{ +&cpu_b0 { cpu-supply = <&vdd_cpu_big0_s0>; }; -&cpu_b1{ +&cpu_b1 { cpu-supply = <&vdd_cpu_big0_s0>; }; -&cpu_b2{ +&cpu_b2 { cpu-supply = <&vdd_cpu_big1_s0>; }; -&cpu_b3{ +&cpu_b3 { cpu-supply = <&vdd_cpu_big1_s0>; }; diff --git a/arch/arm64/boot/dts/rockchip/rk3588s-coolpi-4b.dts b/arch/arm64/boot/dts/rockchip/rk3588s-coolpi-4b.dts index ef4f058c20ff..e037bf9db75a 100644 --- a/arch/arm64/boot/dts/rockchip/rk3588s-coolpi-4b.dts +++ b/arch/arm64/boot/dts/rockchip/rk3588s-coolpi-4b.dts @@ -19,8 +19,8 @@ aliases { mmc0 = &sdhci; - mmc1 = &sdio; - mmc2 = &sdmmc; + mmc1 = &sdmmc; + mmc2 = &sdio; }; analog-sound { diff --git a/arch/arm64/boot/dts/rockchip/rk3588s-indiedroid-nova.dts b/arch/arm64/boot/dts/rockchip/rk3588s-indiedroid-nova.dts index dc677f29a9c7..3c2278886851 100644 --- a/arch/arm64/boot/dts/rockchip/rk3588s-indiedroid-nova.dts +++ b/arch/arm64/boot/dts/rockchip/rk3588s-indiedroid-nova.dts @@ -195,13 +195,13 @@ &gpio1 { gpio-line-names = /* GPIO1 A0-A7 */ - "HEADER_27_3v3", "HEADER_28_3v3", "", "", + "HEADER_27_3v3", "", "", "", "HEADER_29_1v8", "", "HEADER_7_1v8", "", /* GPIO1 B0-B7 */ "", "HEADER_31_1v8", "HEADER_33_1v8", "", "HEADER_11_1v8", "HEADER_13_1v8", "", "", /* GPIO1 C0-C7 */ - "", "", "", "", + "", "HEADER_28_3v3", "", "", "", "", "", "", /* GPIO1 D0-D7 */ "", "", "", "", @@ -225,11 +225,11 @@ &gpio4 { gpio-line-names = /* GPIO4 A0-A7 */ - "", "", "HEADER_37_3v3", "HEADER_32_3v3", - "HEADER_36_3v3", "", "HEADER_35_3v3", "HEADER_38_3v3", + "", "", "HEADER_37_3v3", "HEADER_8_3v3", + "HEADER_10_3v3", "", "HEADER_32_3v3", "HEADER_35_3v3", /* GPIO4 B0-B7 */ "", "", "", "HEADER_40_3v3", - "HEADER_8_3v3", "HEADER_10_3v3", "", "", + "HEADER_38_3v3", "HEADER_36_3v3", "", "", /* GPIO4 C0-C7 */ "", "", "", "", "", "", "", "", diff --git a/arch/arm64/crypto/aes-neonbs-glue.c b/arch/arm64/crypto/aes-neonbs-glue.c index bac4cabef607..467ac2f768ac 100644 --- a/arch/arm64/crypto/aes-neonbs-glue.c +++ b/arch/arm64/crypto/aes-neonbs-glue.c @@ -227,8 +227,19 @@ static int ctr_encrypt(struct skcipher_request *req) src += blocks * AES_BLOCK_SIZE; } if (nbytes && walk.nbytes == walk.total) { + u8 buf[AES_BLOCK_SIZE]; + u8 *d = dst; + + if (unlikely(nbytes < AES_BLOCK_SIZE)) + src = dst = memcpy(buf + sizeof(buf) - nbytes, + src, nbytes); + neon_aes_ctr_encrypt(dst, src, ctx->enc, ctx->key.rounds, nbytes, walk.iv); + + if (unlikely(nbytes < AES_BLOCK_SIZE)) + memcpy(d, dst, nbytes); + nbytes = 0; } kernel_neon_end(); diff --git a/arch/arm64/include/asm/alternative-macros.h b/arch/arm64/include/asm/alternative-macros.h index 210bb43cff2c..d328f549b1a6 100644 --- a/arch/arm64/include/asm/alternative-macros.h +++ b/arch/arm64/include/asm/alternative-macros.h @@ -229,7 +229,7 @@ alternative_has_cap_likely(const unsigned long cpucap) if (!cpucap_is_possible(cpucap)) return false; - asm_volatile_goto( + asm goto( ALTERNATIVE_CB("b %l[l_no]", %[cpucap], alt_cb_patch_nops) : : [cpucap] "i" (cpucap) @@ -247,7 +247,7 @@ alternative_has_cap_unlikely(const unsigned long cpucap) if (!cpucap_is_possible(cpucap)) return false; - asm_volatile_goto( + asm goto( ALTERNATIVE("nop", "b %l[l_yes]", %[cpucap]) : : [cpucap] "i" (cpucap) diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h index 21c824edf8ce..bd8d4ca81a48 100644 --- a/arch/arm64/include/asm/cpufeature.h +++ b/arch/arm64/include/asm/cpufeature.h @@ -83,7 +83,7 @@ struct arm64_ftr_bits { * to full-0 denotes that this field has no override * * A @mask field set to full-0 with the corresponding @val field set - * to full-1 denotes thath this field has an invalid override. + * to full-1 denotes that this field has an invalid override. */ struct arm64_ftr_override { u64 val; diff --git a/arch/arm64/include/asm/cputype.h b/arch/arm64/include/asm/cputype.h index 7c7493cb571f..52f076afeb96 100644 --- a/arch/arm64/include/asm/cputype.h +++ b/arch/arm64/include/asm/cputype.h @@ -61,6 +61,7 @@ #define ARM_CPU_IMP_HISI 0x48 #define ARM_CPU_IMP_APPLE 0x61 #define ARM_CPU_IMP_AMPERE 0xC0 +#define ARM_CPU_IMP_MICROSOFT 0x6D #define ARM_CPU_PART_AEM_V8 0xD0F #define ARM_CPU_PART_FOUNDATION 0xD00 @@ -135,6 +136,8 @@ #define AMPERE_CPU_PART_AMPERE1 0xAC3 +#define MICROSOFT_CPU_PART_AZURE_COBALT_100 0xD49 /* Based on r0p0 of ARM Neoverse N2 */ + #define MIDR_CORTEX_A53 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A53) #define MIDR_CORTEX_A57 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A57) #define MIDR_CORTEX_A72 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A72) @@ -193,6 +196,7 @@ #define MIDR_APPLE_M2_BLIZZARD_MAX MIDR_CPU_MODEL(ARM_CPU_IMP_APPLE, APPLE_CPU_PART_M2_BLIZZARD_MAX) #define MIDR_APPLE_M2_AVALANCHE_MAX MIDR_CPU_MODEL(ARM_CPU_IMP_APPLE, APPLE_CPU_PART_M2_AVALANCHE_MAX) #define MIDR_AMPERE1 MIDR_CPU_MODEL(ARM_CPU_IMP_AMPERE, AMPERE_CPU_PART_AMPERE1) +#define MIDR_MICROSOFT_AZURE_COBALT_100 MIDR_CPU_MODEL(ARM_CPU_IMP_MICROSOFT, MICROSOFT_CPU_PART_AZURE_COBALT_100) /* Fujitsu Erratum 010001 affects A64FX 1.0 and 1.1, (v0r0 and v1r0) */ #define MIDR_FUJITSU_ERRATUM_010001 MIDR_FUJITSU_A64FX diff --git a/arch/arm64/include/asm/fpsimd.h b/arch/arm64/include/asm/fpsimd.h index 50e5f25d3024..b67b89c54e1c 100644 --- a/arch/arm64/include/asm/fpsimd.h +++ b/arch/arm64/include/asm/fpsimd.h @@ -62,13 +62,13 @@ static inline void cpacr_restore(unsigned long cpacr) * When we defined the maximum SVE vector length we defined the ABI so * that the maximum vector length included all the reserved for future * expansion bits in ZCR rather than those just currently defined by - * the architecture. While SME follows a similar pattern the fact that - * it includes a square matrix means that any allocations that attempt - * to cover the maximum potential vector length (such as happen with - * the regset used for ptrace) end up being extremely large. Define - * the much lower actual limit for use in such situations. + * the architecture. Using this length to allocate worst size buffers + * results in excessively large allocations, and this effect is even + * more pronounced for SME due to ZA. Define more suitable VLs for + * these situations. */ -#define SME_VQ_MAX 16 +#define ARCH_SVE_VQ_MAX ((ZCR_ELx_LEN_MASK >> ZCR_ELx_LEN_SHIFT) + 1) +#define SME_VQ_MAX ((SMCR_ELx_LEN_MASK >> SMCR_ELx_LEN_SHIFT) + 1) struct task_struct; @@ -386,6 +386,7 @@ extern void sme_alloc(struct task_struct *task, bool flush); extern unsigned int sme_get_vl(void); extern int sme_set_current_vl(unsigned long arg); extern int sme_get_current_vl(void); +extern void sme_suspend_exit(void); /* * Return how many bytes of memory are required to store the full SME @@ -421,6 +422,7 @@ static inline int sme_max_vl(void) { return 0; } static inline int sme_max_virtualisable_vl(void) { return 0; } static inline int sme_set_current_vl(unsigned long arg) { return -EINVAL; } static inline int sme_get_current_vl(void) { return -EINVAL; } +static inline void sme_suspend_exit(void) { } static inline size_t sme_state_size(struct task_struct const *task) { diff --git a/arch/arm64/include/asm/jump_label.h b/arch/arm64/include/asm/jump_label.h index 48ddc0f45d22..6aafbb789991 100644 --- a/arch/arm64/include/asm/jump_label.h +++ b/arch/arm64/include/asm/jump_label.h @@ -18,7 +18,7 @@ static __always_inline bool arch_static_branch(struct static_key * const key, const bool branch) { - asm_volatile_goto( + asm goto( "1: nop \n\t" " .pushsection __jump_table, \"aw\" \n\t" " .align 3 \n\t" @@ -35,7 +35,7 @@ l_yes: static __always_inline bool arch_static_branch_jump(struct static_key * const key, const bool branch) { - asm_volatile_goto( + asm goto( "1: b %l[l_yes] \n\t" " .pushsection __jump_table, \"aw\" \n\t" " .align 3 \n\t" diff --git a/arch/arm64/include/asm/vdso.h b/arch/arm64/include/asm/vdso.h index b4ae32109932..4305995c8f82 100644 --- a/arch/arm64/include/asm/vdso.h +++ b/arch/arm64/include/asm/vdso.h @@ -17,9 +17,6 @@ #ifndef __ASSEMBLY__ #include <generated/vdso-offsets.h> -#ifdef CONFIG_COMPAT_VDSO -#include <generated/vdso32-offsets.h> -#endif #define VDSO_SYMBOL(base, name) \ ({ \ diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile index e5d03a7039b4..467cb7117273 100644 --- a/arch/arm64/kernel/Makefile +++ b/arch/arm64/kernel/Makefile @@ -77,9 +77,9 @@ obj-$(CONFIG_UNWIND_PATCH_PAC_INTO_SCS) += patch-scs.o # We need to prevent the SCS patching code from patching itself. Using # -mbranch-protection=none here to avoid the patchable PAC opcodes from being # generated triggers an issue with full LTO on Clang, which stops emitting PAC -# instructions altogether. So instead, omit the unwind tables used by the -# patching code, so it will not be able to locate its own PAC instructions. -CFLAGS_patch-scs.o += -fno-asynchronous-unwind-tables -fno-unwind-tables +# instructions altogether. So disable LTO as well for the compilation unit. +CFLAGS_patch-scs.o += -mbranch-protection=none +CFLAGS_REMOVE_patch-scs.o += $(CC_FLAGS_LTO) # Force dependency (vdso*-wrap.S includes vdso.so through incbin) $(obj)/vdso-wrap.o: $(obj)/vdso/vdso.so diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c index 967c7c7a4e7d..76b8dd37092a 100644 --- a/arch/arm64/kernel/cpu_errata.c +++ b/arch/arm64/kernel/cpu_errata.c @@ -374,6 +374,7 @@ static const struct midr_range erratum_1463225[] = { static const struct midr_range trbe_overwrite_fill_mode_cpus[] = { #ifdef CONFIG_ARM64_ERRATUM_2139208 MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N2), + MIDR_ALL_VERSIONS(MIDR_MICROSOFT_AZURE_COBALT_100), #endif #ifdef CONFIG_ARM64_ERRATUM_2119858 MIDR_ALL_VERSIONS(MIDR_CORTEX_A710), @@ -387,6 +388,7 @@ static const struct midr_range trbe_overwrite_fill_mode_cpus[] = { static const struct midr_range tsb_flush_fail_cpus[] = { #ifdef CONFIG_ARM64_ERRATUM_2067961 MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N2), + MIDR_ALL_VERSIONS(MIDR_MICROSOFT_AZURE_COBALT_100), #endif #ifdef CONFIG_ARM64_ERRATUM_2054223 MIDR_ALL_VERSIONS(MIDR_CORTEX_A710), @@ -399,6 +401,7 @@ static const struct midr_range tsb_flush_fail_cpus[] = { static struct midr_range trbe_write_out_of_range_cpus[] = { #ifdef CONFIG_ARM64_ERRATUM_2253138 MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N2), + MIDR_ALL_VERSIONS(MIDR_MICROSOFT_AZURE_COBALT_100), #endif #ifdef CONFIG_ARM64_ERRATUM_2224489 MIDR_ALL_VERSIONS(MIDR_CORTEX_A710), diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c index a5dc6f764195..f27acca550d5 100644 --- a/arch/arm64/kernel/fpsimd.c +++ b/arch/arm64/kernel/fpsimd.c @@ -1311,6 +1311,22 @@ void __init sme_setup(void) get_sme_default_vl()); } +void sme_suspend_exit(void) +{ + u64 smcr = 0; + + if (!system_supports_sme()) + return; + + if (system_supports_fa64()) + smcr |= SMCR_ELx_FA64; + if (system_supports_sme2()) + smcr |= SMCR_ELx_EZT0; + + write_sysreg_s(smcr, SYS_SMCR_EL1); + write_sysreg_s(0, SYS_SMPRI_EL1); +} + #endif /* CONFIG_ARM64_SME */ static void sve_init_regs(void) @@ -1635,7 +1651,7 @@ void fpsimd_preserve_current_state(void) void fpsimd_signal_preserve_current_state(void) { fpsimd_preserve_current_state(); - if (test_thread_flag(TIF_SVE)) + if (current->thread.fp_type == FP_STATE_SVE) sve_to_fpsimd(current); } diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c index dc6cf0e37194..e3bef38fc2e2 100644 --- a/arch/arm64/kernel/ptrace.c +++ b/arch/arm64/kernel/ptrace.c @@ -1500,7 +1500,8 @@ static const struct user_regset aarch64_regsets[] = { #ifdef CONFIG_ARM64_SVE [REGSET_SVE] = { /* Scalable Vector Extension */ .core_note_type = NT_ARM_SVE, - .n = DIV_ROUND_UP(SVE_PT_SIZE(SVE_VQ_MAX, SVE_PT_REGS_SVE), + .n = DIV_ROUND_UP(SVE_PT_SIZE(ARCH_SVE_VQ_MAX, + SVE_PT_REGS_SVE), SVE_VQ_BYTES), .size = SVE_VQ_BYTES, .align = SVE_VQ_BYTES, diff --git a/arch/arm64/kernel/signal.c b/arch/arm64/kernel/signal.c index 0e8beb3349ea..425b1bc17a3f 100644 --- a/arch/arm64/kernel/signal.c +++ b/arch/arm64/kernel/signal.c @@ -242,7 +242,7 @@ static int preserve_sve_context(struct sve_context __user *ctx) vl = task_get_sme_vl(current); vq = sve_vq_from_vl(vl); flags |= SVE_SIG_FLAG_SM; - } else if (test_thread_flag(TIF_SVE)) { + } else if (current->thread.fp_type == FP_STATE_SVE) { vq = sve_vq_from_vl(vl); } @@ -878,7 +878,7 @@ static int setup_sigframe_layout(struct rt_sigframe_user_layout *user, if (system_supports_sve() || system_supports_sme()) { unsigned int vq = 0; - if (add_all || test_thread_flag(TIF_SVE) || + if (add_all || current->thread.fp_type == FP_STATE_SVE || thread_sm_enabled(¤t->thread)) { int vl = max(sve_max_vl(), sme_max_vl()); diff --git a/arch/arm64/kernel/stacktrace.c b/arch/arm64/kernel/stacktrace.c index 7f88028a00c0..b2a60e0bcfd2 100644 --- a/arch/arm64/kernel/stacktrace.c +++ b/arch/arm64/kernel/stacktrace.c @@ -247,7 +247,7 @@ struct kunwind_consume_entry_data { void *cookie; }; -static bool +static __always_inline bool arch_kunwind_consume_entry(const struct kunwind_state *state, void *cookie) { struct kunwind_consume_entry_data *data = cookie; diff --git a/arch/arm64/kernel/suspend.c b/arch/arm64/kernel/suspend.c index eca4d0435211..eaaff94329cd 100644 --- a/arch/arm64/kernel/suspend.c +++ b/arch/arm64/kernel/suspend.c @@ -12,6 +12,7 @@ #include <asm/daifflags.h> #include <asm/debug-monitors.h> #include <asm/exec.h> +#include <asm/fpsimd.h> #include <asm/mte.h> #include <asm/memory.h> #include <asm/mmu_context.h> @@ -80,6 +81,8 @@ void notrace __cpu_suspend_exit(void) */ spectre_v4_enable_mitigation(NULL); + sme_suspend_exit(); + /* Restore additional feature-specific configuration */ ptrauth_suspend_exit(); } diff --git a/arch/arm64/kernel/vdso.c b/arch/arm64/kernel/vdso.c index 5562daf38a22..89b6e7840002 100644 --- a/arch/arm64/kernel/vdso.c +++ b/arch/arm64/kernel/vdso.c @@ -69,10 +69,7 @@ static struct vdso_abi_info vdso_info[] __ro_after_init = { /* * The vDSO data page. */ -static union { - struct vdso_data data[CS_BASES]; - u8 page[PAGE_SIZE]; -} vdso_data_store __page_aligned_data; +static union vdso_data_store vdso_data_store __page_aligned_data; struct vdso_data *vdso_data = vdso_data_store.data; static int vdso_mremap(const struct vm_special_mapping *sm, diff --git a/arch/arm64/kernel/vdso32/Makefile b/arch/arm64/kernel/vdso32/Makefile index 2266fcdff78a..f5f80fdce0fe 100644 --- a/arch/arm64/kernel/vdso32/Makefile +++ b/arch/arm64/kernel/vdso32/Makefile @@ -127,9 +127,6 @@ obj-vdso := $(c-obj-vdso) $(c-obj-vdso-gettimeofday) $(asm-obj-vdso) targets += vdso.lds CPPFLAGS_vdso.lds += -P -C -U$(ARCH) -include/generated/vdso32-offsets.h: $(obj)/vdso32.so.dbg FORCE - $(call if_changed,vdsosym) - # Strip rule for vdso.so $(obj)/vdso.so: OBJCOPYFLAGS := -S $(obj)/vdso.so: $(obj)/vdso32.so.dbg FORCE @@ -166,9 +163,3 @@ quiet_cmd_vdsoas = AS32 $@ quiet_cmd_vdsomunge = MUNGE $@ cmd_vdsomunge = $(obj)/$(munge) $< $@ - -# Generate vDSO offsets using helper script (borrowed from the 64-bit vDSO) -gen-vdsosym := $(srctree)/$(src)/../vdso/gen_vdso_offsets.sh -quiet_cmd_vdsosym = VDSOSYM $@ -# The AArch64 nm should be able to read an AArch32 binary - cmd_vdsosym = $(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@ diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig index 6c3c8ca73e7f..27ca89b628a0 100644 --- a/arch/arm64/kvm/Kconfig +++ b/arch/arm64/kvm/Kconfig @@ -3,7 +3,6 @@ # KVM configuration # -source "virt/lib/Kconfig" source "virt/kvm/Kconfig" menuconfig VIRTUALIZATION diff --git a/arch/arm64/kvm/hyp/pgtable.c b/arch/arm64/kvm/hyp/pgtable.c index c651df904fe3..ab9d05fcf98b 100644 --- a/arch/arm64/kvm/hyp/pgtable.c +++ b/arch/arm64/kvm/hyp/pgtable.c @@ -1419,7 +1419,6 @@ kvm_pte_t *kvm_pgtable_stage2_create_unlinked(struct kvm_pgtable *pgt, level + 1); if (ret) { kvm_pgtable_stage2_free_unlinked(mm_ops, pgtable, level); - mm_ops->put_page(pgtable); return ERR_PTR(ret); } @@ -1502,7 +1501,6 @@ static int stage2_split_walker(const struct kvm_pgtable_visit_ctx *ctx, if (!stage2_try_break_pte(ctx, mmu)) { kvm_pgtable_stage2_free_unlinked(mm_ops, childp, level); - mm_ops->put_page(childp); return -EAGAIN; } diff --git a/arch/arm64/kvm/pkvm.c b/arch/arm64/kvm/pkvm.c index 8350fb8fee0b..b7be96a53597 100644 --- a/arch/arm64/kvm/pkvm.c +++ b/arch/arm64/kvm/pkvm.c @@ -101,6 +101,17 @@ void __init kvm_hyp_reserve(void) hyp_mem_base); } +static void __pkvm_destroy_hyp_vm(struct kvm *host_kvm) +{ + if (host_kvm->arch.pkvm.handle) { + WARN_ON(kvm_call_hyp_nvhe(__pkvm_teardown_vm, + host_kvm->arch.pkvm.handle)); + } + + host_kvm->arch.pkvm.handle = 0; + free_hyp_memcache(&host_kvm->arch.pkvm.teardown_mc); +} + /* * Allocates and donates memory for hypervisor VM structs at EL2. * @@ -181,7 +192,7 @@ static int __pkvm_create_hyp_vm(struct kvm *host_kvm) return 0; destroy_vm: - pkvm_destroy_hyp_vm(host_kvm); + __pkvm_destroy_hyp_vm(host_kvm); return ret; free_vm: free_pages_exact(hyp_vm, hyp_vm_sz); @@ -194,23 +205,19 @@ int pkvm_create_hyp_vm(struct kvm *host_kvm) { int ret = 0; - mutex_lock(&host_kvm->lock); + mutex_lock(&host_kvm->arch.config_lock); if (!host_kvm->arch.pkvm.handle) ret = __pkvm_create_hyp_vm(host_kvm); - mutex_unlock(&host_kvm->lock); + mutex_unlock(&host_kvm->arch.config_lock); return ret; } void pkvm_destroy_hyp_vm(struct kvm *host_kvm) { - if (host_kvm->arch.pkvm.handle) { - WARN_ON(kvm_call_hyp_nvhe(__pkvm_teardown_vm, - host_kvm->arch.pkvm.handle)); - } - - host_kvm->arch.pkvm.handle = 0; - free_hyp_memcache(&host_kvm->arch.pkvm.teardown_mc); + mutex_lock(&host_kvm->arch.config_lock); + __pkvm_destroy_hyp_vm(host_kvm); + mutex_unlock(&host_kvm->arch.config_lock); } int pkvm_init_host_vm(struct kvm *host_kvm) diff --git a/arch/arm64/kvm/vgic/vgic-its.c b/arch/arm64/kvm/vgic/vgic-its.c index e2764d0ffa9f..28a93074eca1 100644 --- a/arch/arm64/kvm/vgic/vgic-its.c +++ b/arch/arm64/kvm/vgic/vgic-its.c @@ -468,6 +468,9 @@ static int its_sync_lpi_pending_table(struct kvm_vcpu *vcpu) } irq = vgic_get_irq(vcpu->kvm, NULL, intids[i]); + if (!irq) + continue; + raw_spin_lock_irqsave(&irq->irq_lock, flags); irq->pending_latch = pendmask & (1U << bit_nr); vgic_queue_irq_unlock(vcpu->kvm, irq, flags); @@ -1432,6 +1435,8 @@ static int vgic_its_cmd_handle_movall(struct kvm *kvm, struct vgic_its *its, for (i = 0; i < irq_count; i++) { irq = vgic_get_irq(kvm, NULL, intids[i]); + if (!irq) + continue; update_affinity(irq, vcpu2); diff --git a/arch/csky/include/asm/jump_label.h b/arch/csky/include/asm/jump_label.h index 98a3f4b168bd..ef2e37a10a0f 100644 --- a/arch/csky/include/asm/jump_label.h +++ b/arch/csky/include/asm/jump_label.h @@ -12,7 +12,7 @@ static __always_inline bool arch_static_branch(struct static_key *key, bool branch) { - asm_volatile_goto( + asm goto( "1: nop32 \n" " .pushsection __jump_table, \"aw\" \n" " .align 2 \n" @@ -29,7 +29,7 @@ label: static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch) { - asm_volatile_goto( + asm goto( "1: bsr32 %l[label] \n" " .pushsection __jump_table, \"aw\" \n" " .align 2 \n" diff --git a/arch/csky/include/asm/vdso.h b/arch/csky/include/asm/vdso.h index bdce581b5fcb..181a15edafe8 100644 --- a/arch/csky/include/asm/vdso.h +++ b/arch/csky/include/asm/vdso.h @@ -5,11 +5,6 @@ #include <linux/types.h> -#ifndef GENERIC_TIME_VSYSCALL -struct vdso_data { -}; -#endif - /* * The VDSO symbols are mapped into Linux so we can just use regular symbol * addressing to get their offsets in userspace. The symbols are mapped at an diff --git a/arch/csky/kernel/smp.c b/arch/csky/kernel/smp.c index 8e42352cbf12..92dbbf3e0205 100644 --- a/arch/csky/kernel/smp.c +++ b/arch/csky/kernel/smp.c @@ -152,10 +152,6 @@ void arch_irq_work_raise(void) } #endif -void __init smp_prepare_boot_cpu(void) -{ -} - void __init smp_prepare_cpus(unsigned int max_cpus) { } diff --git a/arch/csky/kernel/vdso.c b/arch/csky/kernel/vdso.c index 16c20d64d165..2ca886e4a458 100644 --- a/arch/csky/kernel/vdso.c +++ b/arch/csky/kernel/vdso.c @@ -8,25 +8,15 @@ #include <linux/slab.h> #include <asm/page.h> -#ifdef GENERIC_TIME_VSYSCALL #include <vdso/datapage.h> -#else -#include <asm/vdso.h> -#endif extern char vdso_start[], vdso_end[]; static unsigned int vdso_pages; static struct page **vdso_pagelist; -/* - * The vDSO data page. - */ -static union { - struct vdso_data data; - u8 page[PAGE_SIZE]; -} vdso_data_store __page_aligned_data; -struct vdso_data *vdso_data = &vdso_data_store.data; +static union vdso_data_store vdso_data_store __page_aligned_data; +struct vdso_data *vdso_data = vdso_data_store.data; static int __init vdso_init(void) { diff --git a/arch/hexagon/kernel/smp.c b/arch/hexagon/kernel/smp.c index 608884bc3396..65e1fdf9fdb2 100644 --- a/arch/hexagon/kernel/smp.c +++ b/arch/hexagon/kernel/smp.c @@ -114,10 +114,6 @@ void send_ipi(const struct cpumask *cpumask, enum ipi_message_type msg) local_irq_restore(flags); } -void __init smp_prepare_boot_cpu(void) -{ -} - /* * interrupts should already be disabled from the VM * SP should already be correct; need to set THREADINFO_REG diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index 10959e6c3583..929f68926b34 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -12,6 +12,7 @@ config LOONGARCH select ARCH_DISABLE_KASAN_INLINE select ARCH_ENABLE_MEMORY_HOTPLUG select ARCH_ENABLE_MEMORY_HOTREMOVE + select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI select ARCH_HAS_CPU_FINALIZE_INIT select ARCH_HAS_FORTIFY_SOURCE @@ -99,6 +100,7 @@ config LOONGARCH select HAVE_ARCH_KFENCE select HAVE_ARCH_KGDB if PERF_EVENTS select HAVE_ARCH_MMAP_RND_BITS if MMU + select HAVE_ARCH_SECCOMP select HAVE_ARCH_SECCOMP_FILTER select HAVE_ARCH_TRACEHOOK select HAVE_ARCH_TRANSPARENT_HUGEPAGE @@ -632,23 +634,6 @@ config RANDOMIZE_BASE_MAX_OFFSET This is limited by the size of the lower address memory, 256MB. -config SECCOMP - bool "Enable seccomp to safely compute untrusted bytecode" - depends on PROC_FS - default y - help - This kernel feature is useful for number crunching applications - that may need to compute untrusted bytecode during their - execution. By using pipes or other transports made available to - the process as file descriptors supporting the read/write - syscalls, it's possible to isolate those applications in - their own address space using seccomp. Once seccomp is - enabled via /proc/<pid>/seccomp, it cannot be disabled - and the task is only allowed to execute a few safe syscalls - defined by each seccomp mode. - - If unsure, say Y. Only embedded should say N here. - endmenu config ARCH_SELECT_MEMORY_MODEL @@ -667,10 +652,6 @@ config ARCH_SPARSEMEM_ENABLE or have huge holes in the physical address space for other reasons. See <file:Documentation/mm/numa.rst> for more. -config ARCH_ENABLE_THP_MIGRATION - def_bool y - depends on TRANSPARENT_HUGEPAGE - config ARCH_MEMORY_PROBE def_bool y depends on MEMORY_HOTPLUG diff --git a/arch/loongarch/boot/dts/loongson-2k0500-ref.dts b/arch/loongarch/boot/dts/loongson-2k0500-ref.dts index b38071a4d0b0..8aefb0c12672 100644 --- a/arch/loongarch/boot/dts/loongson-2k0500-ref.dts +++ b/arch/loongarch/boot/dts/loongson-2k0500-ref.dts @@ -60,7 +60,7 @@ #address-cells = <1>; #size-cells = <0>; - eeprom@57{ + eeprom@57 { compatible = "atmel,24c16"; reg = <0x57>; pagesize = <16>; diff --git a/arch/loongarch/boot/dts/loongson-2k1000-ref.dts b/arch/loongarch/boot/dts/loongson-2k1000-ref.dts index 132a2d1ea8bc..ed4d32434041 100644 --- a/arch/loongarch/boot/dts/loongson-2k1000-ref.dts +++ b/arch/loongarch/boot/dts/loongson-2k1000-ref.dts @@ -78,7 +78,7 @@ #address-cells = <1>; #size-cells = <0>; - eeprom@57{ + eeprom@57 { compatible = "atmel,24c16"; reg = <0x57>; pagesize = <16>; diff --git a/arch/loongarch/include/asm/acpi.h b/arch/loongarch/include/asm/acpi.h index 8de6c4b83a61..49e29b29996f 100644 --- a/arch/loongarch/include/asm/acpi.h +++ b/arch/loongarch/include/asm/acpi.h @@ -32,8 +32,10 @@ static inline bool acpi_has_cpu_in_madt(void) return true; } +#define MAX_CORE_PIC 256 + extern struct list_head acpi_wakeup_device_list; -extern struct acpi_madt_core_pic acpi_core_pic[NR_CPUS]; +extern struct acpi_madt_core_pic acpi_core_pic[MAX_CORE_PIC]; extern int __init parse_acpi_topology(void); diff --git a/arch/loongarch/include/asm/jump_label.h b/arch/loongarch/include/asm/jump_label.h index 3cea299a5ef5..29acfe3de3fa 100644 --- a/arch/loongarch/include/asm/jump_label.h +++ b/arch/loongarch/include/asm/jump_label.h @@ -22,7 +22,7 @@ static __always_inline bool arch_static_branch(struct static_key * const key, const bool branch) { - asm_volatile_goto( + asm goto( "1: nop \n\t" JUMP_TABLE_ENTRY : : "i"(&((char *)key)[branch]) : : l_yes); @@ -35,7 +35,7 @@ l_yes: static __always_inline bool arch_static_branch_jump(struct static_key * const key, const bool branch) { - asm_volatile_goto( + asm goto( "1: b %l[l_yes] \n\t" JUMP_TABLE_ENTRY : : "i"(&((char *)key)[branch]) : : l_yes); diff --git a/arch/loongarch/include/asm/kvm_vcpu.h b/arch/loongarch/include/asm/kvm_vcpu.h index e71ceb88f29e..0cb4fdb8a9b5 100644 --- a/arch/loongarch/include/asm/kvm_vcpu.h +++ b/arch/loongarch/include/asm/kvm_vcpu.h @@ -60,7 +60,7 @@ int kvm_own_lsx(struct kvm_vcpu *vcpu); void kvm_save_lsx(struct loongarch_fpu *fpu); void kvm_restore_lsx(struct loongarch_fpu *fpu); #else -static inline int kvm_own_lsx(struct kvm_vcpu *vcpu) { } +static inline int kvm_own_lsx(struct kvm_vcpu *vcpu) { return -EINVAL; } static inline void kvm_save_lsx(struct loongarch_fpu *fpu) { } static inline void kvm_restore_lsx(struct loongarch_fpu *fpu) { } #endif @@ -70,7 +70,7 @@ int kvm_own_lasx(struct kvm_vcpu *vcpu); void kvm_save_lasx(struct loongarch_fpu *fpu); void kvm_restore_lasx(struct loongarch_fpu *fpu); #else -static inline int kvm_own_lasx(struct kvm_vcpu *vcpu) { } +static inline int kvm_own_lasx(struct kvm_vcpu *vcpu) { return -EINVAL; } static inline void kvm_save_lasx(struct loongarch_fpu *fpu) { } static inline void kvm_restore_lasx(struct loongarch_fpu *fpu) { } #endif diff --git a/arch/loongarch/kernel/acpi.c b/arch/loongarch/kernel/acpi.c index b6b097bbf866..5cf59c617126 100644 --- a/arch/loongarch/kernel/acpi.c +++ b/arch/loongarch/kernel/acpi.c @@ -29,11 +29,9 @@ int disabled_cpus; u64 acpi_saved_sp; -#define MAX_CORE_PIC 256 - #define PREFIX "ACPI: " -struct acpi_madt_core_pic acpi_core_pic[NR_CPUS]; +struct acpi_madt_core_pic acpi_core_pic[MAX_CORE_PIC]; void __init __iomem * __acpi_map_table(unsigned long phys, unsigned long size) { diff --git a/arch/loongarch/kernel/setup.c b/arch/loongarch/kernel/setup.c index edf2bba80130..634ef17fd38b 100644 --- a/arch/loongarch/kernel/setup.c +++ b/arch/loongarch/kernel/setup.c @@ -357,6 +357,8 @@ void __init platform_init(void) acpi_gbl_use_default_register_widths = false; acpi_boot_table_init(); #endif + + early_init_fdt_scan_reserved_mem(); unflatten_and_copy_device_tree(); #ifdef CONFIG_NUMA @@ -390,8 +392,6 @@ static void __init arch_mem_init(char **cmdline_p) check_kernel_sections_mem(); - early_init_fdt_scan_reserved_mem(); - /* * In order to reduce the possibility of kernel panic when failed to * get IO TLB memory under CONFIG_SWIOTLB, it is better to allocate diff --git a/arch/loongarch/kernel/smp.c b/arch/loongarch/kernel/smp.c index a16e3dbe9f09..aabee0b280fe 100644 --- a/arch/loongarch/kernel/smp.c +++ b/arch/loongarch/kernel/smp.c @@ -88,6 +88,73 @@ void show_ipi_list(struct seq_file *p, int prec) } } +static inline void set_cpu_core_map(int cpu) +{ + int i; + + cpumask_set_cpu(cpu, &cpu_core_setup_map); + + for_each_cpu(i, &cpu_core_setup_map) { + if (cpu_data[cpu].package == cpu_data[i].package) { + cpumask_set_cpu(i, &cpu_core_map[cpu]); + cpumask_set_cpu(cpu, &cpu_core_map[i]); + } + } +} + +static inline void set_cpu_sibling_map(int cpu) +{ + int i; + + cpumask_set_cpu(cpu, &cpu_sibling_setup_map); + + for_each_cpu(i, &cpu_sibling_setup_map) { + if (cpus_are_siblings(cpu, i)) { + cpumask_set_cpu(i, &cpu_sibling_map[cpu]); + cpumask_set_cpu(cpu, &cpu_sibling_map[i]); + } + } +} + +static inline void clear_cpu_sibling_map(int cpu) +{ + int i; + + for_each_cpu(i, &cpu_sibling_setup_map) { + if (cpus_are_siblings(cpu, i)) { + cpumask_clear_cpu(i, &cpu_sibling_map[cpu]); + cpumask_clear_cpu(cpu, &cpu_sibling_map[i]); + } + } + + cpumask_clear_cpu(cpu, &cpu_sibling_setup_map); +} + +/* + * Calculate a new cpu_foreign_map mask whenever a + * new cpu appears or disappears. + */ +void calculate_cpu_foreign_map(void) +{ + int i, k, core_present; + cpumask_t temp_foreign_map; + + /* Re-calculate the mask */ + cpumask_clear(&temp_foreign_map); + for_each_online_cpu(i) { + core_present = 0; + for_each_cpu(k, &temp_foreign_map) + if (cpus_are_siblings(i, k)) + core_present = 1; + if (!core_present) + cpumask_set_cpu(i, &temp_foreign_map); + } + + for_each_online_cpu(i) + cpumask_andnot(&cpu_foreign_map[i], + &temp_foreign_map, &cpu_sibling_map[i]); +} + /* Send mailbox buffer via Mail_Send */ static void csr_mail_send(uint64_t data, int cpu, int mailbox) { @@ -303,6 +370,7 @@ int loongson_cpu_disable(void) numa_remove_cpu(cpu); #endif set_cpu_online(cpu, false); + clear_cpu_sibling_map(cpu); calculate_cpu_foreign_map(); local_irq_save(flags); irq_migrate_all_off_this_cpu(); @@ -337,6 +405,7 @@ void __noreturn arch_cpu_idle_dead(void) addr = iocsr_read64(LOONGARCH_IOCSR_MBUF0); } while (addr == 0); + local_irq_disable(); init_fn = (void *)TO_CACHE(addr); iocsr_write32(0xffffffff, LOONGARCH_IOCSR_IPI_CLEAR); @@ -379,59 +448,6 @@ static int __init ipi_pm_init(void) core_initcall(ipi_pm_init); #endif -static inline void set_cpu_sibling_map(int cpu) -{ - int i; - - cpumask_set_cpu(cpu, &cpu_sibling_setup_map); - - for_each_cpu(i, &cpu_sibling_setup_map) { - if (cpus_are_siblings(cpu, i)) { - cpumask_set_cpu(i, &cpu_sibling_map[cpu]); - cpumask_set_cpu(cpu, &cpu_sibling_map[i]); - } - } -} - -static inline void set_cpu_core_map(int cpu) -{ - int i; - - cpumask_set_cpu(cpu, &cpu_core_setup_map); - - for_each_cpu(i, &cpu_core_setup_map) { - if (cpu_data[cpu].package == cpu_data[i].package) { - cpumask_set_cpu(i, &cpu_core_map[cpu]); - cpumask_set_cpu(cpu, &cpu_core_map[i]); - } - } -} - -/* - * Calculate a new cpu_foreign_map mask whenever a - * new cpu appears or disappears. - */ -void calculate_cpu_foreign_map(void) -{ - int i, k, core_present; - cpumask_t temp_foreign_map; - - /* Re-calculate the mask */ - cpumask_clear(&temp_foreign_map); - for_each_online_cpu(i) { - core_present = 0; - for_each_cpu(k, &temp_foreign_map) - if (cpus_are_siblings(i, k)) - core_present = 1; - if (!core_present) - cpumask_set_cpu(i, &temp_foreign_map); - } - - for_each_online_cpu(i) - cpumask_andnot(&cpu_foreign_map[i], - &temp_foreign_map, &cpu_sibling_map[i]); -} - /* Preload SMP state for boot cpu */ void smp_prepare_boot_cpu(void) { @@ -509,7 +525,6 @@ asmlinkage void start_secondary(void) sync_counter(); cpu = raw_smp_processor_id(); set_my_cpu_offset(per_cpu_offset(cpu)); - rcutree_report_cpu_starting(cpu); cpu_probe(); constant_clockevent_init(); diff --git a/arch/loongarch/kernel/vdso.c b/arch/loongarch/kernel/vdso.c index 14941e4be66d..90dfccb41c14 100644 --- a/arch/loongarch/kernel/vdso.c +++ b/arch/loongarch/kernel/vdso.c @@ -21,15 +21,13 @@ #include <asm/vdso.h> #include <vdso/helpers.h> #include <vdso/vsyscall.h> +#include <vdso/datapage.h> #include <generated/vdso-offsets.h> extern char vdso_start[], vdso_end[]; /* Kernel-provided data used by the VDSO. */ -static union { - u8 page[PAGE_SIZE]; - struct vdso_data data[CS_BASES]; -} generic_vdso_data __page_aligned_data; +static union vdso_data_store generic_vdso_data __page_aligned_data; static union { u8 page[LOONGARCH_VDSO_DATA_SIZE]; diff --git a/arch/loongarch/kvm/mmu.c b/arch/loongarch/kvm/mmu.c index 915f17527893..50a6acd7ffe4 100644 --- a/arch/loongarch/kvm/mmu.c +++ b/arch/loongarch/kvm/mmu.c @@ -675,7 +675,7 @@ static bool fault_supports_huge_mapping(struct kvm_memory_slot *memslot, * * There are several ways to safely use this helper: * - * - Check mmu_invalidate_retry_hva() after grabbing the mapping level, before + * - Check mmu_invalidate_retry_gfn() after grabbing the mapping level, before * consuming it. In this case, mmu_lock doesn't need to be held during the * lookup, but it does need to be held while checking the MMU notifier. * @@ -855,7 +855,7 @@ retry: /* Check if an invalidation has taken place since we got pfn */ spin_lock(&kvm->mmu_lock); - if (mmu_invalidate_retry_hva(kvm, mmu_seq, hva)) { + if (mmu_invalidate_retry_gfn(kvm, mmu_seq, gfn)) { /* * This can happen when mappings are changed asynchronously, but * also synchronously if a COW is triggered by diff --git a/arch/loongarch/kvm/vcpu.c b/arch/loongarch/kvm/vcpu.c index 27701991886d..36106922b5d7 100644 --- a/arch/loongarch/kvm/vcpu.c +++ b/arch/loongarch/kvm/vcpu.c @@ -298,74 +298,73 @@ static int _kvm_setcsr(struct kvm_vcpu *vcpu, unsigned int id, u64 val) return ret; } -static int _kvm_get_cpucfg(int id, u64 *v) +static int _kvm_get_cpucfg_mask(int id, u64 *v) { - int ret = 0; - - if (id < 0 && id >= KVM_MAX_CPUCFG_REGS) + if (id < 0 || id >= KVM_MAX_CPUCFG_REGS) return -EINVAL; switch (id) { case 2: - /* Return CPUCFG2 features which have been supported by KVM */ + /* CPUCFG2 features unconditionally supported by KVM */ *v = CPUCFG2_FP | CPUCFG2_FPSP | CPUCFG2_FPDP | CPUCFG2_FPVERS | CPUCFG2_LLFTP | CPUCFG2_LLFTPREV | CPUCFG2_LAM; /* - * If LSX is supported by CPU, it is also supported by KVM, - * as we implement it. + * For the ISA extensions listed below, if one is supported + * by the host, then it is also supported by KVM. */ if (cpu_has_lsx) *v |= CPUCFG2_LSX; - /* - * if LASX is supported by CPU, it is also supported by KVM, - * as we implement it. - */ if (cpu_has_lasx) *v |= CPUCFG2_LASX; - break; + return 0; default: - ret = -EINVAL; - break; + /* + * No restrictions on other valid CPUCFG IDs' values, but + * CPUCFG data is limited to 32 bits as the LoongArch ISA + * manual says (Volume 1, Section 2.2.10.5 "CPUCFG"). + */ + *v = U32_MAX; + return 0; } - return ret; } static int kvm_check_cpucfg(int id, u64 val) { - u64 mask; - int ret = 0; - - if (id < 0 && id >= KVM_MAX_CPUCFG_REGS) - return -EINVAL; + int ret; + u64 mask = 0; - if (_kvm_get_cpucfg(id, &mask)) + ret = _kvm_get_cpucfg_mask(id, &mask); + if (ret) return ret; + if (val & ~mask) + /* Unsupported features and/or the higher 32 bits should not be set */ + return -EINVAL; + switch (id) { case 2: - /* CPUCFG2 features checking */ - if (val & ~mask) - /* The unsupported features should not be set */ - ret = -EINVAL; - else if (!(val & CPUCFG2_LLFTP)) - /* The LLFTP must be set, as guest must has a constant timer */ - ret = -EINVAL; - else if ((val & CPUCFG2_FP) && (!(val & CPUCFG2_FPSP) || !(val & CPUCFG2_FPDP))) - /* Single and double float point must both be set when enable FP */ - ret = -EINVAL; - else if ((val & CPUCFG2_LSX) && !(val & CPUCFG2_FP)) - /* FP should be set when enable LSX */ - ret = -EINVAL; - else if ((val & CPUCFG2_LASX) && !(val & CPUCFG2_LSX)) - /* LSX, FP should be set when enable LASX, and FP has been checked before. */ - ret = -EINVAL; - break; + if (!(val & CPUCFG2_LLFTP)) + /* Guests must have a constant timer */ + return -EINVAL; + if ((val & CPUCFG2_FP) && (!(val & CPUCFG2_FPSP) || !(val & CPUCFG2_FPDP))) + /* Single and double float point must both be set when FP is enabled */ + return -EINVAL; + if ((val & CPUCFG2_LSX) && !(val & CPUCFG2_FP)) + /* LSX architecturally implies FP but val does not satisfy that */ + return -EINVAL; + if ((val & CPUCFG2_LASX) && !(val & CPUCFG2_LSX)) + /* LASX architecturally implies LSX and FP but val does not satisfy that */ + return -EINVAL; + return 0; default: - break; + /* + * Values for the other CPUCFG IDs are not being further validated + * besides the mask check above. + */ + return 0; } - return ret; } static int kvm_get_one_reg(struct kvm_vcpu *vcpu, @@ -566,7 +565,7 @@ static int kvm_loongarch_get_cpucfg_attr(struct kvm_vcpu *vcpu, uint64_t val; uint64_t __user *uaddr = (uint64_t __user *)attr->addr; - ret = _kvm_get_cpucfg(attr->attr, &val); + ret = _kvm_get_cpucfg_mask(attr->attr, &val); if (ret) return ret; diff --git a/arch/loongarch/mm/kasan_init.c b/arch/loongarch/mm/kasan_init.c index cc3e81fe0186..c608adc99845 100644 --- a/arch/loongarch/mm/kasan_init.c +++ b/arch/loongarch/mm/kasan_init.c @@ -44,6 +44,9 @@ void *kasan_mem_to_shadow(const void *addr) unsigned long xrange = (maddr >> XRANGE_SHIFT) & 0xffff; unsigned long offset = 0; + if (maddr >= FIXADDR_START) + return (void *)(kasan_early_shadow_page); + maddr &= XRANGE_SHADOW_MASK; switch (xrange) { case XKPRANGE_CC_SEG: diff --git a/arch/loongarch/mm/tlb.c b/arch/loongarch/mm/tlb.c index 2c0a411f23aa..0b95d32b30c9 100644 --- a/arch/loongarch/mm/tlb.c +++ b/arch/loongarch/mm/tlb.c @@ -284,12 +284,16 @@ static void setup_tlb_handler(int cpu) set_handler(EXCCODE_TLBNR * VECSIZE, handle_tlb_protect, VECSIZE); set_handler(EXCCODE_TLBNX * VECSIZE, handle_tlb_protect, VECSIZE); set_handler(EXCCODE_TLBPE * VECSIZE, handle_tlb_protect, VECSIZE); - } + } else { + int vec_sz __maybe_unused; + void *addr __maybe_unused; + struct page *page __maybe_unused; + + /* Avoid lockdep warning */ + rcutree_report_cpu_starting(cpu); + #ifdef CONFIG_NUMA - else { - void *addr; - struct page *page; - const int vec_sz = sizeof(exception_handlers); + vec_sz = sizeof(exception_handlers); if (pcpu_handlers[cpu]) return; @@ -305,8 +309,8 @@ static void setup_tlb_handler(int cpu) csr_write64(pcpu_handlers[cpu], LOONGARCH_CSR_EENTRY); csr_write64(pcpu_handlers[cpu], LOONGARCH_CSR_MERRENTRY); csr_write64(pcpu_handlers[cpu] + 80*VECSIZE, LOONGARCH_CSR_TLBRENTRY); - } #endif + } } void tlb_init(int cpu) diff --git a/arch/loongarch/vdso/Makefile b/arch/loongarch/vdso/Makefile index c74c9921304f..f597cd08a96b 100644 --- a/arch/loongarch/vdso/Makefile +++ b/arch/loongarch/vdso/Makefile @@ -2,6 +2,7 @@ # Objects to go into the VDSO. KASAN_SANITIZE := n +UBSAN_SANITIZE := n KCOV_INSTRUMENT := n # Include the generic Makefile to check the built vdso. diff --git a/arch/m68k/Makefile b/arch/m68k/Makefile index 43e39040d3ac..0abcf994ce55 100644 --- a/arch/m68k/Makefile +++ b/arch/m68k/Makefile @@ -15,10 +15,10 @@ KBUILD_DEFCONFIG := multi_defconfig ifdef cross_compiling - ifeq ($(CROSS_COMPILE),) + ifeq ($(CROSS_COMPILE),) CROSS_COMPILE := $(call cc-cross-prefix, \ m68k-linux-gnu- m68k-linux- m68k-unknown-linux-gnu-) - endif + endif endif # diff --git a/arch/m68k/emu/nfblock.c b/arch/m68k/emu/nfblock.c index a708fbd5a844..642fb80c5c4e 100644 --- a/arch/m68k/emu/nfblock.c +++ b/arch/m68k/emu/nfblock.c @@ -96,6 +96,9 @@ static const struct block_device_operations nfhd_ops = { static int __init nfhd_init_one(int id, u32 blocks, u32 bsize) { + struct queue_limits lim = { + .logical_block_size = bsize, + }; struct nfhd_device *dev; int dev_id = id - NFHD_DEV_OFFSET; int err = -ENOMEM; @@ -117,9 +120,11 @@ static int __init nfhd_init_one(int id, u32 blocks, u32 bsize) dev->bsize = bsize; dev->bshift = ffs(bsize) - 10; - dev->disk = blk_alloc_disk(NUMA_NO_NODE); - if (!dev->disk) + dev->disk = blk_alloc_disk(&lim, NUMA_NO_NODE); + if (IS_ERR(dev->disk)) { + err = PTR_ERR(dev->disk); goto free_dev; + } dev->disk->major = major_num; dev->disk->first_minor = dev_id * 16; @@ -128,7 +133,6 @@ static int __init nfhd_init_one(int id, u32 blocks, u32 bsize) dev->disk->private_data = dev; sprintf(dev->disk->disk_name, "nfhd%u", dev_id); set_capacity(dev->disk, (sector_t)blocks * (bsize / 512)); - blk_queue_logical_block_size(dev->disk->queue, bsize); err = add_disk(dev->disk); if (err) goto out_cleanup_disk; diff --git a/arch/mips/alchemy/common/prom.c b/arch/mips/alchemy/common/prom.c index b13d8adf3be4..20d30f6265cd 100644 --- a/arch/mips/alchemy/common/prom.c +++ b/arch/mips/alchemy/common/prom.c @@ -40,6 +40,7 @@ #include <linux/string.h> #include <asm/bootinfo.h> +#include <prom.h> int prom_argc; char **prom_argv; diff --git a/arch/mips/alchemy/common/setup.c b/arch/mips/alchemy/common/setup.c index 2388d68786f4..a7a6d31a7a41 100644 --- a/arch/mips/alchemy/common/setup.c +++ b/arch/mips/alchemy/common/setup.c @@ -30,13 +30,11 @@ #include <linux/mm.h> #include <linux/dma-map-ops.h> /* for dma_default_coherent */ +#include <asm/bootinfo.h> #include <asm/mipsregs.h> #include <au1000.h> -extern void __init board_setup(void); -extern void __init alchemy_set_lpj(void); - static bool alchemy_dma_coherent(void) { switch (alchemy_get_cputype()) { diff --git a/arch/mips/bcm63xx/boards/board_bcm963xx.c b/arch/mips/bcm63xx/boards/board_bcm963xx.c index 01aff80a5967..99f321b6e417 100644 --- a/arch/mips/bcm63xx/boards/board_bcm963xx.c +++ b/arch/mips/bcm63xx/boards/board_bcm963xx.c @@ -702,7 +702,7 @@ static struct ssb_sprom bcm63xx_sprom = { .boardflags_hi = 0x0000, }; -int bcm63xx_get_fallback_sprom(struct ssb_bus *bus, struct ssb_sprom *out) +static int bcm63xx_get_fallback_sprom(struct ssb_bus *bus, struct ssb_sprom *out) { if (bus->bustype == SSB_BUSTYPE_PCI) { memcpy(out, &bcm63xx_sprom, sizeof(struct ssb_sprom)); diff --git a/arch/mips/bcm63xx/dev-rng.c b/arch/mips/bcm63xx/dev-rng.c index d277b4dc6c68..f94151f7c96f 100644 --- a/arch/mips/bcm63xx/dev-rng.c +++ b/arch/mips/bcm63xx/dev-rng.c @@ -26,7 +26,7 @@ static struct platform_device bcm63xx_rng_device = { .resource = rng_resources, }; -int __init bcm63xx_rng_register(void) +static int __init bcm63xx_rng_register(void) { if (!BCMCPU_IS_6368()) return -ENODEV; diff --git a/arch/mips/bcm63xx/dev-uart.c b/arch/mips/bcm63xx/dev-uart.c index 3bc7f3bfc9ad..5d6bf0445b29 100644 --- a/arch/mips/bcm63xx/dev-uart.c +++ b/arch/mips/bcm63xx/dev-uart.c @@ -10,6 +10,7 @@ #include <linux/kernel.h> #include <linux/platform_device.h> #include <bcm63xx_cpu.h> +#include <bcm63xx_dev_uart.h> static struct resource uart0_resources[] = { { diff --git a/arch/mips/bcm63xx/dev-wdt.c b/arch/mips/bcm63xx/dev-wdt.c index 42130914a3c2..302bf7ed5ad5 100644 --- a/arch/mips/bcm63xx/dev-wdt.c +++ b/arch/mips/bcm63xx/dev-wdt.c @@ -34,7 +34,7 @@ static struct platform_device bcm63xx_wdt_device = { }, }; -int __init bcm63xx_wdt_register(void) +static int __init bcm63xx_wdt_register(void) { wdt_resources[0].start = bcm63xx_regset_address(RSET_WDT); wdt_resources[0].end = wdt_resources[0].start; diff --git a/arch/mips/bcm63xx/irq.c b/arch/mips/bcm63xx/irq.c index 2548013442f6..6240a8f88ea3 100644 --- a/arch/mips/bcm63xx/irq.c +++ b/arch/mips/bcm63xx/irq.c @@ -72,7 +72,7 @@ static inline int enable_irq_for_cpu(int cpu, struct irq_data *d, */ #define BUILD_IPIC_INTERNAL(width) \ -void __dispatch_internal_##width(int cpu) \ +static void __dispatch_internal_##width(int cpu) \ { \ u32 pending[width / 32]; \ unsigned int src, tgt; \ diff --git a/arch/mips/bcm63xx/setup.c b/arch/mips/bcm63xx/setup.c index d811e3e03f81..c13ddb544a23 100644 --- a/arch/mips/bcm63xx/setup.c +++ b/arch/mips/bcm63xx/setup.c @@ -159,7 +159,7 @@ void __init plat_mem_setup(void) board_setup(); } -int __init bcm63xx_register_devices(void) +static int __init bcm63xx_register_devices(void) { /* register gpiochip */ bcm63xx_gpio_init(); diff --git a/arch/mips/bcm63xx/timer.c b/arch/mips/bcm63xx/timer.c index a86065854c0c..74b83807df30 100644 --- a/arch/mips/bcm63xx/timer.c +++ b/arch/mips/bcm63xx/timer.c @@ -178,7 +178,7 @@ int bcm63xx_timer_set(int id, int monotonic, unsigned int countdown_us) EXPORT_SYMBOL(bcm63xx_timer_set); -int bcm63xx_timer_init(void) +static int bcm63xx_timer_init(void) { int ret, irq; u32 reg; diff --git a/arch/mips/cobalt/setup.c b/arch/mips/cobalt/setup.c index 2e099d55a564..9a266bf78339 100644 --- a/arch/mips/cobalt/setup.c +++ b/arch/mips/cobalt/setup.c @@ -23,9 +23,6 @@ #include <cobalt.h> -extern void cobalt_machine_restart(char *command); -extern void cobalt_machine_halt(void); - const char *get_system_type(void) { switch (cobalt_board_id) { diff --git a/arch/mips/fw/arc/memory.c b/arch/mips/fw/arc/memory.c index 66188739f54d..fb78e6fd5de4 100644 --- a/arch/mips/fw/arc/memory.c +++ b/arch/mips/fw/arc/memory.c @@ -37,7 +37,7 @@ static unsigned int nr_prom_mem __initdata; */ #define ARC_PAGE_SHIFT 12 -struct linux_mdesc * __init ArcGetMemoryDescriptor(struct linux_mdesc *Current) +static struct linux_mdesc * __init ArcGetMemoryDescriptor(struct linux_mdesc *Current) { return (struct linux_mdesc *) ARC_CALL1(get_mdesc, Current); } diff --git a/arch/mips/include/asm/checksum.h b/arch/mips/include/asm/checksum.h index 4044eaf989ac..0921ddda11a4 100644 --- a/arch/mips/include/asm/checksum.h +++ b/arch/mips/include/asm/checksum.h @@ -241,7 +241,8 @@ static __inline__ __sum16 csum_ipv6_magic(const struct in6_addr *saddr, " .set pop" : "=&r" (sum), "=&r" (tmp) : "r" (saddr), "r" (daddr), - "0" (htonl(len)), "r" (htonl(proto)), "r" (sum)); + "0" (htonl(len)), "r" (htonl(proto)), "r" (sum) + : "memory"); return csum_fold(sum); } diff --git a/arch/mips/include/asm/jump_label.h b/arch/mips/include/asm/jump_label.h index 081be98c71ef..ff5d388502d4 100644 --- a/arch/mips/include/asm/jump_label.h +++ b/arch/mips/include/asm/jump_label.h @@ -39,7 +39,7 @@ extern void jump_label_apply_nops(struct module *mod); static __always_inline bool arch_static_branch(struct static_key *key, bool branch) { - asm_volatile_goto("1:\t" B_INSN " 2f\n\t" + asm goto("1:\t" B_INSN " 2f\n\t" "2:\t.insn\n\t" ".pushsection __jump_table, \"aw\"\n\t" WORD_INSN " 1b, %l[l_yes], %0\n\t" @@ -53,7 +53,7 @@ l_yes: static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch) { - asm_volatile_goto("1:\t" J_INSN " %l[l_yes]\n\t" + asm goto("1:\t" J_INSN " %l[l_yes]\n\t" ".pushsection __jump_table, \"aw\"\n\t" WORD_INSN " 1b, %l[l_yes], %0\n\t" ".popsection\n\t" diff --git a/arch/mips/include/asm/mach-au1x00/au1000.h b/arch/mips/include/asm/mach-au1x00/au1000.h index a7eec3364a64..41546777902b 100644 --- a/arch/mips/include/asm/mach-au1x00/au1000.h +++ b/arch/mips/include/asm/mach-au1x00/au1000.h @@ -597,6 +597,9 @@ #include <asm/cpu.h> +void alchemy_set_lpj(void); +void board_setup(void); + /* helpers to access the SYS_* registers */ static inline unsigned long alchemy_rdsys(int regofs) { diff --git a/arch/mips/include/asm/mach-cobalt/cobalt.h b/arch/mips/include/asm/mach-cobalt/cobalt.h index 5b9fce73f11d..97f9d5e9446d 100644 --- a/arch/mips/include/asm/mach-cobalt/cobalt.h +++ b/arch/mips/include/asm/mach-cobalt/cobalt.h @@ -19,4 +19,7 @@ extern int cobalt_board_id; #define COBALT_BRD_ID_QUBE2 0x5 #define COBALT_BRD_ID_RAQ2 0x6 +void cobalt_machine_halt(void); +void cobalt_machine_restart(char *command); + #endif /* __ASM_COBALT_H */ diff --git a/arch/mips/include/asm/ptrace.h b/arch/mips/include/asm/ptrace.h index daf3cf244ea9..d14d0e37ad02 100644 --- a/arch/mips/include/asm/ptrace.h +++ b/arch/mips/include/asm/ptrace.h @@ -60,6 +60,7 @@ static inline void instruction_pointer_set(struct pt_regs *regs, unsigned long val) { regs->cp0_epc = val; + regs->cp0_cause &= ~CAUSEF_BD; } /* Query offset/name of register from its name/offset */ @@ -154,6 +155,8 @@ static inline long regs_return_value(struct pt_regs *regs) } #define instruction_pointer(regs) ((regs)->cp0_epc) +extern unsigned long exception_ip(struct pt_regs *regs); +#define exception_ip(regs) exception_ip(regs) #define profile_pc(regs) instruction_pointer(regs) extern asmlinkage long syscall_trace_enter(struct pt_regs *regs, long syscall); diff --git a/arch/mips/include/asm/vdso.h b/arch/mips/include/asm/vdso.h index cc7b516129a8..afb03d45bcd0 100644 --- a/arch/mips/include/asm/vdso.h +++ b/arch/mips/include/asm/vdso.h @@ -50,9 +50,4 @@ extern struct mips_vdso_image vdso_image_o32; extern struct mips_vdso_image vdso_image_n32; #endif -union mips_vdso_data { - struct vdso_data data[CS_BASES]; - u8 page[PAGE_SIZE]; -}; - #endif /* __ASM_VDSO_H */ diff --git a/arch/mips/kernel/elf.c b/arch/mips/kernel/elf.c index 5582a4ca1e9e..7aa2c2360ff6 100644 --- a/arch/mips/kernel/elf.c +++ b/arch/mips/kernel/elf.c @@ -11,6 +11,7 @@ #include <asm/cpu-features.h> #include <asm/cpu-info.h> +#include <asm/fpu.h> #ifdef CONFIG_MIPS_FP_SUPPORT @@ -309,6 +310,11 @@ void mips_set_personality_nan(struct arch_elf_state *state) struct cpuinfo_mips *c = &boot_cpu_data; struct task_struct *t = current; + /* Do this early so t->thread.fpu.fcr31 won't be clobbered in case + * we are preempted before the lose_fpu(0) in start_thread. + */ + lose_fpu(0); + t->thread.fpu.fcr31 = c->fpu_csr31; switch (state->nan_2008) { case 0: diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c index d9df543f7e2c..59288c13b581 100644 --- a/arch/mips/kernel/ptrace.c +++ b/arch/mips/kernel/ptrace.c @@ -31,6 +31,7 @@ #include <linux/seccomp.h> #include <linux/ftrace.h> +#include <asm/branch.h> #include <asm/byteorder.h> #include <asm/cpu.h> #include <asm/cpu-info.h> @@ -48,6 +49,12 @@ #define CREATE_TRACE_POINTS #include <trace/events/syscalls.h> +unsigned long exception_ip(struct pt_regs *regs) +{ + return exception_epc(regs); +} +EXPORT_SYMBOL(exception_ip); + /* * Called by kernel/ptrace.c when detaching.. * diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c index dec6878b35f6..a1c1cb5de913 100644 --- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -2007,7 +2007,13 @@ unsigned long vi_handlers[64]; void reserve_exception_space(phys_addr_t addr, unsigned long size) { - memblock_reserve(addr, size); + /* + * reserve exception space on CPUs other than CPU0 + * is too late, since memblock is unavailable when APs + * up + */ + if (smp_processor_id() == 0) + memblock_reserve(addr, size); } void __init *set_except_vector(int n, void *addr) diff --git a/arch/mips/kernel/vdso.c b/arch/mips/kernel/vdso.c index f6d40e43f108..dda36fa26307 100644 --- a/arch/mips/kernel/vdso.c +++ b/arch/mips/kernel/vdso.c @@ -24,7 +24,7 @@ #include <vdso/vsyscall.h> /* Kernel-provided data used by the VDSO. */ -static union mips_vdso_data mips_vdso_data __page_aligned_data; +static union vdso_data_store mips_vdso_data __page_aligned_data; struct vdso_data *vdso_data = mips_vdso_data.data; /* diff --git a/arch/mips/lantiq/prom.c b/arch/mips/lantiq/prom.c index a3cf29365858..0c45767eacf6 100644 --- a/arch/mips/lantiq/prom.c +++ b/arch/mips/lantiq/prom.c @@ -108,10 +108,9 @@ void __init prom_init(void) prom_init_cmdline(); #if defined(CONFIG_MIPS_MT_SMP) - if (cpu_has_mipsmt) { - lantiq_smp_ops = vsmp_smp_ops; + lantiq_smp_ops = vsmp_smp_ops; + if (cpu_has_mipsmt) lantiq_smp_ops.init_secondary = lantiq_init_secondary; - register_smp_ops(&lantiq_smp_ops); - } + register_smp_ops(&lantiq_smp_ops); #endif } diff --git a/arch/mips/loongson64/init.c b/arch/mips/loongson64/init.c index f25caa6aa9d3..553142c1f14f 100644 --- a/arch/mips/loongson64/init.c +++ b/arch/mips/loongson64/init.c @@ -103,6 +103,9 @@ void __init szmem(unsigned int node) if (loongson_sysconf.vgabios_addr) memblock_reserve(virt_to_phys((void *)loongson_sysconf.vgabios_addr), SZ_256K); + /* set nid for reserved memory */ + memblock_set_node((u64)node << 44, (u64)(node + 1) << 44, + &memblock.reserved, node); } #ifndef CONFIG_NUMA diff --git a/arch/mips/loongson64/numa.c b/arch/mips/loongson64/numa.c index 8f61e93c0c5b..68dafd6d3e25 100644 --- a/arch/mips/loongson64/numa.c +++ b/arch/mips/loongson64/numa.c @@ -132,6 +132,8 @@ static void __init node_mem_init(unsigned int node) /* Reserve pfn range 0~node[0]->node_start_pfn */ memblock_reserve(0, PAGE_SIZE * start_pfn); + /* set nid for reserved memory on node 0 */ + memblock_set_node(0, 1ULL << 44, &memblock.reserved, 0); } } diff --git a/arch/mips/sgi-ip27/Makefile b/arch/mips/sgi-ip27/Makefile index 27c14ede191e..9877fcc512b1 100644 --- a/arch/mips/sgi-ip27/Makefile +++ b/arch/mips/sgi-ip27/Makefile @@ -5,7 +5,7 @@ obj-y := ip27-berr.o ip27-irq.o ip27-init.o ip27-klconfig.o \ ip27-klnuma.o ip27-memory.o ip27-nmi.o ip27-reset.o ip27-timer.o \ - ip27-hubio.o ip27-xtalk.o + ip27-xtalk.o obj-$(CONFIG_EARLY_PRINTK) += ip27-console.o obj-$(CONFIG_SMP) += ip27-smp.o diff --git a/arch/mips/sgi-ip27/ip27-berr.c b/arch/mips/sgi-ip27/ip27-berr.c index 923a63a51cda..9eb497cb5d52 100644 --- a/arch/mips/sgi-ip27/ip27-berr.c +++ b/arch/mips/sgi-ip27/ip27-berr.c @@ -22,6 +22,8 @@ #include <asm/traps.h> #include <linux/uaccess.h> +#include "ip27-common.h" + static void dump_hub_information(unsigned long errst0, unsigned long errst1) { static char *err_type[2][8] = { @@ -57,7 +59,7 @@ static void dump_hub_information(unsigned long errst0, unsigned long errst1) [st0.pi_stat0_fmt.s0_err_type] ? : "invalid"); } -int ip27_be_handler(struct pt_regs *regs, int is_fixup) +static int ip27_be_handler(struct pt_regs *regs, int is_fixup) { unsigned long errst0, errst1; int data = regs->cp0_cause & 4; diff --git a/arch/mips/sgi-ip27/ip27-common.h b/arch/mips/sgi-ip27/ip27-common.h index ed008a08464c..a0059fa13934 100644 --- a/arch/mips/sgi-ip27/ip27-common.h +++ b/arch/mips/sgi-ip27/ip27-common.h @@ -10,6 +10,7 @@ extern void hub_rt_clock_event_init(void); extern void hub_rtc_init(nasid_t nasid); extern void install_cpu_nmi_handler(int slice); extern void install_ipi(void); +extern void ip27_be_init(void); extern void ip27_reboot_setup(void); extern const struct plat_smp_ops ip27_smp_ops; extern unsigned long node_getfirstfree(nasid_t nasid); @@ -17,4 +18,5 @@ extern void per_cpu_init(void); extern void replicate_kernel_text(void); extern void setup_replication_mask(void); + #endif /* __IP27_COMMON_H */ diff --git a/arch/mips/sgi-ip27/ip27-hubio.c b/arch/mips/sgi-ip27/ip27-hubio.c deleted file mode 100644 index c57f0d8f3218..000000000000 --- a/arch/mips/sgi-ip27/ip27-hubio.c +++ /dev/null @@ -1,185 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (C) 1992-1997, 2000-2003 Silicon Graphics, Inc. - * Copyright (C) 2004 Christoph Hellwig. - * - * Support functions for the HUB ASIC - mostly PIO mapping related. - */ - -#include <linux/bitops.h> -#include <linux/string.h> -#include <linux/mmzone.h> -#include <asm/sn/addrs.h> -#include <asm/sn/arch.h> -#include <asm/sn/agent.h> -#include <asm/sn/io.h> -#include <asm/xtalk/xtalk.h> - - -static int force_fire_and_forget = 1; - -/** - * hub_pio_map - establish a HUB PIO mapping - * - * @nasid: nasid to perform PIO mapping on - * @widget: widget ID to perform PIO mapping for - * @xtalk_addr: xtalk_address that needs to be mapped - * @size: size of the PIO mapping - * - **/ -unsigned long hub_pio_map(nasid_t nasid, xwidgetnum_t widget, - unsigned long xtalk_addr, size_t size) -{ - unsigned i; - - /* use small-window mapping if possible */ - if ((xtalk_addr % SWIN_SIZE) + size <= SWIN_SIZE) - return NODE_SWIN_BASE(nasid, widget) + (xtalk_addr % SWIN_SIZE); - - if ((xtalk_addr % BWIN_SIZE) + size > BWIN_SIZE) { - printk(KERN_WARNING "PIO mapping at hub %d widget %d addr 0x%lx" - " too big (%ld)\n", - nasid, widget, xtalk_addr, size); - return 0; - } - - xtalk_addr &= ~(BWIN_SIZE-1); - for (i = 0; i < HUB_NUM_BIG_WINDOW; i++) { - if (test_and_set_bit(i, hub_data(nasid)->h_bigwin_used)) - continue; - - /* - * The code below does a PIO write to setup an ITTE entry. - * - * We need to prevent other CPUs from seeing our updated - * memory shadow of the ITTE (in the piomap) until the ITTE - * entry is actually set up; otherwise, another CPU might - * attempt a PIO prematurely. - * - * Also, the only way we can know that an entry has been - * received by the hub and can be used by future PIO reads/ - * writes is by reading back the ITTE entry after writing it. - * - * For these two reasons, we PIO read back the ITTE entry - * after we write it. - */ - IIO_ITTE_PUT(nasid, i, HUB_PIO_MAP_TO_MEM, widget, xtalk_addr); - __raw_readq(IIO_ITTE_GET(nasid, i)); - - return NODE_BWIN_BASE(nasid, widget) + (xtalk_addr % BWIN_SIZE); - } - - printk(KERN_WARNING "unable to establish PIO mapping for at" - " hub %d widget %d addr 0x%lx\n", - nasid, widget, xtalk_addr); - return 0; -} - - -/* - * hub_setup_prb(nasid, prbnum, credits, conveyor) - * - * Put a PRB into fire-and-forget mode if conveyor isn't set. Otherwise, - * put it into conveyor belt mode with the specified number of credits. - */ -static void hub_setup_prb(nasid_t nasid, int prbnum, int credits) -{ - union iprb_u prb; - int prb_offset; - - /* - * Get the current register value. - */ - prb_offset = IIO_IOPRB(prbnum); - prb.iprb_regval = REMOTE_HUB_L(nasid, prb_offset); - - /* - * Clear out some fields. - */ - prb.iprb_ovflow = 1; - prb.iprb_bnakctr = 0; - prb.iprb_anakctr = 0; - - /* - * Enable or disable fire-and-forget mode. - */ - prb.iprb_ff = force_fire_and_forget ? 1 : 0; - - /* - * Set the appropriate number of PIO credits for the widget. - */ - prb.iprb_xtalkctr = credits; - - /* - * Store the new value to the register. - */ - REMOTE_HUB_S(nasid, prb_offset, prb.iprb_regval); -} - -/** - * hub_set_piomode - set pio mode for a given hub - * - * @nasid: physical node ID for the hub in question - * - * Put the hub into either "PIO conveyor belt" mode or "fire-and-forget" mode. - * To do this, we have to make absolutely sure that no PIOs are in progress - * so we turn off access to all widgets for the duration of the function. - * - * XXX - This code should really check what kind of widget we're talking - * to. Bridges can only handle three requests, but XG will do more. - * How many can crossbow handle to widget 0? We're assuming 1. - * - * XXX - There is a bug in the crossbow that link reset PIOs do not - * return write responses. The easiest solution to this problem is to - * leave widget 0 (xbow) in fire-and-forget mode at all times. This - * only affects pio's to xbow registers, which should be rare. - **/ -static void hub_set_piomode(nasid_t nasid) -{ - u64 ii_iowa; - union hubii_wcr_u ii_wcr; - unsigned i; - - ii_iowa = REMOTE_HUB_L(nasid, IIO_OUTWIDGET_ACCESS); - REMOTE_HUB_S(nasid, IIO_OUTWIDGET_ACCESS, 0); - - ii_wcr.wcr_reg_value = REMOTE_HUB_L(nasid, IIO_WCR); - - if (ii_wcr.iwcr_dir_con) { - /* - * Assume a bridge here. - */ - hub_setup_prb(nasid, 0, 3); - } else { - /* - * Assume a crossbow here. - */ - hub_setup_prb(nasid, 0, 1); - } - - /* - * XXX - Here's where we should take the widget type into - * when account assigning credits. - */ - for (i = HUB_WIDGET_ID_MIN; i <= HUB_WIDGET_ID_MAX; i++) - hub_setup_prb(nasid, i, 3); - - REMOTE_HUB_S(nasid, IIO_OUTWIDGET_ACCESS, ii_iowa); -} - -/* - * hub_pio_init - PIO-related hub initialization - * - * @hub: hubinfo structure for our hub - */ -void hub_pio_init(nasid_t nasid) -{ - unsigned i; - - /* initialize big window piomaps for this hub */ - bitmap_zero(hub_data(nasid)->h_bigwin_used, HUB_NUM_BIG_WINDOW); - for (i = 0; i < HUB_NUM_BIG_WINDOW; i++) - IIO_ITTE_DISABLE(nasid, i); - - hub_set_piomode(nasid); -} diff --git a/arch/mips/sgi-ip27/ip27-irq.c b/arch/mips/sgi-ip27/ip27-irq.c index a0dd3bd2b81b..8f5299b269e7 100644 --- a/arch/mips/sgi-ip27/ip27-irq.c +++ b/arch/mips/sgi-ip27/ip27-irq.c @@ -23,6 +23,8 @@ #include <asm/sn/intr.h> #include <asm/sn/irq_alloc.h> +#include "ip27-common.h" + struct hub_irq_data { u64 *irq_mask[2]; cpuid_t cpu; diff --git a/arch/mips/sgi-ip27/ip27-memory.c b/arch/mips/sgi-ip27/ip27-memory.c index f79c48393716..b8ca94cfb4fe 100644 --- a/arch/mips/sgi-ip27/ip27-memory.c +++ b/arch/mips/sgi-ip27/ip27-memory.c @@ -23,6 +23,7 @@ #include <asm/page.h> #include <asm/pgalloc.h> #include <asm/sections.h> +#include <asm/sgialib.h> #include <asm/sn/arch.h> #include <asm/sn/agent.h> diff --git a/arch/mips/sgi-ip27/ip27-nmi.c b/arch/mips/sgi-ip27/ip27-nmi.c index 84889b57d5ff..fc2816398d0c 100644 --- a/arch/mips/sgi-ip27/ip27-nmi.c +++ b/arch/mips/sgi-ip27/ip27-nmi.c @@ -11,6 +11,8 @@ #include <asm/sn/arch.h> #include <asm/sn/agent.h> +#include "ip27-common.h" + #if 0 #define NODE_NUM_CPUS(n) CNODE_NUM_CPUS(n) #else @@ -23,16 +25,7 @@ typedef unsigned long machreg_t; static arch_spinlock_t nmi_lock = __ARCH_SPIN_LOCK_UNLOCKED; - -/* - * Let's see what else we need to do here. Set up sp, gp? - */ -void nmi_dump(void) -{ - void cont_nmi_dump(void); - - cont_nmi_dump(); -} +static void nmi_dump(void); void install_cpu_nmi_handler(int slice) { @@ -53,7 +46,7 @@ void install_cpu_nmi_handler(int slice) * into the eframe format for the node under consideration. */ -void nmi_cpu_eframe_save(nasid_t nasid, int slice) +static void nmi_cpu_eframe_save(nasid_t nasid, int slice) { struct reg_struct *nr; int i; @@ -129,7 +122,7 @@ void nmi_cpu_eframe_save(nasid_t nasid, int slice) pr_emerg("\n"); } -void nmi_dump_hub_irq(nasid_t nasid, int slice) +static void nmi_dump_hub_irq(nasid_t nasid, int slice) { u64 mask0, mask1, pend0, pend1; @@ -153,7 +146,7 @@ void nmi_dump_hub_irq(nasid_t nasid, int slice) * Copy the cpu registers which have been saved in the IP27prom format * into the eframe format for the node under consideration. */ -void nmi_node_eframe_save(nasid_t nasid) +static void nmi_node_eframe_save(nasid_t nasid) { int slice; @@ -170,8 +163,7 @@ void nmi_node_eframe_save(nasid_t nasid) /* * Save the nmi cpu registers for all cpus in the system. */ -void -nmi_eframes_save(void) +static void nmi_eframes_save(void) { nasid_t nasid; @@ -179,8 +171,7 @@ nmi_eframes_save(void) nmi_node_eframe_save(nasid); } -void -cont_nmi_dump(void) +static void nmi_dump(void) { #ifndef REAL_NMI_SIGNAL static atomic_t nmied_cpus = ATOMIC_INIT(0); diff --git a/arch/mips/sgi-ip30/ip30-console.c b/arch/mips/sgi-ip30/ip30-console.c index b91f8c4fdc78..7c6dcf6e73f7 100644 --- a/arch/mips/sgi-ip30/ip30-console.c +++ b/arch/mips/sgi-ip30/ip30-console.c @@ -3,6 +3,7 @@ #include <linux/io.h> #include <asm/sn/ioc3.h> +#include <asm/setup.h> static inline struct ioc3_uartregs *console_uart(void) { diff --git a/arch/mips/sgi-ip30/ip30-setup.c b/arch/mips/sgi-ip30/ip30-setup.c index 75a34684e704..e8547636a748 100644 --- a/arch/mips/sgi-ip30/ip30-setup.c +++ b/arch/mips/sgi-ip30/ip30-setup.c @@ -14,6 +14,7 @@ #include <linux/percpu.h> #include <linux/memblock.h> +#include <asm/bootinfo.h> #include <asm/smp-ops.h> #include <asm/sgialib.h> #include <asm/time.h> diff --git a/arch/mips/sgi-ip32/crime.c b/arch/mips/sgi-ip32/crime.c index a8e0c776ca6c..b8a0e4cfa9ce 100644 --- a/arch/mips/sgi-ip32/crime.c +++ b/arch/mips/sgi-ip32/crime.c @@ -18,6 +18,8 @@ #include <asm/ip32/crime.h> #include <asm/ip32/mace.h> +#include "ip32-common.h" + struct sgi_crime __iomem *crime; struct sgi_mace __iomem *mace; @@ -39,7 +41,7 @@ void __init crime_init(void) id, rev, field, (unsigned long) CRIME_BASE); } -irqreturn_t crime_memerr_intr(unsigned int irq, void *dev_id) +irqreturn_t crime_memerr_intr(int irq, void *dev_id) { unsigned long stat, addr; int fatal = 0; @@ -90,7 +92,7 @@ irqreturn_t crime_memerr_intr(unsigned int irq, void *dev_id) return IRQ_HANDLED; } -irqreturn_t crime_cpuerr_intr(unsigned int irq, void *dev_id) +irqreturn_t crime_cpuerr_intr(int irq, void *dev_id) { unsigned long stat = crime->cpu_error_stat & CRIME_CPU_ERROR_MASK; unsigned long addr = crime->cpu_error_addr & CRIME_CPU_ERROR_ADDR_MASK; diff --git a/arch/mips/sgi-ip32/ip32-berr.c b/arch/mips/sgi-ip32/ip32-berr.c index 478b63b4c808..7cbc27941f92 100644 --- a/arch/mips/sgi-ip32/ip32-berr.c +++ b/arch/mips/sgi-ip32/ip32-berr.c @@ -18,6 +18,8 @@ #include <asm/ptrace.h> #include <asm/tlbdebug.h> +#include "ip32-common.h" + static int ip32_be_handler(struct pt_regs *regs, int is_fixup) { int data = regs->cp0_cause & 4; diff --git a/arch/mips/sgi-ip32/ip32-common.h b/arch/mips/sgi-ip32/ip32-common.h new file mode 100644 index 000000000000..cfc0225b1419 --- /dev/null +++ b/arch/mips/sgi-ip32/ip32-common.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef __IP32_COMMON_H +#define __IP32_COMMON_H + +#include <linux/init.h> +#include <linux/interrupt.h> + +void __init crime_init(void); +irqreturn_t crime_memerr_intr(int irq, void *dev_id); +irqreturn_t crime_cpuerr_intr(int irq, void *dev_id); +void __init ip32_be_init(void); +void ip32_prepare_poweroff(void); + +#endif /* __IP32_COMMON_H */ diff --git a/arch/mips/sgi-ip32/ip32-irq.c b/arch/mips/sgi-ip32/ip32-irq.c index e21ea1de05e3..29d04468a06b 100644 --- a/arch/mips/sgi-ip32/ip32-irq.c +++ b/arch/mips/sgi-ip32/ip32-irq.c @@ -28,6 +28,8 @@ #include <asm/ip32/mace.h> #include <asm/ip32/ip32_ints.h> +#include "ip32-common.h" + /* issue a PIO read to make sure no PIO writes are pending */ static inline void flush_crime_bus(void) { @@ -107,10 +109,6 @@ static inline void flush_mace_bus(void) * is quite different anyway. */ -/* Some initial interrupts to set up */ -extern irqreturn_t crime_memerr_intr(int irq, void *dev_id); -extern irqreturn_t crime_cpuerr_intr(int irq, void *dev_id); - /* * This is for pure CRIME interrupts - ie not MACE. The advantage? * We get to split the register in half and do faster lookups. diff --git a/arch/mips/sgi-ip32/ip32-memory.c b/arch/mips/sgi-ip32/ip32-memory.c index 3fc8d0a0bdfa..5fee33744f67 100644 --- a/arch/mips/sgi-ip32/ip32-memory.c +++ b/arch/mips/sgi-ip32/ip32-memory.c @@ -15,6 +15,7 @@ #include <asm/ip32/crime.h> #include <asm/bootinfo.h> #include <asm/page.h> +#include <asm/sgialib.h> extern void crime_init(void); diff --git a/arch/mips/sgi-ip32/ip32-reset.c b/arch/mips/sgi-ip32/ip32-reset.c index 18d1c115cd53..6bdc1421cda4 100644 --- a/arch/mips/sgi-ip32/ip32-reset.c +++ b/arch/mips/sgi-ip32/ip32-reset.c @@ -29,6 +29,8 @@ #include <asm/ip32/crime.h> #include <asm/ip32/ip32_ints.h> +#include "ip32-common.h" + #define POWERDOWN_TIMEOUT 120 /* * Blink frequency during reboot grace period and when panicked. diff --git a/arch/mips/sgi-ip32/ip32-setup.c b/arch/mips/sgi-ip32/ip32-setup.c index 8019dae1721a..aeb0805aae57 100644 --- a/arch/mips/sgi-ip32/ip32-setup.c +++ b/arch/mips/sgi-ip32/ip32-setup.c @@ -26,8 +26,7 @@ #include <asm/ip32/mace.h> #include <asm/ip32/ip32_ints.h> -extern void ip32_be_init(void); -extern void crime_init(void); +#include "ip32-common.h" #ifdef CONFIG_SGI_O2MACE_ETH /* diff --git a/arch/openrisc/kernel/smp.c b/arch/openrisc/kernel/smp.c index 1c5a2d71d675..86da4bc5ee0b 100644 --- a/arch/openrisc/kernel/smp.c +++ b/arch/openrisc/kernel/smp.c @@ -57,10 +57,6 @@ static void boot_secondary(unsigned int cpu, struct task_struct *idle) spin_unlock(&boot_lock); } -void __init smp_prepare_boot_cpu(void) -{ -} - void __init smp_init_cpus(void) { struct device_node *cpu; diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index d14ccc948a29..5c845e8d59d9 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -25,7 +25,6 @@ config PARISC select RTC_DRV_GENERIC select INIT_ALL_POSSIBLE select BUG - select BUILDTIME_TABLE_SORT select HAVE_KERNEL_UNCOMPRESSED select HAVE_PCI select HAVE_PERF_EVENTS diff --git a/arch/parisc/Makefile b/arch/parisc/Makefile index 920db57b6b4c..316f84f1d15c 100644 --- a/arch/parisc/Makefile +++ b/arch/parisc/Makefile @@ -50,12 +50,12 @@ export CROSS32CC # Set default cross compiler for kernel build ifdef cross_compiling - ifeq ($(CROSS_COMPILE),) + ifeq ($(CROSS_COMPILE),) CC_SUFFIXES = linux linux-gnu unknown-linux-gnu suse-linux CROSS_COMPILE := $(call cc-cross-prefix, \ $(foreach a,$(CC_ARCHES), \ $(foreach s,$(CC_SUFFIXES),$(a)-$(s)-))) - endif + endif endif ifdef CONFIG_DYNAMIC_FTRACE diff --git a/arch/parisc/include/asm/assembly.h b/arch/parisc/include/asm/assembly.h index 74d17d7e759d..5937d5edaba1 100644 --- a/arch/parisc/include/asm/assembly.h +++ b/arch/parisc/include/asm/assembly.h @@ -576,6 +576,7 @@ .section __ex_table,"aw" ! \ .align 4 ! \ .word (fault_addr - .), (except_addr - .) ! \ + or %r0,%r0,%r0 ! \ .previous diff --git a/arch/parisc/include/asm/extable.h b/arch/parisc/include/asm/extable.h new file mode 100644 index 000000000000..4ea23e3d79dc --- /dev/null +++ b/arch/parisc/include/asm/extable.h @@ -0,0 +1,64 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __PARISC_EXTABLE_H +#define __PARISC_EXTABLE_H + +#include <asm/ptrace.h> +#include <linux/compiler.h> + +/* + * The exception table consists of three addresses: + * + * - A relative address to the instruction that is allowed to fault. + * - A relative address at which the program should continue (fixup routine) + * - An asm statement which specifies which CPU register will + * receive -EFAULT when an exception happens if the lowest bit in + * the fixup address is set. + * + * Note: The register specified in the err_opcode instruction will be + * modified at runtime if a fault happens. Register %r0 will be ignored. + * + * Since relative addresses are used, 32bit values are sufficient even on + * 64bit kernel. + */ + +struct pt_regs; +int fixup_exception(struct pt_regs *regs); + +#define ARCH_HAS_RELATIVE_EXTABLE +struct exception_table_entry { + int insn; /* relative address of insn that is allowed to fault. */ + int fixup; /* relative address of fixup routine */ + int err_opcode; /* sample opcode with register which holds error code */ +}; + +#define ASM_EXCEPTIONTABLE_ENTRY( fault_addr, except_addr, opcode )\ + ".section __ex_table,\"aw\"\n" \ + ".align 4\n" \ + ".word (" #fault_addr " - .), (" #except_addr " - .)\n" \ + opcode "\n" \ + ".previous\n" + +/* + * ASM_EXCEPTIONTABLE_ENTRY_EFAULT() creates a special exception table entry + * (with lowest bit set) for which the fault handler in fixup_exception() will + * load -EFAULT on fault into the register specified by the err_opcode instruction, + * and zeroes the target register in case of a read fault in get_user(). + */ +#define ASM_EXCEPTIONTABLE_VAR(__err_var) \ + int __err_var = 0 +#define ASM_EXCEPTIONTABLE_ENTRY_EFAULT( fault_addr, except_addr, register )\ + ASM_EXCEPTIONTABLE_ENTRY( fault_addr, except_addr + 1, "or %%r0,%%r0," register) + +static inline void swap_ex_entry_fixup(struct exception_table_entry *a, + struct exception_table_entry *b, + struct exception_table_entry tmp, + int delta) +{ + a->fixup = b->fixup + delta; + b->fixup = tmp.fixup - delta; + a->err_opcode = b->err_opcode; + b->err_opcode = tmp.err_opcode; +} +#define swap_ex_entry_fixup swap_ex_entry_fixup + +#endif diff --git a/arch/parisc/include/asm/jump_label.h b/arch/parisc/include/asm/jump_label.h index 94428798b6aa..317ebc5edc9f 100644 --- a/arch/parisc/include/asm/jump_label.h +++ b/arch/parisc/include/asm/jump_label.h @@ -12,7 +12,7 @@ static __always_inline bool arch_static_branch(struct static_key *key, bool branch) { - asm_volatile_goto("1:\n\t" + asm goto("1:\n\t" "nop\n\t" ".pushsection __jump_table, \"aw\"\n\t" ".align %1\n\t" @@ -29,7 +29,7 @@ l_yes: static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch) { - asm_volatile_goto("1:\n\t" + asm goto("1:\n\t" "b,n %l[l_yes]\n\t" ".pushsection __jump_table, \"aw\"\n\t" ".align %1\n\t" diff --git a/arch/parisc/include/asm/kprobes.h b/arch/parisc/include/asm/kprobes.h index 0a175ac87698..0f42f5c8e3b6 100644 --- a/arch/parisc/include/asm/kprobes.h +++ b/arch/parisc/include/asm/kprobes.h @@ -10,9 +10,10 @@ #ifndef _PARISC_KPROBES_H #define _PARISC_KPROBES_H +#include <asm-generic/kprobes.h> + #ifdef CONFIG_KPROBES -#include <asm-generic/kprobes.h> #include <linux/types.h> #include <linux/ptrace.h> #include <linux/notifier.h> diff --git a/arch/parisc/include/asm/special_insns.h b/arch/parisc/include/asm/special_insns.h index c822bd0c0e3c..51f40eaf7780 100644 --- a/arch/parisc/include/asm/special_insns.h +++ b/arch/parisc/include/asm/special_insns.h @@ -8,7 +8,8 @@ "copy %%r0,%0\n" \ "8:\tlpa %%r0(%1),%0\n" \ "9:\n" \ - ASM_EXCEPTIONTABLE_ENTRY(8b, 9b) \ + ASM_EXCEPTIONTABLE_ENTRY(8b, 9b, \ + "or %%r0,%%r0,%%r0") \ : "=&r" (pa) \ : "r" (va) \ : "memory" \ @@ -22,7 +23,8 @@ "copy %%r0,%0\n" \ "8:\tlpa %%r0(%%sr3,%1),%0\n" \ "9:\n" \ - ASM_EXCEPTIONTABLE_ENTRY(8b, 9b) \ + ASM_EXCEPTIONTABLE_ENTRY(8b, 9b, \ + "or %%r0,%%r0,%%r0") \ : "=&r" (pa) \ : "r" (va) \ : "memory" \ diff --git a/arch/parisc/include/asm/uaccess.h b/arch/parisc/include/asm/uaccess.h index 4165079898d9..88d0ae5769dd 100644 --- a/arch/parisc/include/asm/uaccess.h +++ b/arch/parisc/include/asm/uaccess.h @@ -7,6 +7,7 @@ */ #include <asm/page.h> #include <asm/cache.h> +#include <asm/extable.h> #include <linux/bug.h> #include <linux/string.h> @@ -26,37 +27,6 @@ #define STD_USER(sr, x, ptr) __put_user_asm(sr, "std", x, ptr) #endif -/* - * The exception table contains two values: the first is the relative offset to - * the address of the instruction that is allowed to fault, and the second is - * the relative offset to the address of the fixup routine. Since relative - * addresses are used, 32bit values are sufficient even on 64bit kernel. - */ - -#define ARCH_HAS_RELATIVE_EXTABLE -struct exception_table_entry { - int insn; /* relative address of insn that is allowed to fault. */ - int fixup; /* relative address of fixup routine */ -}; - -#define ASM_EXCEPTIONTABLE_ENTRY( fault_addr, except_addr )\ - ".section __ex_table,\"aw\"\n" \ - ".align 4\n" \ - ".word (" #fault_addr " - .), (" #except_addr " - .)\n\t" \ - ".previous\n" - -/* - * ASM_EXCEPTIONTABLE_ENTRY_EFAULT() creates a special exception table entry - * (with lowest bit set) for which the fault handler in fixup_exception() will - * load -EFAULT into %r29 for a read or write fault, and zeroes the target - * register in case of a read fault in get_user(). - */ -#define ASM_EXCEPTIONTABLE_REG 29 -#define ASM_EXCEPTIONTABLE_VAR(__variable) \ - register long __variable __asm__ ("r29") = 0 -#define ASM_EXCEPTIONTABLE_ENTRY_EFAULT( fault_addr, except_addr )\ - ASM_EXCEPTIONTABLE_ENTRY( fault_addr, except_addr + 1) - #define __get_user_internal(sr, val, ptr) \ ({ \ ASM_EXCEPTIONTABLE_VAR(__gu_err); \ @@ -83,7 +53,7 @@ struct exception_table_entry { \ __asm__("1: " ldx " 0(%%sr%2,%3),%0\n" \ "9:\n" \ - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 9b) \ + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 9b, "%1") \ : "=r"(__gu_val), "+r"(__gu_err) \ : "i"(sr), "r"(ptr)); \ \ @@ -115,8 +85,8 @@ struct exception_table_entry { "1: ldw 0(%%sr%2,%3),%0\n" \ "2: ldw 4(%%sr%2,%3),%R0\n" \ "9:\n" \ - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 9b) \ - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(2b, 9b) \ + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 9b, "%1") \ + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(2b, 9b, "%1") \ : "=&r"(__gu_tmp.l), "+r"(__gu_err) \ : "i"(sr), "r"(ptr)); \ \ @@ -174,7 +144,7 @@ struct exception_table_entry { __asm__ __volatile__ ( \ "1: " stx " %1,0(%%sr%2,%3)\n" \ "9:\n" \ - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 9b) \ + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 9b, "%0") \ : "+r"(__pu_err) \ : "r"(x), "i"(sr), "r"(ptr)) @@ -186,15 +156,14 @@ struct exception_table_entry { "1: stw %1,0(%%sr%2,%3)\n" \ "2: stw %R1,4(%%sr%2,%3)\n" \ "9:\n" \ - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 9b) \ - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(2b, 9b) \ + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 9b, "%0") \ + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(2b, 9b, "%0") \ : "+r"(__pu_err) \ : "r"(__val), "i"(sr), "r"(ptr)); \ } while (0) #endif /* !defined(CONFIG_64BIT) */ - /* * Complex access routines -- external declarations */ @@ -216,7 +185,4 @@ unsigned long __must_check raw_copy_from_user(void *dst, const void __user *src, #define INLINE_COPY_TO_USER #define INLINE_COPY_FROM_USER -struct pt_regs; -int fixup_exception(struct pt_regs *regs); - #endif /* __PARISC_UACCESS_H */ diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c index 268d90a9325b..422f3e1e6d9c 100644 --- a/arch/parisc/kernel/cache.c +++ b/arch/parisc/kernel/cache.c @@ -58,7 +58,7 @@ int pa_serialize_tlb_flushes __ro_after_init; struct pdc_cache_info cache_info __ro_after_init; #ifndef CONFIG_PA20 -struct pdc_btlb_info btlb_info __ro_after_init; +struct pdc_btlb_info btlb_info; #endif DEFINE_STATIC_KEY_TRUE(parisc_has_cache); @@ -264,6 +264,10 @@ parisc_cache_init(void) icache_stride = CAFL_STRIDE(cache_info.ic_conf); #undef CAFL_STRIDE + /* stride needs to be non-zero, otherwise cache flushes will not work */ + WARN_ON(cache_info.dc_size && dcache_stride == 0); + WARN_ON(cache_info.ic_size && icache_stride == 0); + if ((boot_cpu_data.pdc.capabilities & PDC_MODEL_NVA_MASK) == PDC_MODEL_NVA_UNSUPPORTED) { printk(KERN_WARNING "parisc_cache_init: Only equivalent aliasing supported!\n"); @@ -850,7 +854,7 @@ SYSCALL_DEFINE3(cacheflush, unsigned long, addr, unsigned long, bytes, #endif " fic,m %3(%4,%0)\n" "2: sync\n" - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 2b) + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 2b, "%1") : "+r" (start), "+r" (error) : "r" (end), "r" (dcache_stride), "i" (SR_USER)); } @@ -865,7 +869,7 @@ SYSCALL_DEFINE3(cacheflush, unsigned long, addr, unsigned long, bytes, #endif " fdc,m %3(%4,%0)\n" "2: sync\n" - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 2b) + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 2b, "%1") : "+r" (start), "+r" (error) : "r" (end), "r" (icache_stride), "i" (SR_USER)); } diff --git a/arch/parisc/kernel/drivers.c b/arch/parisc/kernel/drivers.c index 25f9b9e9d6df..c7ff339732ba 100644 --- a/arch/parisc/kernel/drivers.c +++ b/arch/parisc/kernel/drivers.c @@ -742,7 +742,7 @@ parse_tree_node(struct device *parent, int index, struct hardware_path *modpath) }; if (device_for_each_child(parent, &recurse_data, descend_children)) - { /* nothing */ }; + { /* nothing */ } return d.dev; } @@ -1004,6 +1004,9 @@ static __init int qemu_print_iodc_data(struct device *lin_dev, void *data) pr_info("\n"); + /* Prevent hung task messages when printing on serial console */ + cond_resched(); + pr_info("#define HPA_%08lx_DESCRIPTION \"%s\"\n", hpa, parisc_hardware_description(&dev->id)); diff --git a/arch/parisc/kernel/ftrace.c b/arch/parisc/kernel/ftrace.c index d1defb9ede70..621a4b386ae4 100644 --- a/arch/parisc/kernel/ftrace.c +++ b/arch/parisc/kernel/ftrace.c @@ -78,7 +78,7 @@ asmlinkage void notrace __hot ftrace_function_trampoline(unsigned long parent, #endif } -#ifdef CONFIG_FUNCTION_GRAPH_TRACER +#if defined(CONFIG_DYNAMIC_FTRACE) && defined(CONFIG_FUNCTION_GRAPH_TRACER) int ftrace_enable_ftrace_graph_caller(void) { static_key_enable(&ftrace_graph_enable.key); diff --git a/arch/parisc/kernel/processor.c b/arch/parisc/kernel/processor.c index e95a977ba5f3..bf73562706b2 100644 --- a/arch/parisc/kernel/processor.c +++ b/arch/parisc/kernel/processor.c @@ -172,7 +172,6 @@ static int __init processor_probe(struct parisc_device *dev) p->cpu_num = cpu_info.cpu_num; p->cpu_loc = cpu_info.cpu_loc; - set_cpu_possible(cpuid, true); store_cpu_topology(cpuid); #ifdef CONFIG_SMP @@ -474,13 +473,6 @@ static struct parisc_driver cpu_driver __refdata = { */ void __init processor_init(void) { - unsigned int cpu; - reset_cpu_topology(); - - /* reset possible mask. We will mark those which are possible. */ - for_each_possible_cpu(cpu) - set_cpu_possible(cpu, false); - register_parisc_driver(&cpu_driver); } diff --git a/arch/parisc/kernel/unaligned.c b/arch/parisc/kernel/unaligned.c index ce25acfe4889..c520e551a165 100644 --- a/arch/parisc/kernel/unaligned.c +++ b/arch/parisc/kernel/unaligned.c @@ -120,8 +120,8 @@ static int emulate_ldh(struct pt_regs *regs, int toreg) "2: ldbs 1(%%sr1,%3), %0\n" " depw %2, 23, 24, %0\n" "3: \n" - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 3b) - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(2b, 3b) + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 3b, "%1") + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(2b, 3b, "%1") : "+r" (val), "+r" (ret), "=&r" (temp1) : "r" (saddr), "r" (regs->isr) ); @@ -152,8 +152,8 @@ static int emulate_ldw(struct pt_regs *regs, int toreg, int flop) " mtctl %2,11\n" " vshd %0,%3,%0\n" "3: \n" - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 3b) - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(2b, 3b) + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 3b, "%1") + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(2b, 3b, "%1") : "+r" (val), "+r" (ret), "=&r" (temp1), "=&r" (temp2) : "r" (saddr), "r" (regs->isr) ); @@ -189,8 +189,8 @@ static int emulate_ldd(struct pt_regs *regs, int toreg, int flop) " mtsar %%r19\n" " shrpd %0,%%r20,%%sar,%0\n" "3: \n" - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 3b) - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(2b, 3b) + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 3b, "%1") + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(2b, 3b, "%1") : "=r" (val), "+r" (ret) : "0" (val), "r" (saddr), "r" (regs->isr) : "r19", "r20" ); @@ -209,9 +209,9 @@ static int emulate_ldd(struct pt_regs *regs, int toreg, int flop) " vshd %0,%R0,%0\n" " vshd %R0,%4,%R0\n" "4: \n" - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 4b) - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(2b, 4b) - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(3b, 4b) + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 4b, "%1") + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(2b, 4b, "%1") + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(3b, 4b, "%1") : "+r" (val), "+r" (ret), "+r" (saddr), "=&r" (shift), "=&r" (temp1) : "r" (regs->isr) ); } @@ -244,8 +244,8 @@ static int emulate_sth(struct pt_regs *regs, int frreg) "1: stb %1, 0(%%sr1, %3)\n" "2: stb %2, 1(%%sr1, %3)\n" "3: \n" - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 3b) - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(2b, 3b) + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 3b, "%0") + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(2b, 3b, "%0") : "+r" (ret), "=&r" (temp1) : "r" (val), "r" (regs->ior), "r" (regs->isr) ); @@ -285,8 +285,8 @@ static int emulate_stw(struct pt_regs *regs, int frreg, int flop) " stw %%r20,0(%%sr1,%2)\n" " stw %%r21,4(%%sr1,%2)\n" "3: \n" - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 3b) - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(2b, 3b) + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 3b, "%0") + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(2b, 3b, "%0") : "+r" (ret) : "r" (val), "r" (regs->ior), "r" (regs->isr) : "r19", "r20", "r21", "r22", "r1" ); @@ -329,10 +329,10 @@ static int emulate_std(struct pt_regs *regs, int frreg, int flop) "3: std %%r20,0(%%sr1,%2)\n" "4: std %%r21,8(%%sr1,%2)\n" "5: \n" - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 5b) - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(2b, 5b) - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(3b, 5b) - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(4b, 5b) + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 5b, "%0") + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(2b, 5b, "%0") + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(3b, 5b, "%0") + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(4b, 5b, "%0") : "+r" (ret) : "r" (val), "r" (regs->ior), "r" (regs->isr) : "r19", "r20", "r21", "r22", "r1" ); @@ -357,11 +357,11 @@ static int emulate_std(struct pt_regs *regs, int frreg, int flop) "4: stw %%r1,4(%%sr1,%2)\n" "5: stw %R1,8(%%sr1,%2)\n" "6: \n" - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 6b) - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(2b, 6b) - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(3b, 6b) - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(4b, 6b) - ASM_EXCEPTIONTABLE_ENTRY_EFAULT(5b, 6b) + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 6b, "%0") + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(2b, 6b, "%0") + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(3b, 6b, "%0") + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(4b, 6b, "%0") + ASM_EXCEPTIONTABLE_ENTRY_EFAULT(5b, 6b, "%0") : "+r" (ret) : "r" (val), "r" (regs->ior), "r" (regs->isr) : "r19", "r20", "r21", "r1" ); diff --git a/arch/parisc/kernel/unwind.c b/arch/parisc/kernel/unwind.c index 27ae40a443b8..f7e0fee5ee55 100644 --- a/arch/parisc/kernel/unwind.c +++ b/arch/parisc/kernel/unwind.c @@ -228,10 +228,8 @@ static int unwind_special(struct unwind_frame_info *info, unsigned long pc, int #ifdef CONFIG_IRQSTACKS extern void * const _call_on_stack; #endif /* CONFIG_IRQSTACKS */ - void *ptr; - ptr = dereference_kernel_function_descriptor(&handle_interruption); - if (pc_is_kernel_fn(pc, ptr)) { + if (pc_is_kernel_fn(pc, handle_interruption)) { struct pt_regs *regs = (struct pt_regs *)(info->sp - frame_size - PT_SZ_ALGN); dbg("Unwinding through handle_interruption()\n"); info->prev_sp = regs->gr[30]; @@ -239,13 +237,13 @@ static int unwind_special(struct unwind_frame_info *info, unsigned long pc, int return 1; } - if (pc_is_kernel_fn(pc, ret_from_kernel_thread) || - pc_is_kernel_fn(pc, syscall_exit)) { + if (pc == (unsigned long)&ret_from_kernel_thread || + pc == (unsigned long)&syscall_exit) { info->prev_sp = info->prev_ip = 0; return 1; } - if (pc_is_kernel_fn(pc, intr_return)) { + if (pc == (unsigned long)&intr_return) { struct pt_regs *regs; dbg("Found intr_return()\n"); @@ -257,14 +255,14 @@ static int unwind_special(struct unwind_frame_info *info, unsigned long pc, int } if (pc_is_kernel_fn(pc, _switch_to) || - pc_is_kernel_fn(pc, _switch_to_ret)) { + pc == (unsigned long)&_switch_to_ret) { info->prev_sp = info->sp - CALLEE_SAVE_FRAME_SIZE; info->prev_ip = *(unsigned long *)(info->prev_sp - RP_OFFSET); return 1; } #ifdef CONFIG_IRQSTACKS - if (pc_is_kernel_fn(pc, _call_on_stack)) { + if (pc == (unsigned long)&_call_on_stack) { info->prev_sp = *(unsigned long *)(info->sp - FRAME_SIZE - REG_SZ); info->prev_ip = *(unsigned long *)(info->sp - FRAME_SIZE - RP_OFFSET); return 1; diff --git a/arch/parisc/kernel/vmlinux.lds.S b/arch/parisc/kernel/vmlinux.lds.S index 548051b0b4af..b445e47903cf 100644 --- a/arch/parisc/kernel/vmlinux.lds.S +++ b/arch/parisc/kernel/vmlinux.lds.S @@ -127,7 +127,7 @@ SECTIONS } #endif - RO_DATA(8) + RO_DATA(PAGE_SIZE) /* unwind info */ . = ALIGN(4); diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c index 2fe5b44986e0..c39de84e98b0 100644 --- a/arch/parisc/mm/fault.c +++ b/arch/parisc/mm/fault.c @@ -150,11 +150,16 @@ int fixup_exception(struct pt_regs *regs) * Fix up get_user() and put_user(). * ASM_EXCEPTIONTABLE_ENTRY_EFAULT() sets the least-significant * bit in the relative address of the fixup routine to indicate - * that gr[ASM_EXCEPTIONTABLE_REG] should be loaded with - * -EFAULT to report a userspace access error. + * that the register encoded in the "or %r0,%r0,register" + * opcode should be loaded with -EFAULT to report a userspace + * access error. */ if (fix->fixup & 1) { - regs->gr[ASM_EXCEPTIONTABLE_REG] = -EFAULT; + int fault_error_reg = fix->err_opcode & 0x1f; + if (!WARN_ON(!fault_error_reg)) + regs->gr[fault_error_reg] = -EFAULT; + pr_debug("Unalignment fixup of register %d at %pS\n", + fault_error_reg, (void*)regs->iaoq[0]); /* zero target register for get_user() */ if (parisc_acctyp(0, regs->iir) == VM_READ) { diff --git a/arch/powerpc/include/asm/ftrace.h b/arch/powerpc/include/asm/ftrace.h index 1ebd2ca97f12..107fc5a48456 100644 --- a/arch/powerpc/include/asm/ftrace.h +++ b/arch/powerpc/include/asm/ftrace.h @@ -20,14 +20,6 @@ #ifndef __ASSEMBLY__ extern void _mcount(void); -static inline unsigned long ftrace_call_adjust(unsigned long addr) -{ - if (IS_ENABLED(CONFIG_ARCH_USING_PATCHABLE_FUNCTION_ENTRY)) - addr += MCOUNT_INSN_SIZE; - - return addr; -} - unsigned long prepare_ftrace_return(unsigned long parent, unsigned long ip, unsigned long sp); @@ -142,8 +134,10 @@ static inline u8 this_cpu_get_ftrace_enabled(void) { return 1; } #ifdef CONFIG_FUNCTION_TRACER extern unsigned int ftrace_tramp_text[], ftrace_tramp_init[]; void ftrace_free_init_tramp(void); +unsigned long ftrace_call_adjust(unsigned long addr); #else static inline void ftrace_free_init_tramp(void) { } +static inline unsigned long ftrace_call_adjust(unsigned long addr) { return addr; } #endif #endif /* !__ASSEMBLY__ */ diff --git a/arch/powerpc/include/asm/jump_label.h b/arch/powerpc/include/asm/jump_label.h index 93ce3ec25387..2f2a86ed2280 100644 --- a/arch/powerpc/include/asm/jump_label.h +++ b/arch/powerpc/include/asm/jump_label.h @@ -17,7 +17,7 @@ static __always_inline bool arch_static_branch(struct static_key *key, bool branch) { - asm_volatile_goto("1:\n\t" + asm goto("1:\n\t" "nop # arch_static_branch\n\t" ".pushsection __jump_table, \"aw\"\n\t" ".long 1b - ., %l[l_yes] - .\n\t" @@ -32,7 +32,7 @@ l_yes: static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch) { - asm_volatile_goto("1:\n\t" + asm goto("1:\n\t" "b %l[l_yes] # arch_static_branch_jump\n\t" ".pushsection __jump_table, \"aw\"\n\t" ".long 1b - ., %l[l_yes] - .\n\t" diff --git a/arch/powerpc/include/asm/papr-sysparm.h b/arch/powerpc/include/asm/papr-sysparm.h index 0dbbff59101d..c3cd5b131033 100644 --- a/arch/powerpc/include/asm/papr-sysparm.h +++ b/arch/powerpc/include/asm/papr-sysparm.h @@ -32,7 +32,7 @@ typedef struct { */ struct papr_sysparm_buf { __be16 len; - char val[PAPR_SYSPARM_MAX_OUTPUT]; + u8 val[PAPR_SYSPARM_MAX_OUTPUT]; }; struct papr_sysparm_buf *papr_sysparm_buf_alloc(void); diff --git a/arch/powerpc/include/asm/ppc-pci.h b/arch/powerpc/include/asm/ppc-pci.h index ce2b1b5eebdd..a8b7e8682f5b 100644 --- a/arch/powerpc/include/asm/ppc-pci.h +++ b/arch/powerpc/include/asm/ppc-pci.h @@ -30,6 +30,16 @@ void *pci_traverse_device_nodes(struct device_node *start, void *data); extern void pci_devs_phb_init_dynamic(struct pci_controller *phb); +#if defined(CONFIG_IOMMU_API) && (defined(CONFIG_PPC_PSERIES) || \ + defined(CONFIG_PPC_POWERNV)) +extern void ppc_iommu_register_device(struct pci_controller *phb); +extern void ppc_iommu_unregister_device(struct pci_controller *phb); +#else +static inline void ppc_iommu_register_device(struct pci_controller *phb) { } +static inline void ppc_iommu_unregister_device(struct pci_controller *phb) { } +#endif + + /* From rtas_pci.h */ extern void init_pci_config_tokens (void); extern unsigned long get_phb_buid (struct device_node *); diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index 7fd09f25452d..bb47af9054a9 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -617,6 +617,8 @@ #endif #define SPRN_HID2 0x3F8 /* Hardware Implementation Register 2 */ #define SPRN_HID2_GEKKO 0x398 /* Gekko HID2 Register */ +#define SPRN_HID2_G2_LE 0x3F3 /* G2_LE HID2 Register */ +#define HID2_G2_LE_HBE (1<<18) /* High BAT Enable (G2_LE) */ #define SPRN_IABR 0x3F2 /* Instruction Address Breakpoint Register */ #define SPRN_IABR2 0x3FA /* 83xx */ #define SPRN_IBCR 0x135 /* 83xx Insn Breakpoint Control Reg */ diff --git a/arch/powerpc/include/asm/rtas.h b/arch/powerpc/include/asm/rtas.h index 9bb2210c8d44..065ffd1b2f8a 100644 --- a/arch/powerpc/include/asm/rtas.h +++ b/arch/powerpc/include/asm/rtas.h @@ -69,7 +69,7 @@ enum rtas_function_index { RTAS_FNIDX__IBM_READ_SLOT_RESET_STATE, RTAS_FNIDX__IBM_READ_SLOT_RESET_STATE2, RTAS_FNIDX__IBM_REMOVE_PE_DMA_WINDOW, - RTAS_FNIDX__IBM_RESET_PE_DMA_WINDOWS, + RTAS_FNIDX__IBM_RESET_PE_DMA_WINDOW, RTAS_FNIDX__IBM_SCAN_LOG_DUMP, RTAS_FNIDX__IBM_SET_DYNAMIC_INDICATOR, RTAS_FNIDX__IBM_SET_EEH_OPTION, @@ -164,7 +164,7 @@ typedef struct { #define RTAS_FN_IBM_READ_SLOT_RESET_STATE rtas_fn_handle(RTAS_FNIDX__IBM_READ_SLOT_RESET_STATE) #define RTAS_FN_IBM_READ_SLOT_RESET_STATE2 rtas_fn_handle(RTAS_FNIDX__IBM_READ_SLOT_RESET_STATE2) #define RTAS_FN_IBM_REMOVE_PE_DMA_WINDOW rtas_fn_handle(RTAS_FNIDX__IBM_REMOVE_PE_DMA_WINDOW) -#define RTAS_FN_IBM_RESET_PE_DMA_WINDOWS rtas_fn_handle(RTAS_FNIDX__IBM_RESET_PE_DMA_WINDOWS) +#define RTAS_FN_IBM_RESET_PE_DMA_WINDOW rtas_fn_handle(RTAS_FNIDX__IBM_RESET_PE_DMA_WINDOW) #define RTAS_FN_IBM_SCAN_LOG_DUMP rtas_fn_handle(RTAS_FNIDX__IBM_SCAN_LOG_DUMP) #define RTAS_FN_IBM_SET_DYNAMIC_INDICATOR rtas_fn_handle(RTAS_FNIDX__IBM_SET_DYNAMIC_INDICATOR) #define RTAS_FN_IBM_SET_EEH_OPTION rtas_fn_handle(RTAS_FNIDX__IBM_SET_EEH_OPTION) diff --git a/arch/powerpc/include/asm/sections.h b/arch/powerpc/include/asm/sections.h index ea26665f82cf..f43f3a6b0051 100644 --- a/arch/powerpc/include/asm/sections.h +++ b/arch/powerpc/include/asm/sections.h @@ -14,6 +14,7 @@ typedef struct func_desc func_desc_t; extern char __head_end[]; extern char __srwx_boundary[]; +extern char __exittext_begin[], __exittext_end[]; /* Patch sites */ extern s32 patch__call_flush_branch_caches1; diff --git a/arch/powerpc/include/asm/thread_info.h b/arch/powerpc/include/asm/thread_info.h index bf5dde1a4114..15c5691dd218 100644 --- a/arch/powerpc/include/asm/thread_info.h +++ b/arch/powerpc/include/asm/thread_info.h @@ -14,7 +14,7 @@ #ifdef __KERNEL__ -#ifdef CONFIG_KASAN +#if defined(CONFIG_KASAN) && CONFIG_THREAD_SHIFT < 15 #define MIN_THREAD_SHIFT (CONFIG_THREAD_SHIFT + 1) #else #define MIN_THREAD_SHIFT CONFIG_THREAD_SHIFT diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h index f1f9890f50d3..de10437fd206 100644 --- a/arch/powerpc/include/asm/uaccess.h +++ b/arch/powerpc/include/asm/uaccess.h @@ -74,7 +74,7 @@ __pu_failed: \ /* -mprefixed can generate offsets beyond range, fall back hack */ #ifdef CONFIG_PPC_KERNEL_PREFIXED #define __put_user_asm_goto(x, addr, label, op) \ - asm_volatile_goto( \ + asm goto( \ "1: " op " %0,0(%1) # put_user\n" \ EX_TABLE(1b, %l2) \ : \ @@ -83,7 +83,7 @@ __pu_failed: \ : label) #else #define __put_user_asm_goto(x, addr, label, op) \ - asm_volatile_goto( \ + asm goto( \ "1: " op "%U1%X1 %0,%1 # put_user\n" \ EX_TABLE(1b, %l2) \ : \ @@ -97,7 +97,7 @@ __pu_failed: \ __put_user_asm_goto(x, ptr, label, "std") #else /* __powerpc64__ */ #define __put_user_asm2_goto(x, addr, label) \ - asm_volatile_goto( \ + asm goto( \ "1: stw%X1 %0, %1\n" \ "2: stw%X1 %L0, %L1\n" \ EX_TABLE(1b, %l2) \ @@ -146,7 +146,7 @@ do { \ /* -mprefixed can generate offsets beyond range, fall back hack */ #ifdef CONFIG_PPC_KERNEL_PREFIXED #define __get_user_asm_goto(x, addr, label, op) \ - asm_volatile_goto( \ + asm_goto_output( \ "1: "op" %0,0(%1) # get_user\n" \ EX_TABLE(1b, %l2) \ : "=r" (x) \ @@ -155,7 +155,7 @@ do { \ : label) #else #define __get_user_asm_goto(x, addr, label, op) \ - asm_volatile_goto( \ + asm_goto_output( \ "1: "op"%U1%X1 %0, %1 # get_user\n" \ EX_TABLE(1b, %l2) \ : "=r" (x) \ @@ -169,7 +169,7 @@ do { \ __get_user_asm_goto(x, addr, label, "ld") #else /* __powerpc64__ */ #define __get_user_asm2_goto(x, addr, label) \ - asm_volatile_goto( \ + asm_goto_output( \ "1: lwz%X1 %0, %1\n" \ "2: lwz%X1 %L0, %L1\n" \ EX_TABLE(1b, %l2) \ diff --git a/arch/powerpc/include/uapi/asm/papr-sysparm.h b/arch/powerpc/include/uapi/asm/papr-sysparm.h index 9f9a0f267ea5..f733467b1534 100644 --- a/arch/powerpc/include/uapi/asm/papr-sysparm.h +++ b/arch/powerpc/include/uapi/asm/papr-sysparm.h @@ -14,7 +14,7 @@ enum { struct papr_sysparm_io_block { __u32 parameter; __u16 length; - char data[PAPR_SYSPARM_MAX_OUTPUT]; + __u8 data[PAPR_SYSPARM_MAX_OUTPUT]; }; /** diff --git a/arch/powerpc/kernel/cpu_setup_6xx.S b/arch/powerpc/kernel/cpu_setup_6xx.S index f29ce3dd6140..bfd3f442e5eb 100644 --- a/arch/powerpc/kernel/cpu_setup_6xx.S +++ b/arch/powerpc/kernel/cpu_setup_6xx.S @@ -26,6 +26,15 @@ BEGIN_FTR_SECTION bl __init_fpu_registers END_FTR_SECTION_IFCLR(CPU_FTR_FPU_UNAVAILABLE) bl setup_common_caches + + /* + * This assumes that all cores using __setup_cpu_603 with + * MMU_FTR_USE_HIGH_BATS are G2_LE compatible + */ +BEGIN_MMU_FTR_SECTION + bl setup_g2_le_hid2 +END_MMU_FTR_SECTION_IFSET(MMU_FTR_USE_HIGH_BATS) + mtlr r5 blr _GLOBAL(__setup_cpu_604) @@ -115,6 +124,16 @@ SYM_FUNC_START_LOCAL(setup_604_hid0) blr SYM_FUNC_END(setup_604_hid0) +/* Enable high BATs for G2_LE and derivatives like e300cX */ +SYM_FUNC_START_LOCAL(setup_g2_le_hid2) + mfspr r11,SPRN_HID2_G2_LE + oris r11,r11,HID2_G2_LE_HBE@h + mtspr SPRN_HID2_G2_LE,r11 + sync + isync + blr +SYM_FUNC_END(setup_g2_le_hid2) + /* 7400 <= rev 2.7 and 7410 rev = 1.0 suffer from some * erratas we work around here. * Moto MPC710CE.pdf describes them, those are errata @@ -495,4 +514,3 @@ _GLOBAL(__restore_cpu_setup) mtcr r7 blr _ASM_NOKPROBE_SYMBOL(__restore_cpu_setup) - diff --git a/arch/powerpc/kernel/cpu_specs_e500mc.h b/arch/powerpc/kernel/cpu_specs_e500mc.h index ceb06b109f83..2ae8e9a7b461 100644 --- a/arch/powerpc/kernel/cpu_specs_e500mc.h +++ b/arch/powerpc/kernel/cpu_specs_e500mc.h @@ -8,7 +8,8 @@ #ifdef CONFIG_PPC64 #define COMMON_USER_BOOKE (PPC_FEATURE_32 | PPC_FEATURE_HAS_MMU | \ - PPC_FEATURE_HAS_FPU | PPC_FEATURE_64) + PPC_FEATURE_HAS_FPU | PPC_FEATURE_64 | \ + PPC_FEATURE_BOOKE) #else #define COMMON_USER_BOOKE (PPC_FEATURE_32 | PPC_FEATURE_HAS_MMU | \ PPC_FEATURE_BOOKE) diff --git a/arch/powerpc/kernel/interrupt_64.S b/arch/powerpc/kernel/interrupt_64.S index bd863702d812..1ad059a9e2fe 100644 --- a/arch/powerpc/kernel/interrupt_64.S +++ b/arch/powerpc/kernel/interrupt_64.S @@ -52,7 +52,8 @@ _ASM_NOKPROBE_SYMBOL(system_call_vectored_\name) mr r10,r1 ld r1,PACAKSAVE(r13) std r10,0(r1) - std r11,_NIP(r1) + std r11,_LINK(r1) + std r11,_NIP(r1) /* Saved LR is also the next instruction */ std r12,_MSR(r1) std r0,GPR0(r1) std r10,GPR1(r1) @@ -70,7 +71,6 @@ _ASM_NOKPROBE_SYMBOL(system_call_vectored_\name) std r9,GPR13(r1) SAVE_NVGPRS(r1) std r11,_XER(r1) - std r11,_LINK(r1) std r11,_CTR(r1) li r11,\trapnr diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c index ebe259bdd462..1185efebf032 100644 --- a/arch/powerpc/kernel/iommu.c +++ b/arch/powerpc/kernel/iommu.c @@ -1287,20 +1287,22 @@ spapr_tce_platform_iommu_attach_dev(struct iommu_domain *platform_domain, struct iommu_domain *domain = iommu_get_domain_for_dev(dev); struct iommu_group *grp = iommu_group_get(dev); struct iommu_table_group *table_group; - int ret = -EINVAL; /* At first attach the ownership is already set */ - if (!domain) + if (!domain) { + iommu_group_put(grp); return 0; - - if (!grp) - return -ENODEV; + } table_group = iommu_group_get_iommudata(grp); - ret = table_group->ops->take_ownership(table_group); + /* + * The domain being set to PLATFORM from earlier + * BLOCKED. The table_group ownership has to be released. + */ + table_group->ops->release_ownership(table_group); iommu_group_put(grp); - return ret; + return 0; } static const struct iommu_domain_ops spapr_tce_platform_domain_ops = { @@ -1312,13 +1314,32 @@ static struct iommu_domain spapr_tce_platform_domain = { .ops = &spapr_tce_platform_domain_ops, }; -static struct iommu_domain spapr_tce_blocked_domain = { - .type = IOMMU_DOMAIN_BLOCKED, +static int +spapr_tce_blocked_iommu_attach_dev(struct iommu_domain *platform_domain, + struct device *dev) +{ + struct iommu_group *grp = iommu_group_get(dev); + struct iommu_table_group *table_group; + int ret = -EINVAL; + /* * FIXME: SPAPR mixes blocked and platform behaviors, the blocked domain * also sets the dma_api ops */ - .ops = &spapr_tce_platform_domain_ops, + table_group = iommu_group_get_iommudata(grp); + ret = table_group->ops->take_ownership(table_group); + iommu_group_put(grp); + + return ret; +} + +static const struct iommu_domain_ops spapr_tce_blocked_domain_ops = { + .attach_dev = spapr_tce_blocked_iommu_attach_dev, +}; + +static struct iommu_domain spapr_tce_blocked_domain = { + .type = IOMMU_DOMAIN_BLOCKED, + .ops = &spapr_tce_blocked_domain_ops, }; static bool spapr_tce_iommu_capable(struct device *dev, enum iommu_cap cap) @@ -1339,7 +1360,7 @@ static struct iommu_device *spapr_tce_iommu_probe_device(struct device *dev) struct pci_controller *hose; if (!dev_is_pci(dev)) - return ERR_PTR(-EPERM); + return ERR_PTR(-ENODEV); pdev = to_pci_dev(dev); hose = pdev->bus->sysdata; @@ -1388,6 +1409,21 @@ static const struct attribute_group *spapr_tce_iommu_groups[] = { NULL, }; +void ppc_iommu_register_device(struct pci_controller *phb) +{ + iommu_device_sysfs_add(&phb->iommu, phb->parent, + spapr_tce_iommu_groups, "iommu-phb%04x", + phb->global_number); + iommu_device_register(&phb->iommu, &spapr_tce_iommu_ops, + phb->parent); +} + +void ppc_iommu_unregister_device(struct pci_controller *phb) +{ + iommu_device_unregister(&phb->iommu); + iommu_device_sysfs_remove(&phb->iommu); +} + /* * This registers IOMMU devices of PHBs. This needs to happen * after core_initcall(iommu_init) + postcore_initcall(pci_driver_init) and @@ -1398,11 +1434,7 @@ static int __init spapr_tce_setup_phb_iommus_initcall(void) struct pci_controller *hose; list_for_each_entry(hose, &hose_list, list_node) { - iommu_device_sysfs_add(&hose->iommu, hose->parent, - spapr_tce_iommu_groups, "iommu-phb%04x", - hose->global_number); - iommu_device_register(&hose->iommu, &spapr_tce_iommu_ops, - hose->parent); + ppc_iommu_register_device(hose); } return 0; } diff --git a/arch/powerpc/kernel/irq_64.c b/arch/powerpc/kernel/irq_64.c index 938e66829eae..d5c48d1b0a31 100644 --- a/arch/powerpc/kernel/irq_64.c +++ b/arch/powerpc/kernel/irq_64.c @@ -230,7 +230,7 @@ again: * This allows interrupts to be unmasked without hard disabling, and * also without new hard interrupts coming in ahead of pending ones. */ - asm_volatile_goto( + asm goto( "1: \n" " lbz 9,%0(13) \n" " cmpwi 9,0 \n" diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c index 7e793b503e29..8064d9c3de86 100644 --- a/arch/powerpc/kernel/rtas.c +++ b/arch/powerpc/kernel/rtas.c @@ -375,8 +375,13 @@ static struct rtas_function rtas_function_table[] __ro_after_init = { [RTAS_FNIDX__IBM_REMOVE_PE_DMA_WINDOW] = { .name = "ibm,remove-pe-dma-window", }, - [RTAS_FNIDX__IBM_RESET_PE_DMA_WINDOWS] = { - .name = "ibm,reset-pe-dma-windows", + [RTAS_FNIDX__IBM_RESET_PE_DMA_WINDOW] = { + /* + * Note: PAPR+ v2.13 7.3.31.4.1 spells this as + * "ibm,reset-pe-dma-windows" (plural), but RTAS + * implementations use the singular form in practice. + */ + .name = "ibm,reset-pe-dma-window", }, [RTAS_FNIDX__IBM_SCAN_LOG_DUMP] = { .name = "ibm,scan-log-dump", diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index 693334c20d07..a60e4139214b 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -984,7 +984,7 @@ static bool shared_caches __ro_after_init; /* cpumask of CPUs with asymmetric SMT dependency */ static int powerpc_smt_flags(void) { - int flags = SD_SHARE_CPUCAPACITY | SD_SHARE_PKG_RESOURCES; + int flags = SD_SHARE_CPUCAPACITY | SD_SHARE_LLC; if (cpu_has_feature(CPU_FTR_ASYM_SMT)) { printk_once(KERN_INFO "Enabling Asymmetric SMT scheduling\n"); @@ -1010,9 +1010,9 @@ static __ro_after_init DEFINE_STATIC_KEY_FALSE(splpar_asym_pack); static int powerpc_shared_cache_flags(void) { if (static_branch_unlikely(&splpar_asym_pack)) - return SD_SHARE_PKG_RESOURCES | SD_ASYM_PACKING; + return SD_SHARE_LLC | SD_ASYM_PACKING; - return SD_SHARE_PKG_RESOURCES; + return SD_SHARE_LLC; } static int powerpc_shared_proc_flags(void) diff --git a/arch/powerpc/kernel/trace/ftrace.c b/arch/powerpc/kernel/trace/ftrace.c index 82010629cf88..d8d6b4fd9a14 100644 --- a/arch/powerpc/kernel/trace/ftrace.c +++ b/arch/powerpc/kernel/trace/ftrace.c @@ -27,10 +27,22 @@ #include <asm/ftrace.h> #include <asm/syscall.h> #include <asm/inst.h> +#include <asm/sections.h> #define NUM_FTRACE_TRAMPS 2 static unsigned long ftrace_tramps[NUM_FTRACE_TRAMPS]; +unsigned long ftrace_call_adjust(unsigned long addr) +{ + if (addr >= (unsigned long)__exittext_begin && addr < (unsigned long)__exittext_end) + return 0; + + if (IS_ENABLED(CONFIG_ARCH_USING_PATCHABLE_FUNCTION_ENTRY)) + addr += MCOUNT_INSN_SIZE; + + return addr; +} + static ppc_inst_t ftrace_create_branch_inst(unsigned long ip, unsigned long addr, int link) { ppc_inst_t op; diff --git a/arch/powerpc/kernel/trace/ftrace_64_pg.c b/arch/powerpc/kernel/trace/ftrace_64_pg.c index 7b85c3b460a3..12fab1803bcf 100644 --- a/arch/powerpc/kernel/trace/ftrace_64_pg.c +++ b/arch/powerpc/kernel/trace/ftrace_64_pg.c @@ -37,6 +37,11 @@ #define NUM_FTRACE_TRAMPS 8 static unsigned long ftrace_tramps[NUM_FTRACE_TRAMPS]; +unsigned long ftrace_call_adjust(unsigned long addr) +{ + return addr; +} + static ppc_inst_t ftrace_call_replace(unsigned long ip, unsigned long addr, int link) { diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S index 1c5970df3233..f420df7888a7 100644 --- a/arch/powerpc/kernel/vmlinux.lds.S +++ b/arch/powerpc/kernel/vmlinux.lds.S @@ -281,7 +281,9 @@ SECTIONS * to deal with references from __bug_table */ .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { + __exittext_begin = .; EXIT_TEXT + __exittext_end = .; } . = ALIGN(PAGE_SIZE); diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index 52427fc2a33f..0b921704da45 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -391,6 +391,24 @@ static void kvmppc_set_pvr_hv(struct kvm_vcpu *vcpu, u32 pvr) /* Dummy value used in computing PCR value below */ #define PCR_ARCH_31 (PCR_ARCH_300 << 1) +static inline unsigned long map_pcr_to_cap(unsigned long pcr) +{ + unsigned long cap = 0; + + switch (pcr) { + case PCR_ARCH_300: + cap = H_GUEST_CAP_POWER9; + break; + case PCR_ARCH_31: + cap = H_GUEST_CAP_POWER10; + break; + default: + break; + } + + return cap; +} + static int kvmppc_set_arch_compat(struct kvm_vcpu *vcpu, u32 arch_compat) { unsigned long host_pcr_bit = 0, guest_pcr_bit = 0, cap = 0; @@ -424,11 +442,9 @@ static int kvmppc_set_arch_compat(struct kvm_vcpu *vcpu, u32 arch_compat) break; case PVR_ARCH_300: guest_pcr_bit = PCR_ARCH_300; - cap = H_GUEST_CAP_POWER9; break; case PVR_ARCH_31: guest_pcr_bit = PCR_ARCH_31; - cap = H_GUEST_CAP_POWER10; break; default: return -EINVAL; @@ -440,6 +456,12 @@ static int kvmppc_set_arch_compat(struct kvm_vcpu *vcpu, u32 arch_compat) return -EINVAL; if (kvmhv_on_pseries() && kvmhv_is_nestedv2()) { + /* + * 'arch_compat == 0' would mean the guest should default to + * L1's compatibility. In this case, the guest would pick + * host's PCR and evaluate the corresponding capabilities. + */ + cap = map_pcr_to_cap(guest_pcr_bit); if (!(cap & nested_capabilities)) return -EINVAL; } diff --git a/arch/powerpc/kvm/book3s_hv_nestedv2.c b/arch/powerpc/kvm/book3s_hv_nestedv2.c index 5378eb40b162..8e6f5355f08b 100644 --- a/arch/powerpc/kvm/book3s_hv_nestedv2.c +++ b/arch/powerpc/kvm/book3s_hv_nestedv2.c @@ -138,6 +138,7 @@ static int gs_msg_ops_vcpu_fill_info(struct kvmppc_gs_buff *gsb, vector128 v; int rc, i; u16 iden; + u32 arch_compat = 0; vcpu = gsm->data; @@ -347,8 +348,23 @@ static int gs_msg_ops_vcpu_fill_info(struct kvmppc_gs_buff *gsb, break; } case KVMPPC_GSID_LOGICAL_PVR: - rc = kvmppc_gse_put_u32(gsb, iden, - vcpu->arch.vcore->arch_compat); + /* + * Though 'arch_compat == 0' would mean the default + * compatibility, arch_compat, being a Guest Wide + * Element, cannot be filled with a value of 0 in GSB + * as this would result into a kernel trap. + * Hence, when `arch_compat == 0`, arch_compat should + * default to L1's PVR. + */ + if (!vcpu->arch.vcore->arch_compat) { + if (cpu_has_feature(CPU_FTR_ARCH_31)) + arch_compat = PVR_ARCH_31; + else if (cpu_has_feature(CPU_FTR_ARCH_300)) + arch_compat = PVR_ARCH_300; + } else { + arch_compat = vcpu->arch.vcore->arch_compat; + } + rc = kvmppc_gse_put_u32(gsb, iden, arch_compat); break; } diff --git a/arch/powerpc/mm/kasan/init_32.c b/arch/powerpc/mm/kasan/init_32.c index a70828a6d935..aa9aa11927b2 100644 --- a/arch/powerpc/mm/kasan/init_32.c +++ b/arch/powerpc/mm/kasan/init_32.c @@ -64,6 +64,7 @@ int __init __weak kasan_init_region(void *start, size_t size) if (ret) return ret; + k_start = k_start & PAGE_MASK; block = memblock_alloc(k_end - k_start, PAGE_SIZE); if (!block) return -ENOMEM; diff --git a/arch/powerpc/platforms/85xx/mpc8536_ds.c b/arch/powerpc/platforms/85xx/mpc8536_ds.c index e966b2ad8ecd..b3327a358eb4 100644 --- a/arch/powerpc/platforms/85xx/mpc8536_ds.c +++ b/arch/powerpc/platforms/85xx/mpc8536_ds.c @@ -27,7 +27,7 @@ #include "mpc85xx.h" -void __init mpc8536_ds_pic_init(void) +static void __init mpc8536_ds_pic_init(void) { struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN, 0, 256, " OpenPIC "); diff --git a/arch/powerpc/platforms/85xx/mvme2500.c b/arch/powerpc/platforms/85xx/mvme2500.c index 1b59e45a0c64..19122daadb55 100644 --- a/arch/powerpc/platforms/85xx/mvme2500.c +++ b/arch/powerpc/platforms/85xx/mvme2500.c @@ -21,7 +21,7 @@ #include "mpc85xx.h" -void __init mvme2500_pic_init(void) +static void __init mvme2500_pic_init(void) { struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN | MPIC_SINGLE_DEST_CPU, diff --git a/arch/powerpc/platforms/85xx/p1010rdb.c b/arch/powerpc/platforms/85xx/p1010rdb.c index 10d6f1fa3327..491895ac8bcf 100644 --- a/arch/powerpc/platforms/85xx/p1010rdb.c +++ b/arch/powerpc/platforms/85xx/p1010rdb.c @@ -24,7 +24,7 @@ #include "mpc85xx.h" -void __init p1010_rdb_pic_init(void) +static void __init p1010_rdb_pic_init(void) { struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN | MPIC_SINGLE_DEST_CPU, diff --git a/arch/powerpc/platforms/85xx/p1022_ds.c b/arch/powerpc/platforms/85xx/p1022_ds.c index 0dd786a061a6..adc3a2ee1415 100644 --- a/arch/powerpc/platforms/85xx/p1022_ds.c +++ b/arch/powerpc/platforms/85xx/p1022_ds.c @@ -370,7 +370,7 @@ exit: * * @pixclock: the wavelength, in picoseconds, of the clock */ -void p1022ds_set_pixel_clock(unsigned int pixclock) +static void p1022ds_set_pixel_clock(unsigned int pixclock) { struct device_node *guts_np = NULL; struct ccsr_guts __iomem *guts; @@ -418,7 +418,7 @@ void p1022ds_set_pixel_clock(unsigned int pixclock) /** * p1022ds_valid_monitor_port: set the monitor port for sysfs */ -enum fsl_diu_monitor_port +static enum fsl_diu_monitor_port p1022ds_valid_monitor_port(enum fsl_diu_monitor_port port) { switch (port) { @@ -432,7 +432,7 @@ p1022ds_valid_monitor_port(enum fsl_diu_monitor_port port) #endif -void __init p1022_ds_pic_init(void) +static void __init p1022_ds_pic_init(void) { struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN | MPIC_SINGLE_DEST_CPU, diff --git a/arch/powerpc/platforms/85xx/p1022_rdk.c b/arch/powerpc/platforms/85xx/p1022_rdk.c index 25ab6e9c1470..6198299d95b1 100644 --- a/arch/powerpc/platforms/85xx/p1022_rdk.c +++ b/arch/powerpc/platforms/85xx/p1022_rdk.c @@ -40,7 +40,7 @@ * * @pixclock: the wavelength, in picoseconds, of the clock */ -void p1022rdk_set_pixel_clock(unsigned int pixclock) +static void p1022rdk_set_pixel_clock(unsigned int pixclock) { struct device_node *guts_np = NULL; struct ccsr_guts __iomem *guts; @@ -88,7 +88,7 @@ void p1022rdk_set_pixel_clock(unsigned int pixclock) /** * p1022rdk_valid_monitor_port: set the monitor port for sysfs */ -enum fsl_diu_monitor_port +static enum fsl_diu_monitor_port p1022rdk_valid_monitor_port(enum fsl_diu_monitor_port port) { return FSL_DIU_PORT_DVI; @@ -96,7 +96,7 @@ p1022rdk_valid_monitor_port(enum fsl_diu_monitor_port port) #endif -void __init p1022_rdk_pic_init(void) +static void __init p1022_rdk_pic_init(void) { struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN | MPIC_SINGLE_DEST_CPU, diff --git a/arch/powerpc/platforms/85xx/socrates_fpga_pic.c b/arch/powerpc/platforms/85xx/socrates_fpga_pic.c index baa12eff6d5d..60e0b8947ce6 100644 --- a/arch/powerpc/platforms/85xx/socrates_fpga_pic.c +++ b/arch/powerpc/platforms/85xx/socrates_fpga_pic.c @@ -8,6 +8,8 @@ #include <linux/of_irq.h> #include <linux/io.h> +#include "socrates_fpga_pic.h" + /* * The FPGA supports 9 interrupt sources, which can be routed to 3 * interrupt request lines of the MPIC. The line to be used can be diff --git a/arch/powerpc/platforms/85xx/xes_mpc85xx.c b/arch/powerpc/platforms/85xx/xes_mpc85xx.c index 45f257fc1ade..2582427d8d01 100644 --- a/arch/powerpc/platforms/85xx/xes_mpc85xx.c +++ b/arch/powerpc/platforms/85xx/xes_mpc85xx.c @@ -37,7 +37,7 @@ #define MPC85xx_L2CTL_L2I 0x40000000 /* L2 flash invalidate */ #define MPC85xx_L2CTL_L2SIZ_MASK 0x30000000 /* L2 SRAM size (R/O) */ -void __init xes_mpc85xx_pic_init(void) +static void __init xes_mpc85xx_pic_init(void) { struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN, 0, 256, " OpenPIC "); diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c index 496e16c588aa..e8c4129697b1 100644 --- a/arch/powerpc/platforms/pseries/iommu.c +++ b/arch/powerpc/platforms/pseries/iommu.c @@ -574,29 +574,6 @@ static void iommu_table_setparms(struct pci_controller *phb, struct iommu_table_ops iommu_table_lpar_multi_ops; -/* - * iommu_table_setparms_lpar - * - * Function: On pSeries LPAR systems, return TCE table info, given a pci bus. - */ -static void iommu_table_setparms_lpar(struct pci_controller *phb, - struct device_node *dn, - struct iommu_table *tbl, - struct iommu_table_group *table_group, - const __be32 *dma_window) -{ - unsigned long offset, size, liobn; - - of_parse_dma_window(dn, dma_window, &liobn, &offset, &size); - - iommu_table_setparms_common(tbl, phb->bus->number, liobn, offset, size, IOMMU_PAGE_SHIFT_4K, NULL, - &iommu_table_lpar_multi_ops); - - - table_group->tce32_start = offset; - table_group->tce32_size = size; -} - struct iommu_table_ops iommu_table_pseries_ops = { .set = tce_build_pSeries, .clear = tce_free_pSeries, @@ -724,26 +701,71 @@ struct iommu_table_ops iommu_table_lpar_multi_ops = { * dynamic 64bit DMA window, walking up the device tree. */ static struct device_node *pci_dma_find(struct device_node *dn, - const __be32 **dma_window) + struct dynamic_dma_window_prop *prop) { - const __be32 *dw = NULL; + const __be32 *default_prop = NULL; + const __be32 *ddw_prop = NULL; + struct device_node *rdn = NULL; + bool default_win = false, ddw_win = false; for ( ; dn && PCI_DN(dn); dn = dn->parent) { - dw = of_get_property(dn, "ibm,dma-window", NULL); - if (dw) { - if (dma_window) - *dma_window = dw; - return dn; + default_prop = of_get_property(dn, "ibm,dma-window", NULL); + if (default_prop) { + rdn = dn; + default_win = true; + } + ddw_prop = of_get_property(dn, DIRECT64_PROPNAME, NULL); + if (ddw_prop) { + rdn = dn; + ddw_win = true; + break; + } + ddw_prop = of_get_property(dn, DMA64_PROPNAME, NULL); + if (ddw_prop) { + rdn = dn; + ddw_win = true; + break; } - dw = of_get_property(dn, DIRECT64_PROPNAME, NULL); - if (dw) - return dn; - dw = of_get_property(dn, DMA64_PROPNAME, NULL); - if (dw) - return dn; + + /* At least found default window, which is the case for normal boot */ + if (default_win) + break; } - return NULL; + /* For PCI devices there will always be a DMA window, either on the device + * or parent bus + */ + WARN_ON(!(default_win | ddw_win)); + + /* caller doesn't want to get DMA window property */ + if (!prop) + return rdn; + + /* parse DMA window property. During normal system boot, only default + * DMA window is passed in OF. But, for kdump, a dedicated adapter might + * have both default and DDW in FDT. In this scenario, DDW takes precedence + * over default window. + */ + if (ddw_win) { + struct dynamic_dma_window_prop *p; + + p = (struct dynamic_dma_window_prop *)ddw_prop; + prop->liobn = p->liobn; + prop->dma_base = p->dma_base; + prop->tce_shift = p->tce_shift; + prop->window_shift = p->window_shift; + } else if (default_win) { + unsigned long offset, size, liobn; + + of_parse_dma_window(rdn, default_prop, &liobn, &offset, &size); + + prop->liobn = cpu_to_be32((u32)liobn); + prop->dma_base = cpu_to_be64(offset); + prop->tce_shift = cpu_to_be32(IOMMU_PAGE_SHIFT_4K); + prop->window_shift = cpu_to_be32(order_base_2(size)); + } + + return rdn; } static void pci_dma_bus_setup_pSeriesLP(struct pci_bus *bus) @@ -751,17 +773,20 @@ static void pci_dma_bus_setup_pSeriesLP(struct pci_bus *bus) struct iommu_table *tbl; struct device_node *dn, *pdn; struct pci_dn *ppci; - const __be32 *dma_window = NULL; + struct dynamic_dma_window_prop prop; dn = pci_bus_to_OF_node(bus); pr_debug("pci_dma_bus_setup_pSeriesLP: setting up bus %pOF\n", dn); - pdn = pci_dma_find(dn, &dma_window); + pdn = pci_dma_find(dn, &prop); - if (dma_window == NULL) - pr_debug(" no ibm,dma-window property !\n"); + /* In PPC architecture, there will always be DMA window on bus or one of the + * parent bus. During reboot, there will be ibm,dma-window property to + * define DMA window. For kdump, there will at least be default window or DDW + * or both. + */ ppci = PCI_DN(pdn); @@ -771,13 +796,24 @@ static void pci_dma_bus_setup_pSeriesLP(struct pci_bus *bus) if (!ppci->table_group) { ppci->table_group = iommu_pseries_alloc_group(ppci->phb->node); tbl = ppci->table_group->tables[0]; - if (dma_window) { - iommu_table_setparms_lpar(ppci->phb, pdn, tbl, - ppci->table_group, dma_window); - if (!iommu_init_table(tbl, ppci->phb->node, 0, 0)) - panic("Failed to initialize iommu table"); - } + iommu_table_setparms_common(tbl, ppci->phb->bus->number, + be32_to_cpu(prop.liobn), + be64_to_cpu(prop.dma_base), + 1ULL << be32_to_cpu(prop.window_shift), + be32_to_cpu(prop.tce_shift), NULL, + &iommu_table_lpar_multi_ops); + + /* Only for normal boot with default window. Doesn't matter even + * if we set these with DDW which is 64bit during kdump, since + * these will not be used during kdump. + */ + ppci->table_group->tce32_start = be64_to_cpu(prop.dma_base); + ppci->table_group->tce32_size = 1 << be32_to_cpu(prop.window_shift); + + if (!iommu_init_table(tbl, ppci->phb->node, 0, 0)) + panic("Failed to initialize iommu table"); + iommu_register_group(ppci->table_group, pci_domain_nr(bus), 0); pr_debug(" created table: %p\n", ppci->table_group); @@ -968,6 +1004,12 @@ static void find_existing_ddw_windows_named(const char *name) continue; } + /* If at the time of system initialization, there are DDWs in OF, + * it means this is during kexec. DDW could be direct or dynamic. + * We will just mark DDWs as "dynamic" since this is kdump path, + * no need to worry about perforance. ddw_list_new_entry() will + * set window->direct = false. + */ window = ddw_list_new_entry(pdn, dma64); if (!window) { of_node_put(pdn); @@ -1524,8 +1566,8 @@ static void pci_dma_dev_setup_pSeriesLP(struct pci_dev *dev) { struct device_node *pdn, *dn; struct iommu_table *tbl; - const __be32 *dma_window = NULL; struct pci_dn *pci; + struct dynamic_dma_window_prop prop; pr_debug("pci_dma_dev_setup_pSeriesLP: %s\n", pci_name(dev)); @@ -1538,7 +1580,7 @@ static void pci_dma_dev_setup_pSeriesLP(struct pci_dev *dev) dn = pci_device_to_OF_node(dev); pr_debug(" node is %pOF\n", dn); - pdn = pci_dma_find(dn, &dma_window); + pdn = pci_dma_find(dn, &prop); if (!pdn || !PCI_DN(pdn)) { printk(KERN_WARNING "pci_dma_dev_setup_pSeriesLP: " "no DMA window found for pci dev=%s dn=%pOF\n", @@ -1551,8 +1593,20 @@ static void pci_dma_dev_setup_pSeriesLP(struct pci_dev *dev) if (!pci->table_group) { pci->table_group = iommu_pseries_alloc_group(pci->phb->node); tbl = pci->table_group->tables[0]; - iommu_table_setparms_lpar(pci->phb, pdn, tbl, - pci->table_group, dma_window); + + iommu_table_setparms_common(tbl, pci->phb->bus->number, + be32_to_cpu(prop.liobn), + be64_to_cpu(prop.dma_base), + 1ULL << be32_to_cpu(prop.window_shift), + be32_to_cpu(prop.tce_shift), NULL, + &iommu_table_lpar_multi_ops); + + /* Only for normal boot with default window. Doesn't matter even + * if we set these with DDW which is 64bit during kdump, since + * these will not be used during kdump. + */ + pci->table_group->tce32_start = be64_to_cpu(prop.dma_base); + pci->table_group->tce32_size = 1 << be32_to_cpu(prop.window_shift); iommu_init_table(tbl, pci->phb->node, 0, 0); iommu_register_group(pci->table_group, diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c index 4561667832ed..4e9916bb03d7 100644 --- a/arch/powerpc/platforms/pseries/lpar.c +++ b/arch/powerpc/platforms/pseries/lpar.c @@ -662,8 +662,12 @@ u64 pseries_paravirt_steal_clock(int cpu) { struct lppaca *lppaca = &lppaca_of(cpu); - return be64_to_cpu(READ_ONCE(lppaca->enqueue_dispatch_tb)) + - be64_to_cpu(READ_ONCE(lppaca->ready_enqueue_tb)); + /* + * VPA steal time counters are reported at TB frequency. Hence do a + * conversion to ns before returning + */ + return tb_to_ns(be64_to_cpu(READ_ONCE(lppaca->enqueue_dispatch_tb)) + + be64_to_cpu(READ_ONCE(lppaca->ready_enqueue_tb))); } #endif diff --git a/arch/powerpc/platforms/pseries/pci_dlpar.c b/arch/powerpc/platforms/pseries/pci_dlpar.c index 4ba824568119..4448386268d9 100644 --- a/arch/powerpc/platforms/pseries/pci_dlpar.c +++ b/arch/powerpc/platforms/pseries/pci_dlpar.c @@ -35,6 +35,8 @@ struct pci_controller *init_phb_dynamic(struct device_node *dn) pseries_msi_allocate_domains(phb); + ppc_iommu_register_device(phb); + /* Create EEH devices for the PHB */ eeh_phb_pe_create(phb); @@ -76,6 +78,8 @@ int remove_phb_dynamic(struct pci_controller *phb) } } + ppc_iommu_unregister_device(phb); + pseries_msi_free_domains(phb); /* Keep a reference so phb isn't freed yet */ diff --git a/arch/powerpc/sysdev/udbg_memcons.c b/arch/powerpc/sysdev/udbg_memcons.c index 5020044400dc..4de57ba52236 100644 --- a/arch/powerpc/sysdev/udbg_memcons.c +++ b/arch/powerpc/sysdev/udbg_memcons.c @@ -41,7 +41,7 @@ struct memcons memcons = { .input_end = &memcons_input[CONFIG_PPC_MEMCONS_INPUT_SIZE], }; -void memcons_putc(char c) +static void memcons_putc(char c) { char *new_output_pos; @@ -54,7 +54,7 @@ void memcons_putc(char c) memcons.output_pos = new_output_pos; } -int memcons_getc_poll(void) +static int memcons_getc_poll(void) { char c; char *new_input_pos; @@ -77,7 +77,7 @@ int memcons_getc_poll(void) return -1; } -int memcons_getc(void) +static int memcons_getc(void) { int c; diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index bffbd869a068..e3142ce531a0 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -315,7 +315,6 @@ config AS_HAS_OPTION_ARCH # https://reviews.llvm.org/D123515 def_bool y depends on $(as-instr, .option arch$(comma) +m) - depends on !$(as-instr, .option arch$(comma) -i) source "arch/riscv/Kconfig.socs" source "arch/riscv/Kconfig.errata" diff --git a/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts b/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts index 07387f9c135c..72b87b08ab44 100644 --- a/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts +++ b/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts @@ -123,6 +123,7 @@ interrupt-parent = <&gpio>; interrupts = <1 IRQ_TYPE_LEVEL_LOW>; interrupt-controller; + #interrupt-cells = <2>; onkey { compatible = "dlg,da9063-onkey"; diff --git a/arch/riscv/boot/dts/sophgo/sg2042.dtsi b/arch/riscv/boot/dts/sophgo/sg2042.dtsi index 93256540d078..ead1cc35d88b 100644 --- a/arch/riscv/boot/dts/sophgo/sg2042.dtsi +++ b/arch/riscv/boot/dts/sophgo/sg2042.dtsi @@ -93,144 +93,160 @@ <&cpu63_intc 3>; }; - clint_mtimer0: timer@70ac000000 { + clint_mtimer0: timer@70ac004000 { compatible = "sophgo,sg2042-aclint-mtimer", "thead,c900-aclint-mtimer"; - reg = <0x00000070 0xac000000 0x00000000 0x00007ff8>; + reg = <0x00000070 0xac004000 0x00000000 0x0000c000>; + reg-names = "mtimecmp"; interrupts-extended = <&cpu0_intc 7>, <&cpu1_intc 7>, <&cpu2_intc 7>, <&cpu3_intc 7>; }; - clint_mtimer1: timer@70ac010000 { + clint_mtimer1: timer@70ac014000 { compatible = "sophgo,sg2042-aclint-mtimer", "thead,c900-aclint-mtimer"; - reg = <0x00000070 0xac010000 0x00000000 0x00007ff8>; + reg = <0x00000070 0xac014000 0x00000000 0x0000c000>; + reg-names = "mtimecmp"; interrupts-extended = <&cpu4_intc 7>, <&cpu5_intc 7>, <&cpu6_intc 7>, <&cpu7_intc 7>; }; - clint_mtimer2: timer@70ac020000 { + clint_mtimer2: timer@70ac024000 { compatible = "sophgo,sg2042-aclint-mtimer", "thead,c900-aclint-mtimer"; - reg = <0x00000070 0xac020000 0x00000000 0x00007ff8>; + reg = <0x00000070 0xac024000 0x00000000 0x0000c000>; + reg-names = "mtimecmp"; interrupts-extended = <&cpu8_intc 7>, <&cpu9_intc 7>, <&cpu10_intc 7>, <&cpu11_intc 7>; }; - clint_mtimer3: timer@70ac030000 { + clint_mtimer3: timer@70ac034000 { compatible = "sophgo,sg2042-aclint-mtimer", "thead,c900-aclint-mtimer"; - reg = <0x00000070 0xac030000 0x00000000 0x00007ff8>; + reg = <0x00000070 0xac034000 0x00000000 0x0000c000>; + reg-names = "mtimecmp"; interrupts-extended = <&cpu12_intc 7>, <&cpu13_intc 7>, <&cpu14_intc 7>, <&cpu15_intc 7>; }; - clint_mtimer4: timer@70ac040000 { + clint_mtimer4: timer@70ac044000 { compatible = "sophgo,sg2042-aclint-mtimer", "thead,c900-aclint-mtimer"; - reg = <0x00000070 0xac040000 0x00000000 0x00007ff8>; + reg = <0x00000070 0xac044000 0x00000000 0x0000c000>; + reg-names = "mtimecmp"; interrupts-extended = <&cpu16_intc 7>, <&cpu17_intc 7>, <&cpu18_intc 7>, <&cpu19_intc 7>; }; - clint_mtimer5: timer@70ac050000 { + clint_mtimer5: timer@70ac054000 { compatible = "sophgo,sg2042-aclint-mtimer", "thead,c900-aclint-mtimer"; - reg = <0x00000070 0xac050000 0x00000000 0x00007ff8>; + reg = <0x00000070 0xac054000 0x00000000 0x0000c000>; + reg-names = "mtimecmp"; interrupts-extended = <&cpu20_intc 7>, <&cpu21_intc 7>, <&cpu22_intc 7>, <&cpu23_intc 7>; }; - clint_mtimer6: timer@70ac060000 { + clint_mtimer6: timer@70ac064000 { compatible = "sophgo,sg2042-aclint-mtimer", "thead,c900-aclint-mtimer"; - reg = <0x00000070 0xac060000 0x00000000 0x00007ff8>; + reg = <0x00000070 0xac064000 0x00000000 0x0000c000>; + reg-names = "mtimecmp"; interrupts-extended = <&cpu24_intc 7>, <&cpu25_intc 7>, <&cpu26_intc 7>, <&cpu27_intc 7>; }; - clint_mtimer7: timer@70ac070000 { + clint_mtimer7: timer@70ac074000 { compatible = "sophgo,sg2042-aclint-mtimer", "thead,c900-aclint-mtimer"; - reg = <0x00000070 0xac070000 0x00000000 0x00007ff8>; + reg = <0x00000070 0xac074000 0x00000000 0x0000c000>; + reg-names = "mtimecmp"; interrupts-extended = <&cpu28_intc 7>, <&cpu29_intc 7>, <&cpu30_intc 7>, <&cpu31_intc 7>; }; - clint_mtimer8: timer@70ac080000 { + clint_mtimer8: timer@70ac084000 { compatible = "sophgo,sg2042-aclint-mtimer", "thead,c900-aclint-mtimer"; - reg = <0x00000070 0xac080000 0x00000000 0x00007ff8>; + reg = <0x00000070 0xac084000 0x00000000 0x0000c000>; + reg-names = "mtimecmp"; interrupts-extended = <&cpu32_intc 7>, <&cpu33_intc 7>, <&cpu34_intc 7>, <&cpu35_intc 7>; }; - clint_mtimer9: timer@70ac090000 { + clint_mtimer9: timer@70ac094000 { compatible = "sophgo,sg2042-aclint-mtimer", "thead,c900-aclint-mtimer"; - reg = <0x00000070 0xac090000 0x00000000 0x00007ff8>; + reg = <0x00000070 0xac094000 0x00000000 0x0000c000>; + reg-names = "mtimecmp"; interrupts-extended = <&cpu36_intc 7>, <&cpu37_intc 7>, <&cpu38_intc 7>, <&cpu39_intc 7>; }; - clint_mtimer10: timer@70ac0a0000 { + clint_mtimer10: timer@70ac0a4000 { compatible = "sophgo,sg2042-aclint-mtimer", "thead,c900-aclint-mtimer"; - reg = <0x00000070 0xac0a0000 0x00000000 0x00007ff8>; + reg = <0x00000070 0xac0a4000 0x00000000 0x0000c000>; + reg-names = "mtimecmp"; interrupts-extended = <&cpu40_intc 7>, <&cpu41_intc 7>, <&cpu42_intc 7>, <&cpu43_intc 7>; }; - clint_mtimer11: timer@70ac0b0000 { + clint_mtimer11: timer@70ac0b4000 { compatible = "sophgo,sg2042-aclint-mtimer", "thead,c900-aclint-mtimer"; - reg = <0x00000070 0xac0b0000 0x00000000 0x00007ff8>; + reg = <0x00000070 0xac0b4000 0x00000000 0x0000c000>; + reg-names = "mtimecmp"; interrupts-extended = <&cpu44_intc 7>, <&cpu45_intc 7>, <&cpu46_intc 7>, <&cpu47_intc 7>; }; - clint_mtimer12: timer@70ac0c0000 { + clint_mtimer12: timer@70ac0c4000 { compatible = "sophgo,sg2042-aclint-mtimer", "thead,c900-aclint-mtimer"; - reg = <0x00000070 0xac0c0000 0x00000000 0x00007ff8>; + reg = <0x00000070 0xac0c4000 0x00000000 0x0000c000>; + reg-names = "mtimecmp"; interrupts-extended = <&cpu48_intc 7>, <&cpu49_intc 7>, <&cpu50_intc 7>, <&cpu51_intc 7>; }; - clint_mtimer13: timer@70ac0d0000 { + clint_mtimer13: timer@70ac0d4000 { compatible = "sophgo,sg2042-aclint-mtimer", "thead,c900-aclint-mtimer"; - reg = <0x00000070 0xac0d0000 0x00000000 0x00007ff8>; + reg = <0x00000070 0xac0d4000 0x00000000 0x0000c000>; + reg-names = "mtimecmp"; interrupts-extended = <&cpu52_intc 7>, <&cpu53_intc 7>, <&cpu54_intc 7>, <&cpu55_intc 7>; }; - clint_mtimer14: timer@70ac0e0000 { + clint_mtimer14: timer@70ac0e4000 { compatible = "sophgo,sg2042-aclint-mtimer", "thead,c900-aclint-mtimer"; - reg = <0x00000070 0xac0e0000 0x00000000 0x00007ff8>; + reg = <0x00000070 0xac0e4000 0x00000000 0x0000c000>; + reg-names = "mtimecmp"; interrupts-extended = <&cpu56_intc 7>, <&cpu57_intc 7>, <&cpu58_intc 7>, <&cpu59_intc 7>; }; - clint_mtimer15: timer@70ac0f0000 { + clint_mtimer15: timer@70ac0f4000 { compatible = "sophgo,sg2042-aclint-mtimer", "thead,c900-aclint-mtimer"; - reg = <0x00000070 0xac0f0000 0x00000000 0x00007ff8>; + reg = <0x00000070 0xac0f4000 0x00000000 0x0000c000>; + reg-names = "mtimecmp"; interrupts-extended = <&cpu60_intc 7>, <&cpu61_intc 7>, <&cpu62_intc 7>, diff --git a/arch/riscv/boot/dts/starfive/jh7100.dtsi b/arch/riscv/boot/dts/starfive/jh7100.dtsi index c216aaecac53..8bcf36d07f3f 100644 --- a/arch/riscv/boot/dts/starfive/jh7100.dtsi +++ b/arch/riscv/boot/dts/starfive/jh7100.dtsi @@ -96,14 +96,14 @@ thermal-sensors = <&sfctemp>; trips { - cpu_alert0 { + cpu-alert0 { /* milliCelsius */ temperature = <75000>; hysteresis = <2000>; type = "passive"; }; - cpu_crit { + cpu-crit { /* milliCelsius */ temperature = <90000>; hysteresis = <2000>; @@ -113,28 +113,28 @@ }; }; - osc_sys: osc_sys { + osc_sys: osc-sys { compatible = "fixed-clock"; #clock-cells = <0>; /* This value must be overridden by the board */ clock-frequency = <0>; }; - osc_aud: osc_aud { + osc_aud: osc-aud { compatible = "fixed-clock"; #clock-cells = <0>; /* This value must be overridden by the board */ clock-frequency = <0>; }; - gmac_rmii_ref: gmac_rmii_ref { + gmac_rmii_ref: gmac-rmii-ref { compatible = "fixed-clock"; #clock-cells = <0>; /* Should be overridden by the board when needed */ clock-frequency = <0>; }; - gmac_gr_mii_rxclk: gmac_gr_mii_rxclk { + gmac_gr_mii_rxclk: gmac-gr-mii-rxclk { compatible = "fixed-clock"; #clock-cells = <0>; /* Should be overridden by the board when needed */ diff --git a/arch/riscv/boot/dts/starfive/jh7110.dtsi b/arch/riscv/boot/dts/starfive/jh7110.dtsi index 45213cdf50dc..74ed3b9264d8 100644 --- a/arch/riscv/boot/dts/starfive/jh7110.dtsi +++ b/arch/riscv/boot/dts/starfive/jh7110.dtsi @@ -237,14 +237,14 @@ }; trips { - cpu_alert0: cpu_alert0 { + cpu_alert0: cpu-alert0 { /* milliCelsius */ temperature = <85000>; hysteresis = <2000>; type = "passive"; }; - cpu_crit { + cpu-crit { /* milliCelsius */ temperature = <100000>; hysteresis = <2000>; diff --git a/arch/riscv/include/asm/arch_hweight.h b/arch/riscv/include/asm/arch_hweight.h index c20236a0725b..85b2c443823e 100644 --- a/arch/riscv/include/asm/arch_hweight.h +++ b/arch/riscv/include/asm/arch_hweight.h @@ -20,7 +20,7 @@ static __always_inline unsigned int __arch_hweight32(unsigned int w) { #ifdef CONFIG_RISCV_ISA_ZBB - asm_volatile_goto(ALTERNATIVE("j %l[legacy]", "nop", 0, + asm goto(ALTERNATIVE("j %l[legacy]", "nop", 0, RISCV_ISA_EXT_ZBB, 1) : : : : legacy); @@ -51,7 +51,7 @@ static inline unsigned int __arch_hweight8(unsigned int w) static __always_inline unsigned long __arch_hweight64(__u64 w) { # ifdef CONFIG_RISCV_ISA_ZBB - asm_volatile_goto(ALTERNATIVE("j %l[legacy]", "nop", 0, + asm goto(ALTERNATIVE("j %l[legacy]", "nop", 0, RISCV_ISA_EXT_ZBB, 1) : : : : legacy); diff --git a/arch/riscv/include/asm/bitops.h b/arch/riscv/include/asm/bitops.h index 9ffc35537024..329d8244a9b3 100644 --- a/arch/riscv/include/asm/bitops.h +++ b/arch/riscv/include/asm/bitops.h @@ -39,7 +39,7 @@ static __always_inline unsigned long variable__ffs(unsigned long word) { int num; - asm_volatile_goto(ALTERNATIVE("j %l[legacy]", "nop", 0, + asm goto(ALTERNATIVE("j %l[legacy]", "nop", 0, RISCV_ISA_EXT_ZBB, 1) : : : : legacy); @@ -95,7 +95,7 @@ static __always_inline unsigned long variable__fls(unsigned long word) { int num; - asm_volatile_goto(ALTERNATIVE("j %l[legacy]", "nop", 0, + asm goto(ALTERNATIVE("j %l[legacy]", "nop", 0, RISCV_ISA_EXT_ZBB, 1) : : : : legacy); @@ -154,7 +154,7 @@ static __always_inline int variable_ffs(int x) if (!x) return 0; - asm_volatile_goto(ALTERNATIVE("j %l[legacy]", "nop", 0, + asm goto(ALTERNATIVE("j %l[legacy]", "nop", 0, RISCV_ISA_EXT_ZBB, 1) : : : : legacy); @@ -209,7 +209,7 @@ static __always_inline int variable_fls(unsigned int x) if (!x) return 0; - asm_volatile_goto(ALTERNATIVE("j %l[legacy]", "nop", 0, + asm goto(ALTERNATIVE("j %l[legacy]", "nop", 0, RISCV_ISA_EXT_ZBB, 1) : : : : legacy); diff --git a/arch/riscv/include/asm/checksum.h b/arch/riscv/include/asm/checksum.h index a5b60b54b101..88e6f1499e88 100644 --- a/arch/riscv/include/asm/checksum.h +++ b/arch/riscv/include/asm/checksum.h @@ -53,7 +53,7 @@ static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl) IS_ENABLED(CONFIG_RISCV_ALTERNATIVE)) { unsigned long fold_temp; - asm_volatile_goto(ALTERNATIVE("j %l[no_zbb]", "nop", 0, + asm goto(ALTERNATIVE("j %l[no_zbb]", "nop", 0, RISCV_ISA_EXT_ZBB, 1) : : diff --git a/arch/riscv/include/asm/cpufeature.h b/arch/riscv/include/asm/cpufeature.h index 5a626ed2c47a..0bd11862b760 100644 --- a/arch/riscv/include/asm/cpufeature.h +++ b/arch/riscv/include/asm/cpufeature.h @@ -80,7 +80,7 @@ riscv_has_extension_likely(const unsigned long ext) "ext must be < RISCV_ISA_EXT_MAX"); if (IS_ENABLED(CONFIG_RISCV_ALTERNATIVE)) { - asm_volatile_goto( + asm goto( ALTERNATIVE("j %l[l_no]", "nop", 0, %[ext], 1) : : [ext] "i" (ext) @@ -103,7 +103,7 @@ riscv_has_extension_unlikely(const unsigned long ext) "ext must be < RISCV_ISA_EXT_MAX"); if (IS_ENABLED(CONFIG_RISCV_ALTERNATIVE)) { - asm_volatile_goto( + asm goto( ALTERNATIVE("nop", "j %l[l_yes]", 0, %[ext], 1) : : [ext] "i" (ext) diff --git a/arch/riscv/include/asm/csr.h b/arch/riscv/include/asm/csr.h index 510014051f5d..2468c55933cd 100644 --- a/arch/riscv/include/asm/csr.h +++ b/arch/riscv/include/asm/csr.h @@ -424,6 +424,7 @@ # define CSR_STATUS CSR_MSTATUS # define CSR_IE CSR_MIE # define CSR_TVEC CSR_MTVEC +# define CSR_ENVCFG CSR_MENVCFG # define CSR_SCRATCH CSR_MSCRATCH # define CSR_EPC CSR_MEPC # define CSR_CAUSE CSR_MCAUSE @@ -448,6 +449,7 @@ # define CSR_STATUS CSR_SSTATUS # define CSR_IE CSR_SIE # define CSR_TVEC CSR_STVEC +# define CSR_ENVCFG CSR_SENVCFG # define CSR_SCRATCH CSR_SSCRATCH # define CSR_EPC CSR_SEPC # define CSR_CAUSE CSR_SCAUSE diff --git a/arch/riscv/include/asm/ftrace.h b/arch/riscv/include/asm/ftrace.h index 329172122952..15055f9df4da 100644 --- a/arch/riscv/include/asm/ftrace.h +++ b/arch/riscv/include/asm/ftrace.h @@ -25,6 +25,11 @@ #define ARCH_SUPPORTS_FTRACE_OPS 1 #ifndef __ASSEMBLY__ + +extern void *return_address(unsigned int level); + +#define ftrace_return_address(n) return_address(n) + void MCOUNT_NAME(void); static inline unsigned long ftrace_call_adjust(unsigned long addr) { diff --git a/arch/riscv/include/asm/hugetlb.h b/arch/riscv/include/asm/hugetlb.h index 4c5b0e929890..22deb7a2a6ec 100644 --- a/arch/riscv/include/asm/hugetlb.h +++ b/arch/riscv/include/asm/hugetlb.h @@ -11,6 +11,11 @@ static inline void arch_clear_hugepage_flags(struct page *page) } #define arch_clear_hugepage_flags arch_clear_hugepage_flags +#ifdef CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION +bool arch_hugetlb_migration_supported(struct hstate *h); +#define arch_hugetlb_migration_supported arch_hugetlb_migration_supported +#endif + #ifdef CONFIG_RISCV_ISA_SVNAPOT #define __HAVE_ARCH_HUGE_PTE_CLEAR void huge_pte_clear(struct mm_struct *mm, unsigned long addr, diff --git a/arch/riscv/include/asm/hwcap.h b/arch/riscv/include/asm/hwcap.h index 5340f818746b..1f2d2599c655 100644 --- a/arch/riscv/include/asm/hwcap.h +++ b/arch/riscv/include/asm/hwcap.h @@ -81,6 +81,8 @@ #define RISCV_ISA_EXT_ZTSO 72 #define RISCV_ISA_EXT_ZACAS 73 +#define RISCV_ISA_EXT_XLINUXENVCFG 127 + #define RISCV_ISA_EXT_MAX 128 #define RISCV_ISA_EXT_INVALID U32_MAX diff --git a/arch/riscv/include/asm/jump_label.h b/arch/riscv/include/asm/jump_label.h index 14a5ea8d8ef0..4a35d787c019 100644 --- a/arch/riscv/include/asm/jump_label.h +++ b/arch/riscv/include/asm/jump_label.h @@ -17,7 +17,7 @@ static __always_inline bool arch_static_branch(struct static_key * const key, const bool branch) { - asm_volatile_goto( + asm goto( " .align 2 \n\t" " .option push \n\t" " .option norelax \n\t" @@ -39,7 +39,7 @@ label: static __always_inline bool arch_static_branch_jump(struct static_key * const key, const bool branch) { - asm_volatile_goto( + asm goto( " .align 2 \n\t" " .option push \n\t" " .option norelax \n\t" diff --git a/arch/riscv/include/asm/pgalloc.h b/arch/riscv/include/asm/pgalloc.h index d169a4f41a2e..c80bb9990d32 100644 --- a/arch/riscv/include/asm/pgalloc.h +++ b/arch/riscv/include/asm/pgalloc.h @@ -95,7 +95,13 @@ static inline void pud_free(struct mm_struct *mm, pud_t *pud) __pud_free(mm, pud); } -#define __pud_free_tlb(tlb, pud, addr) pud_free((tlb)->mm, pud) +#define __pud_free_tlb(tlb, pud, addr) \ +do { \ + if (pgtable_l4_enabled) { \ + pagetable_pud_dtor(virt_to_ptdesc(pud)); \ + tlb_remove_page_ptdesc((tlb), virt_to_ptdesc(pud)); \ + } \ +} while (0) #define p4d_alloc_one p4d_alloc_one static inline p4d_t *p4d_alloc_one(struct mm_struct *mm, unsigned long addr) @@ -124,7 +130,11 @@ static inline void p4d_free(struct mm_struct *mm, p4d_t *p4d) __p4d_free(mm, p4d); } -#define __p4d_free_tlb(tlb, p4d, addr) p4d_free((tlb)->mm, p4d) +#define __p4d_free_tlb(tlb, p4d, addr) \ +do { \ + if (pgtable_l5_enabled) \ + tlb_remove_page_ptdesc((tlb), virt_to_ptdesc(p4d)); \ +} while (0) #endif /* __PAGETABLE_PMD_FOLDED */ static inline void sync_kernel_mappings(pgd_t *pgd) @@ -149,7 +159,11 @@ static inline pgd_t *pgd_alloc(struct mm_struct *mm) #ifndef __PAGETABLE_PMD_FOLDED -#define __pmd_free_tlb(tlb, pmd, addr) pmd_free((tlb)->mm, pmd) +#define __pmd_free_tlb(tlb, pmd, addr) \ +do { \ + pagetable_pmd_dtor(virt_to_ptdesc(pmd)); \ + tlb_remove_page_ptdesc((tlb), virt_to_ptdesc(pmd)); \ +} while (0) #endif /* __PAGETABLE_PMD_FOLDED */ diff --git a/arch/riscv/include/asm/pgtable-64.h b/arch/riscv/include/asm/pgtable-64.h index b42017d76924..b99bd66107a6 100644 --- a/arch/riscv/include/asm/pgtable-64.h +++ b/arch/riscv/include/asm/pgtable-64.h @@ -136,7 +136,7 @@ enum napot_cont_order { * 10010 - IO Strongly-ordered, Non-cacheable, Non-bufferable, Shareable, Non-trustable */ #define _PAGE_PMA_THEAD ((1UL << 62) | (1UL << 61) | (1UL << 60)) -#define _PAGE_NOCACHE_THEAD ((1UL < 61) | (1UL << 60)) +#define _PAGE_NOCACHE_THEAD ((1UL << 61) | (1UL << 60)) #define _PAGE_IO_THEAD ((1UL << 63) | (1UL << 60)) #define _PAGE_MTMASK_THEAD (_PAGE_PMA_THEAD | _PAGE_IO_THEAD | (1UL << 59)) diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h index 0c94260b5d0c..6066822e7396 100644 --- a/arch/riscv/include/asm/pgtable.h +++ b/arch/riscv/include/asm/pgtable.h @@ -84,7 +84,7 @@ * Define vmemmap for pfn_to_page & page_to_pfn calls. Needed if kernel * is configured with CONFIG_SPARSEMEM_VMEMMAP enabled. */ -#define vmemmap ((struct page *)VMEMMAP_START) +#define vmemmap ((struct page *)VMEMMAP_START - (phys_ram_base >> PAGE_SHIFT)) #define PCI_IO_SIZE SZ_16M #define PCI_IO_END VMEMMAP_START @@ -439,6 +439,10 @@ static inline pte_t pte_mkhuge(pte_t pte) return pte; } +#define pte_leaf_size(pte) (pte_napot(pte) ? \ + napot_cont_size(napot_cont_order(pte)) :\ + PAGE_SIZE) + #ifdef CONFIG_NUMA_BALANCING /* * See the comment in include/asm-generic/pgtable.h diff --git a/arch/riscv/include/asm/stacktrace.h b/arch/riscv/include/asm/stacktrace.h index f7e8ef2418b9..b1495a7e06ce 100644 --- a/arch/riscv/include/asm/stacktrace.h +++ b/arch/riscv/include/asm/stacktrace.h @@ -21,4 +21,9 @@ static inline bool on_thread_stack(void) return !(((unsigned long)(current->stack) ^ current_stack_pointer) & ~(THREAD_SIZE - 1)); } + +#ifdef CONFIG_VMAP_STACK +DECLARE_PER_CPU(unsigned long [OVERFLOW_STACK_SIZE/sizeof(long)], overflow_stack); +#endif /* CONFIG_VMAP_STACK */ + #endif /* _ASM_RISCV_STACKTRACE_H */ diff --git a/arch/riscv/include/asm/suspend.h b/arch/riscv/include/asm/suspend.h index 02f87867389a..491296a335d0 100644 --- a/arch/riscv/include/asm/suspend.h +++ b/arch/riscv/include/asm/suspend.h @@ -14,6 +14,7 @@ struct suspend_context { struct pt_regs regs; /* Saved and restored by high-level functions */ unsigned long scratch; + unsigned long envcfg; unsigned long tvec; unsigned long ie; #ifdef CONFIG_MMU diff --git a/arch/riscv/include/asm/tlb.h b/arch/riscv/include/asm/tlb.h index 1eb5682b2af6..50b63b5c15bd 100644 --- a/arch/riscv/include/asm/tlb.h +++ b/arch/riscv/include/asm/tlb.h @@ -16,7 +16,7 @@ static void tlb_flush(struct mmu_gather *tlb); static inline void tlb_flush(struct mmu_gather *tlb) { #ifdef CONFIG_MMU - if (tlb->fullmm || tlb->need_flush_all) + if (tlb->fullmm || tlb->need_flush_all || tlb->freed_tables) flush_tlb_mm(tlb->mm); else flush_tlb_mm_range(tlb->mm, tlb->start, tlb->end, diff --git a/arch/riscv/include/asm/tlbflush.h b/arch/riscv/include/asm/tlbflush.h index 928f096dca21..4112cc8d1d69 100644 --- a/arch/riscv/include/asm/tlbflush.h +++ b/arch/riscv/include/asm/tlbflush.h @@ -75,6 +75,7 @@ static inline void flush_tlb_kernel_range(unsigned long start, #define flush_tlb_mm(mm) flush_tlb_all() #define flush_tlb_mm_range(mm, start, end, page_size) flush_tlb_all() +#define local_flush_tlb_kernel_range(start, end) flush_tlb_all() #endif /* !CONFIG_SMP || !CONFIG_MMU */ #endif /* _ASM_RISCV_TLBFLUSH_H */ diff --git a/arch/riscv/include/asm/vmalloc.h b/arch/riscv/include/asm/vmalloc.h index 924d01b56c9a..51f6dfe19745 100644 --- a/arch/riscv/include/asm/vmalloc.h +++ b/arch/riscv/include/asm/vmalloc.h @@ -19,65 +19,6 @@ static inline bool arch_vmap_pmd_supported(pgprot_t prot) return true; } -#ifdef CONFIG_RISCV_ISA_SVNAPOT -#include <linux/pgtable.h> +#endif -#define arch_vmap_pte_range_map_size arch_vmap_pte_range_map_size -static inline unsigned long arch_vmap_pte_range_map_size(unsigned long addr, unsigned long end, - u64 pfn, unsigned int max_page_shift) -{ - unsigned long map_size = PAGE_SIZE; - unsigned long size, order; - - if (!has_svnapot()) - return map_size; - - for_each_napot_order_rev(order) { - if (napot_cont_shift(order) > max_page_shift) - continue; - - size = napot_cont_size(order); - if (end - addr < size) - continue; - - if (!IS_ALIGNED(addr, size)) - continue; - - if (!IS_ALIGNED(PFN_PHYS(pfn), size)) - continue; - - map_size = size; - break; - } - - return map_size; -} - -#define arch_vmap_pte_supported_shift arch_vmap_pte_supported_shift -static inline int arch_vmap_pte_supported_shift(unsigned long size) -{ - int shift = PAGE_SHIFT; - unsigned long order; - - if (!has_svnapot()) - return shift; - - WARN_ON_ONCE(size >= PMD_SIZE); - - for_each_napot_order_rev(order) { - if (napot_cont_size(order) > size) - continue; - - if (!IS_ALIGNED(size, napot_cont_size(order))) - continue; - - shift = napot_cont_shift(order); - break; - } - - return shift; -} - -#endif /* CONFIG_RISCV_ISA_SVNAPOT */ -#endif /* CONFIG_HAVE_ARCH_HUGE_VMAP */ #endif /* _ASM_RISCV_VMALLOC_H */ diff --git a/arch/riscv/include/uapi/asm/kvm.h b/arch/riscv/include/uapi/asm/kvm.h index d6b7a5b95874..7499e88a947c 100644 --- a/arch/riscv/include/uapi/asm/kvm.h +++ b/arch/riscv/include/uapi/asm/kvm.h @@ -139,6 +139,33 @@ enum KVM_RISCV_ISA_EXT_ID { KVM_RISCV_ISA_EXT_ZIHPM, KVM_RISCV_ISA_EXT_SMSTATEEN, KVM_RISCV_ISA_EXT_ZICOND, + KVM_RISCV_ISA_EXT_ZBC, + KVM_RISCV_ISA_EXT_ZBKB, + KVM_RISCV_ISA_EXT_ZBKC, + KVM_RISCV_ISA_EXT_ZBKX, + KVM_RISCV_ISA_EXT_ZKND, + KVM_RISCV_ISA_EXT_ZKNE, + KVM_RISCV_ISA_EXT_ZKNH, + KVM_RISCV_ISA_EXT_ZKR, + KVM_RISCV_ISA_EXT_ZKSED, + KVM_RISCV_ISA_EXT_ZKSH, + KVM_RISCV_ISA_EXT_ZKT, + KVM_RISCV_ISA_EXT_ZVBB, + KVM_RISCV_ISA_EXT_ZVBC, + KVM_RISCV_ISA_EXT_ZVKB, + KVM_RISCV_ISA_EXT_ZVKG, + KVM_RISCV_ISA_EXT_ZVKNED, + KVM_RISCV_ISA_EXT_ZVKNHA, + KVM_RISCV_ISA_EXT_ZVKNHB, + KVM_RISCV_ISA_EXT_ZVKSED, + KVM_RISCV_ISA_EXT_ZVKSH, + KVM_RISCV_ISA_EXT_ZVKT, + KVM_RISCV_ISA_EXT_ZFH, + KVM_RISCV_ISA_EXT_ZFHMIN, + KVM_RISCV_ISA_EXT_ZIHINTNTL, + KVM_RISCV_ISA_EXT_ZVFH, + KVM_RISCV_ISA_EXT_ZVFHMIN, + KVM_RISCV_ISA_EXT_ZFA, KVM_RISCV_ISA_EXT_MAX, }; diff --git a/arch/riscv/kernel/Makefile b/arch/riscv/kernel/Makefile index f71910718053..604d6bf7e476 100644 --- a/arch/riscv/kernel/Makefile +++ b/arch/riscv/kernel/Makefile @@ -7,6 +7,7 @@ ifdef CONFIG_FTRACE CFLAGS_REMOVE_ftrace.o = $(CC_FLAGS_FTRACE) CFLAGS_REMOVE_patch.o = $(CC_FLAGS_FTRACE) CFLAGS_REMOVE_sbi.o = $(CC_FLAGS_FTRACE) +CFLAGS_REMOVE_return_address.o = $(CC_FLAGS_FTRACE) endif CFLAGS_syscall_table.o += $(call cc-option,-Wno-override-init,) CFLAGS_compat_syscall_table.o += $(call cc-option,-Wno-override-init,) @@ -46,6 +47,7 @@ obj-y += irq.o obj-y += process.o obj-y += ptrace.o obj-y += reset.o +obj-y += return_address.o obj-y += setup.o obj-y += signal.o obj-y += syscall_table.o diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c index 89920f84d0a3..79a5a35fab96 100644 --- a/arch/riscv/kernel/cpufeature.c +++ b/arch/riscv/kernel/cpufeature.c @@ -24,6 +24,7 @@ #include <asm/hwprobe.h> #include <asm/patch.h> #include <asm/processor.h> +#include <asm/sbi.h> #include <asm/vector.h> #include "copy-unaligned.h" @@ -202,6 +203,16 @@ static const unsigned int riscv_zvbb_exts[] = { }; /* + * While the [ms]envcfg CSRs were not defined until version 1.12 of the RISC-V + * privileged ISA, the existence of the CSRs is implied by any extension which + * specifies [ms]envcfg bit(s). Hence, we define a custom ISA extension for the + * existence of the CSR, and treat it as a subset of those other extensions. + */ +static const unsigned int riscv_xlinuxenvcfg_exts[] = { + RISCV_ISA_EXT_XLINUXENVCFG +}; + +/* * The canonical order of ISA extension names in the ISA string is defined in * chapter 27 of the unprivileged specification. * @@ -250,8 +261,8 @@ const struct riscv_isa_ext_data riscv_isa_ext[] = { __RISCV_ISA_EXT_DATA(c, RISCV_ISA_EXT_c), __RISCV_ISA_EXT_DATA(v, RISCV_ISA_EXT_v), __RISCV_ISA_EXT_DATA(h, RISCV_ISA_EXT_h), - __RISCV_ISA_EXT_DATA(zicbom, RISCV_ISA_EXT_ZICBOM), - __RISCV_ISA_EXT_DATA(zicboz, RISCV_ISA_EXT_ZICBOZ), + __RISCV_ISA_EXT_SUPERSET(zicbom, RISCV_ISA_EXT_ZICBOM, riscv_xlinuxenvcfg_exts), + __RISCV_ISA_EXT_SUPERSET(zicboz, RISCV_ISA_EXT_ZICBOZ, riscv_xlinuxenvcfg_exts), __RISCV_ISA_EXT_DATA(zicntr, RISCV_ISA_EXT_ZICNTR), __RISCV_ISA_EXT_DATA(zicond, RISCV_ISA_EXT_ZICOND), __RISCV_ISA_EXT_DATA(zicsr, RISCV_ISA_EXT_ZICSR), @@ -539,6 +550,20 @@ static void __init riscv_fill_hwcap_from_isa_string(unsigned long *isa2hwcap) } /* + * "V" in ISA strings is ambiguous in practice: it should mean + * just the standard V-1.0 but vendors aren't well behaved. + * Many vendors with T-Head CPU cores which implement the 0.7.1 + * version of the vector specification put "v" into their DTs. + * CPU cores with the ratified spec will contain non-zero + * marchid. + */ + if (acpi_disabled && riscv_cached_mvendorid(cpu) == THEAD_VENDOR_ID && + riscv_cached_marchid(cpu) == 0x0) { + this_hwcap &= ~isa2hwcap[RISCV_ISA_EXT_v]; + clear_bit(RISCV_ISA_EXT_v, isainfo->isa); + } + + /* * All "okay" hart should have same isa. Set HWCAP based on * common capabilities of every "okay" hart, in case they don't * have. @@ -950,7 +975,7 @@ arch_initcall(check_unaligned_access_all_cpus); void riscv_user_isa_enable(void) { if (riscv_cpu_has_extension_unlikely(smp_processor_id(), RISCV_ISA_EXT_ZICBOZ)) - csr_set(CSR_SENVCFG, ENVCFG_CBZE); + csr_set(CSR_ENVCFG, ENVCFG_CBZE); } #ifdef CONFIG_RISCV_ALTERNATIVE diff --git a/arch/riscv/kernel/paravirt.c b/arch/riscv/kernel/paravirt.c index 8e114f5930ce..0d6225fd3194 100644 --- a/arch/riscv/kernel/paravirt.c +++ b/arch/riscv/kernel/paravirt.c @@ -41,7 +41,7 @@ static int __init parse_no_stealacc(char *arg) early_param("no-steal-acc", parse_no_stealacc); -DEFINE_PER_CPU(struct sbi_sta_struct, steal_time) __aligned(64); +static DEFINE_PER_CPU(struct sbi_sta_struct, steal_time) __aligned(64); static bool __init has_pv_steal_clock(void) { @@ -91,8 +91,8 @@ static int pv_time_cpu_down_prepare(unsigned int cpu) static u64 pv_time_steal_clock(int cpu) { struct sbi_sta_struct *st = per_cpu_ptr(&steal_time, cpu); - u32 sequence; - u64 steal; + __le32 sequence; + __le64 steal; /* * Check the sequence field before and after reading the steal diff --git a/arch/riscv/kernel/return_address.c b/arch/riscv/kernel/return_address.c new file mode 100644 index 000000000000..c8115ec8fb30 --- /dev/null +++ b/arch/riscv/kernel/return_address.c @@ -0,0 +1,48 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * This code come from arch/arm64/kernel/return_address.c + * + * Copyright (C) 2023 SiFive. + */ + +#include <linux/export.h> +#include <linux/kprobes.h> +#include <linux/stacktrace.h> + +struct return_address_data { + unsigned int level; + void *addr; +}; + +static bool save_return_addr(void *d, unsigned long pc) +{ + struct return_address_data *data = d; + + if (!data->level) { + data->addr = (void *)pc; + return false; + } + + --data->level; + + return true; +} +NOKPROBE_SYMBOL(save_return_addr); + +noinline void *return_address(unsigned int level) +{ + struct return_address_data data; + + data.level = level + 3; + data.addr = NULL; + + arch_stack_walk(save_return_addr, &data, current, NULL); + + if (!data.level) + return data.addr; + else + return NULL; + +} +EXPORT_SYMBOL_GPL(return_address); +NOKPROBE_SYMBOL(return_address); diff --git a/arch/riscv/kernel/smpboot.c b/arch/riscv/kernel/smpboot.c index 519b6bd946e5..c4ed7d977f57 100644 --- a/arch/riscv/kernel/smpboot.c +++ b/arch/riscv/kernel/smpboot.c @@ -42,10 +42,6 @@ static DECLARE_COMPLETION(cpu_running); -void __init smp_prepare_boot_cpu(void) -{ -} - void __init smp_prepare_cpus(unsigned int max_cpus) { int cpuid; diff --git a/arch/riscv/kernel/suspend.c b/arch/riscv/kernel/suspend.c index 239509367e42..299795341e8a 100644 --- a/arch/riscv/kernel/suspend.c +++ b/arch/riscv/kernel/suspend.c @@ -15,6 +15,8 @@ void suspend_save_csrs(struct suspend_context *context) { context->scratch = csr_read(CSR_SCRATCH); + if (riscv_cpu_has_extension_unlikely(smp_processor_id(), RISCV_ISA_EXT_XLINUXENVCFG)) + context->envcfg = csr_read(CSR_ENVCFG); context->tvec = csr_read(CSR_TVEC); context->ie = csr_read(CSR_IE); @@ -36,6 +38,8 @@ void suspend_save_csrs(struct suspend_context *context) void suspend_restore_csrs(struct suspend_context *context) { csr_write(CSR_SCRATCH, context->scratch); + if (riscv_cpu_has_extension_unlikely(smp_processor_id(), RISCV_ISA_EXT_XLINUXENVCFG)) + csr_write(CSR_ENVCFG, context->envcfg); csr_write(CSR_TVEC, context->tvec); csr_write(CSR_IE, context->ie); diff --git a/arch/riscv/kernel/vdso.c b/arch/riscv/kernel/vdso.c index 2cf76218a5bd..98315b98256d 100644 --- a/arch/riscv/kernel/vdso.c +++ b/arch/riscv/kernel/vdso.c @@ -30,14 +30,8 @@ enum rv_vdso_map { #define VVAR_SIZE (VVAR_NR_PAGES << PAGE_SHIFT) -/* - * The vDSO data page. - */ -static union { - struct vdso_data data; - u8 page[PAGE_SIZE]; -} vdso_data_store __page_aligned_data; -struct vdso_data *vdso_data = &vdso_data_store.data; +static union vdso_data_store vdso_data_store __page_aligned_data; +struct vdso_data *vdso_data = vdso_data_store.data; struct __vdso_info { const char *name; diff --git a/arch/riscv/kvm/vcpu_onereg.c b/arch/riscv/kvm/vcpu_onereg.c index fc34557f5356..5f7355e96008 100644 --- a/arch/riscv/kvm/vcpu_onereg.c +++ b/arch/riscv/kvm/vcpu_onereg.c @@ -42,15 +42,42 @@ static const unsigned long kvm_isa_ext_arr[] = { KVM_ISA_EXT_ARR(SVPBMT), KVM_ISA_EXT_ARR(ZBA), KVM_ISA_EXT_ARR(ZBB), + KVM_ISA_EXT_ARR(ZBC), + KVM_ISA_EXT_ARR(ZBKB), + KVM_ISA_EXT_ARR(ZBKC), + KVM_ISA_EXT_ARR(ZBKX), KVM_ISA_EXT_ARR(ZBS), + KVM_ISA_EXT_ARR(ZFA), + KVM_ISA_EXT_ARR(ZFH), + KVM_ISA_EXT_ARR(ZFHMIN), KVM_ISA_EXT_ARR(ZICBOM), KVM_ISA_EXT_ARR(ZICBOZ), KVM_ISA_EXT_ARR(ZICNTR), KVM_ISA_EXT_ARR(ZICOND), KVM_ISA_EXT_ARR(ZICSR), KVM_ISA_EXT_ARR(ZIFENCEI), + KVM_ISA_EXT_ARR(ZIHINTNTL), KVM_ISA_EXT_ARR(ZIHINTPAUSE), KVM_ISA_EXT_ARR(ZIHPM), + KVM_ISA_EXT_ARR(ZKND), + KVM_ISA_EXT_ARR(ZKNE), + KVM_ISA_EXT_ARR(ZKNH), + KVM_ISA_EXT_ARR(ZKR), + KVM_ISA_EXT_ARR(ZKSED), + KVM_ISA_EXT_ARR(ZKSH), + KVM_ISA_EXT_ARR(ZKT), + KVM_ISA_EXT_ARR(ZVBB), + KVM_ISA_EXT_ARR(ZVBC), + KVM_ISA_EXT_ARR(ZVFH), + KVM_ISA_EXT_ARR(ZVFHMIN), + KVM_ISA_EXT_ARR(ZVKB), + KVM_ISA_EXT_ARR(ZVKG), + KVM_ISA_EXT_ARR(ZVKNED), + KVM_ISA_EXT_ARR(ZVKNHA), + KVM_ISA_EXT_ARR(ZVKNHB), + KVM_ISA_EXT_ARR(ZVKSED), + KVM_ISA_EXT_ARR(ZVKSH), + KVM_ISA_EXT_ARR(ZVKT), }; static unsigned long kvm_riscv_vcpu_base2isa_ext(unsigned long base_ext) @@ -92,13 +119,40 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext) case KVM_RISCV_ISA_EXT_SVNAPOT: case KVM_RISCV_ISA_EXT_ZBA: case KVM_RISCV_ISA_EXT_ZBB: + case KVM_RISCV_ISA_EXT_ZBC: + case KVM_RISCV_ISA_EXT_ZBKB: + case KVM_RISCV_ISA_EXT_ZBKC: + case KVM_RISCV_ISA_EXT_ZBKX: case KVM_RISCV_ISA_EXT_ZBS: + case KVM_RISCV_ISA_EXT_ZFA: + case KVM_RISCV_ISA_EXT_ZFH: + case KVM_RISCV_ISA_EXT_ZFHMIN: case KVM_RISCV_ISA_EXT_ZICNTR: case KVM_RISCV_ISA_EXT_ZICOND: case KVM_RISCV_ISA_EXT_ZICSR: case KVM_RISCV_ISA_EXT_ZIFENCEI: + case KVM_RISCV_ISA_EXT_ZIHINTNTL: case KVM_RISCV_ISA_EXT_ZIHINTPAUSE: case KVM_RISCV_ISA_EXT_ZIHPM: + case KVM_RISCV_ISA_EXT_ZKND: + case KVM_RISCV_ISA_EXT_ZKNE: + case KVM_RISCV_ISA_EXT_ZKNH: + case KVM_RISCV_ISA_EXT_ZKR: + case KVM_RISCV_ISA_EXT_ZKSED: + case KVM_RISCV_ISA_EXT_ZKSH: + case KVM_RISCV_ISA_EXT_ZKT: + case KVM_RISCV_ISA_EXT_ZVBB: + case KVM_RISCV_ISA_EXT_ZVBC: + case KVM_RISCV_ISA_EXT_ZVFH: + case KVM_RISCV_ISA_EXT_ZVFHMIN: + case KVM_RISCV_ISA_EXT_ZVKB: + case KVM_RISCV_ISA_EXT_ZVKG: + case KVM_RISCV_ISA_EXT_ZVKNED: + case KVM_RISCV_ISA_EXT_ZVKNHA: + case KVM_RISCV_ISA_EXT_ZVKNHB: + case KVM_RISCV_ISA_EXT_ZVKSED: + case KVM_RISCV_ISA_EXT_ZVKSH: + case KVM_RISCV_ISA_EXT_ZVKT: return false; /* Extensions which can be disabled using Smstateen */ case KVM_RISCV_ISA_EXT_SSAIA: diff --git a/arch/riscv/kvm/vcpu_sbi_sta.c b/arch/riscv/kvm/vcpu_sbi_sta.c index 01f09fe8c3b0..d8cf9ca28c61 100644 --- a/arch/riscv/kvm/vcpu_sbi_sta.c +++ b/arch/riscv/kvm/vcpu_sbi_sta.c @@ -26,8 +26,12 @@ void kvm_riscv_vcpu_record_steal_time(struct kvm_vcpu *vcpu) { gpa_t shmem = vcpu->arch.sta.shmem; u64 last_steal = vcpu->arch.sta.last_steal; - u32 *sequence_ptr, sequence; - u64 *steal_ptr, steal; + __le32 __user *sequence_ptr; + __le64 __user *steal_ptr; + __le32 sequence_le; + __le64 steal_le; + u32 sequence; + u64 steal; unsigned long hva; gfn_t gfn; @@ -47,22 +51,22 @@ void kvm_riscv_vcpu_record_steal_time(struct kvm_vcpu *vcpu) return; } - sequence_ptr = (u32 *)(hva + offset_in_page(shmem) + + sequence_ptr = (__le32 __user *)(hva + offset_in_page(shmem) + offsetof(struct sbi_sta_struct, sequence)); - steal_ptr = (u64 *)(hva + offset_in_page(shmem) + + steal_ptr = (__le64 __user *)(hva + offset_in_page(shmem) + offsetof(struct sbi_sta_struct, steal)); - if (WARN_ON(get_user(sequence, sequence_ptr))) + if (WARN_ON(get_user(sequence_le, sequence_ptr))) return; - sequence = le32_to_cpu(sequence); + sequence = le32_to_cpu(sequence_le); sequence += 1; if (WARN_ON(put_user(cpu_to_le32(sequence), sequence_ptr))) return; - if (!WARN_ON(get_user(steal, steal_ptr))) { - steal = le64_to_cpu(steal); + if (!WARN_ON(get_user(steal_le, steal_ptr))) { + steal = le64_to_cpu(steal_le); vcpu->arch.sta.last_steal = READ_ONCE(current->sched_info.run_delay); steal += vcpu->arch.sta.last_steal - last_steal; WARN_ON(put_user(cpu_to_le64(steal), steal_ptr)); diff --git a/arch/riscv/lib/csum.c b/arch/riscv/lib/csum.c index af3df5274ccb..74af3ab520b6 100644 --- a/arch/riscv/lib/csum.c +++ b/arch/riscv/lib/csum.c @@ -53,7 +53,7 @@ __sum16 csum_ipv6_magic(const struct in6_addr *saddr, * support, so nop when Zbb is available and jump when Zbb is * not available. */ - asm_volatile_goto(ALTERNATIVE("j %l[no_zbb]", "nop", 0, + asm goto(ALTERNATIVE("j %l[no_zbb]", "nop", 0, RISCV_ISA_EXT_ZBB, 1) : : @@ -170,7 +170,7 @@ do_csum_with_alignment(const unsigned char *buff, int len) * support, so nop when Zbb is available and jump when Zbb is * not available. */ - asm_volatile_goto(ALTERNATIVE("j %l[no_zbb]", "nop", 0, + asm goto(ALTERNATIVE("j %l[no_zbb]", "nop", 0, RISCV_ISA_EXT_ZBB, 1) : : @@ -178,7 +178,7 @@ do_csum_with_alignment(const unsigned char *buff, int len) : no_zbb); #ifdef CONFIG_32BIT - asm_volatile_goto(".option push \n\ + asm_goto_output(".option push \n\ .option arch,+zbb \n\ rori %[fold_temp], %[csum], 16 \n\ andi %[offset], %[offset], 1 \n\ @@ -193,7 +193,7 @@ do_csum_with_alignment(const unsigned char *buff, int len) return (unsigned short)csum; #else /* !CONFIG_32BIT */ - asm_volatile_goto(".option push \n\ + asm_goto_output(".option push \n\ .option arch,+zbb \n\ rori %[fold_temp], %[csum], 32 \n\ add %[csum], %[fold_temp], %[csum] \n\ @@ -257,7 +257,7 @@ do_csum_no_alignment(const unsigned char *buff, int len) * support, so nop when Zbb is available and jump when Zbb is * not available. */ - asm_volatile_goto(ALTERNATIVE("j %l[no_zbb]", "nop", 0, + asm goto(ALTERNATIVE("j %l[no_zbb]", "nop", 0, RISCV_ISA_EXT_ZBB, 1) : : diff --git a/arch/riscv/mm/hugetlbpage.c b/arch/riscv/mm/hugetlbpage.c index 431596c0e20e..5ef2a6891158 100644 --- a/arch/riscv/mm/hugetlbpage.c +++ b/arch/riscv/mm/hugetlbpage.c @@ -125,6 +125,26 @@ pte_t *huge_pte_offset(struct mm_struct *mm, return pte; } +unsigned long hugetlb_mask_last_page(struct hstate *h) +{ + unsigned long hp_size = huge_page_size(h); + + switch (hp_size) { +#ifndef __PAGETABLE_PMD_FOLDED + case PUD_SIZE: + return P4D_SIZE - PUD_SIZE; +#endif + case PMD_SIZE: + return PUD_SIZE - PMD_SIZE; + case napot_cont_size(NAPOT_CONT64KB_ORDER): + return PMD_SIZE - napot_cont_size(NAPOT_CONT64KB_ORDER); + default: + break; + } + + return 0UL; +} + static pte_t get_clear_contig(struct mm_struct *mm, unsigned long addr, pte_t *ptep, @@ -177,13 +197,36 @@ pte_t arch_make_huge_pte(pte_t entry, unsigned int shift, vm_flags_t flags) return entry; } +static void clear_flush(struct mm_struct *mm, + unsigned long addr, + pte_t *ptep, + unsigned long pgsize, + unsigned long ncontig) +{ + struct vm_area_struct vma = TLB_FLUSH_VMA(mm, 0); + unsigned long i, saddr = addr; + + for (i = 0; i < ncontig; i++, addr += pgsize, ptep++) + ptep_get_and_clear(mm, addr, ptep); + + flush_tlb_range(&vma, saddr, addr); +} + +/* + * When dealing with NAPOT mappings, the privileged specification indicates that + * "if an update needs to be made, the OS generally should first mark all of the + * PTEs invalid, then issue SFENCE.VMA instruction(s) covering all 4 KiB regions + * within the range, [...] then update the PTE(s), as described in Section + * 4.2.1.". That's the equivalent of the Break-Before-Make approach used by + * arm64. + */ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte, unsigned long sz) { - unsigned long hugepage_shift; + unsigned long hugepage_shift, pgsize; int i, pte_num; if (sz >= PGDIR_SIZE) @@ -198,7 +241,22 @@ void set_huge_pte_at(struct mm_struct *mm, hugepage_shift = PAGE_SHIFT; pte_num = sz >> hugepage_shift; - for (i = 0; i < pte_num; i++, ptep++, addr += (1 << hugepage_shift)) + pgsize = 1 << hugepage_shift; + + if (!pte_present(pte)) { + for (i = 0; i < pte_num; i++, ptep++, addr += pgsize) + set_ptes(mm, addr, ptep, pte, 1); + return; + } + + if (!pte_napot(pte)) { + set_ptes(mm, addr, ptep, pte, 1); + return; + } + + clear_flush(mm, addr, ptep, pgsize, pte_num); + + for (i = 0; i < pte_num; i++, ptep++, addr += pgsize) set_pte_at(mm, addr, ptep, pte); } @@ -306,7 +364,7 @@ void huge_pte_clear(struct mm_struct *mm, pte_clear(mm, addr, ptep); } -static __init bool is_napot_size(unsigned long size) +static bool is_napot_size(unsigned long size) { unsigned long order; @@ -334,7 +392,7 @@ arch_initcall(napot_hugetlbpages_init); #else -static __init bool is_napot_size(unsigned long size) +static bool is_napot_size(unsigned long size) { return false; } @@ -351,7 +409,7 @@ int pmd_huge(pmd_t pmd) return pmd_leaf(pmd); } -bool __init arch_hugetlb_valid_size(unsigned long size) +static bool __hugetlb_valid_size(unsigned long size) { if (size == HPAGE_SIZE) return true; @@ -363,6 +421,18 @@ bool __init arch_hugetlb_valid_size(unsigned long size) return false; } +bool __init arch_hugetlb_valid_size(unsigned long size) +{ + return __hugetlb_valid_size(size); +} + +#ifdef CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION +bool arch_hugetlb_migration_supported(struct hstate *h) +{ + return __hugetlb_valid_size(huge_page_size(h)); +} +#endif + #ifdef CONFIG_CONTIG_ALLOC static __init int gigantic_pages_init(void) { diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c index 32cad6a65ccd..fa34cf55037b 100644 --- a/arch/riscv/mm/init.c +++ b/arch/riscv/mm/init.c @@ -1385,6 +1385,10 @@ void __init misc_mem_init(void) early_memtest(min_low_pfn << PAGE_SHIFT, max_low_pfn << PAGE_SHIFT); arch_numa_init(); sparse_init(); +#ifdef CONFIG_SPARSEMEM_VMEMMAP + /* The entire VMEMMAP region has been populated. Flush TLB for this region */ + local_flush_tlb_kernel_range(VMEMMAP_START, VMEMMAP_END); +#endif zone_sizes_init(); arch_reserve_crashkernel(); memblock_dump_all(); diff --git a/arch/riscv/mm/tlbflush.c b/arch/riscv/mm/tlbflush.c index 8d12b26f5ac3..893566e004b7 100644 --- a/arch/riscv/mm/tlbflush.c +++ b/arch/riscv/mm/tlbflush.c @@ -66,9 +66,10 @@ static inline void local_flush_tlb_range_asid(unsigned long start, local_flush_tlb_range_threshold_asid(start, size, stride, asid); } +/* Flush a range of kernel pages without broadcasting */ void local_flush_tlb_kernel_range(unsigned long start, unsigned long end) { - local_flush_tlb_range_asid(start, end, PAGE_SIZE, FLUSH_TLB_NO_ASID); + local_flush_tlb_range_asid(start, end - start, PAGE_SIZE, FLUSH_TLB_NO_ASID); } static void __ipi_flush_tlb_all(void *info) @@ -233,4 +234,5 @@ void arch_tlbbatch_flush(struct arch_tlbflush_unmap_batch *batch) { __flush_tlb_range(&batch->cpumask, FLUSH_TLB_NO_ASID, 0, FLUSH_TLB_MAX_SIZE, PAGE_SIZE); + cpumask_clear(&batch->cpumask); } diff --git a/arch/riscv/net/bpf_jit_comp64.c b/arch/riscv/net/bpf_jit_comp64.c index 58dc64dd94a8..719a97e7edb2 100644 --- a/arch/riscv/net/bpf_jit_comp64.c +++ b/arch/riscv/net/bpf_jit_comp64.c @@ -795,6 +795,7 @@ static int __arch_prepare_bpf_trampoline(struct bpf_tramp_image *im, struct bpf_tramp_links *fentry = &tlinks[BPF_TRAMP_FENTRY]; struct bpf_tramp_links *fexit = &tlinks[BPF_TRAMP_FEXIT]; struct bpf_tramp_links *fmod_ret = &tlinks[BPF_TRAMP_MODIFY_RETURN]; + bool is_struct_ops = flags & BPF_TRAMP_F_INDIRECT; void *orig_call = func_addr; bool save_ret; u32 insn; @@ -878,7 +879,7 @@ static int __arch_prepare_bpf_trampoline(struct bpf_tramp_image *im, stack_size = round_up(stack_size, 16); - if (func_addr) { + if (!is_struct_ops) { /* For the trampoline called from function entry, * the frame of traced function and the frame of * trampoline need to be considered. @@ -998,7 +999,7 @@ static int __arch_prepare_bpf_trampoline(struct bpf_tramp_image *im, emit_ld(RV_REG_S1, -sreg_off, RV_REG_FP, ctx); - if (func_addr) { + if (!is_struct_ops) { /* trampoline called from function entry */ emit_ld(RV_REG_T0, stack_size - 8, RV_REG_SP, ctx); emit_ld(RV_REG_FP, stack_size - 16, RV_REG_SP, ctx); diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index fe565f3a3a91..2dc722fb31b4 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -127,6 +127,7 @@ config S390 select ARCH_WANT_DEFAULT_BPF_JIT select ARCH_WANT_IPC_PARSE_VERSION select ARCH_WANT_KERNEL_PMD_MKWRITE + select ARCH_WANT_LD_ORPHAN_WARN select ARCH_WANT_OPTIMIZE_HUGETLB_VMEMMAP select BUILDTIME_TABLE_SORT select CLONE_BACKWARDS2 @@ -448,7 +449,7 @@ config COMPAT select COMPAT_OLD_SIGACTION select HAVE_UID16 depends on MULTIUSER - depends on !CC_IS_CLANG + depends on !CC_IS_CLANG && !LD_IS_LLD help Select this option if you want to enable your system kernel to handle system-calls from ELF binaries for 31 bit ESA. This option @@ -582,14 +583,23 @@ config RELOCATABLE help This builds a kernel image that retains relocation information so it can be loaded at an arbitrary address. - The kernel is linked as a position-independent executable (PIE) - and contains dynamic relocations which are processed early in the - bootup process. The relocations make the kernel image about 15% larger (compressed 10%), but are discarded at runtime. Note: this option exists only for documentation purposes, please do not remove it. +config PIE_BUILD + def_bool CC_IS_CLANG && !$(cc-option,-munaligned-symbols) + help + If the compiler is unable to generate code that can manage unaligned + symbols, the kernel is linked as a position-independent executable + (PIE) and includes dynamic relocations that are processed early + during bootup. + + For kpatch functionality, it is recommended to build the kernel + without the PIE_BUILD option. PIE_BUILD is only enabled when the + compiler lacks proper support for handling unaligned symbols. + config RANDOMIZE_BASE bool "Randomize the address of the kernel image (KASLR)" default y diff --git a/arch/s390/Makefile b/arch/s390/Makefile index 73873e451686..2a58e1864931 100644 --- a/arch/s390/Makefile +++ b/arch/s390/Makefile @@ -14,8 +14,14 @@ KBUILD_AFLAGS_MODULE += -fPIC KBUILD_CFLAGS_MODULE += -fPIC KBUILD_AFLAGS += -m64 KBUILD_CFLAGS += -m64 +ifdef CONFIG_PIE_BUILD KBUILD_CFLAGS += -fPIE -LDFLAGS_vmlinux := -pie +LDFLAGS_vmlinux := -pie -z notext +else +KBUILD_CFLAGS += $(call cc-option,-munaligned-symbols,) +LDFLAGS_vmlinux := --emit-relocs --discard-none +extra_tools := relocs +endif aflags_dwarf := -Wa,-gdwarf-2 KBUILD_AFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -D__ASSEMBLY__ ifndef CONFIG_AS_IS_LLVM @@ -143,7 +149,7 @@ archheaders: archprepare: $(Q)$(MAKE) $(build)=$(syscalls) kapi - $(Q)$(MAKE) $(build)=$(tools) kapi + $(Q)$(MAKE) $(build)=$(tools) kapi $(extra_tools) ifeq ($(KBUILD_EXTMOD),) # We need to generate vdso-offsets.h before compiling certain files in kernel/. # In order to do that, we should use the archprepare target, but we can't since diff --git a/arch/s390/boot/.gitignore b/arch/s390/boot/.gitignore index f56591bc0897..f5ef099e2fd3 100644 --- a/arch/s390/boot/.gitignore +++ b/arch/s390/boot/.gitignore @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0-only image bzImage +relocs.S section_cmp.* vmlinux vmlinux.lds diff --git a/arch/s390/boot/Makefile b/arch/s390/boot/Makefile index c7c81e5f9218..294f08a8811a 100644 --- a/arch/s390/boot/Makefile +++ b/arch/s390/boot/Makefile @@ -37,7 +37,8 @@ CFLAGS_sclp_early_core.o += -I$(srctree)/drivers/s390/char obj-y := head.o als.o startup.o physmem_info.o ipl_parm.o ipl_report.o vmem.o obj-y += string.o ebcdic.o sclp_early_core.o mem.o ipl_vmparm.o cmdline.o -obj-y += version.o pgm_check_info.o ctype.o ipl_data.o machine_kexec_reloc.o +obj-y += version.o pgm_check_info.o ctype.o ipl_data.o +obj-y += $(if $(CONFIG_PIE_BUILD),machine_kexec_reloc.o,relocs.o) obj-$(findstring y, $(CONFIG_PROTECTED_VIRTUALIZATION_GUEST) $(CONFIG_PGSTE)) += uv.o obj-$(CONFIG_RANDOMIZE_BASE) += kaslr.o obj-y += $(if $(CONFIG_KERNEL_UNCOMPRESSED),,decompressor.o) info.o @@ -48,6 +49,9 @@ targets := bzImage section_cmp.boot.data section_cmp.boot.preserved.data $(obj-y targets += vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 targets += vmlinux.bin.xz vmlinux.bin.lzma vmlinux.bin.lzo vmlinux.bin.lz4 targets += vmlinux.bin.zst info.bin syms.bin vmlinux.syms $(obj-all) +ifndef CONFIG_PIE_BUILD +targets += relocs.S +endif OBJECTS := $(addprefix $(obj)/,$(obj-y)) OBJECTS_ALL := $(addprefix $(obj)/,$(obj-all)) @@ -56,9 +60,9 @@ clean-files += vmlinux.map quiet_cmd_section_cmp = SECTCMP $* define cmd_section_cmp - s1=`$(OBJDUMP) -t -j "$*" "$<" | sort | \ + s1=`$(OBJDUMP) -t "$<" | grep "\s$*\s\+" | sort | \ sed -n "/0000000000000000/! s/.*\s$*\s\+//p" | sha256sum`; \ - s2=`$(OBJDUMP) -t -j "$*" "$(word 2,$^)" | sort | \ + s2=`$(OBJDUMP) -t "$(word 2,$^)" | grep "\s$*\s\+" | sort | \ sed -n "/0000000000000000/! s/.*\s$*\s\+//p" | sha256sum`; \ if [ "$$s1" != "$$s2" ]; then \ echo "error: section $* differs between $< and $(word 2,$^)" >&2; \ @@ -73,11 +77,12 @@ $(obj)/bzImage: $(obj)/vmlinux $(obj)/section_cmp.boot.data $(obj)/section_cmp.b $(obj)/section_cmp%: vmlinux $(obj)/vmlinux FORCE $(call if_changed,section_cmp) -LDFLAGS_vmlinux := --oformat $(LD_BFD) -e startup $(if $(CONFIG_VMLINUX_MAP),-Map=$(obj)/vmlinux.map) --build-id=sha1 -T +LDFLAGS_vmlinux-$(CONFIG_LD_ORPHAN_WARN) := --orphan-handling=$(CONFIG_LD_ORPHAN_WARN_LEVEL) +LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y) --oformat $(LD_BFD) -e startup $(if $(CONFIG_VMLINUX_MAP),-Map=$(obj)/vmlinux.map) --build-id=sha1 -T $(obj)/vmlinux: $(obj)/vmlinux.lds $(OBJECTS_ALL) FORCE $(call if_changed,ld) -LDFLAGS_vmlinux.syms := --oformat $(LD_BFD) -e startup -T +LDFLAGS_vmlinux.syms := $(LDFLAGS_vmlinux-y) --oformat $(LD_BFD) -e startup -T $(obj)/vmlinux.syms: $(obj)/vmlinux.lds $(OBJECTS) FORCE $(call if_changed,ld) @@ -93,7 +98,7 @@ OBJCOPYFLAGS_syms.o := -I binary -O elf64-s390 -B s390:64-bit --rename-section . $(obj)/syms.o: $(obj)/syms.bin FORCE $(call if_changed,objcopy) -OBJCOPYFLAGS_info.bin := -O binary --only-section=.vmlinux.info --set-section-flags .vmlinux.info=load +OBJCOPYFLAGS_info.bin := -O binary --only-section=.vmlinux.info --set-section-flags .vmlinux.info=alloc,load $(obj)/info.bin: vmlinux FORCE $(call if_changed,objcopy) @@ -105,6 +110,14 @@ OBJCOPYFLAGS_vmlinux.bin := -O binary --remove-section=.comment --remove-section $(obj)/vmlinux.bin: vmlinux FORCE $(call if_changed,objcopy) +ifndef CONFIG_PIE_BUILD +CMD_RELOCS=arch/s390/tools/relocs +quiet_cmd_relocs = RELOCS $@ + cmd_relocs = $(CMD_RELOCS) $< > $@ +$(obj)/relocs.S: vmlinux FORCE + $(call if_changed,relocs) +endif + suffix-$(CONFIG_KERNEL_GZIP) := .gz suffix-$(CONFIG_KERNEL_BZIP2) := .bz2 suffix-$(CONFIG_KERNEL_LZ4) := .lz4 diff --git a/arch/s390/boot/boot.h b/arch/s390/boot/boot.h index 222c6886acf6..567d60f78bbc 100644 --- a/arch/s390/boot/boot.h +++ b/arch/s390/boot/boot.h @@ -25,9 +25,14 @@ struct vmlinux_info { unsigned long bootdata_size; unsigned long bootdata_preserved_off; unsigned long bootdata_preserved_size; +#ifdef CONFIG_PIE_BUILD unsigned long dynsym_start; unsigned long rela_dyn_start; unsigned long rela_dyn_end; +#else + unsigned long got_start; + unsigned long got_end; +#endif unsigned long amode31_size; unsigned long init_mm_off; unsigned long swapper_pg_dir_off; @@ -83,6 +88,7 @@ extern unsigned long vmalloc_size; extern int vmalloc_size_set; extern char __boot_data_start[], __boot_data_end[]; extern char __boot_data_preserved_start[], __boot_data_preserved_end[]; +extern char __vmlinux_relocs_64_start[], __vmlinux_relocs_64_end[]; extern char _decompressor_syms_start[], _decompressor_syms_end[]; extern char _stack_start[], _stack_end[]; extern char _end[], _decompressor_end[]; diff --git a/arch/s390/boot/startup.c b/arch/s390/boot/startup.c index 9cc76e631759..6cf89314209a 100644 --- a/arch/s390/boot/startup.c +++ b/arch/s390/boot/startup.c @@ -141,7 +141,8 @@ static void copy_bootdata(void) memcpy((void *)vmlinux.bootdata_preserved_off, __boot_data_preserved_start, vmlinux.bootdata_preserved_size); } -static void handle_relocs(unsigned long offset) +#ifdef CONFIG_PIE_BUILD +static void kaslr_adjust_relocs(unsigned long min_addr, unsigned long max_addr, unsigned long offset) { Elf64_Rela *rela_start, *rela_end, *rela; int r_type, r_sym, rc; @@ -172,6 +173,54 @@ static void handle_relocs(unsigned long offset) } } +static void kaslr_adjust_got(unsigned long offset) {} +static void rescue_relocs(void) {} +static void free_relocs(void) {} +#else +static int *vmlinux_relocs_64_start; +static int *vmlinux_relocs_64_end; + +static void rescue_relocs(void) +{ + unsigned long size = __vmlinux_relocs_64_end - __vmlinux_relocs_64_start; + + vmlinux_relocs_64_start = (void *)physmem_alloc_top_down(RR_RELOC, size, 0); + vmlinux_relocs_64_end = (void *)vmlinux_relocs_64_start + size; + memmove(vmlinux_relocs_64_start, __vmlinux_relocs_64_start, size); +} + +static void free_relocs(void) +{ + physmem_free(RR_RELOC); +} + +static void kaslr_adjust_relocs(unsigned long min_addr, unsigned long max_addr, unsigned long offset) +{ + int *reloc; + long loc; + + /* Adjust R_390_64 relocations */ + for (reloc = vmlinux_relocs_64_start; reloc < vmlinux_relocs_64_end; reloc++) { + loc = (long)*reloc + offset; + if (loc < min_addr || loc > max_addr) + error("64-bit relocation outside of kernel!\n"); + *(u64 *)loc += offset; + } +} + +static void kaslr_adjust_got(unsigned long offset) +{ + u64 *entry; + + /* + * Even without -fPIE, Clang still uses a global offset table for some + * reason. Adjust the GOT entries. + */ + for (entry = (u64 *)vmlinux.got_start; entry < (u64 *)vmlinux.got_end; entry++) + *entry += offset; +} +#endif + /* * Merge information from several sources into a single ident_map_size value. * "ident_map_size" represents the upper limit of physical memory we may ever @@ -299,14 +348,19 @@ static void setup_vmalloc_size(void) vmalloc_size = max(size, vmalloc_size); } -static void offset_vmlinux_info(unsigned long offset) +static void kaslr_adjust_vmlinux_info(unsigned long offset) { *(unsigned long *)(&vmlinux.entry) += offset; vmlinux.bootdata_off += offset; vmlinux.bootdata_preserved_off += offset; +#ifdef CONFIG_PIE_BUILD vmlinux.rela_dyn_start += offset; vmlinux.rela_dyn_end += offset; vmlinux.dynsym_start += offset; +#else + vmlinux.got_start += offset; + vmlinux.got_end += offset; +#endif vmlinux.init_mm_off += offset; vmlinux.swapper_pg_dir_off += offset; vmlinux.invalid_pg_dir_off += offset; @@ -361,6 +415,7 @@ void startup_kernel(void) detect_physmem_online_ranges(max_physmem_end); save_ipl_cert_comp_list(); rescue_initrd(safe_addr, ident_map_size); + rescue_relocs(); if (kaslr_enabled()) { vmlinux_lma = randomize_within_range(vmlinux.image_size + vmlinux.bss_size, @@ -368,7 +423,7 @@ void startup_kernel(void) ident_map_size); if (vmlinux_lma) { __kaslr_offset = vmlinux_lma - vmlinux.default_lma; - offset_vmlinux_info(__kaslr_offset); + kaslr_adjust_vmlinux_info(__kaslr_offset); } } vmlinux_lma = vmlinux_lma ?: vmlinux.default_lma; @@ -393,18 +448,20 @@ void startup_kernel(void) /* * The order of the following operations is important: * - * - handle_relocs() must follow clear_bss_section() to establish static - * memory references to data in .bss to be used by setup_vmem() + * - kaslr_adjust_relocs() must follow clear_bss_section() to establish + * static memory references to data in .bss to be used by setup_vmem() * (i.e init_mm.pgd) * - * - setup_vmem() must follow handle_relocs() to be able using + * - setup_vmem() must follow kaslr_adjust_relocs() to be able using * static memory references to data in .bss (i.e init_mm.pgd) * - * - copy_bootdata() must follow setup_vmem() to propagate changes to - * bootdata made by setup_vmem() + * - copy_bootdata() must follow setup_vmem() to propagate changes + * to bootdata made by setup_vmem() */ clear_bss_section(vmlinux_lma); - handle_relocs(__kaslr_offset); + kaslr_adjust_relocs(vmlinux_lma, vmlinux_lma + vmlinux.image_size, __kaslr_offset); + kaslr_adjust_got(__kaslr_offset); + free_relocs(); setup_vmem(asce_limit); copy_bootdata(); diff --git a/arch/s390/boot/vmlinux.lds.S b/arch/s390/boot/vmlinux.lds.S index 389df0e0d9e5..3d7ea585ab99 100644 --- a/arch/s390/boot/vmlinux.lds.S +++ b/arch/s390/boot/vmlinux.lds.S @@ -31,6 +31,7 @@ SECTIONS _text = .; /* Text */ *(.text) *(.text.*) + INIT_TEXT _etext = . ; } .rodata : { @@ -39,6 +40,9 @@ SECTIONS *(.rodata.*) _erodata = . ; } + .got : { + *(.got) + } NOTES .data : { _data = . ; @@ -106,6 +110,24 @@ SECTIONS _compressed_end = .; } +#ifndef CONFIG_PIE_BUILD + /* + * When the kernel is built with CONFIG_KERNEL_UNCOMPRESSED, the entire + * uncompressed vmlinux.bin is positioned in the bzImage decompressor + * image at the default kernel LMA of 0x100000, enabling it to be + * executed in-place. However, the size of .vmlinux.relocs could be + * large enough to cause an overlap with the uncompressed kernel at the + * address 0x100000. To address this issue, .vmlinux.relocs is + * positioned after the .rodata.compressed. + */ + . = ALIGN(4); + .vmlinux.relocs : { + __vmlinux_relocs_64_start = .; + *(.vmlinux.relocs_64) + __vmlinux_relocs_64_end = .; + } +#endif + #define SB_TRAILER_SIZE 32 /* Trailer needed for Secure Boot */ . += SB_TRAILER_SIZE; /* make sure .sb.trailer does not overwrite the previous section */ @@ -118,8 +140,34 @@ SECTIONS } _end = .; + DWARF_DEBUG + ELF_DETAILS + + /* + * Make sure that the .got.plt is either completely empty or it + * contains only the three reserved double words. + */ + .got.plt : { + *(.got.plt) + } + ASSERT(SIZEOF(.got.plt) == 0 || SIZEOF(.got.plt) == 0x18, "Unexpected GOT/PLT entries detected!") + + /* + * Sections that should stay zero sized, which is safer to + * explicitly check instead of blindly discarding. + */ + .plt : { + *(.plt) *(.plt.*) *(.iplt) *(.igot .igot.plt) + } + ASSERT(SIZEOF(.plt) == 0, "Unexpected run-time procedure linkages detected!") + .rela.dyn : { + *(.rela.*) *(.rela_*) + } + ASSERT(SIZEOF(.rela.dyn) == 0, "Unexpected run-time relocations (.rela) detected!") + /* Sections to be discarded */ /DISCARD/ : { + COMMON_DISCARDS *(.eh_frame) *(__ex_table) *(*__ksymtab*) diff --git a/arch/s390/configs/compat.config b/arch/s390/configs/compat.config new file mode 100644 index 000000000000..6fd051453ae8 --- /dev/null +++ b/arch/s390/configs/compat.config @@ -0,0 +1,3 @@ +# Help: Enable compat support +CONFIG_COMPAT=y +CONFIG_COMPAT_32BIT_TIME=y diff --git a/arch/s390/configs/debug_defconfig b/arch/s390/configs/debug_defconfig index cae2dd34fbb4..4032e6e136ac 100644 --- a/arch/s390/configs/debug_defconfig +++ b/arch/s390/configs/debug_defconfig @@ -118,7 +118,6 @@ CONFIG_UNIX=y CONFIG_UNIX_DIAG=m CONFIG_XFRM_USER=m CONFIG_NET_KEY=m -CONFIG_SMC=m CONFIG_SMC_DIAG=m CONFIG_INET=y CONFIG_IP_MULTICAST=y @@ -374,6 +373,7 @@ CONFIG_NET_ACT_POLICE=m CONFIG_NET_ACT_GACT=m CONFIG_GACT_PROB=y CONFIG_NET_ACT_MIRRED=m +CONFIG_NET_ACT_IPT=m CONFIG_NET_ACT_NAT=m CONFIG_NET_ACT_PEDIT=m CONFIG_NET_ACT_SIMP=m @@ -436,9 +436,6 @@ CONFIG_SCSI_DH_ALUA=m CONFIG_MD=y CONFIG_BLK_DEV_MD=y # CONFIG_MD_BITMAP_FILE is not set -CONFIG_MD_LINEAR=m -CONFIG_MD_MULTIPATH=m -CONFIG_MD_FAULTY=m CONFIG_MD_CLUSTER=m CONFIG_BCACHE=m CONFIG_BLK_DEV_DM=y @@ -637,7 +634,6 @@ CONFIG_FUSE_FS=y CONFIG_CUSE=m CONFIG_VIRTIO_FS=m CONFIG_OVERLAY_FS=m -CONFIG_NETFS_SUPPORT=m CONFIG_NETFS_STATS=y CONFIG_FSCACHE=y CONFIG_CACHEFILES=m @@ -709,7 +705,6 @@ CONFIG_IMA_DEFAULT_HASH_SHA256=y CONFIG_IMA_WRITE_POLICY=y CONFIG_IMA_APPRAISE=y CONFIG_LSM="yama,loadpin,safesetid,integrity,selinux,smack,tomoyo,apparmor" -CONFIG_INIT_STACK_NONE=y CONFIG_BUG_ON_DATA_CORRUPTION=y CONFIG_CRYPTO_USER=m # CONFIG_CRYPTO_MANAGER_DISABLE_TESTS is not set @@ -739,7 +734,6 @@ CONFIG_CRYPTO_TEA=m CONFIG_CRYPTO_TWOFISH=m CONFIG_CRYPTO_ADIANTUM=m CONFIG_CRYPTO_ARC4=m -CONFIG_CRYPTO_CFB=m CONFIG_CRYPTO_HCTR2=m CONFIG_CRYPTO_KEYWRAP=m CONFIG_CRYPTO_LRW=m @@ -830,6 +824,8 @@ CONFIG_TEST_LOCKUP=m CONFIG_DEBUG_PREEMPT=y CONFIG_PROVE_LOCKING=y CONFIG_LOCK_STAT=y +CONFIG_LOCKDEP_BITS=16 +CONFIG_LOCKDEP_CHAINS_BITS=17 CONFIG_DEBUG_ATOMIC_SLEEP=y CONFIG_DEBUG_LOCKING_API_SELFTESTS=y CONFIG_DEBUG_IRQFLAGS=y @@ -886,4 +882,3 @@ CONFIG_ATOMIC64_SELFTEST=y CONFIG_STRING_SELFTEST=y CONFIG_TEST_BITOPS=m CONFIG_TEST_BPF=m -CONFIG_TEST_LIVEPATCH=m diff --git a/arch/s390/configs/defconfig b/arch/s390/configs/defconfig index 42b988873e54..d33f814f78b2 100644 --- a/arch/s390/configs/defconfig +++ b/arch/s390/configs/defconfig @@ -109,7 +109,6 @@ CONFIG_UNIX=y CONFIG_UNIX_DIAG=m CONFIG_XFRM_USER=m CONFIG_NET_KEY=m -CONFIG_SMC=m CONFIG_SMC_DIAG=m CONFIG_INET=y CONFIG_IP_MULTICAST=y @@ -364,6 +363,7 @@ CONFIG_NET_ACT_POLICE=m CONFIG_NET_ACT_GACT=m CONFIG_GACT_PROB=y CONFIG_NET_ACT_MIRRED=m +CONFIG_NET_ACT_IPT=m CONFIG_NET_ACT_NAT=m CONFIG_NET_ACT_PEDIT=m CONFIG_NET_ACT_SIMP=m @@ -426,9 +426,6 @@ CONFIG_SCSI_DH_ALUA=m CONFIG_MD=y CONFIG_BLK_DEV_MD=y # CONFIG_MD_BITMAP_FILE is not set -CONFIG_MD_LINEAR=m -CONFIG_MD_MULTIPATH=m -CONFIG_MD_FAULTY=m CONFIG_MD_CLUSTER=m CONFIG_BCACHE=m CONFIG_BLK_DEV_DM=y @@ -622,7 +619,6 @@ CONFIG_FUSE_FS=y CONFIG_CUSE=m CONFIG_VIRTIO_FS=m CONFIG_OVERLAY_FS=m -CONFIG_NETFS_SUPPORT=m CONFIG_NETFS_STATS=y CONFIG_FSCACHE=y CONFIG_CACHEFILES=m @@ -693,7 +689,6 @@ CONFIG_IMA_DEFAULT_HASH_SHA256=y CONFIG_IMA_WRITE_POLICY=y CONFIG_IMA_APPRAISE=y CONFIG_LSM="yama,loadpin,safesetid,integrity,selinux,smack,tomoyo,apparmor" -CONFIG_INIT_STACK_NONE=y CONFIG_BUG_ON_DATA_CORRUPTION=y CONFIG_CRYPTO_FIPS=y CONFIG_CRYPTO_USER=m @@ -724,11 +719,9 @@ CONFIG_CRYPTO_TEA=m CONFIG_CRYPTO_TWOFISH=m CONFIG_CRYPTO_ADIANTUM=m CONFIG_CRYPTO_ARC4=m -CONFIG_CRYPTO_CFB=m CONFIG_CRYPTO_HCTR2=m CONFIG_CRYPTO_KEYWRAP=m CONFIG_CRYPTO_LRW=m -CONFIG_CRYPTO_OFB=m CONFIG_CRYPTO_PCBC=m CONFIG_CRYPTO_AEGIS128=m CONFIG_CRYPTO_CHACHA20POLY1305=m @@ -815,4 +808,3 @@ CONFIG_KPROBES_SANITY_TEST=m CONFIG_PERCPU_TEST=m CONFIG_ATOMIC64_SELFTEST=y CONFIG_TEST_BPF=m -CONFIG_TEST_LIVEPATCH=m diff --git a/arch/s390/configs/zfcpdump_defconfig b/arch/s390/configs/zfcpdump_defconfig index 30d2a1687665..c51f3ec4eb28 100644 --- a/arch/s390/configs/zfcpdump_defconfig +++ b/arch/s390/configs/zfcpdump_defconfig @@ -8,6 +8,7 @@ CONFIG_BPF_SYSCALL=y # CONFIG_NET_NS is not set CONFIG_BLK_DEV_INITRD=y CONFIG_CC_OPTIMIZE_FOR_SIZE=y +CONFIG_KEXEC=y CONFIG_CRASH_DUMP=y CONFIG_MARCH_Z13=y CONFIG_NR_CPUS=2 @@ -64,7 +65,6 @@ CONFIG_ZFCP=y # CONFIG_MISC_FILESYSTEMS is not set # CONFIG_NETWORK_FILESYSTEMS is not set CONFIG_LSM="yama,loadpin,safesetid,integrity" -CONFIG_INIT_STACK_NONE=y # CONFIG_ZLIB_DFLTCC is not set CONFIG_XZ_DEC_MICROLZMA=y CONFIG_PRINTK_TIME=y diff --git a/arch/s390/crypto/chacha-glue.c b/arch/s390/crypto/chacha-glue.c index ed9959e6f714..f8b0c52e77a4 100644 --- a/arch/s390/crypto/chacha-glue.c +++ b/arch/s390/crypto/chacha-glue.c @@ -15,14 +15,14 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/sizes.h> -#include <asm/fpu/api.h> +#include <asm/fpu.h> #include "chacha-s390.h" static void chacha20_crypt_s390(u32 *state, u8 *dst, const u8 *src, unsigned int nbytes, const u32 *key, u32 *counter) { - struct kernel_fpu vxstate; + DECLARE_KERNEL_FPU_ONSTACK32(vxstate); kernel_fpu_begin(&vxstate, KERNEL_VXR); chacha20_vx(dst, src, nbytes, key, counter); diff --git a/arch/s390/crypto/chacha-s390.S b/arch/s390/crypto/chacha-s390.S index 37cb63f25b17..63f3102678c0 100644 --- a/arch/s390/crypto/chacha-s390.S +++ b/arch/s390/crypto/chacha-s390.S @@ -8,7 +8,7 @@ #include <linux/linkage.h> #include <asm/nospec-insn.h> -#include <asm/vx-insn.h> +#include <asm/fpu-insn.h> #define SP %r15 #define FRAME (16 * 8 + 4 * 8) diff --git a/arch/s390/crypto/crc32-vx.c b/arch/s390/crypto/crc32-vx.c index 017143e9cef7..74f17c905d12 100644 --- a/arch/s390/crypto/crc32-vx.c +++ b/arch/s390/crypto/crc32-vx.c @@ -13,8 +13,8 @@ #include <linux/cpufeature.h> #include <linux/crc32.h> #include <crypto/internal/hash.h> -#include <asm/fpu/api.h> - +#include <asm/fpu.h> +#include "crc32-vx.h" #define CRC32_BLOCK_SIZE 1 #define CRC32_DIGEST_SIZE 4 @@ -31,11 +31,6 @@ struct crc_desc_ctx { u32 crc; }; -/* Prototypes for functions in assembly files */ -u32 crc32_le_vgfm_16(u32 crc, unsigned char const *buf, size_t size); -u32 crc32_be_vgfm_16(u32 crc, unsigned char const *buf, size_t size); -u32 crc32c_le_vgfm_16(u32 crc, unsigned char const *buf, size_t size); - /* * DEFINE_CRC32_VX() - Define a CRC-32 function using the vector extension * @@ -49,8 +44,8 @@ u32 crc32c_le_vgfm_16(u32 crc, unsigned char const *buf, size_t size); static u32 __pure ___fname(u32 crc, \ unsigned char const *data, size_t datalen) \ { \ - struct kernel_fpu vxstate; \ unsigned long prealign, aligned, remaining; \ + DECLARE_KERNEL_FPU_ONSTACK16(vxstate); \ \ if (datalen < VX_MIN_LEN + VX_ALIGN_MASK) \ return ___crc32_sw(crc, data, datalen); \ diff --git a/arch/s390/crypto/crc32-vx.h b/arch/s390/crypto/crc32-vx.h new file mode 100644 index 000000000000..652c96e1a822 --- /dev/null +++ b/arch/s390/crypto/crc32-vx.h @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef _CRC32_VX_S390_H +#define _CRC32_VX_S390_H + +#include <linux/types.h> + +u32 crc32_be_vgfm_16(u32 crc, unsigned char const *buf, size_t size); +u32 crc32_le_vgfm_16(u32 crc, unsigned char const *buf, size_t size); +u32 crc32c_le_vgfm_16(u32 crc, unsigned char const *buf, size_t size); + +#endif /* _CRC32_VX_S390_H */ diff --git a/arch/s390/crypto/crc32be-vx.S b/arch/s390/crypto/crc32be-vx.c index 34ee47926891..fed7c9c70d05 100644 --- a/arch/s390/crypto/crc32be-vx.S +++ b/arch/s390/crypto/crc32be-vx.c @@ -12,20 +12,17 @@ * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com> */ -#include <linux/linkage.h> -#include <asm/nospec-insn.h> -#include <asm/vx-insn.h> +#include <linux/types.h> +#include <asm/fpu.h> +#include "crc32-vx.h" /* Vector register range containing CRC-32 constants */ -#define CONST_R1R2 %v9 -#define CONST_R3R4 %v10 -#define CONST_R5 %v11 -#define CONST_R6 %v12 -#define CONST_RU_POLY %v13 -#define CONST_CRC_POLY %v14 - - .data - .balign 8 +#define CONST_R1R2 9 +#define CONST_R3R4 10 +#define CONST_R5 11 +#define CONST_R6 12 +#define CONST_RU_POLY 13 +#define CONST_CRC_POLY 14 /* * The CRC-32 constant block contains reduction constants to fold and @@ -58,105 +55,74 @@ * P'(x) = 0xEDB88320 */ -SYM_DATA_START_LOCAL(constants_CRC_32_BE) - .quad 0x08833794c, 0x0e6228b11 # R1, R2 - .quad 0x0c5b9cd4c, 0x0e8a45605 # R3, R4 - .quad 0x0f200aa66, 1 << 32 # R5, x32 - .quad 0x0490d678d, 1 # R6, 1 - .quad 0x104d101df, 0 # u - .quad 0x104C11DB7, 0 # P(x) -SYM_DATA_END(constants_CRC_32_BE) - - .previous - - GEN_BR_THUNK %r14 - - .text -/* - * The CRC-32 function(s) use these calling conventions: - * - * Parameters: - * - * %r2: Initial CRC value, typically ~0; and final CRC (return) value. - * %r3: Input buffer pointer, performance might be improved if the - * buffer is on a doubleword boundary. - * %r4: Length of the buffer, must be 64 bytes or greater. +static unsigned long constants_CRC_32_BE[] = { + 0x08833794c, 0x0e6228b11, /* R1, R2 */ + 0x0c5b9cd4c, 0x0e8a45605, /* R3, R4 */ + 0x0f200aa66, 1UL << 32, /* R5, x32 */ + 0x0490d678d, 1, /* R6, 1 */ + 0x104d101df, 0, /* u */ + 0x104C11DB7, 0, /* P(x) */ +}; + +/** + * crc32_be_vgfm_16 - Compute CRC-32 (BE variant) with vector registers + * @crc: Initial CRC value, typically ~0. + * @buf: Input buffer pointer, performance might be improved if the + * buffer is on a doubleword boundary. + * @size: Size of the buffer, must be 64 bytes or greater. * * Register usage: - * - * %r5: CRC-32 constant pool base pointer. * V0: Initial CRC value and intermediate constants and results. * V1..V4: Data for CRC computation. * V5..V8: Next data chunks that are fetched from the input buffer. - * * V9..V14: CRC-32 constants. */ -SYM_FUNC_START(crc32_be_vgfm_16) +u32 crc32_be_vgfm_16(u32 crc, unsigned char const *buf, size_t size) +{ /* Load CRC-32 constants */ - larl %r5,constants_CRC_32_BE - VLM CONST_R1R2,CONST_CRC_POLY,0,%r5 + fpu_vlm(CONST_R1R2, CONST_CRC_POLY, &constants_CRC_32_BE); + fpu_vzero(0); /* Load the initial CRC value into the leftmost word of V0. */ - VZERO %v0 - VLVGF %v0,%r2,0 + fpu_vlvgf(0, crc, 0); /* Load a 64-byte data chunk and XOR with CRC */ - VLM %v1,%v4,0,%r3 /* 64-bytes into V1..V4 */ - VX %v1,%v0,%v1 /* V1 ^= CRC */ - aghi %r3,64 /* BUF = BUF + 64 */ - aghi %r4,-64 /* LEN = LEN - 64 */ - - /* Check remaining buffer size and jump to proper folding method */ - cghi %r4,64 - jl .Lless_than_64bytes - -.Lfold_64bytes_loop: - /* Load the next 64-byte data chunk into V5 to V8 */ - VLM %v5,%v8,0,%r3 + fpu_vlm(1, 4, buf); + fpu_vx(1, 0, 1); + buf += 64; + size -= 64; + + while (size >= 64) { + /* Load the next 64-byte data chunk into V5 to V8 */ + fpu_vlm(5, 8, buf); + + /* + * Perform a GF(2) multiplication of the doublewords in V1 with + * the reduction constants in V0. The intermediate result is + * then folded (accumulated) with the next data chunk in V5 and + * stored in V1. Repeat this step for the register contents + * in V2, V3, and V4 respectively. + */ + fpu_vgfmag(1, CONST_R1R2, 1, 5); + fpu_vgfmag(2, CONST_R1R2, 2, 6); + fpu_vgfmag(3, CONST_R1R2, 3, 7); + fpu_vgfmag(4, CONST_R1R2, 4, 8); + buf += 64; + size -= 64; + } - /* - * Perform a GF(2) multiplication of the doublewords in V1 with - * the reduction constants in V0. The intermediate result is - * then folded (accumulated) with the next data chunk in V5 and - * stored in V1. Repeat this step for the register contents - * in V2, V3, and V4 respectively. - */ - VGFMAG %v1,CONST_R1R2,%v1,%v5 - VGFMAG %v2,CONST_R1R2,%v2,%v6 - VGFMAG %v3,CONST_R1R2,%v3,%v7 - VGFMAG %v4,CONST_R1R2,%v4,%v8 - - /* Adjust buffer pointer and length for next loop */ - aghi %r3,64 /* BUF = BUF + 64 */ - aghi %r4,-64 /* LEN = LEN - 64 */ - - cghi %r4,64 - jnl .Lfold_64bytes_loop - -.Lless_than_64bytes: /* Fold V1 to V4 into a single 128-bit value in V1 */ - VGFMAG %v1,CONST_R3R4,%v1,%v2 - VGFMAG %v1,CONST_R3R4,%v1,%v3 - VGFMAG %v1,CONST_R3R4,%v1,%v4 - - /* Check whether to continue with 64-bit folding */ - cghi %r4,16 - jl .Lfinal_fold + fpu_vgfmag(1, CONST_R3R4, 1, 2); + fpu_vgfmag(1, CONST_R3R4, 1, 3); + fpu_vgfmag(1, CONST_R3R4, 1, 4); -.Lfold_16bytes_loop: + while (size >= 16) { + fpu_vl(2, buf); + fpu_vgfmag(1, CONST_R3R4, 1, 2); + buf += 16; + size -= 16; + } - VL %v2,0,,%r3 /* Load next data chunk */ - VGFMAG %v1,CONST_R3R4,%v1,%v2 /* Fold next data chunk */ - - /* Adjust buffer pointer and size for folding next data chunk */ - aghi %r3,16 - aghi %r4,-16 - - /* Process remaining data chunks */ - cghi %r4,16 - jnl .Lfold_16bytes_loop - -.Lfinal_fold: /* * The R5 constant is used to fold a 128-bit value into an 96-bit value * that is XORed with the next 96-bit input data chunk. To use a single @@ -164,7 +130,7 @@ SYM_FUNC_START(crc32_be_vgfm_16) * form an intermediate 96-bit value (with appended zeros) which is then * XORed with the intermediate reduction result. */ - VGFMG %v1,CONST_R5,%v1 + fpu_vgfmg(1, CONST_R5, 1); /* * Further reduce the remaining 96-bit value to a 64-bit value using a @@ -173,7 +139,7 @@ SYM_FUNC_START(crc32_be_vgfm_16) * doubleword with R6. The result is a 64-bit value and is subject to * the Barret reduction. */ - VGFMG %v1,CONST_R6,%v1 + fpu_vgfmg(1, CONST_R6, 1); /* * The input values to the Barret reduction are the degree-63 polynomial @@ -194,20 +160,15 @@ SYM_FUNC_START(crc32_be_vgfm_16) */ /* T1(x) = floor( R(x) / x^32 ) GF2MUL u */ - VUPLLF %v2,%v1 - VGFMG %v2,CONST_RU_POLY,%v2 + fpu_vupllf(2, 1); + fpu_vgfmg(2, CONST_RU_POLY, 2); /* * Compute the GF(2) product of the CRC polynomial in VO with T1(x) in * V2 and XOR the intermediate result, T2(x), with the value in V1. * The final result is in the rightmost word of V2. */ - VUPLLF %v2,%v2 - VGFMAG %v2,CONST_CRC_POLY,%v2,%v1 - -.Ldone: - VLGVF %r2,%v2,3 - BR_EX %r14 -SYM_FUNC_END(crc32_be_vgfm_16) - -.previous + fpu_vupllf(2, 2); + fpu_vgfmag(2, CONST_CRC_POLY, 2, 1); + return fpu_vlgvf(2, 3); +} diff --git a/arch/s390/crypto/crc32le-vx.S b/arch/s390/crypto/crc32le-vx.c index 5a819ae09a0b..2f629f394df7 100644 --- a/arch/s390/crypto/crc32le-vx.S +++ b/arch/s390/crypto/crc32le-vx.c @@ -13,20 +13,17 @@ * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com> */ -#include <linux/linkage.h> -#include <asm/nospec-insn.h> -#include <asm/vx-insn.h> +#include <linux/types.h> +#include <asm/fpu.h> +#include "crc32-vx.h" /* Vector register range containing CRC-32 constants */ -#define CONST_PERM_LE2BE %v9 -#define CONST_R2R1 %v10 -#define CONST_R4R3 %v11 -#define CONST_R5 %v12 -#define CONST_RU_POLY %v13 -#define CONST_CRC_POLY %v14 - - .data - .balign 8 +#define CONST_PERM_LE2BE 9 +#define CONST_R2R1 10 +#define CONST_R4R3 11 +#define CONST_R5 12 +#define CONST_RU_POLY 13 +#define CONST_CRC_POLY 14 /* * The CRC-32 constant block contains reduction constants to fold and @@ -59,64 +56,43 @@ * P'(x) = 0x82F63B78 */ -SYM_DATA_START_LOCAL(constants_CRC_32_LE) - .octa 0x0F0E0D0C0B0A09080706050403020100 # BE->LE mask - .quad 0x1c6e41596, 0x154442bd4 # R2, R1 - .quad 0x0ccaa009e, 0x1751997d0 # R4, R3 - .octa 0x163cd6124 # R5 - .octa 0x1F7011641 # u' - .octa 0x1DB710641 # P'(x) << 1 -SYM_DATA_END(constants_CRC_32_LE) - -SYM_DATA_START_LOCAL(constants_CRC_32C_LE) - .octa 0x0F0E0D0C0B0A09080706050403020100 # BE->LE mask - .quad 0x09e4addf8, 0x740eef02 # R2, R1 - .quad 0x14cd00bd6, 0xf20c0dfe # R4, R3 - .octa 0x0dd45aab8 # R5 - .octa 0x0dea713f1 # u' - .octa 0x105ec76f0 # P'(x) << 1 -SYM_DATA_END(constants_CRC_32C_LE) - - .previous - - GEN_BR_THUNK %r14 - - .text - -/* - * The CRC-32 functions use these calling conventions: - * - * Parameters: - * - * %r2: Initial CRC value, typically ~0; and final CRC (return) value. - * %r3: Input buffer pointer, performance might be improved if the - * buffer is on a doubleword boundary. - * %r4: Length of the buffer, must be 64 bytes or greater. +static unsigned long constants_CRC_32_LE[] = { + 0x0f0e0d0c0b0a0908, 0x0706050403020100, /* BE->LE mask */ + 0x1c6e41596, 0x154442bd4, /* R2, R1 */ + 0x0ccaa009e, 0x1751997d0, /* R4, R3 */ + 0x0, 0x163cd6124, /* R5 */ + 0x0, 0x1f7011641, /* u' */ + 0x0, 0x1db710641 /* P'(x) << 1 */ +}; + +static unsigned long constants_CRC_32C_LE[] = { + 0x0f0e0d0c0b0a0908, 0x0706050403020100, /* BE->LE mask */ + 0x09e4addf8, 0x740eef02, /* R2, R1 */ + 0x14cd00bd6, 0xf20c0dfe, /* R4, R3 */ + 0x0, 0x0dd45aab8, /* R5 */ + 0x0, 0x0dea713f1, /* u' */ + 0x0, 0x105ec76f0 /* P'(x) << 1 */ +}; + +/** + * crc32_le_vgfm_generic - Compute CRC-32 (LE variant) with vector registers + * @crc: Initial CRC value, typically ~0. + * @buf: Input buffer pointer, performance might be improved if the + * buffer is on a doubleword boundary. + * @size: Size of the buffer, must be 64 bytes or greater. + * @constants: CRC-32 constant pool base pointer. * * Register usage: - * - * %r5: CRC-32 constant pool base pointer. - * V0: Initial CRC value and intermediate constants and results. - * V1..V4: Data for CRC computation. - * V5..V8: Next data chunks that are fetched from the input buffer. - * V9: Constant for BE->LE conversion and shift operations - * + * V0: Initial CRC value and intermediate constants and results. + * V1..V4: Data for CRC computation. + * V5..V8: Next data chunks that are fetched from the input buffer. + * V9: Constant for BE->LE conversion and shift operations * V10..V14: CRC-32 constants. */ - -SYM_FUNC_START(crc32_le_vgfm_16) - larl %r5,constants_CRC_32_LE - j crc32_le_vgfm_generic -SYM_FUNC_END(crc32_le_vgfm_16) - -SYM_FUNC_START(crc32c_le_vgfm_16) - larl %r5,constants_CRC_32C_LE - j crc32_le_vgfm_generic -SYM_FUNC_END(crc32c_le_vgfm_16) - -SYM_FUNC_START(crc32_le_vgfm_generic) +static u32 crc32_le_vgfm_generic(u32 crc, unsigned char const *buf, size_t size, unsigned long *constants) +{ /* Load CRC-32 constants */ - VLM CONST_PERM_LE2BE,CONST_CRC_POLY,0,%r5 + fpu_vlm(CONST_PERM_LE2BE, CONST_CRC_POLY, constants); /* * Load the initial CRC value. @@ -125,90 +101,73 @@ SYM_FUNC_START(crc32_le_vgfm_generic) * vector register and is later XORed with the LSB portion * of the loaded input data. */ - VZERO %v0 /* Clear V0 */ - VLVGF %v0,%r2,3 /* Load CRC into rightmost word */ + fpu_vzero(0); /* Clear V0 */ + fpu_vlvgf(0, crc, 3); /* Load CRC into rightmost word */ /* Load a 64-byte data chunk and XOR with CRC */ - VLM %v1,%v4,0,%r3 /* 64-bytes into V1..V4 */ - VPERM %v1,%v1,%v1,CONST_PERM_LE2BE - VPERM %v2,%v2,%v2,CONST_PERM_LE2BE - VPERM %v3,%v3,%v3,CONST_PERM_LE2BE - VPERM %v4,%v4,%v4,CONST_PERM_LE2BE + fpu_vlm(1, 4, buf); + fpu_vperm(1, 1, 1, CONST_PERM_LE2BE); + fpu_vperm(2, 2, 2, CONST_PERM_LE2BE); + fpu_vperm(3, 3, 3, CONST_PERM_LE2BE); + fpu_vperm(4, 4, 4, CONST_PERM_LE2BE); + + fpu_vx(1, 0, 1); /* V1 ^= CRC */ + buf += 64; + size -= 64; + + while (size >= 64) { + fpu_vlm(5, 8, buf); + fpu_vperm(5, 5, 5, CONST_PERM_LE2BE); + fpu_vperm(6, 6, 6, CONST_PERM_LE2BE); + fpu_vperm(7, 7, 7, CONST_PERM_LE2BE); + fpu_vperm(8, 8, 8, CONST_PERM_LE2BE); + /* + * Perform a GF(2) multiplication of the doublewords in V1 with + * the R1 and R2 reduction constants in V0. The intermediate + * result is then folded (accumulated) with the next data chunk + * in V5 and stored in V1. Repeat this step for the register + * contents in V2, V3, and V4 respectively. + */ + fpu_vgfmag(1, CONST_R2R1, 1, 5); + fpu_vgfmag(2, CONST_R2R1, 2, 6); + fpu_vgfmag(3, CONST_R2R1, 3, 7); + fpu_vgfmag(4, CONST_R2R1, 4, 8); + buf += 64; + size -= 64; + } - VX %v1,%v0,%v1 /* V1 ^= CRC */ - aghi %r3,64 /* BUF = BUF + 64 */ - aghi %r4,-64 /* LEN = LEN - 64 */ - - cghi %r4,64 - jl .Lless_than_64bytes - -.Lfold_64bytes_loop: - /* Load the next 64-byte data chunk into V5 to V8 */ - VLM %v5,%v8,0,%r3 - VPERM %v5,%v5,%v5,CONST_PERM_LE2BE - VPERM %v6,%v6,%v6,CONST_PERM_LE2BE - VPERM %v7,%v7,%v7,CONST_PERM_LE2BE - VPERM %v8,%v8,%v8,CONST_PERM_LE2BE - - /* - * Perform a GF(2) multiplication of the doublewords in V1 with - * the R1 and R2 reduction constants in V0. The intermediate result - * is then folded (accumulated) with the next data chunk in V5 and - * stored in V1. Repeat this step for the register contents - * in V2, V3, and V4 respectively. - */ - VGFMAG %v1,CONST_R2R1,%v1,%v5 - VGFMAG %v2,CONST_R2R1,%v2,%v6 - VGFMAG %v3,CONST_R2R1,%v3,%v7 - VGFMAG %v4,CONST_R2R1,%v4,%v8 - - aghi %r3,64 /* BUF = BUF + 64 */ - aghi %r4,-64 /* LEN = LEN - 64 */ - - cghi %r4,64 - jnl .Lfold_64bytes_loop - -.Lless_than_64bytes: /* * Fold V1 to V4 into a single 128-bit value in V1. Multiply V1 with R3 * and R4 and accumulating the next 128-bit chunk until a single 128-bit * value remains. */ - VGFMAG %v1,CONST_R4R3,%v1,%v2 - VGFMAG %v1,CONST_R4R3,%v1,%v3 - VGFMAG %v1,CONST_R4R3,%v1,%v4 - - cghi %r4,16 - jl .Lfinal_fold - -.Lfold_16bytes_loop: - - VL %v2,0,,%r3 /* Load next data chunk */ - VPERM %v2,%v2,%v2,CONST_PERM_LE2BE - VGFMAG %v1,CONST_R4R3,%v1,%v2 /* Fold next data chunk */ + fpu_vgfmag(1, CONST_R4R3, 1, 2); + fpu_vgfmag(1, CONST_R4R3, 1, 3); + fpu_vgfmag(1, CONST_R4R3, 1, 4); + + while (size >= 16) { + fpu_vl(2, buf); + fpu_vperm(2, 2, 2, CONST_PERM_LE2BE); + fpu_vgfmag(1, CONST_R4R3, 1, 2); + buf += 16; + size -= 16; + } - aghi %r3,16 - aghi %r4,-16 - - cghi %r4,16 - jnl .Lfold_16bytes_loop - -.Lfinal_fold: /* * Set up a vector register for byte shifts. The shift value must * be loaded in bits 1-4 in byte element 7 of a vector register. * Shift by 8 bytes: 0x40 * Shift by 4 bytes: 0x20 */ - VLEIB %v9,0x40,7 + fpu_vleib(9, 0x40, 7); /* * Prepare V0 for the next GF(2) multiplication: shift V0 by 8 bytes * to move R4 into the rightmost doubleword and set the leftmost * doubleword to 0x1. */ - VSRLB %v0,CONST_R4R3,%v9 - VLEIG %v0,1,0 + fpu_vsrlb(0, CONST_R4R3, 9); + fpu_vleig(0, 1, 0); /* * Compute GF(2) product of V1 and V0. The rightmost doubleword @@ -216,7 +175,7 @@ SYM_FUNC_START(crc32_le_vgfm_generic) * multiplied by 0x1 and is then XORed with rightmost product. * Implicitly, the intermediate leftmost product becomes padded */ - VGFMG %v1,%v0,%v1 + fpu_vgfmg(1, 0, 1); /* * Now do the final 32-bit fold by multiplying the rightmost word @@ -231,10 +190,10 @@ SYM_FUNC_START(crc32_le_vgfm_generic) * rightmost doubleword and the leftmost doubleword is zero to ignore * the leftmost product of V1. */ - VLEIB %v9,0x20,7 /* Shift by words */ - VSRLB %v2,%v1,%v9 /* Store remaining bits in V2 */ - VUPLLF %v1,%v1 /* Split rightmost doubleword */ - VGFMAG %v1,CONST_R5,%v1,%v2 /* V1 = (V1 * R5) XOR V2 */ + fpu_vleib(9, 0x20, 7); /* Shift by words */ + fpu_vsrlb(2, 1, 9); /* Store remaining bits in V2 */ + fpu_vupllf(1, 1); /* Split rightmost doubleword */ + fpu_vgfmag(1, CONST_R5, 1, 2); /* V1 = (V1 * R5) XOR V2 */ /* * Apply a Barret reduction to compute the final 32-bit CRC value. @@ -256,20 +215,26 @@ SYM_FUNC_START(crc32_le_vgfm_generic) */ /* T1(x) = floor( R(x) / x^32 ) GF2MUL u */ - VUPLLF %v2,%v1 - VGFMG %v2,CONST_RU_POLY,%v2 + fpu_vupllf(2, 1); + fpu_vgfmg(2, CONST_RU_POLY, 2); /* * Compute the GF(2) product of the CRC polynomial with T1(x) in * V2 and XOR the intermediate result, T2(x), with the value in V1. * The final result is stored in word element 2 of V2. */ - VUPLLF %v2,%v2 - VGFMAG %v2,CONST_CRC_POLY,%v2,%v1 + fpu_vupllf(2, 2); + fpu_vgfmag(2, CONST_CRC_POLY, 2, 1); + + return fpu_vlgvf(2, 2); +} -.Ldone: - VLGVF %r2,%v2,2 - BR_EX %r14 -SYM_FUNC_END(crc32_le_vgfm_generic) +u32 crc32_le_vgfm_16(u32 crc, unsigned char const *buf, size_t size) +{ + return crc32_le_vgfm_generic(crc, buf, size, &constants_CRC_32_LE[0]); +} -.previous +u32 crc32c_le_vgfm_16(u32 crc, unsigned char const *buf, size_t size) +{ + return crc32_le_vgfm_generic(crc, buf, size, &constants_CRC_32C_LE[0]); +} diff --git a/arch/s390/crypto/paes_s390.c b/arch/s390/crypto/paes_s390.c index 55ee5567a5ea..99f7e1f2b70a 100644 --- a/arch/s390/crypto/paes_s390.c +++ b/arch/s390/crypto/paes_s390.c @@ -125,20 +125,8 @@ struct s390_pxts_ctx { static inline int __paes_keyblob2pkey(struct key_blob *kb, struct pkey_protkey *pk) { - int i, ret; - - /* try three times in case of failure */ - for (i = 0; i < 3; i++) { - if (i > 0 && ret == -EAGAIN && in_task()) - if (msleep_interruptible(1000)) - return -EINTR; - ret = pkey_keyblob2pkey(kb->key, kb->keylen, - pk->protkey, &pk->len, &pk->type); - if (ret == 0) - break; - } - - return ret; + return pkey_keyblob2pkey(kb->key, kb->keylen, + pk->protkey, &pk->len, &pk->type); } static inline int __paes_convert_key(struct s390_paes_ctx *ctx) diff --git a/arch/s390/hypfs/hypfs_diag0c.c b/arch/s390/hypfs/hypfs_diag0c.c index 9a2786079e3a..4131f0daa5ea 100644 --- a/arch/s390/hypfs/hypfs_diag0c.c +++ b/arch/s390/hypfs/hypfs_diag0c.c @@ -20,8 +20,7 @@ */ static void diag0c_fn(void *data) { - diag_stat_inc(DIAG_STAT_X00C); - diag_amode31_ops.diag0c(((void **)data)[smp_processor_id()]); + diag0c(((void **)data)[smp_processor_id()]); } /* diff --git a/arch/s390/hypfs/hypfs_sprp.c b/arch/s390/hypfs/hypfs_sprp.c index f5f7e78ddc0c..9fc3f0dae8f0 100644 --- a/arch/s390/hypfs/hypfs_sprp.c +++ b/arch/s390/hypfs/hypfs_sprp.c @@ -25,7 +25,7 @@ static inline unsigned long __hypfs_sprp_diag304(void *data, unsigned long cmd) { - union register_pair r1 = { .even = (unsigned long)data, }; + union register_pair r1 = { .even = virt_to_phys(data), }; asm volatile("diag %[r1],%[r3],0x304\n" : [r1] "+&d" (r1.pair) @@ -74,7 +74,7 @@ static int __hypfs_sprp_ioctl(void __user *user_area) int rc; rc = -ENOMEM; - data = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA); + data = (void *)get_zeroed_page(GFP_KERNEL); diag304 = kzalloc(sizeof(*diag304), GFP_KERNEL); if (!data || !diag304) goto out; diff --git a/arch/s390/include/asm/access-regs.h b/arch/s390/include/asm/access-regs.h new file mode 100644 index 000000000000..1a6412d9f5ad --- /dev/null +++ b/arch/s390/include/asm/access-regs.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright IBM Corp. 1999, 2024 + */ + +#ifndef __ASM_S390_ACCESS_REGS_H +#define __ASM_S390_ACCESS_REGS_H + +#include <linux/instrumented.h> +#include <asm/sigcontext.h> + +struct access_regs { + unsigned int regs[NUM_ACRS]; +}; + +static inline void save_access_regs(unsigned int *acrs) +{ + struct access_regs *regs = (struct access_regs *)acrs; + + instrument_write(regs, sizeof(*regs)); + asm volatile("stamy 0,15,%[regs]" + : [regs] "=QS" (*regs) + : + : "memory"); +} + +static inline void restore_access_regs(unsigned int *acrs) +{ + struct access_regs *regs = (struct access_regs *)acrs; + + instrument_read(regs, sizeof(*regs)); + asm volatile("lamy 0,15,%[regs]" + : + : [regs] "QS" (*regs) + : "memory"); +} + +#endif /* __ASM_S390_ACCESS_REGS_H */ diff --git a/arch/s390/include/asm/appldata.h b/arch/s390/include/asm/appldata.h index f2240392c708..a92ebbc7aa7a 100644 --- a/arch/s390/include/asm/appldata.h +++ b/arch/s390/include/asm/appldata.h @@ -54,13 +54,13 @@ static inline int appldata_asm(struct appldata_parameter_list *parm_list, parm_list->function = fn; parm_list->parlist_length = sizeof(*parm_list); parm_list->buffer_length = length; - parm_list->product_id_addr = (unsigned long) id; + parm_list->product_id_addr = virt_to_phys(id); parm_list->buffer_addr = virt_to_phys(buffer); diag_stat_inc(DIAG_STAT_X0DC); asm volatile( " diag %1,%0,0xdc" : "=d" (ry) - : "d" (parm_list), "m" (*parm_list), "m" (*id) + : "d" (virt_to_phys(parm_list)), "m" (*parm_list), "m" (*id) : "cc"); return ry; } diff --git a/arch/s390/include/asm/asm-prototypes.h b/arch/s390/include/asm/asm-prototypes.h index a873e873e1ee..56096ae26f29 100644 --- a/arch/s390/include/asm/asm-prototypes.h +++ b/arch/s390/include/asm/asm-prototypes.h @@ -3,7 +3,7 @@ #include <linux/kvm_host.h> #include <linux/ftrace.h> -#include <asm/fpu/api.h> +#include <asm/fpu.h> #include <asm-generic/asm-prototypes.h> __int128_t __ashlti3(__int128_t a, int b); diff --git a/arch/s390/include/asm/bug.h b/arch/s390/include/asm/bug.h index aebe1e22c7be..c500d45fb465 100644 --- a/arch/s390/include/asm/bug.h +++ b/arch/s390/include/asm/bug.h @@ -14,7 +14,7 @@ ".section .rodata.str,\"aMS\",@progbits,1\n" \ "1: .asciz \""__FILE__"\"\n" \ ".previous\n" \ - ".section __bug_table,\"awM\",@progbits,%2\n" \ + ".section __bug_table,\"aw\"\n" \ "2: .long 0b-.\n" \ " .long 1b-.\n" \ " .short %0,%1\n" \ @@ -30,7 +30,7 @@ #define __EMIT_BUG(x) do { \ asm_inline volatile( \ "0: mc 0,0\n" \ - ".section __bug_table,\"awM\",@progbits,%1\n" \ + ".section __bug_table,\"aw\"\n" \ "1: .long 0b-.\n" \ " .short %0\n" \ " .org 1b+%1\n" \ diff --git a/arch/s390/include/asm/checksum.h b/arch/s390/include/asm/checksum.h index 69837eec2ff5..b89159591ca0 100644 --- a/arch/s390/include/asm/checksum.h +++ b/arch/s390/include/asm/checksum.h @@ -12,36 +12,29 @@ #ifndef _S390_CHECKSUM_H #define _S390_CHECKSUM_H -#include <linux/kasan-checks.h> +#include <linux/instrumented.h> #include <linux/in6.h> -/* - * Computes the checksum of a memory block at buff, length len, - * and adds in "sum" (32-bit). - * - * Returns a 32-bit number suitable for feeding into itself - * or csum_tcpudp_magic. - * - * This function must be called with even lengths, except - * for the last fragment, which may be odd. - * - * It's best to have buff aligned on a 32-bit boundary. - */ -static inline __wsum csum_partial(const void *buff, int len, __wsum sum) +static inline __wsum cksm(const void *buff, int len, __wsum sum) { union register_pair rp = { - .even = (unsigned long) buff, - .odd = (unsigned long) len, + .even = (unsigned long)buff, + .odd = (unsigned long)len, }; - kasan_check_read(buff, len); - asm volatile( + instrument_read(buff, len); + asm volatile("\n" "0: cksm %[sum],%[rp]\n" " jo 0b\n" : [sum] "+&d" (sum), [rp] "+&d" (rp.pair) : : "cc", "memory"); return sum; } +__wsum csum_partial(const void *buff, int len, __wsum sum); + +#define _HAVE_ARCH_CSUM_AND_COPY +__wsum csum_partial_copy_nocheck(const void *src, void *dst, int len); + /* * Fold a partial checksum without adding pseudo headers. */ diff --git a/arch/s390/include/asm/diag.h b/arch/s390/include/asm/diag.h index bed804137537..20b94220113b 100644 --- a/arch/s390/include/asm/diag.h +++ b/arch/s390/include/asm/diag.h @@ -44,6 +44,13 @@ enum diag_stat_enum { void diag_stat_inc(enum diag_stat_enum nr); void diag_stat_inc_norecursion(enum diag_stat_enum nr); +struct hypfs_diag0c_entry; + +/* + * Diagnose 0c: Pseudo Timer + */ +void diag0c(struct hypfs_diag0c_entry *data); + /* * Diagnose 10: Release page range */ @@ -331,10 +338,10 @@ struct hypfs_diag0c_entry; */ struct diag_ops { int (*diag210)(struct diag210 *addr); - int (*diag26c)(void *req, void *resp, enum diag26c_sc subcode); + int (*diag26c)(unsigned long rx, unsigned long rx1, enum diag26c_sc subcode); int (*diag14)(unsigned long rx, unsigned long ry1, unsigned long subcode); int (*diag8c)(struct diag8c *addr, struct ccw_dev_id *devno, size_t len); - void (*diag0c)(struct hypfs_diag0c_entry *entry); + void (*diag0c)(unsigned long rx); void (*diag308_reset)(void); }; @@ -342,9 +349,9 @@ extern struct diag_ops diag_amode31_ops; extern struct diag210 *__diag210_tmp_amode31; int _diag210_amode31(struct diag210 *addr); -int _diag26c_amode31(void *req, void *resp, enum diag26c_sc subcode); +int _diag26c_amode31(unsigned long rx, unsigned long rx1, enum diag26c_sc subcode); int _diag14_amode31(unsigned long rx, unsigned long ry1, unsigned long subcode); -void _diag0c_amode31(struct hypfs_diag0c_entry *entry); +void _diag0c_amode31(unsigned long rx); void _diag308_reset_amode31(void); int _diag8c_amode31(struct diag8c *addr, struct ccw_dev_id *devno, size_t len); diff --git a/arch/s390/include/asm/entry-common.h b/arch/s390/include/asm/entry-common.h index fdd319a622b0..7f5004065e8a 100644 --- a/arch/s390/include/asm/entry-common.h +++ b/arch/s390/include/asm/entry-common.h @@ -8,7 +8,7 @@ #include <linux/processor.h> #include <linux/uaccess.h> #include <asm/timex.h> -#include <asm/fpu/api.h> +#include <asm/fpu.h> #include <asm/pai.h> #define ARCH_EXIT_TO_USER_MODE_WORK (_TIF_GUARDED_STORAGE | _TIF_PER_TRAP) @@ -41,8 +41,7 @@ static __always_inline void arch_exit_to_user_mode_work(struct pt_regs *regs, static __always_inline void arch_exit_to_user_mode(void) { - if (test_cpu_flag(CIF_FPU)) - __load_fpu_regs(); + load_user_fpu_regs(); if (IS_ENABLED(CONFIG_DEBUG_ENTRY)) debug_user_asce(1); diff --git a/arch/s390/include/asm/vx-insn-asm.h b/arch/s390/include/asm/fpu-insn-asm.h index 360f8b36d962..02ccfe46050a 100644 --- a/arch/s390/include/asm/vx-insn-asm.h +++ b/arch/s390/include/asm/fpu-insn-asm.h @@ -9,11 +9,11 @@ * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com> */ -#ifndef __ASM_S390_VX_INSN_INTERNAL_H -#define __ASM_S390_VX_INSN_INTERNAL_H +#ifndef __ASM_S390_FPU_INSN_ASM_H +#define __ASM_S390_FPU_INSN_ASM_H -#ifndef __ASM_S390_VX_INSN_H -#error only <asm/vx-insn.h> can be included directly +#ifndef __ASM_S390_FPU_INSN_H +#error only <asm/fpu-insn.h> can be included directly #endif #ifdef __ASSEMBLY__ @@ -195,10 +195,26 @@ /* RXB - Compute most significant bit used vector registers * * @rxb: Operand to store computed RXB value - * @v1: First vector register designated operand - * @v2: Second vector register designated operand - * @v3: Third vector register designated operand - * @v4: Fourth vector register designated operand + * @v1: Vector register designated operand whose MSB is stored in + * RXB bit 0 (instruction bit 36) and whose remaining bits + * are stored in instruction bits 8-11. + * @v2: Vector register designated operand whose MSB is stored in + * RXB bit 1 (instruction bit 37) and whose remaining bits + * are stored in instruction bits 12-15. + * @v3: Vector register designated operand whose MSB is stored in + * RXB bit 2 (instruction bit 38) and whose remaining bits + * are stored in instruction bits 16-19. + * @v4: Vector register designated operand whose MSB is stored in + * RXB bit 3 (instruction bit 39) and whose remaining bits + * are stored in instruction bits 32-35. + * + * Note: In most vector instruction formats [1] V1, V2, V3, and V4 directly + * correspond to @v1, @v2, @v3, and @v4. But there are exceptions, such as but + * not limited to the vector instruction formats VRR-g, VRR-h, VRS-a, VRS-d, + * and VSI. + * + * [1] IBM z/Architecture Principles of Operation, chapter "Program + * Execution, section "Instructions", subsection "Instruction Formats". */ .macro RXB rxb v1 v2=0 v3=0 v4=0 \rxb = 0 @@ -223,6 +239,9 @@ * @v2: Second vector register designated operand (for RXB) * @v3: Third vector register designated operand (for RXB) * @v4: Fourth vector register designated operand (for RXB) + * + * Note: For @v1, @v2, @v3, and @v4 also refer to the RXB macro + * description for further details. */ .macro MRXB m v1 v2=0 v3=0 v4=0 rxb = 0 @@ -238,6 +257,9 @@ * @v2: Second vector register designated operand (for RXB) * @v3: Third vector register designated operand (for RXB) * @v4: Fourth vector register designated operand (for RXB) + * + * Note: For @v1, @v2, @v3, and @v4 also refer to the RXB macro + * description for further details. */ .macro MRXBOPC m opc v1 v2=0 v3=0 v4=0 MRXB \m, \v1, \v2, \v3, \v4 @@ -350,7 +372,7 @@ VX_NUM v3, \vr .word 0xE700 | (r1 << 4) | (v3&15) .word (b2 << 12) | (\disp) - MRXBOPC \m, 0x21, v3 + MRXBOPC \m, 0x21, 0, v3 .endm .macro VLGVB gr, vr, disp, base="%r0" VLGV \gr, \vr, \disp, \base, 0 @@ -499,6 +521,25 @@ VMRL \vr1, \vr2, \vr3, 3 .endm +/* VECTOR LOAD WITH LENGTH */ +.macro VLL v, gr, disp, base + VX_NUM v1, \v + GR_NUM b2, \base + GR_NUM r3, \gr + .word 0xE700 | ((v1&15) << 4) | r3 + .word (b2 << 12) | (\disp) + MRXBOPC 0, 0x37, v1 +.endm + +/* VECTOR STORE WITH LENGTH */ +.macro VSTL v, gr, disp, base + VX_NUM v1, \v + GR_NUM b2, \base + GR_NUM r3, \gr + .word 0xE700 | ((v1&15) << 4) | r3 + .word (b2 << 12) | (\disp) + MRXBOPC 0, 0x3f, v1 +.endm /* Vector integer instructions */ @@ -512,6 +553,16 @@ MRXBOPC 0, 0x68, v1, v2, v3 .endm +/* VECTOR CHECKSUM */ +.macro VCKSM vr1, vr2, vr3 + VX_NUM v1, \vr1 + VX_NUM v2, \vr2 + VX_NUM v3, \vr3 + .word 0xE700 | ((v1&15) << 4) | (v2&15) + .word ((v3&15) << 12) + MRXBOPC 0, 0x66, v1, v2, v3 +.endm + /* VECTOR EXCLUSIVE OR */ .macro VX vr1, vr2, vr3 VX_NUM v1, \vr1 @@ -678,4 +729,4 @@ .endm #endif /* __ASSEMBLY__ */ -#endif /* __ASM_S390_VX_INSN_INTERNAL_H */ +#endif /* __ASM_S390_FPU_INSN_ASM_H */ diff --git a/arch/s390/include/asm/fpu-insn.h b/arch/s390/include/asm/fpu-insn.h new file mode 100644 index 000000000000..c1e2e521d9af --- /dev/null +++ b/arch/s390/include/asm/fpu-insn.h @@ -0,0 +1,486 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Support for Floating Point and Vector Instructions + * + */ + +#ifndef __ASM_S390_FPU_INSN_H +#define __ASM_S390_FPU_INSN_H + +#include <asm/fpu-insn-asm.h> + +#ifndef __ASSEMBLY__ + +#include <linux/instrumented.h> +#include <asm/asm-extable.h> + +asm(".include \"asm/fpu-insn-asm.h\"\n"); + +/* + * Various small helper functions, which can and should be used within + * kernel fpu code sections. Each function represents only one floating + * point or vector instruction (except for helper functions which require + * exception handling). + * + * This allows to use floating point and vector instructions like C + * functions, which has the advantage that all supporting code, like + * e.g. loops, can be written in easy to read C code. + * + * Each of the helper functions provides support for code instrumentation, + * like e.g. KASAN. Therefore instrumentation is also covered automatically + * when using these functions. + * + * In order to ensure that code generated with the helper functions stays + * within kernel fpu sections, which are guarded with kernel_fpu_begin() + * and kernel_fpu_end() calls, each function has a mandatory "memory" + * barrier. + */ + +static __always_inline void fpu_cefbr(u8 f1, s32 val) +{ + asm volatile("cefbr %[f1],%[val]\n" + : + : [f1] "I" (f1), [val] "d" (val) + : "memory"); +} + +static __always_inline unsigned long fpu_cgebr(u8 f2, u8 mode) +{ + unsigned long val; + + asm volatile("cgebr %[val],%[mode],%[f2]\n" + : [val] "=d" (val) + : [f2] "I" (f2), [mode] "I" (mode) + : "memory"); + return val; +} + +static __always_inline void fpu_debr(u8 f1, u8 f2) +{ + asm volatile("debr %[f1],%[f2]\n" + : + : [f1] "I" (f1), [f2] "I" (f2) + : "memory"); +} + +static __always_inline void fpu_ld(unsigned short fpr, freg_t *reg) +{ + instrument_read(reg, sizeof(*reg)); + asm volatile("ld %[fpr],%[reg]\n" + : + : [fpr] "I" (fpr), [reg] "Q" (reg->ui) + : "memory"); +} + +static __always_inline void fpu_ldgr(u8 f1, u32 val) +{ + asm volatile("ldgr %[f1],%[val]\n" + : + : [f1] "I" (f1), [val] "d" (val) + : "memory"); +} + +static __always_inline void fpu_lfpc(unsigned int *fpc) +{ + instrument_read(fpc, sizeof(*fpc)); + asm volatile("lfpc %[fpc]" + : + : [fpc] "Q" (*fpc) + : "memory"); +} + +/** + * fpu_lfpc_safe - Load floating point control register safely. + * @fpc: new value for floating point control register + * + * Load floating point control register. This may lead to an exception, + * since a saved value may have been modified by user space (ptrace, + * signal return, kvm registers) to an invalid value. In such a case + * set the floating point control register to zero. + */ +static inline void fpu_lfpc_safe(unsigned int *fpc) +{ + u32 tmp; + + instrument_read(fpc, sizeof(*fpc)); + asm volatile("\n" + "0: lfpc %[fpc]\n" + "1: nopr %%r7\n" + ".pushsection .fixup, \"ax\"\n" + "2: lghi %[tmp],0\n" + " sfpc %[tmp]\n" + " jg 1b\n" + ".popsection\n" + EX_TABLE(1b, 2b) + : [tmp] "=d" (tmp) + : [fpc] "Q" (*fpc) + : "memory"); +} + +static __always_inline void fpu_std(unsigned short fpr, freg_t *reg) +{ + instrument_write(reg, sizeof(*reg)); + asm volatile("std %[fpr],%[reg]\n" + : [reg] "=Q" (reg->ui) + : [fpr] "I" (fpr) + : "memory"); +} + +static __always_inline void fpu_sfpc(unsigned int fpc) +{ + asm volatile("sfpc %[fpc]" + : + : [fpc] "d" (fpc) + : "memory"); +} + +static __always_inline void fpu_stfpc(unsigned int *fpc) +{ + instrument_write(fpc, sizeof(*fpc)); + asm volatile("stfpc %[fpc]" + : [fpc] "=Q" (*fpc) + : + : "memory"); +} + +static __always_inline void fpu_vab(u8 v1, u8 v2, u8 v3) +{ + asm volatile("VAB %[v1],%[v2],%[v3]" + : + : [v1] "I" (v1), [v2] "I" (v2), [v3] "I" (v3) + : "memory"); +} + +static __always_inline void fpu_vcksm(u8 v1, u8 v2, u8 v3) +{ + asm volatile("VCKSM %[v1],%[v2],%[v3]" + : + : [v1] "I" (v1), [v2] "I" (v2), [v3] "I" (v3) + : "memory"); +} + +static __always_inline void fpu_vesravb(u8 v1, u8 v2, u8 v3) +{ + asm volatile("VESRAVB %[v1],%[v2],%[v3]" + : + : [v1] "I" (v1), [v2] "I" (v2), [v3] "I" (v3) + : "memory"); +} + +static __always_inline void fpu_vgfmag(u8 v1, u8 v2, u8 v3, u8 v4) +{ + asm volatile("VGFMAG %[v1],%[v2],%[v3],%[v4]" + : + : [v1] "I" (v1), [v2] "I" (v2), [v3] "I" (v3), [v4] "I" (v4) + : "memory"); +} + +static __always_inline void fpu_vgfmg(u8 v1, u8 v2, u8 v3) +{ + asm volatile("VGFMG %[v1],%[v2],%[v3]" + : + : [v1] "I" (v1), [v2] "I" (v2), [v3] "I" (v3) + : "memory"); +} + +#ifdef CONFIG_CC_IS_CLANG + +static __always_inline void fpu_vl(u8 v1, const void *vxr) +{ + instrument_read(vxr, sizeof(__vector128)); + asm volatile("\n" + " la 1,%[vxr]\n" + " VL %[v1],0,,1\n" + : + : [vxr] "R" (*(__vector128 *)vxr), + [v1] "I" (v1) + : "memory", "1"); +} + +#else /* CONFIG_CC_IS_CLANG */ + +static __always_inline void fpu_vl(u8 v1, const void *vxr) +{ + instrument_read(vxr, sizeof(__vector128)); + asm volatile("VL %[v1],%O[vxr],,%R[vxr]\n" + : + : [vxr] "Q" (*(__vector128 *)vxr), + [v1] "I" (v1) + : "memory"); +} + +#endif /* CONFIG_CC_IS_CLANG */ + +static __always_inline void fpu_vleib(u8 v, s16 val, u8 index) +{ + asm volatile("VLEIB %[v],%[val],%[index]" + : + : [v] "I" (v), [val] "K" (val), [index] "I" (index) + : "memory"); +} + +static __always_inline void fpu_vleig(u8 v, s16 val, u8 index) +{ + asm volatile("VLEIG %[v],%[val],%[index]" + : + : [v] "I" (v), [val] "K" (val), [index] "I" (index) + : "memory"); +} + +static __always_inline u64 fpu_vlgvf(u8 v, u16 index) +{ + u64 val; + + asm volatile("VLGVF %[val],%[v],%[index]" + : [val] "=d" (val) + : [v] "I" (v), [index] "L" (index) + : "memory"); + return val; +} + +#ifdef CONFIG_CC_IS_CLANG + +static __always_inline void fpu_vll(u8 v1, u32 index, const void *vxr) +{ + unsigned int size; + + size = min(index + 1, sizeof(__vector128)); + instrument_read(vxr, size); + asm volatile("\n" + " la 1,%[vxr]\n" + " VLL %[v1],%[index],0,1\n" + : + : [vxr] "R" (*(u8 *)vxr), + [index] "d" (index), + [v1] "I" (v1) + : "memory", "1"); +} + +#else /* CONFIG_CC_IS_CLANG */ + +static __always_inline void fpu_vll(u8 v1, u32 index, const void *vxr) +{ + unsigned int size; + + size = min(index + 1, sizeof(__vector128)); + instrument_read(vxr, size); + asm volatile("VLL %[v1],%[index],%O[vxr],%R[vxr]\n" + : + : [vxr] "Q" (*(u8 *)vxr), + [index] "d" (index), + [v1] "I" (v1) + : "memory"); +} + +#endif /* CONFIG_CC_IS_CLANG */ + +#ifdef CONFIG_CC_IS_CLANG + +#define fpu_vlm(_v1, _v3, _vxrs) \ +({ \ + unsigned int size = ((_v3) - (_v1) + 1) * sizeof(__vector128); \ + struct { \ + __vector128 _v[(_v3) - (_v1) + 1]; \ + } *_v = (void *)(_vxrs); \ + \ + instrument_read(_v, size); \ + asm volatile("\n" \ + " la 1,%[vxrs]\n" \ + " VLM %[v1],%[v3],0,1\n" \ + : \ + : [vxrs] "R" (*_v), \ + [v1] "I" (_v1), [v3] "I" (_v3) \ + : "memory", "1"); \ + (_v3) - (_v1) + 1; \ +}) + +#else /* CONFIG_CC_IS_CLANG */ + +#define fpu_vlm(_v1, _v3, _vxrs) \ +({ \ + unsigned int size = ((_v3) - (_v1) + 1) * sizeof(__vector128); \ + struct { \ + __vector128 _v[(_v3) - (_v1) + 1]; \ + } *_v = (void *)(_vxrs); \ + \ + instrument_read(_v, size); \ + asm volatile("VLM %[v1],%[v3],%O[vxrs],%R[vxrs]\n" \ + : \ + : [vxrs] "Q" (*_v), \ + [v1] "I" (_v1), [v3] "I" (_v3) \ + : "memory"); \ + (_v3) - (_v1) + 1; \ +}) + +#endif /* CONFIG_CC_IS_CLANG */ + +static __always_inline void fpu_vlr(u8 v1, u8 v2) +{ + asm volatile("VLR %[v1],%[v2]" + : + : [v1] "I" (v1), [v2] "I" (v2) + : "memory"); +} + +static __always_inline void fpu_vlvgf(u8 v, u32 val, u16 index) +{ + asm volatile("VLVGF %[v],%[val],%[index]" + : + : [v] "I" (v), [val] "d" (val), [index] "L" (index) + : "memory"); +} + +static __always_inline void fpu_vn(u8 v1, u8 v2, u8 v3) +{ + asm volatile("VN %[v1],%[v2],%[v3]" + : + : [v1] "I" (v1), [v2] "I" (v2), [v3] "I" (v3) + : "memory"); +} + +static __always_inline void fpu_vperm(u8 v1, u8 v2, u8 v3, u8 v4) +{ + asm volatile("VPERM %[v1],%[v2],%[v3],%[v4]" + : + : [v1] "I" (v1), [v2] "I" (v2), [v3] "I" (v3), [v4] "I" (v4) + : "memory"); +} + +static __always_inline void fpu_vrepib(u8 v1, s16 i2) +{ + asm volatile("VREPIB %[v1],%[i2]" + : + : [v1] "I" (v1), [i2] "K" (i2) + : "memory"); +} + +static __always_inline void fpu_vsrlb(u8 v1, u8 v2, u8 v3) +{ + asm volatile("VSRLB %[v1],%[v2],%[v3]" + : + : [v1] "I" (v1), [v2] "I" (v2), [v3] "I" (v3) + : "memory"); +} + +#ifdef CONFIG_CC_IS_CLANG + +static __always_inline void fpu_vst(u8 v1, const void *vxr) +{ + instrument_write(vxr, sizeof(__vector128)); + asm volatile("\n" + " la 1,%[vxr]\n" + " VST %[v1],0,,1\n" + : [vxr] "=R" (*(__vector128 *)vxr) + : [v1] "I" (v1) + : "memory", "1"); +} + +#else /* CONFIG_CC_IS_CLANG */ + +static __always_inline void fpu_vst(u8 v1, const void *vxr) +{ + instrument_write(vxr, sizeof(__vector128)); + asm volatile("VST %[v1],%O[vxr],,%R[vxr]\n" + : [vxr] "=Q" (*(__vector128 *)vxr) + : [v1] "I" (v1) + : "memory"); +} + +#endif /* CONFIG_CC_IS_CLANG */ + +#ifdef CONFIG_CC_IS_CLANG + +static __always_inline void fpu_vstl(u8 v1, u32 index, const void *vxr) +{ + unsigned int size; + + size = min(index + 1, sizeof(__vector128)); + instrument_write(vxr, size); + asm volatile("\n" + " la 1,%[vxr]\n" + " VSTL %[v1],%[index],0,1\n" + : [vxr] "=R" (*(u8 *)vxr) + : [index] "d" (index), [v1] "I" (v1) + : "memory", "1"); +} + +#else /* CONFIG_CC_IS_CLANG */ + +static __always_inline void fpu_vstl(u8 v1, u32 index, const void *vxr) +{ + unsigned int size; + + size = min(index + 1, sizeof(__vector128)); + instrument_write(vxr, size); + asm volatile("VSTL %[v1],%[index],%O[vxr],%R[vxr]\n" + : [vxr] "=Q" (*(u8 *)vxr) + : [index] "d" (index), [v1] "I" (v1) + : "memory"); +} + +#endif /* CONFIG_CC_IS_CLANG */ + +#ifdef CONFIG_CC_IS_CLANG + +#define fpu_vstm(_v1, _v3, _vxrs) \ +({ \ + unsigned int size = ((_v3) - (_v1) + 1) * sizeof(__vector128); \ + struct { \ + __vector128 _v[(_v3) - (_v1) + 1]; \ + } *_v = (void *)(_vxrs); \ + \ + instrument_write(_v, size); \ + asm volatile("\n" \ + " la 1,%[vxrs]\n" \ + " VSTM %[v1],%[v3],0,1\n" \ + : [vxrs] "=R" (*_v) \ + : [v1] "I" (_v1), [v3] "I" (_v3) \ + : "memory", "1"); \ + (_v3) - (_v1) + 1; \ +}) + +#else /* CONFIG_CC_IS_CLANG */ + +#define fpu_vstm(_v1, _v3, _vxrs) \ +({ \ + unsigned int size = ((_v3) - (_v1) + 1) * sizeof(__vector128); \ + struct { \ + __vector128 _v[(_v3) - (_v1) + 1]; \ + } *_v = (void *)(_vxrs); \ + \ + instrument_write(_v, size); \ + asm volatile("VSTM %[v1],%[v3],%O[vxrs],%R[vxrs]\n" \ + : [vxrs] "=Q" (*_v) \ + : [v1] "I" (_v1), [v3] "I" (_v3) \ + : "memory"); \ + (_v3) - (_v1) + 1; \ +}) + +#endif /* CONFIG_CC_IS_CLANG */ + +static __always_inline void fpu_vupllf(u8 v1, u8 v2) +{ + asm volatile("VUPLLF %[v1],%[v2]" + : + : [v1] "I" (v1), [v2] "I" (v2) + : "memory"); +} + +static __always_inline void fpu_vx(u8 v1, u8 v2, u8 v3) +{ + asm volatile("VX %[v1],%[v2],%[v3]" + : + : [v1] "I" (v1), [v2] "I" (v2), [v3] "I" (v3) + : "memory"); +} + +static __always_inline void fpu_vzero(u8 v) +{ + asm volatile("VZERO %[v]" + : + : [v] "I" (v) + : "memory"); +} + +#endif /* __ASSEMBLY__ */ +#endif /* __ASM_S390_FPU_INSN_H */ diff --git a/arch/s390/include/asm/fpu-types.h b/arch/s390/include/asm/fpu-types.h new file mode 100644 index 000000000000..8d58d5a95399 --- /dev/null +++ b/arch/s390/include/asm/fpu-types.h @@ -0,0 +1,51 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * FPU data structures + * + * Copyright IBM Corp. 2015 + * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com> + */ + +#ifndef _ASM_S390_FPU_TYPES_H +#define _ASM_S390_FPU_TYPES_H + +#include <asm/sigcontext.h> + +struct fpu { + u32 fpc; + __vector128 vxrs[__NUM_VXRS] __aligned(8); +}; + +struct kernel_fpu_hdr { + int mask; + u32 fpc; +}; + +struct kernel_fpu { + struct kernel_fpu_hdr hdr; + __vector128 vxrs[] __aligned(8); +}; + +#define KERNEL_FPU_STRUCT(vxr_size) \ +struct kernel_fpu_##vxr_size { \ + struct kernel_fpu_hdr hdr; \ + __vector128 vxrs[vxr_size] __aligned(8); \ +} + +KERNEL_FPU_STRUCT(8); +KERNEL_FPU_STRUCT(16); +KERNEL_FPU_STRUCT(32); + +#define DECLARE_KERNEL_FPU_ONSTACK(vxr_size, name) \ + struct kernel_fpu_##vxr_size name __uninitialized + +#define DECLARE_KERNEL_FPU_ONSTACK8(name) \ + DECLARE_KERNEL_FPU_ONSTACK(8, name) + +#define DECLARE_KERNEL_FPU_ONSTACK16(name) \ + DECLARE_KERNEL_FPU_ONSTACK(16, name) + +#define DECLARE_KERNEL_FPU_ONSTACK32(name) \ + DECLARE_KERNEL_FPU_ONSTACK(32, name) + +#endif /* _ASM_S390_FPU_TYPES_H */ diff --git a/arch/s390/include/asm/fpu.h b/arch/s390/include/asm/fpu.h new file mode 100644 index 000000000000..c84cb33913e2 --- /dev/null +++ b/arch/s390/include/asm/fpu.h @@ -0,0 +1,295 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * In-kernel FPU support functions + * + * + * Consider these guidelines before using in-kernel FPU functions: + * + * 1. Use kernel_fpu_begin() and kernel_fpu_end() to enclose all in-kernel + * use of floating-point or vector registers and instructions. + * + * 2. For kernel_fpu_begin(), specify the vector register range you want to + * use with the KERNEL_VXR_* constants. Consider these usage guidelines: + * + * a) If your function typically runs in process-context, use the lower + * half of the vector registers, for example, specify KERNEL_VXR_LOW. + * b) If your function typically runs in soft-irq or hard-irq context, + * prefer using the upper half of the vector registers, for example, + * specify KERNEL_VXR_HIGH. + * + * If you adhere to these guidelines, an interrupted process context + * does not require to save and restore vector registers because of + * disjoint register ranges. + * + * Also note that the __kernel_fpu_begin()/__kernel_fpu_end() functions + * includes logic to save and restore up to 16 vector registers at once. + * + * 3. You can nest kernel_fpu_begin()/kernel_fpu_end() by using different + * struct kernel_fpu states. Vector registers that are in use by outer + * levels are saved and restored. You can minimize the save and restore + * effort by choosing disjoint vector register ranges. + * + * 5. To use vector floating-point instructions, specify the KERNEL_FPC + * flag to save and restore floating-point controls in addition to any + * vector register range. + * + * 6. To use floating-point registers and instructions only, specify the + * KERNEL_FPR flag. This flag triggers a save and restore of vector + * registers V0 to V15 and floating-point controls. + * + * Copyright IBM Corp. 2015 + * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com> + */ + +#ifndef _ASM_S390_FPU_H +#define _ASM_S390_FPU_H + +#include <linux/processor.h> +#include <linux/preempt.h> +#include <linux/string.h> +#include <linux/sched.h> +#include <asm/sigcontext.h> +#include <asm/fpu-types.h> +#include <asm/fpu-insn.h> +#include <asm/facility.h> + +static inline bool cpu_has_vx(void) +{ + return likely(test_facility(129)); +} + +enum { + KERNEL_FPC_BIT = 0, + KERNEL_VXR_V0V7_BIT, + KERNEL_VXR_V8V15_BIT, + KERNEL_VXR_V16V23_BIT, + KERNEL_VXR_V24V31_BIT, +}; + +#define KERNEL_FPC BIT(KERNEL_FPC_BIT) +#define KERNEL_VXR_V0V7 BIT(KERNEL_VXR_V0V7_BIT) +#define KERNEL_VXR_V8V15 BIT(KERNEL_VXR_V8V15_BIT) +#define KERNEL_VXR_V16V23 BIT(KERNEL_VXR_V16V23_BIT) +#define KERNEL_VXR_V24V31 BIT(KERNEL_VXR_V24V31_BIT) + +#define KERNEL_VXR_LOW (KERNEL_VXR_V0V7 | KERNEL_VXR_V8V15) +#define KERNEL_VXR_MID (KERNEL_VXR_V8V15 | KERNEL_VXR_V16V23) +#define KERNEL_VXR_HIGH (KERNEL_VXR_V16V23 | KERNEL_VXR_V24V31) + +#define KERNEL_VXR (KERNEL_VXR_LOW | KERNEL_VXR_HIGH) +#define KERNEL_FPR (KERNEL_FPC | KERNEL_VXR_LOW) + +void load_fpu_state(struct fpu *state, int flags); +void save_fpu_state(struct fpu *state, int flags); +void __kernel_fpu_begin(struct kernel_fpu *state, int flags); +void __kernel_fpu_end(struct kernel_fpu *state, int flags); + +static __always_inline void save_vx_regs(__vector128 *vxrs) +{ + fpu_vstm(0, 15, &vxrs[0]); + fpu_vstm(16, 31, &vxrs[16]); +} + +static __always_inline void load_vx_regs(__vector128 *vxrs) +{ + fpu_vlm(0, 15, &vxrs[0]); + fpu_vlm(16, 31, &vxrs[16]); +} + +static __always_inline void __save_fp_regs(freg_t *fprs, unsigned int offset) +{ + fpu_std(0, &fprs[0 * offset]); + fpu_std(1, &fprs[1 * offset]); + fpu_std(2, &fprs[2 * offset]); + fpu_std(3, &fprs[3 * offset]); + fpu_std(4, &fprs[4 * offset]); + fpu_std(5, &fprs[5 * offset]); + fpu_std(6, &fprs[6 * offset]); + fpu_std(7, &fprs[7 * offset]); + fpu_std(8, &fprs[8 * offset]); + fpu_std(9, &fprs[9 * offset]); + fpu_std(10, &fprs[10 * offset]); + fpu_std(11, &fprs[11 * offset]); + fpu_std(12, &fprs[12 * offset]); + fpu_std(13, &fprs[13 * offset]); + fpu_std(14, &fprs[14 * offset]); + fpu_std(15, &fprs[15 * offset]); +} + +static __always_inline void __load_fp_regs(freg_t *fprs, unsigned int offset) +{ + fpu_ld(0, &fprs[0 * offset]); + fpu_ld(1, &fprs[1 * offset]); + fpu_ld(2, &fprs[2 * offset]); + fpu_ld(3, &fprs[3 * offset]); + fpu_ld(4, &fprs[4 * offset]); + fpu_ld(5, &fprs[5 * offset]); + fpu_ld(6, &fprs[6 * offset]); + fpu_ld(7, &fprs[7 * offset]); + fpu_ld(8, &fprs[8 * offset]); + fpu_ld(9, &fprs[9 * offset]); + fpu_ld(10, &fprs[10 * offset]); + fpu_ld(11, &fprs[11 * offset]); + fpu_ld(12, &fprs[12 * offset]); + fpu_ld(13, &fprs[13 * offset]); + fpu_ld(14, &fprs[14 * offset]); + fpu_ld(15, &fprs[15 * offset]); +} + +static __always_inline void save_fp_regs(freg_t *fprs) +{ + __save_fp_regs(fprs, sizeof(freg_t) / sizeof(freg_t)); +} + +static __always_inline void load_fp_regs(freg_t *fprs) +{ + __load_fp_regs(fprs, sizeof(freg_t) / sizeof(freg_t)); +} + +static __always_inline void save_fp_regs_vx(__vector128 *vxrs) +{ + freg_t *fprs = (freg_t *)&vxrs[0].high; + + __save_fp_regs(fprs, sizeof(__vector128) / sizeof(freg_t)); +} + +static __always_inline void load_fp_regs_vx(__vector128 *vxrs) +{ + freg_t *fprs = (freg_t *)&vxrs[0].high; + + __load_fp_regs(fprs, sizeof(__vector128) / sizeof(freg_t)); +} + +static inline void load_user_fpu_regs(void) +{ + struct thread_struct *thread = ¤t->thread; + + if (!thread->ufpu_flags) + return; + load_fpu_state(&thread->ufpu, thread->ufpu_flags); + thread->ufpu_flags = 0; +} + +static __always_inline void __save_user_fpu_regs(struct thread_struct *thread, int flags) +{ + save_fpu_state(&thread->ufpu, flags); + __atomic_or(flags, &thread->ufpu_flags); +} + +static inline void save_user_fpu_regs(void) +{ + struct thread_struct *thread = ¤t->thread; + int mask, flags; + + mask = __atomic_or(KERNEL_FPC | KERNEL_VXR, &thread->kfpu_flags); + flags = ~READ_ONCE(thread->ufpu_flags) & (KERNEL_FPC | KERNEL_VXR); + if (flags) + __save_user_fpu_regs(thread, flags); + barrier(); + WRITE_ONCE(thread->kfpu_flags, mask); +} + +static __always_inline void _kernel_fpu_begin(struct kernel_fpu *state, int flags) +{ + struct thread_struct *thread = ¤t->thread; + int mask, uflags; + + mask = __atomic_or(flags, &thread->kfpu_flags); + state->hdr.mask = mask; + uflags = READ_ONCE(thread->ufpu_flags); + if ((uflags & flags) != flags) + __save_user_fpu_regs(thread, ~uflags & flags); + if (mask & flags) + __kernel_fpu_begin(state, flags); +} + +static __always_inline void _kernel_fpu_end(struct kernel_fpu *state, int flags) +{ + int mask = state->hdr.mask; + + if (mask & flags) + __kernel_fpu_end(state, flags); + barrier(); + WRITE_ONCE(current->thread.kfpu_flags, mask); +} + +void __kernel_fpu_invalid_size(void); + +static __always_inline void kernel_fpu_check_size(int flags, unsigned int size) +{ + unsigned int cnt = 0; + + if (flags & KERNEL_VXR_V0V7) + cnt += 8; + if (flags & KERNEL_VXR_V8V15) + cnt += 8; + if (flags & KERNEL_VXR_V16V23) + cnt += 8; + if (flags & KERNEL_VXR_V24V31) + cnt += 8; + if (cnt != size) + __kernel_fpu_invalid_size(); +} + +#define kernel_fpu_begin(state, flags) \ +{ \ + typeof(state) s = (state); \ + int _flags = (flags); \ + \ + kernel_fpu_check_size(_flags, ARRAY_SIZE(s->vxrs)); \ + _kernel_fpu_begin((struct kernel_fpu *)s, _flags); \ +} + +#define kernel_fpu_end(state, flags) \ +{ \ + typeof(state) s = (state); \ + int _flags = (flags); \ + \ + kernel_fpu_check_size(_flags, ARRAY_SIZE(s->vxrs)); \ + _kernel_fpu_end((struct kernel_fpu *)s, _flags); \ +} + +static inline void save_kernel_fpu_regs(struct thread_struct *thread) +{ + if (!thread->kfpu_flags) + return; + save_fpu_state(&thread->kfpu, thread->kfpu_flags); +} + +static inline void restore_kernel_fpu_regs(struct thread_struct *thread) +{ + if (!thread->kfpu_flags) + return; + load_fpu_state(&thread->kfpu, thread->kfpu_flags); +} + +static inline void convert_vx_to_fp(freg_t *fprs, __vector128 *vxrs) +{ + int i; + + for (i = 0; i < __NUM_FPRS; i++) + fprs[i].ui = vxrs[i].high; +} + +static inline void convert_fp_to_vx(__vector128 *vxrs, freg_t *fprs) +{ + int i; + + for (i = 0; i < __NUM_FPRS; i++) + vxrs[i].high = fprs[i].ui; +} + +static inline void fpregs_store(_s390_fp_regs *fpregs, struct fpu *fpu) +{ + fpregs->pad = 0; + fpregs->fpc = fpu->fpc; + convert_vx_to_fp((freg_t *)&fpregs->fprs, fpu->vxrs); +} + +static inline void fpregs_load(_s390_fp_regs *fpregs, struct fpu *fpu) +{ + fpu->fpc = fpregs->fpc; + convert_fp_to_vx(fpu->vxrs, (freg_t *)&fpregs->fprs); +} + +#endif /* _ASM_S390_FPU_H */ diff --git a/arch/s390/include/asm/fpu/api.h b/arch/s390/include/asm/fpu/api.h deleted file mode 100644 index d6ca8bc6ca68..000000000000 --- a/arch/s390/include/asm/fpu/api.h +++ /dev/null @@ -1,126 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * In-kernel FPU support functions - * - * - * Consider these guidelines before using in-kernel FPU functions: - * - * 1. Use kernel_fpu_begin() and kernel_fpu_end() to enclose all in-kernel - * use of floating-point or vector registers and instructions. - * - * 2. For kernel_fpu_begin(), specify the vector register range you want to - * use with the KERNEL_VXR_* constants. Consider these usage guidelines: - * - * a) If your function typically runs in process-context, use the lower - * half of the vector registers, for example, specify KERNEL_VXR_LOW. - * b) If your function typically runs in soft-irq or hard-irq context, - * prefer using the upper half of the vector registers, for example, - * specify KERNEL_VXR_HIGH. - * - * If you adhere to these guidelines, an interrupted process context - * does not require to save and restore vector registers because of - * disjoint register ranges. - * - * Also note that the __kernel_fpu_begin()/__kernel_fpu_end() functions - * includes logic to save and restore up to 16 vector registers at once. - * - * 3. You can nest kernel_fpu_begin()/kernel_fpu_end() by using different - * struct kernel_fpu states. Vector registers that are in use by outer - * levels are saved and restored. You can minimize the save and restore - * effort by choosing disjoint vector register ranges. - * - * 5. To use vector floating-point instructions, specify the KERNEL_FPC - * flag to save and restore floating-point controls in addition to any - * vector register range. - * - * 6. To use floating-point registers and instructions only, specify the - * KERNEL_FPR flag. This flag triggers a save and restore of vector - * registers V0 to V15 and floating-point controls. - * - * Copyright IBM Corp. 2015 - * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com> - */ - -#ifndef _ASM_S390_FPU_API_H -#define _ASM_S390_FPU_API_H - -#include <linux/preempt.h> -#include <asm/asm-extable.h> -#include <asm/fpu/internal.h> - -void save_fpu_regs(void); -void load_fpu_regs(void); -void __load_fpu_regs(void); - -/** - * sfpc_safe - Set floating point control register safely. - * @fpc: new value for floating point control register - * - * Set floating point control register. This may lead to an exception, - * since a saved value may have been modified by user space (ptrace, - * signal return, kvm registers) to an invalid value. In such a case - * set the floating point control register to zero. - */ -static inline void sfpc_safe(u32 fpc) -{ - asm volatile("\n" - "0: sfpc %[fpc]\n" - "1: nopr %%r7\n" - ".pushsection .fixup, \"ax\"\n" - "2: lghi %[fpc],0\n" - " jg 0b\n" - ".popsection\n" - EX_TABLE(1b, 2b) - : [fpc] "+d" (fpc) - : : "memory"); -} - -#define KERNEL_FPC 1 -#define KERNEL_VXR_V0V7 2 -#define KERNEL_VXR_V8V15 4 -#define KERNEL_VXR_V16V23 8 -#define KERNEL_VXR_V24V31 16 - -#define KERNEL_VXR_LOW (KERNEL_VXR_V0V7|KERNEL_VXR_V8V15) -#define KERNEL_VXR_MID (KERNEL_VXR_V8V15|KERNEL_VXR_V16V23) -#define KERNEL_VXR_HIGH (KERNEL_VXR_V16V23|KERNEL_VXR_V24V31) - -#define KERNEL_VXR (KERNEL_VXR_LOW|KERNEL_VXR_HIGH) -#define KERNEL_FPR (KERNEL_FPC|KERNEL_VXR_LOW) - -struct kernel_fpu; - -/* - * Note the functions below must be called with preemption disabled. - * Do not enable preemption before calling __kernel_fpu_end() to prevent - * an corruption of an existing kernel FPU state. - * - * Prefer using the kernel_fpu_begin()/kernel_fpu_end() pair of functions. - */ -void __kernel_fpu_begin(struct kernel_fpu *state, u32 flags); -void __kernel_fpu_end(struct kernel_fpu *state, u32 flags); - - -static inline void kernel_fpu_begin(struct kernel_fpu *state, u32 flags) -{ - preempt_disable(); - state->mask = S390_lowcore.fpu_flags; - if (!test_cpu_flag(CIF_FPU)) - /* Save user space FPU state and register contents */ - save_fpu_regs(); - else if (state->mask & flags) - /* Save FPU/vector register in-use by the kernel */ - __kernel_fpu_begin(state, flags); - S390_lowcore.fpu_flags |= flags; -} - -static inline void kernel_fpu_end(struct kernel_fpu *state, u32 flags) -{ - S390_lowcore.fpu_flags = state->mask; - if (state->mask & flags) - /* Restore FPU/vector register in-use by the kernel */ - __kernel_fpu_end(state, flags); - preempt_enable(); -} - -#endif /* _ASM_S390_FPU_API_H */ diff --git a/arch/s390/include/asm/fpu/internal.h b/arch/s390/include/asm/fpu/internal.h deleted file mode 100644 index d511c4cf5afb..000000000000 --- a/arch/s390/include/asm/fpu/internal.h +++ /dev/null @@ -1,67 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * FPU state and register content conversion primitives - * - * Copyright IBM Corp. 2015 - * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com> - */ - -#ifndef _ASM_S390_FPU_INTERNAL_H -#define _ASM_S390_FPU_INTERNAL_H - -#include <linux/string.h> -#include <asm/facility.h> -#include <asm/fpu/types.h> - -static inline bool cpu_has_vx(void) -{ - return likely(test_facility(129)); -} - -static inline void save_vx_regs(__vector128 *vxrs) -{ - asm volatile( - " la 1,%0\n" - " .word 0xe70f,0x1000,0x003e\n" /* vstm 0,15,0(1) */ - " .word 0xe70f,0x1100,0x0c3e\n" /* vstm 16,31,256(1) */ - : "=Q" (*(struct vx_array *) vxrs) : : "1"); -} - -static inline void convert_vx_to_fp(freg_t *fprs, __vector128 *vxrs) -{ - int i; - - for (i = 0; i < __NUM_FPRS; i++) - fprs[i].ui = vxrs[i].high; -} - -static inline void convert_fp_to_vx(__vector128 *vxrs, freg_t *fprs) -{ - int i; - - for (i = 0; i < __NUM_FPRS; i++) - vxrs[i].high = fprs[i].ui; -} - -static inline void fpregs_store(_s390_fp_regs *fpregs, struct fpu *fpu) -{ - fpregs->pad = 0; - fpregs->fpc = fpu->fpc; - if (cpu_has_vx()) - convert_vx_to_fp((freg_t *)&fpregs->fprs, fpu->vxrs); - else - memcpy((freg_t *)&fpregs->fprs, fpu->fprs, - sizeof(fpregs->fprs)); -} - -static inline void fpregs_load(_s390_fp_regs *fpregs, struct fpu *fpu) -{ - fpu->fpc = fpregs->fpc; - if (cpu_has_vx()) - convert_fp_to_vx(fpu->vxrs, (freg_t *)&fpregs->fprs); - else - memcpy(fpu->fprs, (freg_t *)&fpregs->fprs, - sizeof(fpregs->fprs)); -} - -#endif /* _ASM_S390_FPU_INTERNAL_H */ diff --git a/arch/s390/include/asm/fpu/types.h b/arch/s390/include/asm/fpu/types.h deleted file mode 100644 index d889e9436865..000000000000 --- a/arch/s390/include/asm/fpu/types.h +++ /dev/null @@ -1,38 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * FPU data structures - * - * Copyright IBM Corp. 2015 - * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com> - */ - -#ifndef _ASM_S390_FPU_TYPES_H -#define _ASM_S390_FPU_TYPES_H - -#include <asm/sigcontext.h> - -struct fpu { - __u32 fpc; /* Floating-point control */ - void *regs; /* Pointer to the current save area */ - union { - /* Floating-point register save area */ - freg_t fprs[__NUM_FPRS]; - /* Vector register save area */ - __vector128 vxrs[__NUM_VXRS]; - }; -}; - -/* VX array structure for address operand constraints in inline assemblies */ -struct vx_array { __vector128 _[__NUM_VXRS]; }; - -/* In-kernel FPU state structure */ -struct kernel_fpu { - u32 mask; - u32 fpc; - union { - freg_t fprs[__NUM_FPRS]; - __vector128 vxrs[__NUM_VXRS]; - }; -}; - -#endif /* _ASM_S390_FPU_TYPES_H */ diff --git a/arch/s390/include/asm/jump_label.h b/arch/s390/include/asm/jump_label.h index 895f774bbcc5..bf78cf381dfc 100644 --- a/arch/s390/include/asm/jump_label.h +++ b/arch/s390/include/asm/jump_label.h @@ -25,7 +25,7 @@ */ static __always_inline bool arch_static_branch(struct static_key *key, bool branch) { - asm_volatile_goto("0: brcl 0,%l[label]\n" + asm goto("0: brcl 0,%l[label]\n" ".pushsection __jump_table,\"aw\"\n" ".balign 8\n" ".long 0b-.,%l[label]-.\n" @@ -39,7 +39,7 @@ label: static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch) { - asm_volatile_goto("0: brcl 15,%l[label]\n" + asm goto("0: brcl 15,%l[label]\n" ".pushsection __jump_table,\"aw\"\n" ".balign 8\n" ".long 0b-.,%l[label]-.\n" diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h index 52664105a473..95990461888f 100644 --- a/arch/s390/include/asm/kvm_host.h +++ b/arch/s390/include/asm/kvm_host.h @@ -23,7 +23,7 @@ #include <linux/mmu_notifier.h> #include <asm/debug.h> #include <asm/cpu.h> -#include <asm/fpu/api.h> +#include <asm/fpu.h> #include <asm/isc.h> #include <asm/guarded_storage.h> @@ -743,7 +743,6 @@ struct kvm_vcpu_arch { struct kvm_s390_sie_block *vsie_block; unsigned int host_acrs[NUM_ACRS]; struct gs_cb *host_gscb; - struct fpu host_fpregs; struct kvm_s390_local_interrupt local_int; struct hrtimer ckc_timer; struct kvm_s390_pgm_info pgm; @@ -765,6 +764,8 @@ struct kvm_vcpu_arch { __u64 cputm_start; bool gs_enabled; bool skey_enabled; + /* Indicator if the access registers have been loaded from guest */ + bool acrs_loaded; struct kvm_s390_pv_vcpu pv; union diag318_info diag318_info; }; diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h index 5dc1b6345006..8c5f16857539 100644 --- a/arch/s390/include/asm/lowcore.h +++ b/arch/s390/include/asm/lowcore.h @@ -157,7 +157,7 @@ struct lowcore { __s32 preempt_count; /* 0x03a8 */ __u32 spinlock_lockval; /* 0x03ac */ __u32 spinlock_index; /* 0x03b0 */ - __u32 fpu_flags; /* 0x03b4 */ + __u8 pad_0x03b4[0x03b8-0x03b4]; /* 0x03b4 */ __u64 percpu_offset; /* 0x03b8 */ __u8 pad_0x03c0[0x03c8-0x03c0]; /* 0x03c0 */ __u64 machine_flags; /* 0x03c8 */ diff --git a/arch/s390/include/asm/pai.h b/arch/s390/include/asm/pai.h index 7d1888e3dee6..3f609565734b 100644 --- a/arch/s390/include/asm/pai.h +++ b/arch/s390/include/asm/pai.h @@ -16,7 +16,7 @@ struct qpaci_info_block { u64 header; struct { u64 : 8; - u64 num_cc : 8; /* # of supported crypto counters */ + u64 num_cc : 8; /* # of supported crypto counters */ u64 : 9; u64 num_nnpa : 7; /* # of supported NNPA counters */ u64 : 32; @@ -81,4 +81,5 @@ enum paievt_mode { PAI_MODE_COUNTING, }; +#define PAI_SAVE_AREA(x) ((x)->hw.event_base) #endif diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h index e91cd6bbc330..30820a649e6e 100644 --- a/arch/s390/include/asm/pci.h +++ b/arch/s390/include/asm/pci.h @@ -122,6 +122,7 @@ struct zpci_dev { struct rcu_head rcu; struct hotplug_slot hotplug_slot; + struct mutex state_lock; /* protect state changes */ enum zpci_state state; u32 fid; /* function ID, used by sclp */ u32 fh; /* function handle, used by insn's */ @@ -142,7 +143,6 @@ struct zpci_dev { u8 reserved : 2; unsigned int devfn; /* DEVFN part of the RID*/ - struct mutex lock; u8 pfip[CLP_PFIP_NR_SEGMENTS]; /* pci function internal path */ u32 uid; /* user defined id */ u8 util_str[CLP_UTIL_STR_LEN]; /* utility string */ @@ -170,6 +170,7 @@ struct zpci_dev { u64 dma_mask; /* DMA address space mask */ /* Function measurement block */ + struct mutex fmb_lock; struct zpci_fmb *fmb; u16 fmb_update; /* update interval */ u16 fmb_length; diff --git a/arch/s390/include/asm/physmem_info.h b/arch/s390/include/asm/physmem_info.h index 9e41a74fce9a..e747b067f8db 100644 --- a/arch/s390/include/asm/physmem_info.h +++ b/arch/s390/include/asm/physmem_info.h @@ -22,6 +22,7 @@ enum reserved_range_type { RR_DECOMPRESSOR, RR_INITRD, RR_VMLINUX, + RR_RELOC, RR_AMODE31, RR_IPLREPORT, RR_CERT_COMP_LIST, diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h index c0b6e74d899a..7cf00cf8fb0b 100644 --- a/arch/s390/include/asm/processor.h +++ b/arch/s390/include/asm/processor.h @@ -15,13 +15,11 @@ #include <linux/bits.h> #define CIF_NOHZ_DELAY 2 /* delay HZ disable for a tick */ -#define CIF_FPU 3 /* restore FPU registers */ #define CIF_ENABLED_WAIT 5 /* in enabled wait state */ #define CIF_MCCK_GUEST 6 /* machine check happening in guest */ #define CIF_DEDICATED_CPU 7 /* this CPU is dedicated */ #define _CIF_NOHZ_DELAY BIT(CIF_NOHZ_DELAY) -#define _CIF_FPU BIT(CIF_FPU) #define _CIF_ENABLED_WAIT BIT(CIF_ENABLED_WAIT) #define _CIF_MCCK_GUEST BIT(CIF_MCCK_GUEST) #define _CIF_DEDICATED_CPU BIT(CIF_DEDICATED_CPU) @@ -33,13 +31,12 @@ #include <linux/cpumask.h> #include <linux/linkage.h> #include <linux/irqflags.h> +#include <asm/fpu-types.h> #include <asm/cpu.h> #include <asm/page.h> #include <asm/ptrace.h> #include <asm/setup.h> #include <asm/runtime_instr.h> -#include <asm/fpu/types.h> -#include <asm/fpu/internal.h> #include <asm/irqflags.h> typedef long (*sys_call_ptr_t)(struct pt_regs *regs); @@ -169,6 +166,8 @@ struct thread_struct { unsigned int gmap_write_flag; /* gmap fault write indication */ unsigned int gmap_int_code; /* int code of last gmap fault */ unsigned int gmap_pfault; /* signal of a pending guest pfault */ + int ufpu_flags; /* user fpu flags */ + int kfpu_flags; /* kernel fpu flags */ /* Per-thread information related to debugging */ struct per_regs per_user; /* User specified PER registers */ @@ -184,7 +183,8 @@ struct thread_struct { struct gs_cb *gs_cb; /* Current guarded storage cb */ struct gs_cb *gs_bc_cb; /* Broadcast guarded storage cb */ struct pgm_tdb trap_tdb; /* Transaction abort diagnose block */ - struct fpu fpu; /* FP and VX register save area */ + struct fpu ufpu; /* User FP and VX register save area */ + struct fpu kfpu; /* Kernel FP and VX register save area */ }; /* Flag to disable transactions. */ @@ -203,7 +203,6 @@ typedef struct thread_struct thread_struct; #define INIT_THREAD { \ .ksp = sizeof(init_stack) + (unsigned long) &init_stack, \ - .fpu.regs = (void *) init_task.thread.fpu.fprs, \ .last_break = 1, \ } diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h index d28bf8fb2799..788bc4467445 100644 --- a/arch/s390/include/asm/ptrace.h +++ b/arch/s390/include/asm/ptrace.h @@ -203,6 +203,10 @@ static inline int test_and_clear_pt_regs_flag(struct pt_regs *regs, int flag) return ret; } +struct task_struct; + +void update_cr_regs(struct task_struct *task); + /* * These are defined as per linux/ptrace.h, which see. */ diff --git a/arch/s390/include/asm/stacktrace.h b/arch/s390/include/asm/stacktrace.h index 31ec4f545e03..433fde85b14e 100644 --- a/arch/s390/include/asm/stacktrace.h +++ b/arch/s390/include/asm/stacktrace.h @@ -4,7 +4,6 @@ #include <linux/uaccess.h> #include <linux/ptrace.h> -#include <asm/switch_to.h> struct stack_frame_user { unsigned long back_chain; diff --git a/arch/s390/include/asm/switch_to.h b/arch/s390/include/asm/switch_to.h deleted file mode 100644 index c61b2cc1a8a8..000000000000 --- a/arch/s390/include/asm/switch_to.h +++ /dev/null @@ -1,49 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * Copyright IBM Corp. 1999, 2009 - * - * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> - */ - -#ifndef __ASM_SWITCH_TO_H -#define __ASM_SWITCH_TO_H - -#include <linux/thread_info.h> -#include <asm/fpu/api.h> -#include <asm/ptrace.h> -#include <asm/guarded_storage.h> - -extern struct task_struct *__switch_to(void *, void *); -extern void update_cr_regs(struct task_struct *task); - -static inline void save_access_regs(unsigned int *acrs) -{ - typedef struct { int _[NUM_ACRS]; } acrstype; - - asm volatile("stam 0,15,%0" : "=Q" (*(acrstype *)acrs)); -} - -static inline void restore_access_regs(unsigned int *acrs) -{ - typedef struct { int _[NUM_ACRS]; } acrstype; - - asm volatile("lam 0,15,%0" : : "Q" (*(acrstype *)acrs)); -} - -#define switch_to(prev, next, last) do { \ - /* save_fpu_regs() sets the CIF_FPU flag, which enforces \ - * a restore of the floating point / vector registers as \ - * soon as the next task returns to user space \ - */ \ - save_fpu_regs(); \ - save_access_regs(&prev->thread.acrs[0]); \ - save_ri_cb(prev->thread.ri_cb); \ - save_gs_cb(prev->thread.gs_cb); \ - update_cr_regs(next); \ - restore_access_regs(&next->thread.acrs[0]); \ - restore_ri_cb(next->thread.ri_cb, prev->thread.ri_cb); \ - restore_gs_cb(next->thread.gs_cb); \ - prev = __switch_to(prev, next); \ -} while (0) - -#endif /* __ASM_SWITCH_TO_H */ diff --git a/arch/s390/include/asm/vdso/data.h b/arch/s390/include/asm/vdso/data.h index 73ee89142666..0e2b40ef69b0 100644 --- a/arch/s390/include/asm/vdso/data.h +++ b/arch/s390/include/asm/vdso/data.h @@ -3,7 +3,6 @@ #define __S390_ASM_VDSO_DATA_H #include <linux/types.h> -#include <vdso/datapage.h> struct arch_vdso_data { __s64 tod_steering_delta; diff --git a/arch/s390/include/asm/vx-insn.h b/arch/s390/include/asm/vx-insn.h deleted file mode 100644 index 8c188f1c6d27..000000000000 --- a/arch/s390/include/asm/vx-insn.h +++ /dev/null @@ -1,19 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * Support for Vector Instructions - * - * This wrapper header file allows to use the vector instruction macros in - * both assembler files as well as in inline assemblies in C files. - */ - -#ifndef __ASM_S390_VX_INSN_H -#define __ASM_S390_VX_INSN_H - -#include <asm/vx-insn-asm.h> - -#ifndef __ASSEMBLY__ - -asm(".include \"asm/vx-insn-asm.h\"\n"); - -#endif /* __ASSEMBLY__ */ -#endif /* __ASM_S390_VX_INSN_H */ diff --git a/arch/s390/kernel/cache.c b/arch/s390/kernel/cache.c index 56254fa06f99..4f2669030220 100644 --- a/arch/s390/kernel/cache.c +++ b/arch/s390/kernel/cache.c @@ -166,5 +166,6 @@ int populate_cache_leaves(unsigned int cpu) ci_leaf_init(this_leaf++, pvt, ctype, level, cpu); } } + this_cpu_ci->cpu_map_populated = true; return 0; } diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c index f8fc6c25d051..1942e2a9f8db 100644 --- a/arch/s390/kernel/compat_signal.c +++ b/arch/s390/kernel/compat_signal.c @@ -24,12 +24,12 @@ #include <linux/tty.h> #include <linux/personality.h> #include <linux/binfmts.h> +#include <asm/access-regs.h> #include <asm/ucontext.h> #include <linux/uaccess.h> #include <asm/lowcore.h> -#include <asm/switch_to.h> #include <asm/vdso.h> -#include <asm/fpu/api.h> +#include <asm/fpu.h> #include "compat_linux.h" #include "compat_ptrace.h" #include "entry.h" @@ -56,7 +56,7 @@ typedef struct static void store_sigregs(void) { save_access_regs(current->thread.acrs); - save_fpu_regs(); + save_user_fpu_regs(); } /* Load registers after signal return */ @@ -79,7 +79,7 @@ static int save_sigregs32(struct pt_regs *regs, _sigregs32 __user *sregs) user_sregs.regs.gprs[i] = (__u32) regs->gprs[i]; memcpy(&user_sregs.regs.acrs, current->thread.acrs, sizeof(user_sregs.regs.acrs)); - fpregs_store((_s390_fp_regs *) &user_sregs.fpregs, ¤t->thread.fpu); + fpregs_store((_s390_fp_regs *) &user_sregs.fpregs, ¤t->thread.ufpu); if (__copy_to_user(sregs, &user_sregs, sizeof(_sigregs32))) return -EFAULT; return 0; @@ -113,7 +113,7 @@ static int restore_sigregs32(struct pt_regs *regs,_sigregs32 __user *sregs) regs->gprs[i] = (__u64) user_sregs.regs.gprs[i]; memcpy(¤t->thread.acrs, &user_sregs.regs.acrs, sizeof(current->thread.acrs)); - fpregs_load((_s390_fp_regs *) &user_sregs.fpregs, ¤t->thread.fpu); + fpregs_load((_s390_fp_regs *)&user_sregs.fpregs, ¤t->thread.ufpu); clear_pt_regs_flag(regs, PIF_SYSCALL); /* No longer in a system call */ return 0; @@ -136,11 +136,11 @@ static int save_sigregs_ext32(struct pt_regs *regs, /* Save vector registers to signal stack */ if (cpu_has_vx()) { for (i = 0; i < __NUM_VXRS_LOW; i++) - vxrs[i] = current->thread.fpu.vxrs[i].low; + vxrs[i] = current->thread.ufpu.vxrs[i].low; if (__copy_to_user(&sregs_ext->vxrs_low, vxrs, sizeof(sregs_ext->vxrs_low)) || __copy_to_user(&sregs_ext->vxrs_high, - current->thread.fpu.vxrs + __NUM_VXRS_LOW, + current->thread.ufpu.vxrs + __NUM_VXRS_LOW, sizeof(sregs_ext->vxrs_high))) return -EFAULT; } @@ -165,12 +165,12 @@ static int restore_sigregs_ext32(struct pt_regs *regs, if (cpu_has_vx()) { if (__copy_from_user(vxrs, &sregs_ext->vxrs_low, sizeof(sregs_ext->vxrs_low)) || - __copy_from_user(current->thread.fpu.vxrs + __NUM_VXRS_LOW, + __copy_from_user(current->thread.ufpu.vxrs + __NUM_VXRS_LOW, &sregs_ext->vxrs_high, sizeof(sregs_ext->vxrs_high))) return -EFAULT; for (i = 0; i < __NUM_VXRS_LOW; i++) - current->thread.fpu.vxrs[i].low = vxrs[i]; + current->thread.ufpu.vxrs[i].low = vxrs[i]; } return 0; } @@ -184,7 +184,7 @@ COMPAT_SYSCALL_DEFINE0(sigreturn) if (get_compat_sigset(&set, (compat_sigset_t __user *)frame->sc.oldmask)) goto badframe; set_current_blocked(&set); - save_fpu_regs(); + save_user_fpu_regs(); if (restore_sigregs32(regs, &frame->sregs)) goto badframe; if (restore_sigregs_ext32(regs, &frame->sregs_ext)) @@ -207,7 +207,7 @@ COMPAT_SYSCALL_DEFINE0(rt_sigreturn) set_current_blocked(&set); if (compat_restore_altstack(&frame->uc.uc_stack)) goto badframe; - save_fpu_regs(); + save_user_fpu_regs(); if (restore_sigregs32(regs, &frame->uc.uc_mcontext)) goto badframe; if (restore_sigregs_ext32(regs, &frame->uc.uc_mcontext_ext)) diff --git a/arch/s390/kernel/crash_dump.c b/arch/s390/kernel/crash_dump.c index 5c46c2659305..d09ebb6f5262 100644 --- a/arch/s390/kernel/crash_dump.c +++ b/arch/s390/kernel/crash_dump.c @@ -22,7 +22,7 @@ #include <asm/ipl.h> #include <asm/sclp.h> #include <asm/maccess.h> -#include <asm/fpu/api.h> +#include <asm/fpu.h> #define PTR_ADD(x, y) (((char *) (x)) + ((unsigned long) (y))) #define PTR_SUB(x, y) (((char *) (x)) - ((unsigned long) (y))) diff --git a/arch/s390/kernel/diag.c b/arch/s390/kernel/diag.c index 92fdc35f028c..8dee9aa0ec95 100644 --- a/arch/s390/kernel/diag.c +++ b/arch/s390/kernel/diag.c @@ -147,11 +147,40 @@ void notrace diag_stat_inc_norecursion(enum diag_stat_enum nr) EXPORT_SYMBOL(diag_stat_inc_norecursion); /* + * Diagnose 0c: Pseudo Timer + */ +void diag0c(struct hypfs_diag0c_entry *data) +{ + diag_stat_inc(DIAG_STAT_X00C); + diag_amode31_ops.diag0c(virt_to_phys(data)); +} + +/* * Diagnose 14: Input spool file manipulation + * + * The subcode parameter determines the type of the first parameter rx. + * Currently used are the following 3 subcommands: + * 0x0: Read the Next Spool File Buffer (Data Record) + * 0x28: Position a Spool File to the Designated Record + * 0xfff: Retrieve Next File Descriptor + * + * For subcommands 0x0 and 0xfff, the value of the first parameter is + * a virtual address of a memory buffer and needs virtual to physical + * address translation. For other subcommands the rx parameter is not + * a virtual address. */ int diag14(unsigned long rx, unsigned long ry1, unsigned long subcode) { diag_stat_inc(DIAG_STAT_X014); + switch (subcode) { + case 0x0: + case 0xfff: + rx = virt_to_phys((void *)rx); + break; + default: + /* Do nothing */ + break; + } return diag_amode31_ops.diag14(rx, ry1, subcode); } EXPORT_SYMBOL(diag14); @@ -265,6 +294,6 @@ EXPORT_SYMBOL(diag224); int diag26c(void *req, void *resp, enum diag26c_sc subcode) { diag_stat_inc(DIAG_STAT_X26C); - return diag_amode31_ops.diag26c(req, resp, subcode); + return diag_amode31_ops.diag26c(virt_to_phys(req), virt_to_phys(resp), subcode); } EXPORT_SYMBOL(diag26c); diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c index 2345ea332b97..c666271433fb 100644 --- a/arch/s390/kernel/early.c +++ b/arch/s390/kernel/early.c @@ -19,8 +19,10 @@ #include <linux/kernel.h> #include <asm/asm-extable.h> #include <linux/memblock.h> +#include <asm/access-regs.h> #include <asm/diag.h> #include <asm/ebcdic.h> +#include <asm/fpu.h> #include <asm/ipl.h> #include <asm/lowcore.h> #include <asm/processor.h> @@ -31,7 +33,6 @@ #include <asm/sclp.h> #include <asm/facility.h> #include <asm/boot_data.h> -#include <asm/switch_to.h> #include "entry.h" #define decompressor_handled_param(param) \ diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index 49a11f6dd7ae..fc5277eab554 100644 --- a/arch/s390/kernel/entry.S +++ b/arch/s390/kernel/entry.S @@ -24,7 +24,7 @@ #include <asm/page.h> #include <asm/sigp.h> #include <asm/irq.h> -#include <asm/vx-insn.h> +#include <asm/fpu-insn.h> #include <asm/setup.h> #include <asm/nmi.h> #include <asm/nospec-insn.h> @@ -171,13 +171,13 @@ _LPP_OFFSET = __LC_LPP nop 0 /* - * Scheduler resume function, called by switch_to - * gpr2 = (task_struct *) prev - * gpr3 = (task_struct *) next + * Scheduler resume function, called by __switch_to + * gpr2 = (task_struct *)prev + * gpr3 = (task_struct *)next * Returns: * gpr2 = prev */ -SYM_FUNC_START(__switch_to) +SYM_FUNC_START(__switch_to_asm) stmg %r6,%r15,__SF_GPRS(%r15) # store gprs of prev task lghi %r4,__TASK_stack lghi %r1,__TASK_thread @@ -193,7 +193,7 @@ SYM_FUNC_START(__switch_to) lmg %r6,%r15,__SF_GPRS(%r15) # load gprs of next task ALTERNATIVE "nop", "lpp _LPP_OFFSET", 40 BR_EX %r14 -SYM_FUNC_END(__switch_to) +SYM_FUNC_END(__switch_to_asm) #if IS_ENABLED(CONFIG_KVM) /* @@ -220,8 +220,6 @@ SYM_FUNC_START(__sie64a) oi __SIE_PROG0C+3(%r14),1 # we are going into SIE now tm __SIE_PROG20+3(%r14),3 # last exit... jnz .Lsie_skip - TSTMSK __LC_CPU_FLAGS,_CIF_FPU - jo .Lsie_skip # exit if fp/vx regs changed lg %r14,__SF_SIE_CONTROL_PHYS(%r15) # get sie block phys addr BPEXIT __SF_SIE_FLAGS(%r15),_TIF_ISOLATE_BP_GUEST .Lsie_entry: @@ -489,16 +487,11 @@ SYM_FUNC_END(psw_idle) */ SYM_CODE_START(mcck_int_handler) BPOFF - la %r1,4095 # validate r1 - spt __LC_CPU_TIMER_SAVE_AREA-4095(%r1) # validate cpu timer - LBEAR __LC_LAST_BREAK_SAVE_AREA-4095(%r1) # validate bear - lmg %r0,%r15,__LC_GPREGS_SAVE_AREA # validate gprs lmg %r8,%r9,__LC_MCK_OLD_PSW TSTMSK __LC_MCCK_CODE,MCCK_CODE_SYSTEM_DAMAGE jo .Lmcck_panic # yes -> rest of mcck code invalid TSTMSK __LC_MCCK_CODE,MCCK_CODE_CR_VALID jno .Lmcck_panic # control registers invalid -> panic - lctlg %c0,%c15,__LC_CREGS_SAVE_AREA # validate ctl regs ptlb lghi %r14,__LC_CPU_TIMER_SAVE_AREA mvc __LC_MCCK_ENTER_TIMER(8),0(%r14) diff --git a/arch/s390/kernel/entry.h b/arch/s390/kernel/entry.h index 9f41853f36b9..21969520f947 100644 --- a/arch/s390/kernel/entry.h +++ b/arch/s390/kernel/entry.h @@ -19,6 +19,7 @@ void mcck_int_handler(void); void restart_int_handler(void); void early_pgm_check_handler(void); +struct task_struct *__switch_to_asm(struct task_struct *prev, struct task_struct *next); void __ret_from_fork(struct task_struct *prev, struct pt_regs *regs); void __do_pgm_check(struct pt_regs *regs); void __do_syscall(struct pt_regs *regs, int per_trap); diff --git a/arch/s390/kernel/fpu.c b/arch/s390/kernel/fpu.c index a4f3449cc814..fa90bbdc5ef9 100644 --- a/arch/s390/kernel/fpu.c +++ b/arch/s390/kernel/fpu.c @@ -8,256 +8,186 @@ #include <linux/kernel.h> #include <linux/cpu.h> #include <linux/sched.h> -#include <asm/fpu/types.h> -#include <asm/fpu/api.h> -#include <asm/vx-insn.h> +#include <asm/fpu.h> -void __kernel_fpu_begin(struct kernel_fpu *state, u32 flags) +void __kernel_fpu_begin(struct kernel_fpu *state, int flags) { + __vector128 *vxrs = state->vxrs; + int mask; + /* * Limit the save to the FPU/vector registers already - * in use by the previous context + * in use by the previous context. */ - flags &= state->mask; - + flags &= state->hdr.mask; if (flags & KERNEL_FPC) - /* Save floating point control */ - asm volatile("stfpc %0" : "=Q" (state->fpc)); - + fpu_stfpc(&state->hdr.fpc); if (!cpu_has_vx()) { - if (flags & KERNEL_VXR_V0V7) { - /* Save floating-point registers */ - asm volatile("std 0,%0" : "=Q" (state->fprs[0])); - asm volatile("std 1,%0" : "=Q" (state->fprs[1])); - asm volatile("std 2,%0" : "=Q" (state->fprs[2])); - asm volatile("std 3,%0" : "=Q" (state->fprs[3])); - asm volatile("std 4,%0" : "=Q" (state->fprs[4])); - asm volatile("std 5,%0" : "=Q" (state->fprs[5])); - asm volatile("std 6,%0" : "=Q" (state->fprs[6])); - asm volatile("std 7,%0" : "=Q" (state->fprs[7])); - asm volatile("std 8,%0" : "=Q" (state->fprs[8])); - asm volatile("std 9,%0" : "=Q" (state->fprs[9])); - asm volatile("std 10,%0" : "=Q" (state->fprs[10])); - asm volatile("std 11,%0" : "=Q" (state->fprs[11])); - asm volatile("std 12,%0" : "=Q" (state->fprs[12])); - asm volatile("std 13,%0" : "=Q" (state->fprs[13])); - asm volatile("std 14,%0" : "=Q" (state->fprs[14])); - asm volatile("std 15,%0" : "=Q" (state->fprs[15])); - } + if (flags & KERNEL_VXR_LOW) + save_fp_regs_vx(vxrs); return; } - - /* Test and save vector registers */ - asm volatile ( - /* - * Test if any vector register must be saved and, if so, - * test if all register can be saved. - */ - " la 1,%[vxrs]\n" /* load save area */ - " tmll %[m],30\n" /* KERNEL_VXR */ - " jz 7f\n" /* no work -> done */ - " jo 5f\n" /* -> save V0..V31 */ - /* - * Test for special case KERNEL_FPU_MID only. In this - * case a vstm V8..V23 is the best instruction - */ - " chi %[m],12\n" /* KERNEL_VXR_MID */ - " jne 0f\n" /* -> save V8..V23 */ - " VSTM 8,23,128,1\n" /* vstm %v8,%v23,128(%r1) */ - " j 7f\n" - /* Test and save the first half of 16 vector registers */ - "0: tmll %[m],6\n" /* KERNEL_VXR_LOW */ - " jz 3f\n" /* -> KERNEL_VXR_HIGH */ - " jo 2f\n" /* 11 -> save V0..V15 */ - " brc 2,1f\n" /* 10 -> save V8..V15 */ - " VSTM 0,7,0,1\n" /* vstm %v0,%v7,0(%r1) */ - " j 3f\n" - "1: VSTM 8,15,128,1\n" /* vstm %v8,%v15,128(%r1) */ - " j 3f\n" - "2: VSTM 0,15,0,1\n" /* vstm %v0,%v15,0(%r1) */ - /* Test and save the second half of 16 vector registers */ - "3: tmll %[m],24\n" /* KERNEL_VXR_HIGH */ - " jz 7f\n" - " jo 6f\n" /* 11 -> save V16..V31 */ - " brc 2,4f\n" /* 10 -> save V24..V31 */ - " VSTM 16,23,256,1\n" /* vstm %v16,%v23,256(%r1) */ - " j 7f\n" - "4: VSTM 24,31,384,1\n" /* vstm %v24,%v31,384(%r1) */ - " j 7f\n" - "5: VSTM 0,15,0,1\n" /* vstm %v0,%v15,0(%r1) */ - "6: VSTM 16,31,256,1\n" /* vstm %v16,%v31,256(%r1) */ - "7:" - : [vxrs] "=Q" (*(struct vx_array *) &state->vxrs) - : [m] "d" (flags) - : "1", "cc"); + mask = flags & KERNEL_VXR; + if (mask == KERNEL_VXR) { + vxrs += fpu_vstm(0, 15, vxrs); + vxrs += fpu_vstm(16, 31, vxrs); + return; + } + if (mask == KERNEL_VXR_MID) { + vxrs += fpu_vstm(8, 23, vxrs); + return; + } + mask = flags & KERNEL_VXR_LOW; + if (mask) { + if (mask == KERNEL_VXR_LOW) + vxrs += fpu_vstm(0, 15, vxrs); + else if (mask == KERNEL_VXR_V0V7) + vxrs += fpu_vstm(0, 7, vxrs); + else + vxrs += fpu_vstm(8, 15, vxrs); + } + mask = flags & KERNEL_VXR_HIGH; + if (mask) { + if (mask == KERNEL_VXR_HIGH) + vxrs += fpu_vstm(16, 31, vxrs); + else if (mask == KERNEL_VXR_V16V23) + vxrs += fpu_vstm(16, 23, vxrs); + else + vxrs += fpu_vstm(24, 31, vxrs); + } } EXPORT_SYMBOL(__kernel_fpu_begin); -void __kernel_fpu_end(struct kernel_fpu *state, u32 flags) +void __kernel_fpu_end(struct kernel_fpu *state, int flags) { + __vector128 *vxrs = state->vxrs; + int mask; + /* * Limit the restore to the FPU/vector registers of the - * previous context that have been overwritte by the - * current context + * previous context that have been overwritten by the + * current context. */ - flags &= state->mask; - + flags &= state->hdr.mask; if (flags & KERNEL_FPC) - /* Restore floating-point controls */ - asm volatile("lfpc %0" : : "Q" (state->fpc)); - + fpu_lfpc(&state->hdr.fpc); if (!cpu_has_vx()) { - if (flags & KERNEL_VXR_V0V7) { - /* Restore floating-point registers */ - asm volatile("ld 0,%0" : : "Q" (state->fprs[0])); - asm volatile("ld 1,%0" : : "Q" (state->fprs[1])); - asm volatile("ld 2,%0" : : "Q" (state->fprs[2])); - asm volatile("ld 3,%0" : : "Q" (state->fprs[3])); - asm volatile("ld 4,%0" : : "Q" (state->fprs[4])); - asm volatile("ld 5,%0" : : "Q" (state->fprs[5])); - asm volatile("ld 6,%0" : : "Q" (state->fprs[6])); - asm volatile("ld 7,%0" : : "Q" (state->fprs[7])); - asm volatile("ld 8,%0" : : "Q" (state->fprs[8])); - asm volatile("ld 9,%0" : : "Q" (state->fprs[9])); - asm volatile("ld 10,%0" : : "Q" (state->fprs[10])); - asm volatile("ld 11,%0" : : "Q" (state->fprs[11])); - asm volatile("ld 12,%0" : : "Q" (state->fprs[12])); - asm volatile("ld 13,%0" : : "Q" (state->fprs[13])); - asm volatile("ld 14,%0" : : "Q" (state->fprs[14])); - asm volatile("ld 15,%0" : : "Q" (state->fprs[15])); - } + if (flags & KERNEL_VXR_LOW) + load_fp_regs_vx(vxrs); return; } - - /* Test and restore (load) vector registers */ - asm volatile ( - /* - * Test if any vector register must be loaded and, if so, - * test if all registers can be loaded at once. - */ - " la 1,%[vxrs]\n" /* load restore area */ - " tmll %[m],30\n" /* KERNEL_VXR */ - " jz 7f\n" /* no work -> done */ - " jo 5f\n" /* -> restore V0..V31 */ - /* - * Test for special case KERNEL_FPU_MID only. In this - * case a vlm V8..V23 is the best instruction - */ - " chi %[m],12\n" /* KERNEL_VXR_MID */ - " jne 0f\n" /* -> restore V8..V23 */ - " VLM 8,23,128,1\n" /* vlm %v8,%v23,128(%r1) */ - " j 7f\n" - /* Test and restore the first half of 16 vector registers */ - "0: tmll %[m],6\n" /* KERNEL_VXR_LOW */ - " jz 3f\n" /* -> KERNEL_VXR_HIGH */ - " jo 2f\n" /* 11 -> restore V0..V15 */ - " brc 2,1f\n" /* 10 -> restore V8..V15 */ - " VLM 0,7,0,1\n" /* vlm %v0,%v7,0(%r1) */ - " j 3f\n" - "1: VLM 8,15,128,1\n" /* vlm %v8,%v15,128(%r1) */ - " j 3f\n" - "2: VLM 0,15,0,1\n" /* vlm %v0,%v15,0(%r1) */ - /* Test and restore the second half of 16 vector registers */ - "3: tmll %[m],24\n" /* KERNEL_VXR_HIGH */ - " jz 7f\n" - " jo 6f\n" /* 11 -> restore V16..V31 */ - " brc 2,4f\n" /* 10 -> restore V24..V31 */ - " VLM 16,23,256,1\n" /* vlm %v16,%v23,256(%r1) */ - " j 7f\n" - "4: VLM 24,31,384,1\n" /* vlm %v24,%v31,384(%r1) */ - " j 7f\n" - "5: VLM 0,15,0,1\n" /* vlm %v0,%v15,0(%r1) */ - "6: VLM 16,31,256,1\n" /* vlm %v16,%v31,256(%r1) */ - "7:" - : [vxrs] "=Q" (*(struct vx_array *) &state->vxrs) - : [m] "d" (flags) - : "1", "cc"); + mask = flags & KERNEL_VXR; + if (mask == KERNEL_VXR) { + vxrs += fpu_vlm(0, 15, vxrs); + vxrs += fpu_vlm(16, 31, vxrs); + return; + } + if (mask == KERNEL_VXR_MID) { + vxrs += fpu_vlm(8, 23, vxrs); + return; + } + mask = flags & KERNEL_VXR_LOW; + if (mask) { + if (mask == KERNEL_VXR_LOW) + vxrs += fpu_vlm(0, 15, vxrs); + else if (mask == KERNEL_VXR_V0V7) + vxrs += fpu_vlm(0, 7, vxrs); + else + vxrs += fpu_vlm(8, 15, vxrs); + } + mask = flags & KERNEL_VXR_HIGH; + if (mask) { + if (mask == KERNEL_VXR_HIGH) + vxrs += fpu_vlm(16, 31, vxrs); + else if (mask == KERNEL_VXR_V16V23) + vxrs += fpu_vlm(16, 23, vxrs); + else + vxrs += fpu_vlm(24, 31, vxrs); + } } EXPORT_SYMBOL(__kernel_fpu_end); -void __load_fpu_regs(void) +void load_fpu_state(struct fpu *state, int flags) { - unsigned long *regs = current->thread.fpu.regs; - struct fpu *state = ¤t->thread.fpu; + __vector128 *vxrs = &state->vxrs[0]; + int mask; - sfpc_safe(state->fpc); - if (likely(cpu_has_vx())) { - asm volatile("lgr 1,%0\n" - "VLM 0,15,0,1\n" - "VLM 16,31,256,1\n" - : - : "d" (regs) - : "1", "cc", "memory"); - } else { - asm volatile("ld 0,%0" : : "Q" (regs[0])); - asm volatile("ld 1,%0" : : "Q" (regs[1])); - asm volatile("ld 2,%0" : : "Q" (regs[2])); - asm volatile("ld 3,%0" : : "Q" (regs[3])); - asm volatile("ld 4,%0" : : "Q" (regs[4])); - asm volatile("ld 5,%0" : : "Q" (regs[5])); - asm volatile("ld 6,%0" : : "Q" (regs[6])); - asm volatile("ld 7,%0" : : "Q" (regs[7])); - asm volatile("ld 8,%0" : : "Q" (regs[8])); - asm volatile("ld 9,%0" : : "Q" (regs[9])); - asm volatile("ld 10,%0" : : "Q" (regs[10])); - asm volatile("ld 11,%0" : : "Q" (regs[11])); - asm volatile("ld 12,%0" : : "Q" (regs[12])); - asm volatile("ld 13,%0" : : "Q" (regs[13])); - asm volatile("ld 14,%0" : : "Q" (regs[14])); - asm volatile("ld 15,%0" : : "Q" (regs[15])); + if (flags & KERNEL_FPC) + fpu_lfpc(&state->fpc); + if (!cpu_has_vx()) { + if (flags & KERNEL_VXR_V0V7) + load_fp_regs_vx(state->vxrs); + return; + } + mask = flags & KERNEL_VXR; + if (mask == KERNEL_VXR) { + fpu_vlm(0, 15, &vxrs[0]); + fpu_vlm(16, 31, &vxrs[16]); + return; + } + if (mask == KERNEL_VXR_MID) { + fpu_vlm(8, 23, &vxrs[8]); + return; + } + mask = flags & KERNEL_VXR_LOW; + if (mask) { + if (mask == KERNEL_VXR_LOW) + fpu_vlm(0, 15, &vxrs[0]); + else if (mask == KERNEL_VXR_V0V7) + fpu_vlm(0, 7, &vxrs[0]); + else + fpu_vlm(8, 15, &vxrs[8]); + } + mask = flags & KERNEL_VXR_HIGH; + if (mask) { + if (mask == KERNEL_VXR_HIGH) + fpu_vlm(16, 31, &vxrs[16]); + else if (mask == KERNEL_VXR_V16V23) + fpu_vlm(16, 23, &vxrs[16]); + else + fpu_vlm(24, 31, &vxrs[24]); } - clear_cpu_flag(CIF_FPU); -} - -void load_fpu_regs(void) -{ - raw_local_irq_disable(); - __load_fpu_regs(); - raw_local_irq_enable(); } -EXPORT_SYMBOL(load_fpu_regs); -void save_fpu_regs(void) +void save_fpu_state(struct fpu *state, int flags) { - unsigned long flags, *regs; - struct fpu *state; - - local_irq_save(flags); + __vector128 *vxrs = &state->vxrs[0]; + int mask; - if (test_cpu_flag(CIF_FPU)) - goto out; - - state = ¤t->thread.fpu; - regs = current->thread.fpu.regs; - - asm volatile("stfpc %0" : "=Q" (state->fpc)); - if (likely(cpu_has_vx())) { - asm volatile("lgr 1,%0\n" - "VSTM 0,15,0,1\n" - "VSTM 16,31,256,1\n" - : - : "d" (regs) - : "1", "cc", "memory"); - } else { - asm volatile("std 0,%0" : "=Q" (regs[0])); - asm volatile("std 1,%0" : "=Q" (regs[1])); - asm volatile("std 2,%0" : "=Q" (regs[2])); - asm volatile("std 3,%0" : "=Q" (regs[3])); - asm volatile("std 4,%0" : "=Q" (regs[4])); - asm volatile("std 5,%0" : "=Q" (regs[5])); - asm volatile("std 6,%0" : "=Q" (regs[6])); - asm volatile("std 7,%0" : "=Q" (regs[7])); - asm volatile("std 8,%0" : "=Q" (regs[8])); - asm volatile("std 9,%0" : "=Q" (regs[9])); - asm volatile("std 10,%0" : "=Q" (regs[10])); - asm volatile("std 11,%0" : "=Q" (regs[11])); - asm volatile("std 12,%0" : "=Q" (regs[12])); - asm volatile("std 13,%0" : "=Q" (regs[13])); - asm volatile("std 14,%0" : "=Q" (regs[14])); - asm volatile("std 15,%0" : "=Q" (regs[15])); + if (flags & KERNEL_FPC) + fpu_stfpc(&state->fpc); + if (!cpu_has_vx()) { + if (flags & KERNEL_VXR_LOW) + save_fp_regs_vx(state->vxrs); + return; + } + mask = flags & KERNEL_VXR; + if (mask == KERNEL_VXR) { + fpu_vstm(0, 15, &vxrs[0]); + fpu_vstm(16, 31, &vxrs[16]); + return; + } + if (mask == KERNEL_VXR_MID) { + fpu_vstm(8, 23, &vxrs[8]); + return; + } + mask = flags & KERNEL_VXR_LOW; + if (mask) { + if (mask == KERNEL_VXR_LOW) + fpu_vstm(0, 15, &vxrs[0]); + else if (mask == KERNEL_VXR_V0V7) + fpu_vstm(0, 7, &vxrs[0]); + else + fpu_vstm(8, 15, &vxrs[8]); + } + mask = flags & KERNEL_VXR_HIGH; + if (mask) { + if (mask == KERNEL_VXR_HIGH) + fpu_vstm(16, 31, &vxrs[16]); + else if (mask == KERNEL_VXR_V16V23) + fpu_vstm(16, 23, &vxrs[16]); + else + fpu_vstm(24, 31, &vxrs[24]); } - set_cpu_flag(CIF_FPU); -out: - local_irq_restore(flags); } -EXPORT_SYMBOL(save_fpu_regs); +EXPORT_SYMBOL(save_fpu_state); diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c index ba75f6bee774..1486350a4177 100644 --- a/arch/s390/kernel/ipl.c +++ b/arch/s390/kernel/ipl.c @@ -1941,8 +1941,7 @@ static void dump_reipl_run(struct shutdown_trigger *trigger) reipl_type == IPL_TYPE_UNKNOWN) os_info_flags |= OS_INFO_FLAG_REIPL_CLEAR; os_info_entry_add(OS_INFO_FLAGS_ENTRY, &os_info_flags, sizeof(os_info_flags)); - csum = (__force unsigned int) - csum_partial(reipl_block_actual, reipl_block_actual->hdr.len, 0); + csum = (__force unsigned int)cksm(reipl_block_actual, reipl_block_actual->hdr.len, 0); abs_lc = get_abs_lowcore(); abs_lc->ipib = __pa(reipl_block_actual); abs_lc->ipib_checksum = csum; diff --git a/arch/s390/kernel/machine_kexec.c b/arch/s390/kernel/machine_kexec.c index aa22ffc16bcd..c5d0c1cf984b 100644 --- a/arch/s390/kernel/machine_kexec.c +++ b/arch/s390/kernel/machine_kexec.c @@ -13,8 +13,10 @@ #include <linux/reboot.h> #include <linux/ftrace.h> #include <linux/debug_locks.h> +#include <asm/guarded_storage.h> #include <asm/pfault.h> #include <asm/cio.h> +#include <asm/fpu.h> #include <asm/setup.h> #include <asm/smp.h> #include <asm/ipl.h> @@ -26,7 +28,6 @@ #include <asm/os_info.h> #include <asm/set_memory.h> #include <asm/stacktrace.h> -#include <asm/switch_to.h> #include <asm/nmi.h> #include <asm/sclp.h> diff --git a/arch/s390/kernel/nmi.c b/arch/s390/kernel/nmi.c index 9ad44c26d1a2..c77382a67325 100644 --- a/arch/s390/kernel/nmi.c +++ b/arch/s390/kernel/nmi.c @@ -23,16 +23,14 @@ #include <linux/export.h> #include <asm/lowcore.h> #include <asm/ctlreg.h> +#include <asm/fpu.h> #include <asm/smp.h> #include <asm/stp.h> #include <asm/cputime.h> #include <asm/nmi.h> #include <asm/crw.h> -#include <asm/switch_to.h> #include <asm/asm-offsets.h> #include <asm/pai.h> -#include <asm/vx-insn.h> -#include <asm/fpu/api.h> struct mcck_struct { unsigned int kill_task : 1; @@ -204,133 +202,63 @@ void s390_handle_mcck(void) } } -/* - * returns 0 if register contents could be validated - * returns 1 otherwise +/** + * nmi_registers_valid - verify if registers are valid + * @mci: machine check interruption code + * + * Inspect a machine check interruption code and verify if all required + * registers are valid. For some registers the corresponding validity bit is + * ignored and the registers are set to the expected value. + * Returns true if all registers are valid, otherwise false. */ -static int notrace s390_validate_registers(union mci mci) +static bool notrace nmi_registers_valid(union mci mci) { - struct mcesa *mcesa; - void *fpt_save_area; union ctlreg2 cr2; - int kill_task; - u64 zero; - - kill_task = 0; - zero = 0; - - if (!mci.gr || !mci.fp) - kill_task = 1; - fpt_save_area = &S390_lowcore.floating_pt_save_area; - if (!mci.fc) { - kill_task = 1; - asm volatile( - " lfpc %0\n" - : - : "Q" (zero)); - } else { - asm volatile( - " lfpc %0\n" - : - : "Q" (S390_lowcore.fpt_creg_save_area)); - } - mcesa = __va(S390_lowcore.mcesad & MCESA_ORIGIN_MASK); - if (!cpu_has_vx()) { - /* Validate floating point registers */ - asm volatile( - " ld 0,0(%0)\n" - " ld 1,8(%0)\n" - " ld 2,16(%0)\n" - " ld 3,24(%0)\n" - " ld 4,32(%0)\n" - " ld 5,40(%0)\n" - " ld 6,48(%0)\n" - " ld 7,56(%0)\n" - " ld 8,64(%0)\n" - " ld 9,72(%0)\n" - " ld 10,80(%0)\n" - " ld 11,88(%0)\n" - " ld 12,96(%0)\n" - " ld 13,104(%0)\n" - " ld 14,112(%0)\n" - " ld 15,120(%0)\n" - : - : "a" (fpt_save_area) - : "memory"); - } else { - /* Validate vector registers */ - union ctlreg0 cr0; - - /* - * The vector validity must only be checked if not running a - * KVM guest. For KVM guests the machine check is forwarded by - * KVM and it is the responsibility of the guest to take - * appropriate actions. The host vector or FPU values have been - * saved by KVM and will be restored by KVM. - */ - if (!mci.vr && !test_cpu_flag(CIF_MCCK_GUEST)) - kill_task = 1; - cr0.reg = S390_lowcore.cregs_save_area[0]; - cr0.afp = cr0.vx = 1; - local_ctl_load(0, &cr0.reg); - asm volatile( - " la 1,%0\n" - " VLM 0,15,0,1\n" - " VLM 16,31,256,1\n" - : - : "Q" (*(struct vx_array *)mcesa->vector_save_area) - : "1"); - local_ctl_load(0, &S390_lowcore.cregs_save_area[0]); - } - /* Validate access registers */ - asm volatile( - " lam 0,15,0(%0)\n" - : - : "a" (&S390_lowcore.access_regs_save_area) - : "memory"); - if (!mci.ar) - kill_task = 1; - /* Validate guarded storage registers */ - cr2.reg = S390_lowcore.cregs_save_area[2]; - if (cr2.gse) { - if (!mci.gs) { - /* - * 2 cases: - * - machine check in kernel or userspace - * - machine check while running SIE (KVM guest) - * For kernel or userspace the userspace values of - * guarded storage control can not be recreated, the - * process must be terminated. - * For SIE the guest values of guarded storage can not - * be recreated. This is either due to a bug or due to - * GS being disabled in the guest. The guest will be - * notified by KVM code and the guests machine check - * handling must take care of this. The host values - * are saved by KVM and are not affected. - */ - if (!test_cpu_flag(CIF_MCCK_GUEST)) - kill_task = 1; - } else { - load_gs_cb((struct gs_cb *)mcesa->guarded_storage_save_area); - } - } /* - * The getcpu vdso syscall reads CPU number from the programmable + * The getcpu vdso syscall reads the CPU number from the programmable * field of the TOD clock. Disregard the TOD programmable register - * validity bit and load the CPU number into the TOD programmable - * field unconditionally. + * validity bit and load the CPU number into the TOD programmable field + * unconditionally. */ set_tod_programmable_field(raw_smp_processor_id()); - /* Validate clock comparator register */ + /* + * Set the clock comparator register to the next expected value. + */ set_clock_comparator(S390_lowcore.clock_comparator); - + if (!mci.gr || !mci.fp || !mci.fc) + return false; + /* + * The vector validity must only be checked if not running a + * KVM guest. For KVM guests the machine check is forwarded by + * KVM and it is the responsibility of the guest to take + * appropriate actions. The host vector or FPU values have been + * saved by KVM and will be restored by KVM. + */ + if (!mci.vr && !test_cpu_flag(CIF_MCCK_GUEST)) + return false; + if (!mci.ar) + return false; + /* + * Two cases for guarded storage registers: + * - machine check in kernel or userspace + * - machine check while running SIE (KVM guest) + * For kernel or userspace the userspace values of guarded storage + * control can not be recreated, the process must be terminated. + * For SIE the guest values of guarded storage can not be recreated. + * This is either due to a bug or due to GS being disabled in the + * guest. The guest will be notified by KVM code and the guests machine + * check handling must take care of this. The host values are saved by + * KVM and are not affected. + */ + cr2.reg = S390_lowcore.cregs_save_area[2]; + if (cr2.gse && !mci.gs && !test_cpu_flag(CIF_MCCK_GUEST)) + return false; if (!mci.ms || !mci.pm || !mci.ia) - kill_task = 1; - - return kill_task; + return false; + return true; } -NOKPROBE_SYMBOL(s390_validate_registers); +NOKPROBE_SYMBOL(nmi_registers_valid); /* * Backup the guest's machine check info to its description block @@ -428,7 +356,7 @@ void notrace s390_do_machine_check(struct pt_regs *regs) s390_handle_damage(); } } - if (s390_validate_registers(mci)) { + if (!nmi_registers_valid(mci)) { if (!user_mode(regs)) s390_handle_damage(); /* diff --git a/arch/s390/kernel/os_info.c b/arch/s390/kernel/os_info.c index 6e1824141b29..a801e6bd5341 100644 --- a/arch/s390/kernel/os_info.c +++ b/arch/s390/kernel/os_info.c @@ -29,7 +29,7 @@ static struct os_info os_info __page_aligned_data; u32 os_info_csum(struct os_info *os_info) { int size = sizeof(*os_info) - offsetof(struct os_info, version_major); - return (__force u32)csum_partial(&os_info->version_major, size, 0); + return (__force u32)cksm(&os_info->version_major, size, 0); } /* @@ -49,7 +49,7 @@ void os_info_entry_add(int nr, void *ptr, u64 size) { os_info.entry[nr].addr = __pa(ptr); os_info.entry[nr].size = size; - os_info.entry[nr].csum = (__force u32)csum_partial(ptr, size, 0); + os_info.entry[nr].csum = (__force u32)cksm(ptr, size, 0); os_info.csum = os_info_csum(&os_info); } @@ -98,7 +98,7 @@ static void os_info_old_alloc(int nr, int align) msg = "copy failed"; goto fail_free; } - csum = (__force u32)csum_partial(buf_align, size, 0); + csum = (__force u32)cksm(buf_align, size, 0); if (csum != os_info_old->entry[nr].csum) { msg = "checksum failed"; goto fail_free; diff --git a/arch/s390/kernel/perf_pai_crypto.c b/arch/s390/kernel/perf_pai_crypto.c index bf8a672b15a4..823d652e3917 100644 --- a/arch/s390/kernel/perf_pai_crypto.c +++ b/arch/s390/kernel/perf_pai_crypto.c @@ -98,6 +98,7 @@ static void paicrypt_event_destroy(struct perf_event *event) event->attr.config, event->cpu, cpump->active_events, cpump->mode, refcount_read(&cpump->refcnt)); + free_page(PAI_SAVE_AREA(event)); if (refcount_dec_and_test(&cpump->refcnt)) { debug_sprintf_event(cfm_dbg, 4, "%s page %#lx save %p\n", __func__, (unsigned long)cpump->page, @@ -260,6 +261,7 @@ static int paicrypt_event_init(struct perf_event *event) { struct perf_event_attr *a = &event->attr; struct paicrypt_map *cpump; + int rc = 0; /* PAI crypto PMU registered as PERF_TYPE_RAW, check event type */ if (a->type != PERF_TYPE_RAW && event->pmu->type != a->type) @@ -274,10 +276,21 @@ static int paicrypt_event_init(struct perf_event *event) /* Allow only CRYPTO_ALL for sampling. */ if (a->sample_period && a->config != PAI_CRYPTO_BASE) return -EINVAL; + /* Get a page to store last counter values for sampling */ + if (a->sample_period) { + PAI_SAVE_AREA(event) = get_zeroed_page(GFP_KERNEL); + if (!PAI_SAVE_AREA(event)) { + rc = -ENOMEM; + goto out; + } + } cpump = paicrypt_busy(event); - if (IS_ERR(cpump)) - return PTR_ERR(cpump); + if (IS_ERR(cpump)) { + free_page(PAI_SAVE_AREA(event)); + rc = PTR_ERR(cpump); + goto out; + } event->destroy = paicrypt_event_destroy; @@ -293,7 +306,8 @@ static int paicrypt_event_init(struct perf_event *event) } static_branch_inc(&pai_key); - return 0; +out: + return rc; } static void paicrypt_read(struct perf_event *event) @@ -310,20 +324,15 @@ static void paicrypt_read(struct perf_event *event) static void paicrypt_start(struct perf_event *event, int flags) { + struct paicrypt_mapptr *mp = this_cpu_ptr(paicrypt_root.mapptr); + struct paicrypt_map *cpump = mp->mapptr; u64 sum; - /* Event initialization sets last_tag to 0. When later on the events - * are deleted and re-added, do not reset the event count value to zero. - * Events are added, deleted and re-added when 2 or more events - * are active at the same time. - */ if (!event->attr.sample_period) { /* Counting */ - if (!event->hw.last_tag) { - event->hw.last_tag = 1; - sum = paicrypt_getall(event); /* Get current value */ - local64_set(&event->hw.prev_count, sum); - } + sum = paicrypt_getall(event); /* Get current value */ + local64_set(&event->hw.prev_count, sum); } else { /* Sampling */ + cpump->event = event; perf_sched_cb_inc(event->pmu); } } @@ -339,7 +348,6 @@ static int paicrypt_add(struct perf_event *event, int flags) WRITE_ONCE(S390_lowcore.ccd, ccd); local_ctl_set_bit(0, CR0_CRYPTOGRAPHY_COUNTER_BIT); } - cpump->event = event; if (flags & PERF_EF_START) paicrypt_start(event, PERF_EF_RELOAD); event->hw.state = 0; @@ -367,23 +375,34 @@ static void paicrypt_del(struct perf_event *event, int flags) } } -/* Create raw data and save it in buffer. Returns number of bytes copied. - * Saves only positive counter entries of the form +/* Create raw data and save it in buffer. Calculate the delta for each + * counter between this invocation and the last invocation. + * Returns number of bytes copied. + * Saves only entries with positive counter difference of the form * 2 bytes: Number of counter * 8 bytes: Value of counter */ static size_t paicrypt_copy(struct pai_userdata *userdata, unsigned long *page, - bool exclude_user, bool exclude_kernel) + unsigned long *page_old, bool exclude_user, + bool exclude_kernel) { int i, outidx = 0; for (i = 1; i <= paicrypt_cnt; i++) { - u64 val = 0; + u64 val = 0, val_old = 0; - if (!exclude_kernel) + if (!exclude_kernel) { val += paicrypt_getctr(page, i, true); - if (!exclude_user) + val_old += paicrypt_getctr(page_old, i, true); + } + if (!exclude_user) { val += paicrypt_getctr(page, i, false); + val_old += paicrypt_getctr(page_old, i, false); + } + if (val >= val_old) + val -= val_old; + else + val = (~0ULL - val_old) + val + 1; if (val) { userdata[outidx].num = i; userdata[outidx].value = val; @@ -426,8 +445,8 @@ static int paicrypt_push_sample(size_t rawsize, struct paicrypt_map *cpump, overflow = perf_event_overflow(event, &data, ®s); perf_event_update_userpage(event); - /* Clear lowcore page after read */ - memset(cpump->page, 0, PAGE_SIZE); + /* Save crypto counter lowcore page after reading event data. */ + memcpy((void *)PAI_SAVE_AREA(event), cpump->page, PAGE_SIZE); return overflow; } @@ -443,6 +462,7 @@ static int paicrypt_have_sample(void) if (!event) /* No event active */ return 0; rawsize = paicrypt_copy(cpump->save, cpump->page, + (unsigned long *)PAI_SAVE_AREA(event), cpump->event->attr.exclude_user, cpump->event->attr.exclude_kernel); if (rawsize) /* No incremented counters */ @@ -694,6 +714,12 @@ static int __init attr_event_init_one(struct attribute **attrs, int num) { struct perf_pmu_events_attr *pa; + /* Index larger than array_size, no counter name available */ + if (num >= ARRAY_SIZE(paicrypt_ctrnames)) { + attrs[num] = NULL; + return 0; + } + pa = kzalloc(sizeof(*pa), GFP_KERNEL); if (!pa) return -ENOMEM; @@ -714,14 +740,13 @@ static int __init attr_event_init(void) struct attribute **attrs; int ret, i; - attrs = kmalloc_array(ARRAY_SIZE(paicrypt_ctrnames) + 1, sizeof(*attrs), - GFP_KERNEL); + attrs = kmalloc_array(paicrypt_cnt + 2, sizeof(*attrs), GFP_KERNEL); if (!attrs) return -ENOMEM; - for (i = 0; i < ARRAY_SIZE(paicrypt_ctrnames); i++) { + for (i = 0; i <= paicrypt_cnt; i++) { ret = attr_event_init_one(attrs, i); if (ret) { - attr_event_free(attrs, i - 1); + attr_event_free(attrs, i); return ret; } } @@ -742,8 +767,10 @@ static int __init paicrypt_init(void) paicrypt_cnt = ib.num_cc; if (paicrypt_cnt == 0) return 0; - if (paicrypt_cnt >= PAI_CRYPTO_MAXCTR) - paicrypt_cnt = PAI_CRYPTO_MAXCTR - 1; + if (paicrypt_cnt >= PAI_CRYPTO_MAXCTR) { + pr_err("Too many PMU pai_crypto counters %d\n", paicrypt_cnt); + return -E2BIG; + } rc = attr_event_init(); /* Export known PAI crypto events */ if (rc) { diff --git a/arch/s390/kernel/perf_pai_ext.c b/arch/s390/kernel/perf_pai_ext.c index af7f2b538c8f..616a25606cd6 100644 --- a/arch/s390/kernel/perf_pai_ext.c +++ b/arch/s390/kernel/perf_pai_ext.c @@ -120,6 +120,7 @@ static void paiext_event_destroy(struct perf_event *event) struct paiext_mapptr *mp = per_cpu_ptr(paiext_root.mapptr, event->cpu); struct paiext_map *cpump = mp->mapptr; + free_page(PAI_SAVE_AREA(event)); mutex_lock(&paiext_reserve_mutex); cpump->event = NULL; if (refcount_dec_and_test(&cpump->refcnt)) /* Last reference gone */ @@ -202,7 +203,6 @@ static int paiext_alloc(struct perf_event_attr *a, struct perf_event *event) } rc = 0; - cpump->event = event; undo: if (rc) { @@ -256,10 +256,18 @@ static int paiext_event_init(struct perf_event *event) /* Prohibit exclude_user event selection */ if (a->exclude_user) return -EINVAL; + /* Get a page to store last counter values for sampling */ + if (a->sample_period) { + PAI_SAVE_AREA(event) = get_zeroed_page(GFP_KERNEL); + if (!PAI_SAVE_AREA(event)) + return -ENOMEM; + } rc = paiext_alloc(a, event); - if (rc) + if (rc) { + free_page(PAI_SAVE_AREA(event)); return rc; + } event->destroy = paiext_event_destroy; if (a->sample_period) { @@ -319,15 +327,15 @@ static void paiext_read(struct perf_event *event) static void paiext_start(struct perf_event *event, int flags) { + struct paiext_mapptr *mp = this_cpu_ptr(paiext_root.mapptr); + struct paiext_map *cpump = mp->mapptr; u64 sum; if (!event->attr.sample_period) { /* Counting */ - if (!event->hw.last_tag) { - event->hw.last_tag = 1; - sum = paiext_getall(event); /* Get current value */ - local64_set(&event->hw.prev_count, sum); - } + sum = paiext_getall(event); /* Get current value */ + local64_set(&event->hw.prev_count, sum); } else { /* Sampling */ + cpump->event = event; perf_sched_cb_inc(event->pmu); } } @@ -346,7 +354,6 @@ static int paiext_add(struct perf_event *event, int flags) debug_sprintf_event(paiext_dbg, 4, "%s 1508 %llx acc %llx\n", __func__, S390_lowcore.aicd, pcb->acc); } - cpump->event = event; if (flags & PERF_EF_START) paiext_start(event, PERF_EF_RELOAD); event->hw.state = 0; @@ -384,13 +391,19 @@ static void paiext_del(struct perf_event *event, int flags) * 2 bytes: Number of counter * 8 bytes: Value of counter */ -static size_t paiext_copy(struct pai_userdata *userdata, unsigned long *area) +static size_t paiext_copy(struct pai_userdata *userdata, unsigned long *area, + unsigned long *area_old) { int i, outidx = 0; for (i = 1; i <= paiext_cnt; i++) { u64 val = paiext_getctr(area, i); + u64 val_old = paiext_getctr(area_old, i); + if (val >= val_old) + val -= val_old; + else + val = (~0ULL - val_old) + val + 1; if (val) { userdata[outidx].num = i; userdata[outidx].value = val; @@ -446,8 +459,9 @@ static int paiext_push_sample(size_t rawsize, struct paiext_map *cpump, overflow = perf_event_overflow(event, &data, ®s); perf_event_update_userpage(event); - /* Clear lowcore area after read */ - memset(cpump->area, 0, PAIE1_CTRBLOCK_SZ); + /* Save NNPA lowcore area after read in event */ + memcpy((void *)PAI_SAVE_AREA(event), cpump->area, + PAIE1_CTRBLOCK_SZ); return overflow; } @@ -462,7 +476,8 @@ static int paiext_have_sample(void) if (!event) return 0; - rawsize = paiext_copy(cpump->save, cpump->area); + rawsize = paiext_copy(cpump->save, cpump->area, + (unsigned long *)PAI_SAVE_AREA(event)); if (rawsize) /* Incremented counters */ rc = paiext_push_sample(rawsize, cpump, event); return rc; @@ -584,6 +599,12 @@ static int __init attr_event_init_one(struct attribute **attrs, int num) { struct perf_pmu_events_attr *pa; + /* Index larger than array_size, no counter name available */ + if (num >= ARRAY_SIZE(paiext_ctrnames)) { + attrs[num] = NULL; + return 0; + } + pa = kzalloc(sizeof(*pa), GFP_KERNEL); if (!pa) return -ENOMEM; @@ -604,14 +625,13 @@ static int __init attr_event_init(void) struct attribute **attrs; int ret, i; - attrs = kmalloc_array(ARRAY_SIZE(paiext_ctrnames) + 1, sizeof(*attrs), - GFP_KERNEL); + attrs = kmalloc_array(paiext_cnt + 2, sizeof(*attrs), GFP_KERNEL); if (!attrs) return -ENOMEM; - for (i = 0; i < ARRAY_SIZE(paiext_ctrnames); i++) { + for (i = 0; i <= paiext_cnt; i++) { ret = attr_event_init_one(attrs, i); if (ret) { - attr_event_free(attrs, i - 1); + attr_event_free(attrs, i); return ret; } } diff --git a/arch/s390/kernel/perf_regs.c b/arch/s390/kernel/perf_regs.c index 3d93656bd948..a6b058ee4a36 100644 --- a/arch/s390/kernel/perf_regs.c +++ b/arch/s390/kernel/perf_regs.c @@ -5,8 +5,7 @@ #include <linux/errno.h> #include <linux/bug.h> #include <asm/ptrace.h> -#include <asm/fpu/api.h> -#include <asm/fpu/types.h> +#include <asm/fpu.h> u64 perf_reg_value(struct pt_regs *regs, int idx) { @@ -20,10 +19,7 @@ u64 perf_reg_value(struct pt_regs *regs, int idx) return 0; idx -= PERF_REG_S390_FP0; - if (cpu_has_vx()) - fp = *(freg_t *)(current->thread.fpu.vxrs + idx); - else - fp = current->thread.fpu.fprs[idx]; + fp = *(freg_t *)(current->thread.ufpu.vxrs + idx); return fp.ui; } @@ -65,6 +61,6 @@ void perf_get_regs_user(struct perf_regs *regs_user, */ regs_user->regs = task_pt_regs(current); if (user_mode(regs_user->regs)) - save_fpu_regs(); + save_user_fpu_regs(); regs_user->abi = perf_reg_abi(current); } diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c index 4e3b366589fb..dd456b475861 100644 --- a/arch/s390/kernel/process.c +++ b/arch/s390/kernel/process.c @@ -31,15 +31,19 @@ #include <linux/init_task.h> #include <linux/entry-common.h> #include <linux/io.h> +#include <asm/guarded_storage.h> +#include <asm/access-regs.h> +#include <asm/switch_to.h> #include <asm/cpu_mf.h> #include <asm/processor.h> +#include <asm/ptrace.h> #include <asm/vtimer.h> #include <asm/exec.h> +#include <asm/fpu.h> #include <asm/irq.h> #include <asm/nmi.h> #include <asm/smp.h> #include <asm/stacktrace.h> -#include <asm/switch_to.h> #include <asm/runtime_instr.h> #include <asm/unwind.h> #include "entry.h" @@ -84,13 +88,13 @@ int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src) { /* * Save the floating-point or vector register state of the current - * task and set the CIF_FPU flag to lazy restore the FPU register + * task and set the TIF_FPU flag to lazy restore the FPU register * state when returning to user space. */ - save_fpu_regs(); + save_user_fpu_regs(); *dst = *src; - dst->thread.fpu.regs = dst->thread.fpu.fprs; + dst->thread.kfpu_flags = 0; /* * Don't transfer over the runtime instrumentation or the guarded @@ -186,8 +190,23 @@ int copy_thread(struct task_struct *p, const struct kernel_clone_args *args) void execve_tail(void) { - current->thread.fpu.fpc = 0; - asm volatile("sfpc %0" : : "d" (0)); + current->thread.ufpu.fpc = 0; + fpu_sfpc(0); +} + +struct task_struct *__switch_to(struct task_struct *prev, struct task_struct *next) +{ + save_user_fpu_regs(); + save_kernel_fpu_regs(&prev->thread); + save_access_regs(&prev->thread.acrs[0]); + save_ri_cb(prev->thread.ri_cb); + save_gs_cb(prev->thread.gs_cb); + update_cr_regs(next); + restore_kernel_fpu_regs(&next->thread); + restore_access_regs(&next->thread.acrs[0]); + restore_ri_cb(next->thread.ri_cb, prev->thread.ri_cb); + restore_gs_cb(next->thread.gs_cb); + return __switch_to_asm(prev, next); } unsigned long __get_wchan(struct task_struct *p) diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c index f1897a8bb221..1cfed8b710b8 100644 --- a/arch/s390/kernel/ptrace.c +++ b/arch/s390/kernel/ptrace.c @@ -24,13 +24,14 @@ #include <linux/seccomp.h> #include <linux/compat.h> #include <trace/syscall.h> +#include <asm/guarded_storage.h> +#include <asm/access-regs.h> #include <asm/page.h> #include <linux/uaccess.h> #include <asm/unistd.h> -#include <asm/switch_to.h> #include <asm/runtime_instr.h> #include <asm/facility.h> -#include <asm/fpu/api.h> +#include <asm/fpu.h> #include "entry.h" @@ -246,22 +247,15 @@ static unsigned long __peek_user(struct task_struct *child, addr_t addr) /* * floating point control reg. is in the thread structure */ - tmp = child->thread.fpu.fpc; + tmp = child->thread.ufpu.fpc; tmp <<= BITS_PER_LONG - 32; } else if (addr < offsetof(struct user, regs.fp_regs) + sizeof(s390_fp_regs)) { /* - * floating point regs. are either in child->thread.fpu - * or the child->thread.fpu.vxrs array + * floating point regs. are in the child->thread.ufpu.vxrs array */ offset = addr - offsetof(struct user, regs.fp_regs.fprs); - if (cpu_has_vx()) - tmp = *(addr_t *) - ((addr_t) child->thread.fpu.vxrs + 2*offset); - else - tmp = *(addr_t *) - ((addr_t) child->thread.fpu.fprs + offset); - + tmp = *(addr_t *)((addr_t)child->thread.ufpu.vxrs + 2 * offset); } else if (addr < offsetof(struct user, regs.per_info) + sizeof(per_struct)) { /* * Handle access to the per_info structure. @@ -395,21 +389,14 @@ static int __poke_user(struct task_struct *child, addr_t addr, addr_t data) */ if ((unsigned int)data != 0) return -EINVAL; - child->thread.fpu.fpc = data >> (BITS_PER_LONG - 32); + child->thread.ufpu.fpc = data >> (BITS_PER_LONG - 32); } else if (addr < offsetof(struct user, regs.fp_regs) + sizeof(s390_fp_regs)) { /* - * floating point regs. are either in child->thread.fpu - * or the child->thread.fpu.vxrs array + * floating point regs. are in the child->thread.ufpu.vxrs array */ offset = addr - offsetof(struct user, regs.fp_regs.fprs); - if (cpu_has_vx()) - *(addr_t *)((addr_t) - child->thread.fpu.vxrs + 2*offset) = data; - else - *(addr_t *)((addr_t) - child->thread.fpu.fprs + offset) = data; - + *(addr_t *)((addr_t)child->thread.ufpu.vxrs + 2 * offset) = data; } else if (addr < offsetof(struct user, regs.per_info) + sizeof(per_struct)) { /* * Handle access to the per_info structure. @@ -622,21 +609,14 @@ static u32 __peek_user_compat(struct task_struct *child, addr_t addr) /* * floating point control reg. is in the thread structure */ - tmp = child->thread.fpu.fpc; + tmp = child->thread.ufpu.fpc; } else if (addr < offsetof(struct compat_user, regs.fp_regs) + sizeof(s390_fp_regs)) { /* - * floating point regs. are either in child->thread.fpu - * or the child->thread.fpu.vxrs array + * floating point regs. are in the child->thread.ufpu.vxrs array */ offset = addr - offsetof(struct compat_user, regs.fp_regs.fprs); - if (cpu_has_vx()) - tmp = *(__u32 *) - ((addr_t) child->thread.fpu.vxrs + 2*offset); - else - tmp = *(__u32 *) - ((addr_t) child->thread.fpu.fprs + offset); - + tmp = *(__u32 *)((addr_t)child->thread.ufpu.vxrs + 2 * offset); } else if (addr < offsetof(struct compat_user, regs.per_info) + sizeof(struct compat_per_struct_kernel)) { /* * Handle access to the per_info structure. @@ -748,21 +728,14 @@ static int __poke_user_compat(struct task_struct *child, /* * floating point control reg. is in the thread structure */ - child->thread.fpu.fpc = data; + child->thread.ufpu.fpc = data; } else if (addr < offsetof(struct compat_user, regs.fp_regs) + sizeof(s390_fp_regs)) { /* - * floating point regs. are either in child->thread.fpu - * or the child->thread.fpu.vxrs array + * floating point regs. are in the child->thread.ufpu.vxrs array */ offset = addr - offsetof(struct compat_user, regs.fp_regs.fprs); - if (cpu_has_vx()) - *(__u32 *)((addr_t) - child->thread.fpu.vxrs + 2*offset) = tmp; - else - *(__u32 *)((addr_t) - child->thread.fpu.fprs + offset) = tmp; - + *(__u32 *)((addr_t)child->thread.ufpu.vxrs + 2 * offset) = tmp; } else if (addr < offsetof(struct compat_user, regs.per_info) + sizeof(struct compat_per_struct_kernel)) { /* * Handle access to the per_info structure. @@ -893,10 +866,10 @@ static int s390_fpregs_get(struct task_struct *target, _s390_fp_regs fp_regs; if (target == current) - save_fpu_regs(); + save_user_fpu_regs(); - fp_regs.fpc = target->thread.fpu.fpc; - fpregs_store(&fp_regs, &target->thread.fpu); + fp_regs.fpc = target->thread.ufpu.fpc; + fpregs_store(&fp_regs, &target->thread.ufpu); return membuf_write(&to, &fp_regs, sizeof(fp_regs)); } @@ -910,22 +883,17 @@ static int s390_fpregs_set(struct task_struct *target, freg_t fprs[__NUM_FPRS]; if (target == current) - save_fpu_regs(); - - if (cpu_has_vx()) - convert_vx_to_fp(fprs, target->thread.fpu.vxrs); - else - memcpy(&fprs, target->thread.fpu.fprs, sizeof(fprs)); - + save_user_fpu_regs(); + convert_vx_to_fp(fprs, target->thread.ufpu.vxrs); if (count > 0 && pos < offsetof(s390_fp_regs, fprs)) { - u32 ufpc[2] = { target->thread.fpu.fpc, 0 }; + u32 ufpc[2] = { target->thread.ufpu.fpc, 0 }; rc = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &ufpc, 0, offsetof(s390_fp_regs, fprs)); if (rc) return rc; if (ufpc[1] != 0) return -EINVAL; - target->thread.fpu.fpc = ufpc[0]; + target->thread.ufpu.fpc = ufpc[0]; } if (rc == 0 && count > 0) @@ -933,12 +901,7 @@ static int s390_fpregs_set(struct task_struct *target, fprs, offsetof(s390_fp_regs, fprs), -1); if (rc) return rc; - - if (cpu_has_vx()) - convert_fp_to_vx(target->thread.fpu.vxrs, fprs); - else - memcpy(target->thread.fpu.fprs, &fprs, sizeof(fprs)); - + convert_fp_to_vx(target->thread.ufpu.vxrs, fprs); return rc; } @@ -988,9 +951,9 @@ static int s390_vxrs_low_get(struct task_struct *target, if (!cpu_has_vx()) return -ENODEV; if (target == current) - save_fpu_regs(); + save_user_fpu_regs(); for (i = 0; i < __NUM_VXRS_LOW; i++) - vxrs[i] = target->thread.fpu.vxrs[i].low; + vxrs[i] = target->thread.ufpu.vxrs[i].low; return membuf_write(&to, vxrs, sizeof(vxrs)); } @@ -1005,15 +968,15 @@ static int s390_vxrs_low_set(struct task_struct *target, if (!cpu_has_vx()) return -ENODEV; if (target == current) - save_fpu_regs(); + save_user_fpu_regs(); for (i = 0; i < __NUM_VXRS_LOW; i++) - vxrs[i] = target->thread.fpu.vxrs[i].low; + vxrs[i] = target->thread.ufpu.vxrs[i].low; rc = user_regset_copyin(&pos, &count, &kbuf, &ubuf, vxrs, 0, -1); if (rc == 0) for (i = 0; i < __NUM_VXRS_LOW; i++) - target->thread.fpu.vxrs[i].low = vxrs[i]; + target->thread.ufpu.vxrs[i].low = vxrs[i]; return rc; } @@ -1025,8 +988,8 @@ static int s390_vxrs_high_get(struct task_struct *target, if (!cpu_has_vx()) return -ENODEV; if (target == current) - save_fpu_regs(); - return membuf_write(&to, target->thread.fpu.vxrs + __NUM_VXRS_LOW, + save_user_fpu_regs(); + return membuf_write(&to, target->thread.ufpu.vxrs + __NUM_VXRS_LOW, __NUM_VXRS_HIGH * sizeof(__vector128)); } @@ -1040,10 +1003,10 @@ static int s390_vxrs_high_set(struct task_struct *target, if (!cpu_has_vx()) return -ENODEV; if (target == current) - save_fpu_regs(); + save_user_fpu_regs(); rc = user_regset_copyin(&pos, &count, &kbuf, &ubuf, - target->thread.fpu.vxrs + __NUM_VXRS_LOW, 0, -1); + target->thread.ufpu.vxrs + __NUM_VXRS_LOW, 0, -1); return rc; } diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index d1f3b56e7afc..24ed33f044ec 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -504,12 +504,12 @@ static void __init setup_resources(void) int j; u64 i; - code_resource.start = (unsigned long) _text; - code_resource.end = (unsigned long) _etext - 1; - data_resource.start = (unsigned long) _etext; - data_resource.end = (unsigned long) _edata - 1; - bss_resource.start = (unsigned long) __bss_start; - bss_resource.end = (unsigned long) __bss_stop - 1; + code_resource.start = __pa_symbol(_text); + code_resource.end = __pa_symbol(_etext) - 1; + data_resource.start = __pa_symbol(_etext); + data_resource.end = __pa_symbol(_edata) - 1; + bss_resource.start = __pa_symbol(__bss_start); + bss_resource.end = __pa_symbol(__bss_stop) - 1; for_each_mem_range(i, &start, &end) { res = memblock_alloc(sizeof(*res), 8); diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c index 43e9661cd715..6c2cb345402f 100644 --- a/arch/s390/kernel/signal.c +++ b/arch/s390/kernel/signal.c @@ -30,8 +30,8 @@ #include <linux/compat.h> #include <asm/ucontext.h> #include <linux/uaccess.h> +#include <asm/access-regs.h> #include <asm/lowcore.h> -#include <asm/switch_to.h> #include <asm/vdso.h> #include "entry.h" @@ -109,7 +109,7 @@ struct rt_sigframe static void store_sigregs(void) { save_access_regs(current->thread.acrs); - save_fpu_regs(); + save_user_fpu_regs(); } /* Load registers after signal return */ @@ -131,7 +131,7 @@ static int save_sigregs(struct pt_regs *regs, _sigregs __user *sregs) memcpy(&user_sregs.regs.gprs, ®s->gprs, sizeof(sregs->regs.gprs)); memcpy(&user_sregs.regs.acrs, current->thread.acrs, sizeof(user_sregs.regs.acrs)); - fpregs_store(&user_sregs.fpregs, ¤t->thread.fpu); + fpregs_store(&user_sregs.fpregs, ¤t->thread.ufpu); if (__copy_to_user(sregs, &user_sregs, sizeof(_sigregs))) return -EFAULT; return 0; @@ -165,7 +165,7 @@ static int restore_sigregs(struct pt_regs *regs, _sigregs __user *sregs) memcpy(¤t->thread.acrs, &user_sregs.regs.acrs, sizeof(current->thread.acrs)); - fpregs_load(&user_sregs.fpregs, ¤t->thread.fpu); + fpregs_load(&user_sregs.fpregs, ¤t->thread.ufpu); clear_pt_regs_flag(regs, PIF_SYSCALL); /* No longer in a system call */ return 0; @@ -181,11 +181,11 @@ static int save_sigregs_ext(struct pt_regs *regs, /* Save vector registers to signal stack */ if (cpu_has_vx()) { for (i = 0; i < __NUM_VXRS_LOW; i++) - vxrs[i] = current->thread.fpu.vxrs[i].low; + vxrs[i] = current->thread.ufpu.vxrs[i].low; if (__copy_to_user(&sregs_ext->vxrs_low, vxrs, sizeof(sregs_ext->vxrs_low)) || __copy_to_user(&sregs_ext->vxrs_high, - current->thread.fpu.vxrs + __NUM_VXRS_LOW, + current->thread.ufpu.vxrs + __NUM_VXRS_LOW, sizeof(sregs_ext->vxrs_high))) return -EFAULT; } @@ -202,12 +202,12 @@ static int restore_sigregs_ext(struct pt_regs *regs, if (cpu_has_vx()) { if (__copy_from_user(vxrs, &sregs_ext->vxrs_low, sizeof(sregs_ext->vxrs_low)) || - __copy_from_user(current->thread.fpu.vxrs + __NUM_VXRS_LOW, + __copy_from_user(current->thread.ufpu.vxrs + __NUM_VXRS_LOW, &sregs_ext->vxrs_high, sizeof(sregs_ext->vxrs_high))) return -EFAULT; for (i = 0; i < __NUM_VXRS_LOW; i++) - current->thread.fpu.vxrs[i].low = vxrs[i]; + current->thread.ufpu.vxrs[i].low = vxrs[i]; } return 0; } @@ -222,7 +222,7 @@ SYSCALL_DEFINE0(sigreturn) if (__copy_from_user(&set.sig, &frame->sc.oldmask, _SIGMASK_COPY_SIZE)) goto badframe; set_current_blocked(&set); - save_fpu_regs(); + save_user_fpu_regs(); if (restore_sigregs(regs, &frame->sregs)) goto badframe; if (restore_sigregs_ext(regs, &frame->sregs_ext)) @@ -246,7 +246,7 @@ SYSCALL_DEFINE0(rt_sigreturn) set_current_blocked(&set); if (restore_altstack(&frame->uc.uc_stack)) goto badframe; - save_fpu_regs(); + save_user_fpu_regs(); if (restore_sigregs(regs, &frame->uc.uc_mcontext)) goto badframe; if (restore_sigregs_ext(regs, &frame->uc.uc_mcontext_ext)) diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index c39d9f0d4b1c..0324649aae0a 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -36,12 +36,13 @@ #include <linux/sched/task_stack.h> #include <linux/crash_dump.h> #include <linux/kprobes.h> +#include <asm/access-regs.h> #include <asm/asm-offsets.h> #include <asm/ctlreg.h> #include <asm/pfault.h> #include <asm/diag.h> -#include <asm/switch_to.h> #include <asm/facility.h> +#include <asm/fpu.h> #include <asm/ipl.h> #include <asm/setup.h> #include <asm/irq.h> diff --git a/arch/s390/kernel/sysinfo.c b/arch/s390/kernel/sysinfo.c index f6f8f498c9be..1b1be3110cfc 100644 --- a/arch/s390/kernel/sysinfo.c +++ b/arch/s390/kernel/sysinfo.c @@ -20,7 +20,7 @@ #include <asm/sysinfo.h> #include <asm/cpcmd.h> #include <asm/topology.h> -#include <asm/fpu/api.h> +#include <asm/fpu.h> int topology_max_mnest; @@ -426,9 +426,9 @@ subsys_initcall(create_proc_service_level); */ void s390_adjust_jiffies(void) { + DECLARE_KERNEL_FPU_ONSTACK16(fpu); struct sysinfo_1_2_2 *info; unsigned long capability; - struct kernel_fpu fpu; info = (void *) get_zeroed_page(GFP_KERNEL); if (!info) @@ -447,21 +447,14 @@ void s390_adjust_jiffies(void) * point division .. */ kernel_fpu_begin(&fpu, KERNEL_FPR); - asm volatile( - " sfpc %3\n" - " l %0,%1\n" - " tmlh %0,0xff80\n" - " jnz 0f\n" - " cefbr %%f2,%0\n" - " j 1f\n" - "0: le %%f2,%1\n" - "1: cefbr %%f0,%2\n" - " debr %%f0,%%f2\n" - " cgebr %0,5,%%f0\n" - : "=&d" (capability) - : "Q" (info->capability), "d" (10000000), "d" (0) - : "cc" - ); + fpu_sfpc(0); + if (info->capability & 0xff800000) + fpu_ldgr(2, info->capability); + else + fpu_cefbr(2, info->capability); + fpu_cefbr(0, 10000000); + fpu_debr(0, 2); + capability = fpu_cgebr(0, 5); kernel_fpu_end(&fpu, KERNEL_FPR); } else /* diff --git a/arch/s390/kernel/text_amode31.S b/arch/s390/kernel/text_amode31.S index 14c6d25c035f..c0a70efa2426 100644 --- a/arch/s390/kernel/text_amode31.S +++ b/arch/s390/kernel/text_amode31.S @@ -90,7 +90,7 @@ SYM_FUNC_START(_diag26c_amode31) SYM_FUNC_END(_diag26c_amode31) /* - * void _diag0c_amode31(struct hypfs_diag0c_entry *entry) + * void _diag0c_amode31(unsigned long rx) */ SYM_FUNC_START(_diag0c_amode31) sam31 diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c index 14abad953c02..fb9f31f36628 100644 --- a/arch/s390/kernel/time.c +++ b/arch/s390/kernel/time.c @@ -251,8 +251,8 @@ static struct clocksource clocksource_tod = { .rating = 400, .read = read_tod_clock, .mask = CLOCKSOURCE_MASK(64), - .mult = 1000, - .shift = 12, + .mult = 4096000, + .shift = 24, .flags = CLOCK_SOURCE_IS_CONTINUOUS, .vdso_clock_mode = VDSO_CLOCKMODE_TOD, }; @@ -716,7 +716,7 @@ out_unlock: /* * STP subsys sysfs interface functions */ -static struct bus_type stp_subsys = { +static const struct bus_type stp_subsys = { .name = "stp", .dev_name = "stp", }; diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c index 46dac4540ca8..52578b5cecbd 100644 --- a/arch/s390/kernel/traps.c +++ b/arch/s390/kernel/traps.c @@ -28,8 +28,8 @@ #include <linux/cpu.h> #include <linux/entry-common.h> #include <asm/asm-extable.h> -#include <asm/fpu/api.h> #include <asm/vtime.h> +#include <asm/fpu.h> #include "entry.h" static inline void __user *get_trap_ip(struct pt_regs *regs) @@ -201,8 +201,8 @@ static void vector_exception(struct pt_regs *regs) } /* get vector interrupt code from fpc */ - save_fpu_regs(); - vic = (current->thread.fpu.fpc & 0xf00) >> 8; + save_user_fpu_regs(); + vic = (current->thread.ufpu.fpc & 0xf00) >> 8; switch (vic) { case 1: /* invalid vector operation */ si_code = FPE_FLTINV; @@ -227,9 +227,9 @@ static void vector_exception(struct pt_regs *regs) static void data_exception(struct pt_regs *regs) { - save_fpu_regs(); - if (current->thread.fpu.fpc & FPC_DXC_MASK) - do_fp_trap(regs, current->thread.fpu.fpc); + save_user_fpu_regs(); + if (current->thread.ufpu.fpc & FPC_DXC_MASK) + do_fp_trap(regs, current->thread.ufpu.fpc); else do_trap(regs, SIGILL, ILL_ILLOPN, "data exception"); } diff --git a/arch/s390/kernel/uprobes.c b/arch/s390/kernel/uprobes.c index b88345ef8bd9..5b0633ea8d93 100644 --- a/arch/s390/kernel/uprobes.c +++ b/arch/s390/kernel/uprobes.c @@ -12,7 +12,6 @@ #include <linux/kdebug.h> #include <linux/sched/task_stack.h> -#include <asm/switch_to.h> #include <asm/facility.h> #include <asm/kprobes.h> #include <asm/dis.h> diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c index bbaefd84f15e..a45b3a4c91db 100644 --- a/arch/s390/kernel/vdso.c +++ b/arch/s390/kernel/vdso.c @@ -25,10 +25,7 @@ extern char vdso32_start[], vdso32_end[]; static struct vm_special_mapping vvar_mapping; -static union { - struct vdso_data data[CS_BASES]; - u8 page[PAGE_SIZE]; -} vdso_data_store __page_aligned_data; +static union vdso_data_store vdso_data_store __page_aligned_data; struct vdso_data *vdso_data = vdso_data_store.data; diff --git a/arch/s390/kernel/vdso32/Makefile b/arch/s390/kernel/vdso32/Makefile index caec7db6f966..b12a274cbb47 100644 --- a/arch/s390/kernel/vdso32/Makefile +++ b/arch/s390/kernel/vdso32/Makefile @@ -22,7 +22,7 @@ KBUILD_CFLAGS_32 := $(filter-out -m64,$(KBUILD_CFLAGS)) KBUILD_CFLAGS_32 := $(filter-out -mno-pic-data-is-text-relative,$(KBUILD_CFLAGS_32)) KBUILD_CFLAGS_32 += -m31 -fPIC -shared -fno-common -fno-builtin -LDFLAGS_vdso32.so.dbg += -fPIC -shared -soname=linux-vdso32.so.1 \ +LDFLAGS_vdso32.so.dbg += -shared -soname=linux-vdso32.so.1 \ --hash-style=both --build-id=sha1 -melf_s390 -T $(targets:%=$(obj)/%.dbg): KBUILD_CFLAGS = $(KBUILD_CFLAGS_32) diff --git a/arch/s390/kernel/vdso32/vdso32.lds.S b/arch/s390/kernel/vdso32/vdso32.lds.S index edf5ff1debe1..65b9513a5a0e 100644 --- a/arch/s390/kernel/vdso32/vdso32.lds.S +++ b/arch/s390/kernel/vdso32/vdso32.lds.S @@ -9,7 +9,6 @@ OUTPUT_FORMAT("elf32-s390", "elf32-s390", "elf32-s390") OUTPUT_ARCH(s390:31-bit) -ENTRY(_start) SECTIONS { diff --git a/arch/s390/kernel/vdso64/Makefile b/arch/s390/kernel/vdso64/Makefile index e3c9085f8fa7..ef9832726097 100644 --- a/arch/s390/kernel/vdso64/Makefile +++ b/arch/s390/kernel/vdso64/Makefile @@ -25,8 +25,9 @@ KBUILD_AFLAGS_64 += -m64 KBUILD_CFLAGS_64 := $(filter-out -m64,$(KBUILD_CFLAGS)) KBUILD_CFLAGS_64 := $(filter-out -mno-pic-data-is-text-relative,$(KBUILD_CFLAGS_64)) +KBUILD_CFLAGS_64 := $(filter-out -munaligned-symbols,$(KBUILD_CFLAGS_64)) KBUILD_CFLAGS_64 += -m64 -fPIC -fno-common -fno-builtin -ldflags-y := -fPIC -shared -soname=linux-vdso64.so.1 \ +ldflags-y := -shared -soname=linux-vdso64.so.1 \ --hash-style=both --build-id=sha1 -T $(targets:%=$(obj)/%.dbg): KBUILD_CFLAGS = $(KBUILD_CFLAGS_64) diff --git a/arch/s390/kernel/vdso64/vdso64.lds.S b/arch/s390/kernel/vdso64/vdso64.lds.S index 4461ea151e49..37e2a505e81d 100644 --- a/arch/s390/kernel/vdso64/vdso64.lds.S +++ b/arch/s390/kernel/vdso64/vdso64.lds.S @@ -9,7 +9,6 @@ OUTPUT_FORMAT("elf64-s390", "elf64-s390", "elf64-s390") OUTPUT_ARCH(s390:64-bit) -ENTRY(_start) SECTIONS { diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S index e32ef446f451..48de296e8905 100644 --- a/arch/s390/kernel/vmlinux.lds.S +++ b/arch/s390/kernel/vmlinux.lds.S @@ -59,6 +59,14 @@ SECTIONS } :text = 0x0700 RO_DATA(PAGE_SIZE) + .data.rel.ro : { + *(.data.rel.ro .data.rel.ro.*) + } + .got : { + __got_start = .; + *(.got) + __got_end = .; + } . = ALIGN(PAGE_SIZE); _sdata = .; /* Start of data section */ @@ -73,6 +81,9 @@ SECTIONS __end_ro_after_init = .; RW_DATA(0x100, PAGE_SIZE, THREAD_SIZE) + .data.rel : { + *(.data.rel*) + } BOOT_DATA_PRESERVED . = ALIGN(8); @@ -181,6 +192,7 @@ SECTIONS PERCPU_SECTION(0x100) +#ifdef CONFIG_PIE_BUILD .dynsym ALIGN(8) : { __dynsym_start = .; *(.dynsym) @@ -191,6 +203,19 @@ SECTIONS *(.rela*) __rela_dyn_end = .; } + .dynamic ALIGN(8) : { + *(.dynamic) + } + .dynstr ALIGN(8) : { + *(.dynstr) + } +#endif + .hash ALIGN(8) : { + *(.hash) + } + .gnu.hash ALIGN(8) : { + *(.gnu.hash) + } . = ALIGN(PAGE_SIZE); __init_end = .; /* freed after init ends here */ @@ -214,9 +239,14 @@ SECTIONS QUAD(__boot_data_preserved_start) /* bootdata_preserved_off */ QUAD(__boot_data_preserved_end - __boot_data_preserved_start) /* bootdata_preserved_size */ +#ifdef CONFIG_PIE_BUILD QUAD(__dynsym_start) /* dynsym_start */ QUAD(__rela_dyn_start) /* rela_dyn_start */ QUAD(__rela_dyn_end) /* rela_dyn_end */ +#else + QUAD(__got_start) /* got_start */ + QUAD(__got_end) /* got_end */ +#endif QUAD(_eamode31 - _samode31) /* amode31_size */ QUAD(init_mm) QUAD(swapper_pg_dir) @@ -235,6 +265,30 @@ SECTIONS DWARF_DEBUG ELF_DETAILS + /* + * Make sure that the .got.plt is either completely empty or it + * contains only the three reserved double words. + */ + .got.plt : { + *(.got.plt) + } + ASSERT(SIZEOF(.got.plt) == 0 || SIZEOF(.got.plt) == 0x18, "Unexpected GOT/PLT entries detected!") + + /* + * Sections that should stay zero sized, which is safer to + * explicitly check instead of blindly discarding. + */ + .plt : { + *(.plt) *(.plt.*) *(.iplt) *(.igot .igot.plt) + } + ASSERT(SIZEOF(.plt) == 0, "Unexpected run-time procedure linkages detected!") +#ifndef CONFIG_PIE_BUILD + .rela.dyn : { + *(.rela.*) *(.rela_*) + } + ASSERT(SIZEOF(.rela.dyn) == 0, "Unexpected run-time relocations (.rela) detected!") +#endif + /* Sections to be discarded */ DISCARDS /DISCARD/ : { diff --git a/arch/s390/kvm/gaccess.c b/arch/s390/kvm/gaccess.c index 5bfcc50c1a68..ee863566910b 100644 --- a/arch/s390/kvm/gaccess.c +++ b/arch/s390/kvm/gaccess.c @@ -11,11 +11,11 @@ #include <linux/err.h> #include <linux/pgtable.h> #include <linux/bitfield.h> +#include <asm/access-regs.h> #include <asm/fault.h> #include <asm/gmap.h> #include "kvm-s390.h" #include "gaccess.h" -#include <asm/switch_to.h> union asce { unsigned long val; @@ -391,7 +391,8 @@ static int ar_translation(struct kvm_vcpu *vcpu, union asce *asce, u8 ar, if (ar >= NUM_ACRS) return -EINVAL; - save_access_regs(vcpu->run->s.regs.acrs); + if (vcpu->arch.acrs_loaded) + save_access_regs(vcpu->run->s.regs.acrs); alet.val = vcpu->run->s.regs.acrs[ar]; if (ar == 0 || alet.val == 0) { diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c index fc4007cc067a..dc721d50a942 100644 --- a/arch/s390/kvm/interrupt.c +++ b/arch/s390/kvm/interrupt.c @@ -19,13 +19,13 @@ #include <linux/slab.h> #include <linux/bitmap.h> #include <linux/vmalloc.h> +#include <asm/access-regs.h> #include <asm/asm-offsets.h> #include <asm/dis.h> #include <linux/uaccess.h> #include <asm/sclp.h> #include <asm/isc.h> #include <asm/gmap.h> -#include <asm/switch_to.h> #include <asm/nmi.h> #include <asm/airq.h> #include <asm/tpi.h> @@ -584,7 +584,7 @@ static int __write_machine_check(struct kvm_vcpu *vcpu, mci.val = mchk->mcic; /* take care of lazy register loading */ - save_fpu_regs(); + kvm_s390_fpu_store(vcpu->run); save_access_regs(vcpu->run->s.regs.acrs); if (MACHINE_HAS_GS && vcpu->arch.gs_enabled) save_gs_cb(current->thread.gs_cb); @@ -648,7 +648,7 @@ static int __write_machine_check(struct kvm_vcpu *vcpu, } rc |= write_guest_lc(vcpu, __LC_GPREGS_SAVE_AREA, vcpu->run->s.regs.gprs, 128); - rc |= put_guest_lc(vcpu, current->thread.fpu.fpc, + rc |= put_guest_lc(vcpu, vcpu->run->s.regs.fpc, (u32 __user *) __LC_FP_CREG_SAVE_AREA); rc |= put_guest_lc(vcpu, vcpu->arch.sie_block->todpr, (u32 __user *) __LC_TOD_PROGREG_SAVE_AREA); diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index ea63ac769889..b11bb8e780a1 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -33,19 +33,19 @@ #include <linux/pgtable.h> #include <linux/mmu_notifier.h> +#include <asm/access-regs.h> #include <asm/asm-offsets.h> #include <asm/lowcore.h> #include <asm/stp.h> #include <asm/gmap.h> #include <asm/nmi.h> -#include <asm/switch_to.h> #include <asm/isc.h> #include <asm/sclp.h> #include <asm/cpacf.h> #include <asm/timex.h> +#include <asm/fpu.h> #include <asm/ap.h> #include <asm/uv.h> -#include <asm/fpu/api.h> #include "kvm-s390.h" #include "gaccess.h" #include "pci.h" @@ -3951,6 +3951,7 @@ int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu) KVM_SYNC_ARCH0 | KVM_SYNC_PFAULT | KVM_SYNC_DIAG318; + vcpu->arch.acrs_loaded = false; kvm_s390_set_prefix(vcpu, 0); if (test_kvm_facility(vcpu->kvm, 64)) vcpu->run->kvm_valid_regs |= KVM_SYNC_RICCB; @@ -4829,8 +4830,6 @@ static int __vcpu_run(struct kvm_vcpu *vcpu) vcpu->run->s.regs.gprs, sizeof(sie_page->pv_grregs)); } - if (test_cpu_flag(CIF_FPU)) - load_fpu_regs(); exit_reason = sie64a(vcpu->arch.sie_block, vcpu->run->s.regs.gprs); if (kvm_s390_pv_cpu_is_protected(vcpu)) { @@ -4951,16 +4950,8 @@ static void sync_regs(struct kvm_vcpu *vcpu) } save_access_regs(vcpu->arch.host_acrs); restore_access_regs(vcpu->run->s.regs.acrs); - /* save host (userspace) fprs/vrs */ - save_fpu_regs(); - vcpu->arch.host_fpregs.fpc = current->thread.fpu.fpc; - vcpu->arch.host_fpregs.regs = current->thread.fpu.regs; - if (cpu_has_vx()) - current->thread.fpu.regs = vcpu->run->s.regs.vrs; - else - current->thread.fpu.regs = vcpu->run->s.regs.fprs; - current->thread.fpu.fpc = vcpu->run->s.regs.fpc; - + vcpu->arch.acrs_loaded = true; + kvm_s390_fpu_load(vcpu->run); /* Sync fmt2 only data */ if (likely(!kvm_s390_pv_cpu_is_protected(vcpu))) { sync_regs_fmt2(vcpu); @@ -5021,12 +5012,8 @@ static void store_regs(struct kvm_vcpu *vcpu) kvm_run->s.regs.pfc = vcpu->arch.pfault_compare; save_access_regs(vcpu->run->s.regs.acrs); restore_access_regs(vcpu->arch.host_acrs); - /* Save guest register state */ - save_fpu_regs(); - vcpu->run->s.regs.fpc = current->thread.fpu.fpc; - /* Restore will be done lazily at return */ - current->thread.fpu.fpc = vcpu->arch.host_fpregs.fpc; - current->thread.fpu.regs = vcpu->arch.host_fpregs.regs; + vcpu->arch.acrs_loaded = false; + kvm_s390_fpu_store(vcpu->run); if (likely(!kvm_s390_pv_cpu_is_protected(vcpu))) store_regs_fmt2(vcpu); } @@ -5034,6 +5021,7 @@ static void store_regs(struct kvm_vcpu *vcpu) int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu) { struct kvm_run *kvm_run = vcpu->run; + DECLARE_KERNEL_FPU_ONSTACK32(fpu); int rc; /* @@ -5075,6 +5063,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu) goto out; } + kernel_fpu_begin(&fpu, KERNEL_FPC | KERNEL_VXR); sync_regs(vcpu); enable_cpu_timer_accounting(vcpu); @@ -5098,6 +5087,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu) disable_cpu_timer_accounting(vcpu); store_regs(vcpu); + kernel_fpu_end(&fpu, KERNEL_FPC | KERNEL_VXR); kvm_sigset_deactivate(vcpu); @@ -5172,8 +5162,7 @@ int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr) * switch in the run ioctl. Let's update our copies before we save * it into the save area */ - save_fpu_regs(); - vcpu->run->s.regs.fpc = current->thread.fpu.fpc; + kvm_s390_fpu_store(vcpu->run); save_access_regs(vcpu->run->s.regs.acrs); return kvm_s390_store_status_unloaded(vcpu, addr); diff --git a/arch/s390/kvm/kvm-s390.h b/arch/s390/kvm/kvm-s390.h index a7ea80cfa445..111eb5c74784 100644 --- a/arch/s390/kvm/kvm-s390.h +++ b/arch/s390/kvm/kvm-s390.h @@ -20,6 +20,24 @@ #include <asm/processor.h> #include <asm/sclp.h> +static inline void kvm_s390_fpu_store(struct kvm_run *run) +{ + fpu_stfpc(&run->s.regs.fpc); + if (cpu_has_vx()) + save_vx_regs((__vector128 *)&run->s.regs.vrs); + else + save_fp_regs((freg_t *)&run->s.regs.fprs); +} + +static inline void kvm_s390_fpu_load(struct kvm_run *run) +{ + fpu_lfpc_safe(&run->s.regs.fpc); + if (cpu_has_vx()) + load_vx_regs((__vector128 *)&run->s.regs.vrs); + else + load_fp_regs((freg_t *)&run->s.regs.fprs); +} + /* Transactional Memory Execution related macros */ #define IS_TE_ENABLED(vcpu) ((vcpu->arch.sie_block->ecb & ECB_TE)) #define TDB_FORMAT1 1 diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c index 621a17fd1a1b..f875a404a0a0 100644 --- a/arch/s390/kvm/priv.c +++ b/arch/s390/kvm/priv.c @@ -676,8 +676,12 @@ static int handle_pqap(struct kvm_vcpu *vcpu) if (vcpu->kvm->arch.crypto.pqap_hook) { pqap_hook = *vcpu->kvm->arch.crypto.pqap_hook; ret = pqap_hook(vcpu); - if (!ret && vcpu->run->s.regs.gprs[1] & 0x00ff0000) - kvm_s390_set_psw_cc(vcpu, 3); + if (!ret) { + if (vcpu->run->s.regs.gprs[1] & 0x00ff0000) + kvm_s390_set_psw_cc(vcpu, 3); + else + kvm_s390_set_psw_cc(vcpu, 0); + } up_read(&vcpu->kvm->arch.crypto.pqap_hook_rwsem); return ret; } diff --git a/arch/s390/kvm/vsie.c b/arch/s390/kvm/vsie.c index fef42e2a80a2..b2c9f010f0fe 100644 --- a/arch/s390/kvm/vsie.c +++ b/arch/s390/kvm/vsie.c @@ -18,7 +18,6 @@ #include <asm/sclp.h> #include <asm/nmi.h> #include <asm/dis.h> -#include <asm/fpu/api.h> #include <asm/facility.h> #include "kvm-s390.h" #include "gaccess.h" @@ -1149,8 +1148,6 @@ static int do_vsie_run(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page) */ vcpu->arch.sie_block->prog0c |= PROG_IN_SIE; barrier(); - if (test_cpu_flag(CIF_FPU)) - load_fpu_regs(); if (!kvm_s390_vcpu_sie_inhibited(vcpu)) rc = sie64a(scb_s, vcpu->run->s.regs.gprs); barrier(); @@ -1235,7 +1232,6 @@ static int acquire_gmap_shadow(struct kvm_vcpu *vcpu, gmap = gmap_shadow(vcpu->arch.gmap, asce, edat); if (IS_ERR(gmap)) return PTR_ERR(gmap); - gmap->private = vcpu->kvm; vcpu->kvm->stat.gmap_shadow_create++; WRITE_ONCE(vsie_page->gmap, gmap); return 0; diff --git a/arch/s390/lib/Makefile b/arch/s390/lib/Makefile index 7c50eca85ca4..90eac15ea62a 100644 --- a/arch/s390/lib/Makefile +++ b/arch/s390/lib/Makefile @@ -4,6 +4,7 @@ # lib-y += delay.o string.o uaccess.o find.o spinlock.o tishift.o +lib-y += csum-partial.o obj-y += mem.o xor.o lib-$(CONFIG_KPROBES) += probes.o lib-$(CONFIG_UPROBES) += probes.o diff --git a/arch/s390/lib/csum-partial.c b/arch/s390/lib/csum-partial.c new file mode 100644 index 000000000000..458abd9bac70 --- /dev/null +++ b/arch/s390/lib/csum-partial.c @@ -0,0 +1,91 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <linux/export.h> +#include <asm/checksum.h> +#include <asm/fpu.h> + +/* + * Computes the checksum of a memory block at src, length len, + * and adds in "sum" (32-bit). If copy is true copies to dst. + * + * Returns a 32-bit number suitable for feeding into itself + * or csum_tcpudp_magic. + * + * This function must be called with even lengths, except + * for the last fragment, which may be odd. + * + * It's best to have src and dst aligned on a 64-bit boundary. + */ +static __always_inline __wsum csum_copy(void *dst, const void *src, int len, __wsum sum, bool copy) +{ + DECLARE_KERNEL_FPU_ONSTACK8(vxstate); + + if (!cpu_has_vx()) { + if (copy) + memcpy(dst, src, len); + return cksm(dst, len, sum); + } + kernel_fpu_begin(&vxstate, KERNEL_VXR_V16V23); + fpu_vlvgf(16, (__force u32)sum, 1); + fpu_vzero(17); + fpu_vzero(18); + fpu_vzero(19); + while (len >= 64) { + fpu_vlm(20, 23, src); + if (copy) { + fpu_vstm(20, 23, dst); + dst += 64; + } + fpu_vcksm(16, 20, 16); + fpu_vcksm(17, 21, 17); + fpu_vcksm(18, 22, 18); + fpu_vcksm(19, 23, 19); + src += 64; + len -= 64; + } + while (len >= 32) { + fpu_vlm(20, 21, src); + if (copy) { + fpu_vstm(20, 21, dst); + dst += 32; + } + fpu_vcksm(16, 20, 16); + fpu_vcksm(17, 21, 17); + src += 32; + len -= 32; + } + while (len >= 16) { + fpu_vl(20, src); + if (copy) { + fpu_vst(20, dst); + dst += 16; + } + fpu_vcksm(16, 20, 16); + src += 16; + len -= 16; + } + if (len) { + fpu_vll(20, len - 1, src); + if (copy) + fpu_vstl(20, len - 1, dst); + fpu_vcksm(16, 20, 16); + } + fpu_vcksm(18, 19, 18); + fpu_vcksm(16, 17, 16); + fpu_vcksm(16, 18, 16); + sum = (__force __wsum)fpu_vlgvf(16, 1); + kernel_fpu_end(&vxstate, KERNEL_VXR_V16V23); + return sum; +} + +__wsum csum_partial(const void *buff, int len, __wsum sum) +{ + return csum_copy(NULL, buff, len, sum, false); +} +EXPORT_SYMBOL(csum_partial); + +__wsum csum_partial_copy_nocheck(const void *src, void *dst, int len) +{ + return csum_copy(dst, src, len, 0, true); +} +EXPORT_SYMBOL(csum_partial_copy_nocheck); diff --git a/arch/s390/mm/extmem.c b/arch/s390/mm/extmem.c index e41869f5cc95..282fefe107a2 100644 --- a/arch/s390/mm/extmem.c +++ b/arch/s390/mm/extmem.c @@ -136,7 +136,7 @@ dcss_diag(int *func, void *parameter, unsigned long rx, ry; int rc; - rx = (unsigned long) parameter; + rx = virt_to_phys(parameter); ry = (unsigned long) *func; diag_stat_inc(DIAG_STAT_X064); @@ -178,7 +178,7 @@ query_segment_type (struct dcss_segment *seg) /* initialize diag input parameters */ qin->qopcode = DCSS_FINDSEGA; - qin->qoutptr = (unsigned long) qout; + qin->qoutptr = virt_to_phys(qout); qin->qoutlen = sizeof(struct qout64); memcpy (qin->qname, seg->dcss_name, 8); diff --git a/arch/s390/mm/gmap.c b/arch/s390/mm/gmap.c index 6f96b5a71c63..8da39deb56ca 100644 --- a/arch/s390/mm/gmap.c +++ b/arch/s390/mm/gmap.c @@ -1691,6 +1691,7 @@ struct gmap *gmap_shadow(struct gmap *parent, unsigned long asce, return ERR_PTR(-ENOMEM); new->mm = parent->mm; new->parent = gmap_get(parent); + new->private = parent->private; new->orig_asce = asce; new->edat_level = edat_level; new->initialized = false; diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c index fc9a7dc26c5e..b14fc0887654 100644 --- a/arch/s390/mm/mmap.c +++ b/arch/s390/mm/mmap.c @@ -71,6 +71,15 @@ static inline unsigned long mmap_base(unsigned long rnd, return PAGE_ALIGN(STACK_TOP - gap - rnd); } +static int get_align_mask(struct file *filp, unsigned long flags) +{ + if (!(current->flags & PF_RANDOMIZE)) + return 0; + if (filp || (flags & MAP_SHARED)) + return MMAP_ALIGN_MASK << PAGE_SHIFT; + return 0; +} + unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags) @@ -97,10 +106,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, info.length = len; info.low_limit = mm->mmap_base; info.high_limit = TASK_SIZE; - if (filp || (flags & MAP_SHARED)) - info.align_mask = MMAP_ALIGN_MASK << PAGE_SHIFT; - else - info.align_mask = 0; + info.align_mask = get_align_mask(filp, flags); info.align_offset = pgoff << PAGE_SHIFT; addr = vm_unmapped_area(&info); if (offset_in_page(addr)) @@ -138,10 +144,7 @@ unsigned long arch_get_unmapped_area_topdown(struct file *filp, unsigned long ad info.length = len; info.low_limit = PAGE_SIZE; info.high_limit = mm->mmap_base; - if (filp || (flags & MAP_SHARED)) - info.align_mask = MMAP_ALIGN_MASK << PAGE_SHIFT; - else - info.align_mask = 0; + info.align_mask = get_align_mask(filp, flags); info.align_offset = pgoff << PAGE_SHIFT; addr = vm_unmapped_area(&info); diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c index 676ac74026a8..26afde0d1ed3 100644 --- a/arch/s390/pci/pci.c +++ b/arch/s390/pci/pci.c @@ -28,6 +28,7 @@ #include <linux/jump_label.h> #include <linux/pci.h> #include <linux/printk.h> +#include <linux/lockdep.h> #include <asm/isc.h> #include <asm/airq.h> @@ -252,7 +253,7 @@ resource_size_t pcibios_align_resource(void *data, const struct resource *res, /* combine single writes by using store-block insn */ void __iowrite64_copy(void __iomem *to, const void *from, size_t count) { - zpci_memcpy_toio(to, from, count); + zpci_memcpy_toio(to, from, count * 8); } void __iomem *ioremap_prot(phys_addr_t phys_addr, size_t size, @@ -730,12 +731,12 @@ EXPORT_SYMBOL_GPL(zpci_disable_device); * equivalent to its state during boot when first probing a driver. * Consequently after reset the PCI function requires re-initialization via the * common PCI code including re-enabling IRQs via pci_alloc_irq_vectors() - * and enabling the function via e.g.pci_enablde_device_flags().The caller + * and enabling the function via e.g. pci_enable_device_flags(). The caller * must guard against concurrent reset attempts. * * In most cases this function should not be called directly but through * pci_reset_function() or pci_reset_bus() which handle the save/restore and - * locking. + * locking - asserted by lockdep. * * Return: 0 on success and an error value otherwise */ @@ -744,6 +745,7 @@ int zpci_hot_reset_device(struct zpci_dev *zdev) u8 status; int rc; + lockdep_assert_held(&zdev->state_lock); zpci_dbg(3, "rst fid:%x, fh:%x\n", zdev->fid, zdev->fh); if (zdev_enabled(zdev)) { /* Disables device access, DMAs and IRQs (reset state) */ @@ -806,7 +808,8 @@ struct zpci_dev *zpci_create_device(u32 fid, u32 fh, enum zpci_state state) zdev->state = state; kref_init(&zdev->kref); - mutex_init(&zdev->lock); + mutex_init(&zdev->state_lock); + mutex_init(&zdev->fmb_lock); mutex_init(&zdev->kzdev_lock); rc = zpci_init_iommu(zdev); @@ -870,6 +873,10 @@ int zpci_deconfigure_device(struct zpci_dev *zdev) { int rc; + lockdep_assert_held(&zdev->state_lock); + if (zdev->state != ZPCI_FN_STATE_CONFIGURED) + return 0; + if (zdev->zbus->bus) zpci_bus_remove_device(zdev, false); @@ -889,7 +896,7 @@ int zpci_deconfigure_device(struct zpci_dev *zdev) } /** - * zpci_device_reserved() - Mark device as resverved + * zpci_device_reserved() - Mark device as reserved * @zdev: the zpci_dev that was reserved * * Handle the case that a given zPCI function was reserved by another system. @@ -899,8 +906,6 @@ int zpci_deconfigure_device(struct zpci_dev *zdev) */ void zpci_device_reserved(struct zpci_dev *zdev) { - if (zdev->has_hp_slot) - zpci_exit_slot(zdev); /* * Remove device from zpci_list as it is going away. This also * makes sure we ignore subsequent zPCI events for this device. @@ -918,6 +923,9 @@ void zpci_release_device(struct kref *kref) struct zpci_dev *zdev = container_of(kref, struct zpci_dev, kref); int ret; + if (zdev->has_hp_slot) + zpci_exit_slot(zdev); + if (zdev->zbus->bus) zpci_bus_remove_device(zdev, false); diff --git a/arch/s390/pci/pci_debug.c b/arch/s390/pci/pci_debug.c index 6dde2263c79d..2cb5043a997d 100644 --- a/arch/s390/pci/pci_debug.c +++ b/arch/s390/pci/pci_debug.c @@ -91,9 +91,9 @@ static int pci_perf_show(struct seq_file *m, void *v) if (!zdev) return 0; - mutex_lock(&zdev->lock); + mutex_lock(&zdev->fmb_lock); if (!zdev->fmb) { - mutex_unlock(&zdev->lock); + mutex_unlock(&zdev->fmb_lock); seq_puts(m, "FMB statistics disabled\n"); return 0; } @@ -130,7 +130,7 @@ static int pci_perf_show(struct seq_file *m, void *v) } pci_sw_counter_show(m); - mutex_unlock(&zdev->lock); + mutex_unlock(&zdev->fmb_lock); return 0; } @@ -148,7 +148,7 @@ static ssize_t pci_perf_seq_write(struct file *file, const char __user *ubuf, if (rc) return rc; - mutex_lock(&zdev->lock); + mutex_lock(&zdev->fmb_lock); switch (val) { case 0: rc = zpci_fmb_disable_device(zdev); @@ -157,7 +157,7 @@ static ssize_t pci_perf_seq_write(struct file *file, const char __user *ubuf, rc = zpci_fmb_enable_device(zdev); break; } - mutex_unlock(&zdev->lock); + mutex_unlock(&zdev->fmb_lock); return rc ? rc : count; } diff --git a/arch/s390/pci/pci_event.c b/arch/s390/pci/pci_event.c index 4d9773ef9e0a..dbe95ec5917e 100644 --- a/arch/s390/pci/pci_event.c +++ b/arch/s390/pci/pci_event.c @@ -267,6 +267,7 @@ static void __zpci_event_error(struct zpci_ccdf_err *ccdf) zpci_err_hex(ccdf, sizeof(*ccdf)); if (zdev) { + mutex_lock(&zdev->state_lock); zpci_update_fh(zdev, ccdf->fh); if (zdev->zbus->bus) pdev = pci_get_slot(zdev->zbus->bus, zdev->devfn); @@ -294,6 +295,8 @@ static void __zpci_event_error(struct zpci_ccdf_err *ccdf) } pci_dev_put(pdev); no_pdev: + if (zdev) + mutex_unlock(&zdev->state_lock); zpci_zdev_put(zdev); } @@ -326,6 +329,10 @@ static void __zpci_event_availability(struct zpci_ccdf_avail *ccdf) zpci_dbg(3, "avl fid:%x, fh:%x, pec:%x\n", ccdf->fid, ccdf->fh, ccdf->pec); + + if (existing_zdev) + mutex_lock(&zdev->state_lock); + switch (ccdf->pec) { case 0x0301: /* Reserved|Standby -> Configured */ if (!zdev) { @@ -348,7 +355,7 @@ static void __zpci_event_availability(struct zpci_ccdf_avail *ccdf) break; case 0x0303: /* Deconfiguration requested */ if (zdev) { - /* The event may have been queued before we confirgured + /* The event may have been queued before we configured * the device. */ if (zdev->state != ZPCI_FN_STATE_CONFIGURED) @@ -359,7 +366,7 @@ static void __zpci_event_availability(struct zpci_ccdf_avail *ccdf) break; case 0x0304: /* Configured -> Standby|Reserved */ if (zdev) { - /* The event may have been queued before we confirgured + /* The event may have been queued before we configured * the device.: */ if (zdev->state == ZPCI_FN_STATE_CONFIGURED) @@ -383,8 +390,10 @@ static void __zpci_event_availability(struct zpci_ccdf_avail *ccdf) default: break; } - if (existing_zdev) + if (existing_zdev) { + mutex_unlock(&zdev->state_lock); zpci_zdev_put(zdev); + } } void zpci_event_availability(void *data) diff --git a/arch/s390/pci/pci_sysfs.c b/arch/s390/pci/pci_sysfs.c index 8a7abac51816..a0b872b74fe3 100644 --- a/arch/s390/pci/pci_sysfs.c +++ b/arch/s390/pci/pci_sysfs.c @@ -49,6 +49,39 @@ static ssize_t mio_enabled_show(struct device *dev, } static DEVICE_ATTR_RO(mio_enabled); +static int _do_recover(struct pci_dev *pdev, struct zpci_dev *zdev) +{ + u8 status; + int ret; + + pci_stop_and_remove_bus_device(pdev); + if (zdev_enabled(zdev)) { + ret = zpci_disable_device(zdev); + /* + * Due to a z/VM vs LPAR inconsistency in the error + * state the FH may indicate an enabled device but + * disable says the device is already disabled don't + * treat it as an error here. + */ + if (ret == -EINVAL) + ret = 0; + if (ret) + return ret; + } + + ret = zpci_enable_device(zdev); + if (ret) + return ret; + + if (zdev->dma_table) { + ret = zpci_register_ioat(zdev, 0, zdev->start_dma, zdev->end_dma, + virt_to_phys(zdev->dma_table), &status); + if (ret) + zpci_disable_device(zdev); + } + return ret; +} + static ssize_t recover_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { @@ -56,7 +89,6 @@ static ssize_t recover_store(struct device *dev, struct device_attribute *attr, struct pci_dev *pdev = to_pci_dev(dev); struct zpci_dev *zdev = to_zpci(pdev); int ret = 0; - u8 status; /* Can't use device_remove_self() here as that would lead us to lock * the pci_rescan_remove_lock while holding the device' kernfs lock. @@ -70,6 +102,12 @@ static ssize_t recover_store(struct device *dev, struct device_attribute *attr, */ kn = sysfs_break_active_protection(&dev->kobj, &attr->attr); WARN_ON_ONCE(!kn); + + /* Device needs to be configured and state must not change */ + mutex_lock(&zdev->state_lock); + if (zdev->state != ZPCI_FN_STATE_CONFIGURED) + goto out; + /* device_remove_file() serializes concurrent calls ignoring all but * the first */ @@ -82,35 +120,13 @@ static ssize_t recover_store(struct device *dev, struct device_attribute *attr, */ pci_lock_rescan_remove(); if (pci_dev_is_added(pdev)) { - pci_stop_and_remove_bus_device(pdev); - if (zdev_enabled(zdev)) { - ret = zpci_disable_device(zdev); - /* - * Due to a z/VM vs LPAR inconsistency in the error - * state the FH may indicate an enabled device but - * disable says the device is already disabled don't - * treat it as an error here. - */ - if (ret == -EINVAL) - ret = 0; - if (ret) - goto out; - } - - ret = zpci_enable_device(zdev); - if (ret) - goto out; - - if (zdev->dma_table) { - ret = zpci_register_ioat(zdev, 0, zdev->start_dma, zdev->end_dma, - virt_to_phys(zdev->dma_table), &status); - if (ret) - zpci_disable_device(zdev); - } + ret = _do_recover(pdev, zdev); } -out: pci_rescan_bus(zdev->zbus->bus); pci_unlock_rescan_remove(); + +out: + mutex_unlock(&zdev->state_lock); if (kn) sysfs_unbreak_active_protection(kn); return ret ? ret : count; diff --git a/arch/s390/tools/.gitignore b/arch/s390/tools/.gitignore index ea62f37b79ef..e6af51d9d183 100644 --- a/arch/s390/tools/.gitignore +++ b/arch/s390/tools/.gitignore @@ -1,3 +1,4 @@ # SPDX-License-Identifier: GPL-2.0-only gen_facilities gen_opcode_table +relocs diff --git a/arch/s390/tools/Makefile b/arch/s390/tools/Makefile index f9dd47ff9ac4..f2862364fb42 100644 --- a/arch/s390/tools/Makefile +++ b/arch/s390/tools/Makefile @@ -25,3 +25,8 @@ $(kapi)/facility-defs.h: $(obj)/gen_facilities FORCE $(kapi)/dis-defs.h: $(obj)/gen_opcode_table FORCE $(call filechk,dis-defs.h) + +hostprogs += relocs +PHONY += relocs +relocs: $(obj)/relocs + @: diff --git a/arch/s390/tools/relocs.c b/arch/s390/tools/relocs.c new file mode 100644 index 000000000000..30a732c808f3 --- /dev/null +++ b/arch/s390/tools/relocs.c @@ -0,0 +1,387 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <stdint.h> +#include <inttypes.h> +#include <string.h> +#include <errno.h> +#include <unistd.h> +#include <elf.h> +#include <byteswap.h> +#define USE_BSD +#include <endian.h> + +#define ELF_BITS 64 + +#define ELF_MACHINE EM_S390 +#define ELF_MACHINE_NAME "IBM S/390" +#define SHT_REL_TYPE SHT_RELA +#define Elf_Rel Elf64_Rela + +#define ELF_CLASS ELFCLASS64 +#define ELF_ENDIAN ELFDATA2MSB +#define ELF_R_SYM(val) ELF64_R_SYM(val) +#define ELF_R_TYPE(val) ELF64_R_TYPE(val) +#define ELF_ST_TYPE(o) ELF64_ST_TYPE(o) +#define ELF_ST_BIND(o) ELF64_ST_BIND(o) +#define ELF_ST_VISIBILITY(o) ELF64_ST_VISIBILITY(o) + +#define ElfW(type) _ElfW(ELF_BITS, type) +#define _ElfW(bits, type) __ElfW(bits, type) +#define __ElfW(bits, type) Elf##bits##_##type + +#define Elf_Addr ElfW(Addr) +#define Elf_Ehdr ElfW(Ehdr) +#define Elf_Phdr ElfW(Phdr) +#define Elf_Shdr ElfW(Shdr) +#define Elf_Sym ElfW(Sym) + +static Elf_Ehdr ehdr; +static unsigned long shnum; +static unsigned int shstrndx; + +struct relocs { + uint32_t *offset; + unsigned long count; + unsigned long size; +}; + +static struct relocs relocs64; +#define FMT PRIu64 + +struct section { + Elf_Shdr shdr; + struct section *link; + Elf_Rel *reltab; +}; + +static struct section *secs; + +#if BYTE_ORDER == LITTLE_ENDIAN +#define le16_to_cpu(val) (val) +#define le32_to_cpu(val) (val) +#define le64_to_cpu(val) (val) +#define be16_to_cpu(val) bswap_16(val) +#define be32_to_cpu(val) bswap_32(val) +#define be64_to_cpu(val) bswap_64(val) +#endif + +#if BYTE_ORDER == BIG_ENDIAN +#define le16_to_cpu(val) bswap_16(val) +#define le32_to_cpu(val) bswap_32(val) +#define le64_to_cpu(val) bswap_64(val) +#define be16_to_cpu(val) (val) +#define be32_to_cpu(val) (val) +#define be64_to_cpu(val) (val) +#endif + +static uint16_t elf16_to_cpu(uint16_t val) +{ + if (ehdr.e_ident[EI_DATA] == ELFDATA2LSB) + return le16_to_cpu(val); + else + return be16_to_cpu(val); +} + +static uint32_t elf32_to_cpu(uint32_t val) +{ + if (ehdr.e_ident[EI_DATA] == ELFDATA2LSB) + return le32_to_cpu(val); + else + return be32_to_cpu(val); +} + +#define elf_half_to_cpu(x) elf16_to_cpu(x) +#define elf_word_to_cpu(x) elf32_to_cpu(x) + +static uint64_t elf64_to_cpu(uint64_t val) +{ + return be64_to_cpu(val); +} + +#define elf_addr_to_cpu(x) elf64_to_cpu(x) +#define elf_off_to_cpu(x) elf64_to_cpu(x) +#define elf_xword_to_cpu(x) elf64_to_cpu(x) + +static void die(char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + vfprintf(stderr, fmt, ap); + va_end(ap); + exit(1); +} + +static void read_ehdr(FILE *fp) +{ + if (fread(&ehdr, sizeof(ehdr), 1, fp) != 1) + die("Cannot read ELF header: %s\n", strerror(errno)); + if (memcmp(ehdr.e_ident, ELFMAG, SELFMAG) != 0) + die("No ELF magic\n"); + if (ehdr.e_ident[EI_CLASS] != ELF_CLASS) + die("Not a %d bit executable\n", ELF_BITS); + if (ehdr.e_ident[EI_DATA] != ELF_ENDIAN) + die("ELF endian mismatch\n"); + if (ehdr.e_ident[EI_VERSION] != EV_CURRENT) + die("Unknown ELF version\n"); + + /* Convert the fields to native endian */ + ehdr.e_type = elf_half_to_cpu(ehdr.e_type); + ehdr.e_machine = elf_half_to_cpu(ehdr.e_machine); + ehdr.e_version = elf_word_to_cpu(ehdr.e_version); + ehdr.e_entry = elf_addr_to_cpu(ehdr.e_entry); + ehdr.e_phoff = elf_off_to_cpu(ehdr.e_phoff); + ehdr.e_shoff = elf_off_to_cpu(ehdr.e_shoff); + ehdr.e_flags = elf_word_to_cpu(ehdr.e_flags); + ehdr.e_ehsize = elf_half_to_cpu(ehdr.e_ehsize); + ehdr.e_phentsize = elf_half_to_cpu(ehdr.e_phentsize); + ehdr.e_phnum = elf_half_to_cpu(ehdr.e_phnum); + ehdr.e_shentsize = elf_half_to_cpu(ehdr.e_shentsize); + ehdr.e_shnum = elf_half_to_cpu(ehdr.e_shnum); + ehdr.e_shstrndx = elf_half_to_cpu(ehdr.e_shstrndx); + + shnum = ehdr.e_shnum; + shstrndx = ehdr.e_shstrndx; + + if ((ehdr.e_type != ET_EXEC) && (ehdr.e_type != ET_DYN)) + die("Unsupported ELF header type\n"); + if (ehdr.e_machine != ELF_MACHINE) + die("Not for %s\n", ELF_MACHINE_NAME); + if (ehdr.e_version != EV_CURRENT) + die("Unknown ELF version\n"); + if (ehdr.e_ehsize != sizeof(Elf_Ehdr)) + die("Bad Elf header size\n"); + if (ehdr.e_phentsize != sizeof(Elf_Phdr)) + die("Bad program header entry\n"); + if (ehdr.e_shentsize != sizeof(Elf_Shdr)) + die("Bad section header entry\n"); + + if (shnum == SHN_UNDEF || shstrndx == SHN_XINDEX) { + Elf_Shdr shdr; + + if (fseek(fp, ehdr.e_shoff, SEEK_SET) < 0) + die("Seek to %" FMT " failed: %s\n", ehdr.e_shoff, strerror(errno)); + + if (fread(&shdr, sizeof(shdr), 1, fp) != 1) + die("Cannot read initial ELF section header: %s\n", strerror(errno)); + + if (shnum == SHN_UNDEF) + shnum = elf_xword_to_cpu(shdr.sh_size); + + if (shstrndx == SHN_XINDEX) + shstrndx = elf_word_to_cpu(shdr.sh_link); + } + + if (shstrndx >= shnum) + die("String table index out of bounds\n"); +} + +static void read_shdrs(FILE *fp) +{ + Elf_Shdr shdr; + int i; + + secs = calloc(shnum, sizeof(struct section)); + if (!secs) + die("Unable to allocate %ld section headers\n", shnum); + + if (fseek(fp, ehdr.e_shoff, SEEK_SET) < 0) + die("Seek to %" FMT " failed: %s\n", ehdr.e_shoff, strerror(errno)); + + for (i = 0; i < shnum; i++) { + struct section *sec = &secs[i]; + + if (fread(&shdr, sizeof(shdr), 1, fp) != 1) { + die("Cannot read ELF section headers %d/%ld: %s\n", + i, shnum, strerror(errno)); + } + + sec->shdr.sh_name = elf_word_to_cpu(shdr.sh_name); + sec->shdr.sh_type = elf_word_to_cpu(shdr.sh_type); + sec->shdr.sh_flags = elf_xword_to_cpu(shdr.sh_flags); + sec->shdr.sh_addr = elf_addr_to_cpu(shdr.sh_addr); + sec->shdr.sh_offset = elf_off_to_cpu(shdr.sh_offset); + sec->shdr.sh_size = elf_xword_to_cpu(shdr.sh_size); + sec->shdr.sh_link = elf_word_to_cpu(shdr.sh_link); + sec->shdr.sh_info = elf_word_to_cpu(shdr.sh_info); + sec->shdr.sh_addralign = elf_xword_to_cpu(shdr.sh_addralign); + sec->shdr.sh_entsize = elf_xword_to_cpu(shdr.sh_entsize); + + if (sec->shdr.sh_link < shnum) + sec->link = &secs[sec->shdr.sh_link]; + } + +} + +static void read_relocs(FILE *fp) +{ + int i, j; + + for (i = 0; i < shnum; i++) { + struct section *sec = &secs[i]; + + if (sec->shdr.sh_type != SHT_REL_TYPE) + continue; + + sec->reltab = malloc(sec->shdr.sh_size); + if (!sec->reltab) + die("malloc of %" FMT " bytes for relocs failed\n", sec->shdr.sh_size); + + if (fseek(fp, sec->shdr.sh_offset, SEEK_SET) < 0) + die("Seek to %" FMT " failed: %s\n", sec->shdr.sh_offset, strerror(errno)); + + if (fread(sec->reltab, 1, sec->shdr.sh_size, fp) != sec->shdr.sh_size) + die("Cannot read symbol table: %s\n", strerror(errno)); + + for (j = 0; j < sec->shdr.sh_size / sizeof(Elf_Rel); j++) { + Elf_Rel *rel = &sec->reltab[j]; + + rel->r_offset = elf_addr_to_cpu(rel->r_offset); + rel->r_info = elf_xword_to_cpu(rel->r_info); +#if (SHT_REL_TYPE == SHT_RELA) + rel->r_addend = elf_xword_to_cpu(rel->r_addend); +#endif + } + } +} + +static void add_reloc(struct relocs *r, uint32_t offset) +{ + if (r->count == r->size) { + unsigned long newsize = r->size + 50000; + void *mem = realloc(r->offset, newsize * sizeof(r->offset[0])); + + if (!mem) + die("realloc of %ld entries for relocs failed\n", newsize); + + r->offset = mem; + r->size = newsize; + } + r->offset[r->count++] = offset; +} + +static int do_reloc(struct section *sec, Elf_Rel *rel) +{ + unsigned int r_type = ELF64_R_TYPE(rel->r_info); + ElfW(Addr) offset = rel->r_offset; + + switch (r_type) { + case R_390_NONE: + case R_390_PC32: + case R_390_PC64: + case R_390_PC16DBL: + case R_390_PC32DBL: + case R_390_PLT32DBL: + case R_390_GOTENT: + case R_390_GOTPCDBL: + case R_390_GOTOFF64: + break; + case R_390_64: + add_reloc(&relocs64, offset); + break; + default: + die("Unsupported relocation type: %d\n", r_type); + break; + } + + return 0; +} + +static void walk_relocs(void) +{ + int i; + + /* Walk through the relocations */ + for (i = 0; i < shnum; i++) { + struct section *sec_applies; + int j; + struct section *sec = &secs[i]; + + if (sec->shdr.sh_type != SHT_REL_TYPE) + continue; + + sec_applies = &secs[sec->shdr.sh_info]; + if (!(sec_applies->shdr.sh_flags & SHF_ALLOC)) + continue; + + for (j = 0; j < sec->shdr.sh_size / sizeof(Elf_Rel); j++) { + Elf_Rel *rel = &sec->reltab[j]; + + do_reloc(sec, rel); + } + } +} + +static int cmp_relocs(const void *va, const void *vb) +{ + const uint32_t *a, *b; + + a = va; b = vb; + return (*a == *b) ? 0 : (*a > *b) ? 1 : -1; +} + +static void sort_relocs(struct relocs *r) +{ + qsort(r->offset, r->count, sizeof(r->offset[0]), cmp_relocs); +} + +static int print_reloc(uint32_t v) +{ + return fprintf(stdout, "\t.long 0x%08"PRIx32"\n", v) > 0 ? 0 : -1; +} + +static void emit_relocs(void) +{ + int i; + + walk_relocs(); + sort_relocs(&relocs64); + + printf(".section \".vmlinux.relocs_64\",\"a\"\n"); + for (i = 0; i < relocs64.count; i++) + print_reloc(relocs64.offset[i]); +} + +static void process(FILE *fp) +{ + read_ehdr(fp); + read_shdrs(fp); + read_relocs(fp); + emit_relocs(); +} + +static void usage(void) +{ + die("relocs vmlinux\n"); +} + +int main(int argc, char **argv) +{ + unsigned char e_ident[EI_NIDENT]; + const char *fname; + FILE *fp; + + fname = NULL; + + if (argc != 2) + usage(); + + fname = argv[1]; + + fp = fopen(fname, "r"); + if (!fp) + die("Cannot open %s: %s\n", fname, strerror(errno)); + + if (fread(&e_ident, 1, EI_NIDENT, fp) != EI_NIDENT) + die("Cannot read %s: %s", fname, strerror(errno)); + + rewind(fp); + + process(fp); + + fclose(fp); + return 0; +} diff --git a/arch/sparc/Makefile b/arch/sparc/Makefile index 5f6035936131..2a03daa68f28 100644 --- a/arch/sparc/Makefile +++ b/arch/sparc/Makefile @@ -60,7 +60,7 @@ libs-y += arch/sparc/prom/ libs-y += arch/sparc/lib/ drivers-$(CONFIG_PM) += arch/sparc/power/ -drivers-$(CONFIG_FB) += arch/sparc/video/ +drivers-$(CONFIG_FB_CORE) += arch/sparc/video/ boot := arch/sparc/boot diff --git a/arch/sparc/include/asm/jump_label.h b/arch/sparc/include/asm/jump_label.h index 94eb529dcb77..2718cbea826a 100644 --- a/arch/sparc/include/asm/jump_label.h +++ b/arch/sparc/include/asm/jump_label.h @@ -10,7 +10,7 @@ static __always_inline bool arch_static_branch(struct static_key *key, bool branch) { - asm_volatile_goto("1:\n\t" + asm goto("1:\n\t" "nop\n\t" "nop\n\t" ".pushsection __jump_table, \"aw\"\n\t" @@ -26,7 +26,7 @@ l_yes: static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch) { - asm_volatile_goto("1:\n\t" + asm goto("1:\n\t" "b %l[l_yes]\n\t" "nop\n\t" ".pushsection __jump_table, \"aw\"\n\t" diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c index f3969a3600db..a0cc9bb41a92 100644 --- a/arch/sparc/kernel/smp_64.c +++ b/arch/sparc/kernel/smp_64.c @@ -1206,10 +1206,6 @@ void __init smp_prepare_cpus(unsigned int max_cpus) { } -void smp_prepare_boot_cpu(void) -{ -} - void __init smp_setup_processor_id(void) { if (tlb_type == spitfire) diff --git a/arch/sparc/video/Makefile b/arch/sparc/video/Makefile index 6baddbd58e4d..d4d83f1702c6 100644 --- a/arch/sparc/video/Makefile +++ b/arch/sparc/video/Makefile @@ -1,3 +1,3 @@ # SPDX-License-Identifier: GPL-2.0-only -obj-$(CONFIG_FB) += fbdev.o +obj-$(CONFIG_FB_CORE) += fbdev.o diff --git a/arch/um/Makefile b/arch/um/Makefile index 82f05f250634..34957dcb88b9 100644 --- a/arch/um/Makefile +++ b/arch/um/Makefile @@ -115,7 +115,9 @@ archprepare: $(Q)$(MAKE) $(build)=$(HOST_DIR)/um include/generated/user_constants.h LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static -LINK-$(CONFIG_LD_SCRIPT_DYN) += $(call cc-option, -no-pie) +ifdef CONFIG_LD_SCRIPT_DYN +LINK-$(call gcc-min-version, 60100)$(CONFIG_CC_IS_CLANG) += -no-pie +endif LINK-$(CONFIG_LD_SCRIPT_DYN_RPATH) += -Wl,-rpath,/lib CFLAGS_NO_HARDENING := $(call cc-option, -fno-PIC,) $(call cc-option, -fno-pic,) \ diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c index 92ee2697ff39..63fc062add70 100644 --- a/arch/um/drivers/ubd_kern.c +++ b/arch/um/drivers/ubd_kern.c @@ -108,8 +108,6 @@ static inline void ubd_set_bit(__u64 bit, unsigned char *data) static DEFINE_MUTEX(ubd_lock); static DEFINE_MUTEX(ubd_mutex); /* replaces BKL, might not be needed */ -static int ubd_open(struct gendisk *disk, blk_mode_t mode); -static void ubd_release(struct gendisk *disk); static int ubd_ioctl(struct block_device *bdev, blk_mode_t mode, unsigned int cmd, unsigned long arg); static int ubd_getgeo(struct block_device *bdev, struct hd_geometry *geo); @@ -118,16 +116,11 @@ static int ubd_getgeo(struct block_device *bdev, struct hd_geometry *geo); static const struct block_device_operations ubd_blops = { .owner = THIS_MODULE, - .open = ubd_open, - .release = ubd_release, .ioctl = ubd_ioctl, .compat_ioctl = blkdev_compat_ptr_ioctl, .getgeo = ubd_getgeo, }; -/* Protected by ubd_lock */ -static struct gendisk *ubd_gendisk[MAX_DEV]; - #ifdef CONFIG_BLK_DEV_UBD_SYNC #define OPEN_FLAGS ((struct openflags) { .r = 1, .w = 1, .s = 1, .c = 0, \ .cl = 1 }) @@ -155,7 +148,6 @@ struct ubd { * backing or the cow file. */ char *file; char *serial; - int count; int fd; __u64 size; struct openflags boot_openflags; @@ -165,7 +157,7 @@ struct ubd { unsigned no_trim:1; struct cow cow; struct platform_device pdev; - struct request_queue *queue; + struct gendisk *disk; struct blk_mq_tag_set tag_set; spinlock_t lock; }; @@ -181,7 +173,6 @@ struct ubd { #define DEFAULT_UBD { \ .file = NULL, \ .serial = NULL, \ - .count = 0, \ .fd = -1, \ .size = -1, \ .boot_openflags = OPEN_FLAGS, \ @@ -774,8 +765,6 @@ static int ubd_open_dev(struct ubd *ubd_dev) ubd_dev->fd = fd; if(ubd_dev->cow.file != NULL){ - blk_queue_max_hw_sectors(ubd_dev->queue, 8 * sizeof(long)); - err = -ENOMEM; ubd_dev->cow.bitmap = vmalloc(ubd_dev->cow.bitmap_len); if(ubd_dev->cow.bitmap == NULL){ @@ -797,11 +786,6 @@ static int ubd_open_dev(struct ubd *ubd_dev) if(err < 0) goto error; ubd_dev->cow.fd = err; } - if (ubd_dev->no_trim == 0) { - blk_queue_max_discard_sectors(ubd_dev->queue, UBD_MAX_REQUEST); - blk_queue_max_write_zeroes_sectors(ubd_dev->queue, UBD_MAX_REQUEST); - } - blk_queue_flag_set(QUEUE_FLAG_NONROT, ubd_dev->queue); return 0; error: os_close_file(ubd_dev->fd); @@ -851,27 +835,6 @@ static const struct attribute_group *ubd_attr_groups[] = { NULL, }; -static int ubd_disk_register(int major, u64 size, int unit, - struct gendisk *disk) -{ - disk->major = major; - disk->first_minor = unit << UBD_SHIFT; - disk->minors = 1 << UBD_SHIFT; - disk->fops = &ubd_blops; - set_capacity(disk, size / 512); - sprintf(disk->disk_name, "ubd%c", 'a' + unit); - - ubd_devs[unit].pdev.id = unit; - ubd_devs[unit].pdev.name = DRIVER_NAME; - ubd_devs[unit].pdev.dev.release = ubd_device_release; - dev_set_drvdata(&ubd_devs[unit].pdev.dev, &ubd_devs[unit]); - platform_device_register(&ubd_devs[unit].pdev); - - disk->private_data = &ubd_devs[unit]; - disk->queue = ubd_devs[unit].queue; - return device_add_disk(&ubd_devs[unit].pdev.dev, disk, ubd_attr_groups); -} - #define ROUND_BLOCK(n) ((n + (SECTOR_SIZE - 1)) & (-SECTOR_SIZE)) static const struct blk_mq_ops ubd_mq_ops = { @@ -881,18 +844,36 @@ static const struct blk_mq_ops ubd_mq_ops = { static int ubd_add(int n, char **error_out) { struct ubd *ubd_dev = &ubd_devs[n]; + struct queue_limits lim = { + .max_segments = MAX_SG, + .seg_boundary_mask = PAGE_SIZE - 1, + }; struct gendisk *disk; int err = 0; if(ubd_dev->file == NULL) goto out; + if (ubd_dev->cow.file) + lim.max_hw_sectors = 8 * sizeof(long); + if (!ubd_dev->no_trim) { + lim.max_hw_discard_sectors = UBD_MAX_REQUEST; + lim.max_write_zeroes_sectors = UBD_MAX_REQUEST; + } + err = ubd_file_size(ubd_dev, &ubd_dev->size); if(err < 0){ *error_out = "Couldn't determine size of device's file"; goto out; } + err = ubd_open_dev(ubd_dev); + if (err) { + pr_err("ubd%c: Can't open \"%s\": errno = %d\n", + 'a' + n, ubd_dev->file, -err); + goto out; + } + ubd_dev->size = ROUND_BLOCK(ubd_dev->size); ubd_dev->tag_set.ops = &ubd_mq_ops; @@ -904,29 +885,43 @@ static int ubd_add(int n, char **error_out) err = blk_mq_alloc_tag_set(&ubd_dev->tag_set); if (err) - goto out; + goto out_close; - disk = blk_mq_alloc_disk(&ubd_dev->tag_set, ubd_dev); + disk = blk_mq_alloc_disk(&ubd_dev->tag_set, &lim, ubd_dev); if (IS_ERR(disk)) { err = PTR_ERR(disk); goto out_cleanup_tags; } - ubd_dev->queue = disk->queue; - blk_queue_write_cache(ubd_dev->queue, true, false); - blk_queue_max_segments(ubd_dev->queue, MAX_SG); - blk_queue_segment_boundary(ubd_dev->queue, PAGE_SIZE - 1); - err = ubd_disk_register(UBD_MAJOR, ubd_dev->size, n, disk); + blk_queue_flag_set(QUEUE_FLAG_NONROT, disk->queue); + blk_queue_write_cache(disk->queue, true, false); + disk->major = UBD_MAJOR; + disk->first_minor = n << UBD_SHIFT; + disk->minors = 1 << UBD_SHIFT; + disk->fops = &ubd_blops; + set_capacity(disk, ubd_dev->size / 512); + sprintf(disk->disk_name, "ubd%c", 'a' + n); + disk->private_data = ubd_dev; + set_disk_ro(disk, !ubd_dev->openflags.w); + + ubd_dev->pdev.id = n; + ubd_dev->pdev.name = DRIVER_NAME; + ubd_dev->pdev.dev.release = ubd_device_release; + dev_set_drvdata(&ubd_dev->pdev.dev, ubd_dev); + platform_device_register(&ubd_dev->pdev); + + err = device_add_disk(&ubd_dev->pdev.dev, disk, ubd_attr_groups); if (err) goto out_cleanup_disk; - ubd_gendisk[n] = disk; return 0; out_cleanup_disk: put_disk(disk); out_cleanup_tags: blk_mq_free_tag_set(&ubd_dev->tag_set); +out_close: + ubd_close_dev(ubd_dev); out: return err; } @@ -1012,7 +1007,6 @@ static int ubd_id(char **str, int *start_out, int *end_out) static int ubd_remove(int n, char **error_out) { - struct gendisk *disk = ubd_gendisk[n]; struct ubd *ubd_dev; int err = -ENODEV; @@ -1023,15 +1017,15 @@ static int ubd_remove(int n, char **error_out) if(ubd_dev->file == NULL) goto out; - /* you cannot remove a open disk */ - err = -EBUSY; - if(ubd_dev->count > 0) - goto out; + if (ubd_dev->disk) { + /* you cannot remove a open disk */ + err = -EBUSY; + if (disk_openers(ubd_dev->disk)) + goto out; - ubd_gendisk[n] = NULL; - if(disk != NULL){ - del_gendisk(disk); - put_disk(disk); + del_gendisk(ubd_dev->disk); + ubd_close_dev(ubd_dev); + put_disk(ubd_dev->disk); } err = 0; @@ -1153,37 +1147,6 @@ static int __init ubd_driver_init(void){ device_initcall(ubd_driver_init); -static int ubd_open(struct gendisk *disk, blk_mode_t mode) -{ - struct ubd *ubd_dev = disk->private_data; - int err = 0; - - mutex_lock(&ubd_mutex); - if(ubd_dev->count == 0){ - err = ubd_open_dev(ubd_dev); - if(err){ - printk(KERN_ERR "%s: Can't open \"%s\": errno = %d\n", - disk->disk_name, ubd_dev->file, -err); - goto out; - } - } - ubd_dev->count++; - set_disk_ro(disk, !ubd_dev->openflags.w); -out: - mutex_unlock(&ubd_mutex); - return err; -} - -static void ubd_release(struct gendisk *disk) -{ - struct ubd *ubd_dev = disk->private_data; - - mutex_lock(&ubd_mutex); - if(--ubd_dev->count == 0) - ubd_close_dev(ubd_dev); - mutex_unlock(&ubd_mutex); -} - static void cowify_bitmap(__u64 io_offset, int length, unsigned long *cow_mask, __u64 *cow_offset, unsigned long *bitmap, __u64 bitmap_offset, unsigned long *bitmap_words, diff --git a/arch/um/include/asm/cpufeature.h b/arch/um/include/asm/cpufeature.h index 4b6d1b526bc1..66fe06db872f 100644 --- a/arch/um/include/asm/cpufeature.h +++ b/arch/um/include/asm/cpufeature.h @@ -75,7 +75,7 @@ extern void setup_clear_cpu_cap(unsigned int bit); */ static __always_inline bool _static_cpu_has(u16 bit) { - asm_volatile_goto("1: jmp 6f\n" + asm goto("1: jmp 6f\n" "2:\n" ".skip -(((5f-4f) - (2b-1b)) > 0) * " "((5f-4f) - (2b-1b)),0x90\n" diff --git a/arch/x86/Kbuild b/arch/x86/Kbuild index 5a83da703e87..6a1f36df6a18 100644 --- a/arch/x86/Kbuild +++ b/arch/x86/Kbuild @@ -28,5 +28,7 @@ obj-y += net/ obj-$(CONFIG_KEXEC_FILE) += purgatory/ +obj-y += virt/svm/ + # for cleaning subdir- += boot tools diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 5edec175b9bf..e88f6f7b6b41 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -147,6 +147,7 @@ config X86 select EDAC_ATOMIC_SCRUB select EDAC_SUPPORT select GENERIC_CLOCKEVENTS_BROADCAST if X86_64 || (X86_32 && X86_LOCAL_APIC) + select GENERIC_CLOCKEVENTS_BROADCAST_IDLE if GENERIC_CLOCKEVENTS_BROADCAST select GENERIC_CLOCKEVENTS_MIN_ADJUST select GENERIC_CMOS_UPDATE select GENERIC_CPU_AUTOPROBE @@ -496,6 +497,15 @@ config X86_CPU_RESCTRL Say N if unsure. +config X86_FRED + bool "Flexible Return and Event Delivery" + depends on X86_64 + help + When enabled, try to use Flexible Return and Event Delivery + instead of the legacy SYSCALL/SYSENTER/IDT architecture for + ring transitions and exception/interrupt handling if the + system supports. + if X86_32 config X86_BIGSMP bool "Support for big SMP systems with more than 8 CPUs" @@ -1539,19 +1549,6 @@ config AMD_MEM_ENCRYPT This requires an AMD processor that supports Secure Memory Encryption (SME). -config AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT - bool "Activate AMD Secure Memory Encryption (SME) by default" - depends on AMD_MEM_ENCRYPT - help - Say yes to have system memory encrypted by default if running on - an AMD processor that supports Secure Memory Encryption (SME). - - If set to Y, then the encryption of system memory can be - deactivated with the mem_encrypt=off command line option. - - If set to N, then the encryption of system memory can be - activated with the mem_encrypt=on command line option. - # Common NUMA Features config NUMA bool "NUMA Memory Allocation and Scheduler Support" @@ -2114,11 +2111,11 @@ config PHYSICAL_START help This gives the physical address where the kernel is loaded. - If kernel is a not relocatable (CONFIG_RELOCATABLE=n) then - bzImage will decompress itself to above physical address and - run from there. Otherwise, bzImage will run from the address where - it has been loaded by the boot loader and will ignore above physical - address. + If the kernel is not relocatable (CONFIG_RELOCATABLE=n) then bzImage + will decompress itself to above physical address and run from there. + Otherwise, bzImage will run from the address where it has been loaded + by the boot loader. The only exception is if it is loaded below the + above physical address, in which case it will relocate itself there. In normal kdump cases one does not have to set/change this option as now bzImage can be compiled as a completely relocatable image @@ -2434,6 +2431,18 @@ source "kernel/livepatch/Kconfig" endmenu +config CC_HAS_NAMED_AS + def_bool CC_IS_GCC && GCC_VERSION >= 120100 + +config USE_X86_SEG_SUPPORT + def_bool y + depends on CC_HAS_NAMED_AS + # + # -fsanitize=kernel-address (KASAN) is at the moment incompatible + # with named address spaces - see GCC PR sanitizer/111736. + # + depends on !KASAN + config CC_HAS_SLS def_bool $(cc-option,-mharden-sls=all) @@ -2465,12 +2474,12 @@ config CALL_PADDING config FINEIBT def_bool y - depends on X86_KERNEL_IBT && CFI_CLANG && RETPOLINE + depends on X86_KERNEL_IBT && CFI_CLANG && MITIGATION_RETPOLINE select CALL_PADDING config HAVE_CALL_THUNKS def_bool y - depends on CC_HAS_ENTRY_PADDING && RETHUNK && OBJTOOL + depends on CC_HAS_ENTRY_PADDING && MITIGATION_RETHUNK && OBJTOOL config CALL_THUNKS def_bool n @@ -2492,7 +2501,7 @@ menuconfig SPECULATION_MITIGATIONS if SPECULATION_MITIGATIONS -config PAGE_TABLE_ISOLATION +config MITIGATION_PAGE_TABLE_ISOLATION bool "Remove the kernel mapping in user mode" default y depends on (X86_64 || X86_PAE) @@ -2503,7 +2512,7 @@ config PAGE_TABLE_ISOLATION See Documentation/arch/x86/pti.rst for more details. -config RETPOLINE +config MITIGATION_RETPOLINE bool "Avoid speculative indirect branches in kernel" select OBJTOOL if HAVE_OBJTOOL default y @@ -2513,9 +2522,9 @@ config RETPOLINE branches. Requires a compiler with -mindirect-branch=thunk-extern support for full protection. The kernel may run slower. -config RETHUNK +config MITIGATION_RETHUNK bool "Enable return-thunks" - depends on RETPOLINE && CC_HAS_RETURN_THUNK + depends on MITIGATION_RETPOLINE && CC_HAS_RETURN_THUNK select OBJTOOL if HAVE_OBJTOOL default y if X86_64 help @@ -2524,14 +2533,14 @@ config RETHUNK Requires a compiler with -mfunction-return=thunk-extern support for full protection. The kernel may run slower. -config CPU_UNRET_ENTRY +config MITIGATION_UNRET_ENTRY bool "Enable UNRET on kernel entry" - depends on CPU_SUP_AMD && RETHUNK && X86_64 + depends on CPU_SUP_AMD && MITIGATION_RETHUNK && X86_64 default y help Compile the kernel with support for the retbleed=unret mitigation. -config CALL_DEPTH_TRACKING +config MITIGATION_CALL_DEPTH_TRACKING bool "Mitigate RSB underflow with call depth tracking" depends on CPU_SUP_INTEL && HAVE_CALL_THUNKS select HAVE_DYNAMIC_FTRACE_NO_PATCHABLE @@ -2551,7 +2560,7 @@ config CALL_DEPTH_TRACKING config CALL_THUNKS_DEBUG bool "Enable call thunks and call depth tracking debugging" - depends on CALL_DEPTH_TRACKING + depends on MITIGATION_CALL_DEPTH_TRACKING select FUNCTION_ALIGNMENT_32B default n help @@ -2562,14 +2571,14 @@ config CALL_THUNKS_DEBUG Only enable this when you are debugging call thunks as this creates a noticeable runtime overhead. If unsure say N. -config CPU_IBPB_ENTRY +config MITIGATION_IBPB_ENTRY bool "Enable IBPB on kernel entry" depends on CPU_SUP_AMD && X86_64 default y help Compile the kernel with support for the retbleed=ibpb mitigation. -config CPU_IBRS_ENTRY +config MITIGATION_IBRS_ENTRY bool "Enable IBRS on kernel entry" depends on CPU_SUP_INTEL && X86_64 default y @@ -2578,14 +2587,14 @@ config CPU_IBRS_ENTRY This mitigates both spectre_v2 and retbleed at great cost to performance. -config CPU_SRSO +config MITIGATION_SRSO bool "Mitigate speculative RAS overflow on AMD" - depends on CPU_SUP_AMD && X86_64 && RETHUNK + depends on CPU_SUP_AMD && X86_64 && MITIGATION_RETHUNK default y help Enable the SRSO mitigation needed on AMD Zen1-4 machines. -config SLS +config MITIGATION_SLS bool "Mitigate Straight-Line-Speculation" depends on CC_HAS_SLS && X86_64 select OBJTOOL if HAVE_OBJTOOL @@ -2595,7 +2604,7 @@ config SLS against straight line speculation. The kernel image might be slightly larger. -config GDS_FORCE_MITIGATION +config MITIGATION_GDS_FORCE bool "Force GDS Mitigation" depends on CPU_SUP_INTEL default n @@ -2614,6 +2623,17 @@ config GDS_FORCE_MITIGATION If in doubt, say N. +config MITIGATION_RFDS + bool "RFDS Mitigation" + depends on CPU_SUP_INTEL + default y + help + Enable mitigation for Register File Data Sampling (RFDS) by default. + RFDS is a hardware vulnerability which affects Intel Atom CPUs. It + allows unprivileged speculative access to stale data previously + stored in floating point, vector and integer registers. + See also <file:Documentation/admin-guide/hw-vuln/reg-file-data-sampling.rst> + endif config ARCH_HAS_ADD_PAGES diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu index b9224cf2ee4d..2a7279d80460 100644 --- a/arch/x86/Kconfig.cpu +++ b/arch/x86/Kconfig.cpu @@ -379,7 +379,7 @@ config X86_CMOV config X86_MINIMUM_CPU_FAMILY int default "64" if X86_64 - default "6" if X86_32 && (MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MEFFICEON || MATOM || MCRUSOE || MCORE2 || MK7 || MK8) + default "6" if X86_32 && (MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MEFFICEON || MATOM || MCORE2 || MK7 || MK8) default "5" if X86_32 && X86_CMPXCHG64 default "4" diff --git a/arch/x86/Makefile b/arch/x86/Makefile index 1a068de12a56..1eccc2ee45fb 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -22,7 +22,7 @@ RETPOLINE_VDSO_CFLAGS := -mretpoline endif RETPOLINE_CFLAGS += $(call cc-option,-mindirect-branch-cs-prefix) -ifdef CONFIG_RETHUNK +ifdef CONFIG_MITIGATION_RETHUNK RETHUNK_CFLAGS := -mfunction-return=thunk-extern RETPOLINE_CFLAGS += $(RETHUNK_CFLAGS) endif @@ -53,6 +53,9 @@ REALMODE_CFLAGS += -fno-stack-protector REALMODE_CFLAGS += -Wno-address-of-packed-member REALMODE_CFLAGS += $(cc_stack_align4) REALMODE_CFLAGS += $(CLANG_FLAGS) +ifdef CONFIG_CC_IS_CLANG +REALMODE_CFLAGS += -Wno-gnu +endif export REALMODE_CFLAGS # BITS is used as extension for files which are available in a 32 bit @@ -112,13 +115,13 @@ ifeq ($(CONFIG_X86_32),y) # temporary until string.h is fixed KBUILD_CFLAGS += -ffreestanding - ifeq ($(CONFIG_STACKPROTECTOR),y) - ifeq ($(CONFIG_SMP),y) + ifeq ($(CONFIG_STACKPROTECTOR),y) + ifeq ($(CONFIG_SMP),y) KBUILD_CFLAGS += -mstack-protector-guard-reg=fs -mstack-protector-guard-symbol=__stack_chk_guard - else + else KBUILD_CFLAGS += -mstack-protector-guard=global - endif - endif + endif + endif else BITS := 64 UTS_MACHINE := x86_64 @@ -192,7 +195,7 @@ KBUILD_CFLAGS += -Wno-sign-compare KBUILD_CFLAGS += -fno-asynchronous-unwind-tables # Avoid indirect branches in kernel to deal with Spectre -ifdef CONFIG_RETPOLINE +ifdef CONFIG_MITIGATION_RETPOLINE KBUILD_CFLAGS += $(RETPOLINE_CFLAGS) # Additionally, avoid generating expensive indirect jumps which # are subject to retpolines for small number of switch cases. @@ -205,7 +208,7 @@ ifdef CONFIG_RETPOLINE endif endif -ifdef CONFIG_SLS +ifdef CONFIG_MITIGATION_SLS KBUILD_CFLAGS += -mharden-sls=all endif @@ -296,12 +299,11 @@ install: vdso-install-$(CONFIG_X86_64) += arch/x86/entry/vdso/vdso64.so.dbg vdso-install-$(CONFIG_X86_X32_ABI) += arch/x86/entry/vdso/vdsox32.so.dbg -vdso-install-$(CONFIG_X86_32) += arch/x86/entry/vdso/vdso32.so.dbg -vdso-install-$(CONFIG_IA32_EMULATION) += arch/x86/entry/vdso/vdso32.so.dbg +vdso-install-$(CONFIG_COMPAT_32) += arch/x86/entry/vdso/vdso32.so.dbg archprepare: checkbin checkbin: -ifdef CONFIG_RETPOLINE +ifdef CONFIG_MITIGATION_RETPOLINE ifeq ($(RETPOLINE_CFLAGS),) @echo "You are building kernel with non-retpoline compiler." >&2 @echo "Please update your compiler." >&2 diff --git a/arch/x86/boot/compressed/acpi.c b/arch/x86/boot/compressed/acpi.c index 18d15d1ce87d..f196b1d1ddf8 100644 --- a/arch/x86/boot/compressed/acpi.c +++ b/arch/x86/boot/compressed/acpi.c @@ -5,6 +5,8 @@ #include "../string.h" #include "efi.h" +#include <asm/bootparam.h> + #include <linux/numa.h> /* diff --git a/arch/x86/boot/compressed/cmdline.c b/arch/x86/boot/compressed/cmdline.c index c1bb180973ea..e162d7f59cc5 100644 --- a/arch/x86/boot/compressed/cmdline.c +++ b/arch/x86/boot/compressed/cmdline.c @@ -1,6 +1,8 @@ // SPDX-License-Identifier: GPL-2.0 #include "misc.h" +#include <asm/bootparam.h> + static unsigned long fs; static inline void set_fs(unsigned long seg) { diff --git a/arch/x86/boot/compressed/efi.c b/arch/x86/boot/compressed/efi.c index 6edd034b0b30..f2e50f9758e6 100644 --- a/arch/x86/boot/compressed/efi.c +++ b/arch/x86/boot/compressed/efi.c @@ -7,6 +7,8 @@ #include "misc.h" +#include <asm/bootparam.h> + /** * efi_get_type - Given a pointer to boot_params, determine the type of EFI environment. * diff --git a/arch/x86/boot/compressed/efi.h b/arch/x86/boot/compressed/efi.h index 866c0af8b5b9..b22300970f97 100644 --- a/arch/x86/boot/compressed/efi.h +++ b/arch/x86/boot/compressed/efi.h @@ -97,15 +97,6 @@ typedef struct { u32 tables; } efi_system_table_32_t; -/* kexec external ABI */ -struct efi_setup_data { - u64 fw_vendor; - u64 __unused; - u64 tables; - u64 smbios; - u64 reserved[8]; -}; - struct efi_unaccepted_memory { u32 version; u32 unit_size; diff --git a/arch/x86/boot/compressed/ident_map_64.c b/arch/x86/boot/compressed/ident_map_64.c index d040080d7edb..909f2a35b60c 100644 --- a/arch/x86/boot/compressed/ident_map_64.c +++ b/arch/x86/boot/compressed/ident_map_64.c @@ -8,8 +8,8 @@ * Copyright (C) 2016 Kees Cook */ -/* No PAGE_TABLE_ISOLATION support needed either: */ -#undef CONFIG_PAGE_TABLE_ISOLATION +/* No MITIGATION_PAGE_TABLE_ISOLATION support needed either: */ +#undef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION #include "error.h" #include "misc.h" @@ -389,5 +389,5 @@ void do_boot_page_fault(struct pt_regs *regs, unsigned long error_code) void do_boot_nmi_trap(struct pt_regs *regs, unsigned long error_code) { - /* Empty handler to ignore NMI during early boot */ + spurious_nmi_count++; } diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c index b99e08e6815b..408507e305be 100644 --- a/arch/x86/boot/compressed/misc.c +++ b/arch/x86/boot/compressed/misc.c @@ -52,6 +52,7 @@ struct port_io_ops pio_ops; memptr free_mem_ptr; memptr free_mem_end_ptr; +int spurious_nmi_count; static char *vidmem; static int vidport; @@ -164,21 +165,34 @@ void __putstr(const char *s) outb(0xff & (pos >> 1), vidport+1); } -void __puthex(unsigned long value) +static noinline void __putnum(unsigned long value, unsigned int base, + int mindig) { - char alpha[2] = "0"; - int bits; + char buf[8*sizeof(value)+1]; + char *p; - for (bits = sizeof(value) * 8 - 4; bits >= 0; bits -= 4) { - unsigned long digit = (value >> bits) & 0xf; + p = buf + sizeof(buf); + *--p = '\0'; - if (digit < 0xA) - alpha[0] = '0' + digit; - else - alpha[0] = 'a' + (digit - 0xA); + while (mindig-- > 0 || value) { + unsigned char digit = value % base; + digit += (digit >= 10) ? ('a'-10) : '0'; + *--p = digit; - __putstr(alpha); + value /= base; } + + __putstr(p); +} + +void __puthex(unsigned long value) +{ + __putnum(value, 16, sizeof(value)*2); +} + +void __putdec(unsigned long value) +{ + __putnum(value, 10, 1); } #ifdef CONFIG_X86_NEED_RELOCS @@ -358,6 +372,19 @@ unsigned long decompress_kernel(unsigned char *outbuf, unsigned long virt_addr, } /* + * Set the memory encryption xloadflag based on the mem_encrypt= command line + * parameter, if provided. + */ +static void parse_mem_encrypt(struct setup_header *hdr) +{ + int on = cmdline_find_option_bool("mem_encrypt=on"); + int off = cmdline_find_option_bool("mem_encrypt=off"); + + if (on > off) + hdr->xloadflags |= XLF_MEM_ENCRYPTION; +} + +/* * The compressed kernel image (ZO), has been moved so that its position * is against the end of the buffer used to hold the uncompressed kernel * image (VO) and the execution environment (.bss, .brk), which makes sure @@ -387,6 +414,8 @@ asmlinkage __visible void *extract_kernel(void *rmode, unsigned char *output) /* Clear flags intended for solely in-kernel use. */ boot_params_ptr->hdr.loadflags &= ~KASLR_FLAG; + parse_mem_encrypt(&boot_params_ptr->hdr); + sanitize_boot_params(boot_params_ptr); if (boot_params_ptr->screen_info.orig_video_mode == 7) { @@ -493,6 +522,12 @@ asmlinkage __visible void *extract_kernel(void *rmode, unsigned char *output) /* Disable exception handling before booting the kernel */ cleanup_exception_handling(); + if (spurious_nmi_count) { + error_putstr("Spurious early NMIs ignored: "); + error_putdec(spurious_nmi_count); + error_putstr("\n"); + } + return output + entry_offset; } diff --git a/arch/x86/boot/compressed/misc.h b/arch/x86/boot/compressed/misc.h index bc2f0f17fb90..b353a7be380c 100644 --- a/arch/x86/boot/compressed/misc.h +++ b/arch/x86/boot/compressed/misc.h @@ -59,12 +59,15 @@ extern char _head[], _end[]; /* misc.c */ extern memptr free_mem_ptr; extern memptr free_mem_end_ptr; +extern int spurious_nmi_count; void *malloc(int size); void free(void *where); void __putstr(const char *s); void __puthex(unsigned long value); +void __putdec(unsigned long value); #define error_putstr(__x) __putstr(__x) #define error_puthex(__x) __puthex(__x) +#define error_putdec(__x) __putdec(__x) #ifdef CONFIG_X86_VERBOSE_BOOTUP diff --git a/arch/x86/boot/compressed/pgtable_64.c b/arch/x86/boot/compressed/pgtable_64.c index 51f957b24ba7..c882e1f67af0 100644 --- a/arch/x86/boot/compressed/pgtable_64.c +++ b/arch/x86/boot/compressed/pgtable_64.c @@ -1,5 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 #include "misc.h" +#include <asm/bootparam.h> #include <asm/e820/types.h> #include <asm/processor.h> #include "pgtable.h" diff --git a/arch/x86/boot/compressed/sev.c b/arch/x86/boot/compressed/sev.c index 454acd7a2daf..ec71846d28c9 100644 --- a/arch/x86/boot/compressed/sev.c +++ b/arch/x86/boot/compressed/sev.c @@ -12,6 +12,7 @@ */ #include "misc.h" +#include <asm/bootparam.h> #include <asm/pgtable_types.h> #include <asm/sev.h> #include <asm/trapnr.h> @@ -116,6 +117,9 @@ static bool fault_in_kernel_space(unsigned long address) #undef __init #define __init +#undef __head +#define __head + #define __BOOT_COMPRESSED /* Basic instruction decoding support needed */ @@ -304,6 +308,10 @@ void do_boot_stage2_vc(struct pt_regs *regs, unsigned long exit_code) if (result != ES_OK) goto finish; + result = vc_check_opcode_bytes(&ctxt, exit_code); + if (result != ES_OK) + goto finish; + switch (exit_code) { case SVM_EXIT_RDTSC: case SVM_EXIT_RDTSCP: @@ -365,7 +373,7 @@ static void enforce_vmpl0(void) MSR_AMD64_SNP_VMPL_SSS | \ MSR_AMD64_SNP_SECURE_TSC | \ MSR_AMD64_SNP_VMGEXIT_PARAM | \ - MSR_AMD64_SNP_VMSA_REG_PROTECTION | \ + MSR_AMD64_SNP_VMSA_REG_PROT | \ MSR_AMD64_SNP_RESERVED_BIT13 | \ MSR_AMD64_SNP_RESERVED_BIT15 | \ MSR_AMD64_SNP_RESERVED_MASK) diff --git a/arch/x86/boot/header.S b/arch/x86/boot/header.S index b2771710ed98..b5c79f43359b 100644 --- a/arch/x86/boot/header.S +++ b/arch/x86/boot/header.S @@ -106,17 +106,12 @@ extra_header_fields: .word 0 # MinorSubsystemVersion .long 0 # Win32VersionValue - .long setup_size + ZO__end + pecompat_vsize - # SizeOfImage + .long setup_size + ZO__end # SizeOfImage .long salign # SizeOfHeaders .long 0 # CheckSum .word IMAGE_SUBSYSTEM_EFI_APPLICATION # Subsystem (EFI application) -#ifdef CONFIG_EFI_DXE_MEM_ATTRIBUTES .word IMAGE_DLL_CHARACTERISTICS_NX_COMPAT # DllCharacteristics -#else - .word 0 # DllCharacteristics -#endif #ifdef CONFIG_X86_32 .long 0 # SizeOfStackReserve .long 0 # SizeOfStackCommit @@ -143,7 +138,7 @@ section_table: .ascii ".setup" .byte 0 .byte 0 - .long setup_size - salign # VirtualSize + .long pecompat_fstart - salign # VirtualSize .long salign # VirtualAddress .long pecompat_fstart - salign # SizeOfRawData .long salign # PointerToRawData @@ -156,8 +151,8 @@ section_table: #ifdef CONFIG_EFI_MIXED .asciz ".compat" - .long 8 # VirtualSize - .long setup_size + ZO__end # VirtualAddress + .long pecompat_fsize # VirtualSize + .long pecompat_fstart # VirtualAddress .long pecompat_fsize # SizeOfRawData .long pecompat_fstart # PointerToRawData @@ -172,17 +167,16 @@ section_table: * modes this image supports. */ .pushsection ".pecompat", "a", @progbits - .balign falign - .set pecompat_vsize, salign + .balign salign .globl pecompat_fstart pecompat_fstart: .byte 0x1 # Version .byte 8 # Size .word IMAGE_FILE_MACHINE_I386 # PE machine type .long setup_size + ZO_efi32_pe_entry # Entrypoint + .byte 0x0 # Sentinel .popsection #else - .set pecompat_vsize, 0 .set pecompat_fstart, setup_size #endif .ascii ".text" diff --git a/arch/x86/boot/setup.ld b/arch/x86/boot/setup.ld index 83bb7efad8ae..3a2d1360abb0 100644 --- a/arch/x86/boot/setup.ld +++ b/arch/x86/boot/setup.ld @@ -24,6 +24,9 @@ SECTIONS .text : { *(.text .text.*) } .text32 : { *(.text32) } + .pecompat : { *(.pecompat) } + PROVIDE(pecompat_fsize = setup_size - pecompat_fstart); + . = ALIGN(16); .rodata : { *(.rodata*) } @@ -36,9 +39,6 @@ SECTIONS . = ALIGN(16); .data : { *(.data*) } - .pecompat : { *(.pecompat) } - PROVIDE(pecompat_fsize = setup_size - pecompat_fstart); - .signature : { setup_sig = .; LONG(0x5a5aaa55) diff --git a/arch/x86/coco/core.c b/arch/x86/coco/core.c index eeec9986570e..d07be9d05cd0 100644 --- a/arch/x86/coco/core.c +++ b/arch/x86/coco/core.c @@ -14,7 +14,7 @@ #include <asm/processor.h> enum cc_vendor cc_vendor __ro_after_init = CC_VENDOR_NONE; -static u64 cc_mask __ro_after_init; +u64 cc_mask __ro_after_init; static bool noinstr intel_cc_platform_has(enum cc_attr attr) { @@ -148,8 +148,3 @@ u64 cc_mkdec(u64 val) } } EXPORT_SYMBOL_GPL(cc_mkdec); - -__init void cc_set_mask(u64 mask) -{ - cc_mask = mask; -} diff --git a/arch/x86/configs/i386_defconfig b/arch/x86/configs/i386_defconfig index 73abbbdd26f8..91801138b10b 100644 --- a/arch/x86/configs/i386_defconfig +++ b/arch/x86/configs/i386_defconfig @@ -42,7 +42,7 @@ CONFIG_EFI_STUB=y CONFIG_HZ_1000=y CONFIG_KEXEC=y CONFIG_CRASH_DUMP=y -# CONFIG_RETHUNK is not set +# CONFIG_MITIGATION_RETHUNK is not set CONFIG_HIBERNATION=y CONFIG_PM_DEBUG=y CONFIG_PM_TRACE_RTC=y diff --git a/arch/x86/entry/Makefile b/arch/x86/entry/Makefile index ca2fe186994b..c93e7f5c2a06 100644 --- a/arch/x86/entry/Makefile +++ b/arch/x86/entry/Makefile @@ -18,6 +18,9 @@ obj-y += vdso/ obj-y += vsyscall/ obj-$(CONFIG_PREEMPTION) += thunk_$(BITS).o +CFLAGS_entry_fred.o += -fno-stack-protector +CFLAGS_REMOVE_entry_fred.o += -pg $(CC_FLAGS_FTRACE) +obj-$(CONFIG_X86_FRED) += entry_64_fred.o entry_fred.o + obj-$(CONFIG_IA32_EMULATION) += entry_64_compat.o syscall_32.o obj-$(CONFIG_X86_X32_ABI) += syscall_x32.o - diff --git a/arch/x86/entry/calling.h b/arch/x86/entry/calling.h index 9f1d94790a54..ea81770629ee 100644 --- a/arch/x86/entry/calling.h +++ b/arch/x86/entry/calling.h @@ -65,7 +65,7 @@ For 32-bit we have the following conventions - kernel is built with * for assembly code: */ -.macro PUSH_REGS rdx=%rdx rcx=%rcx rax=%rax save_ret=0 +.macro PUSH_REGS rdx=%rdx rcx=%rcx rax=%rax save_ret=0 unwind_hint=1 .if \save_ret pushq %rsi /* pt_regs->si */ movq 8(%rsp), %rsi /* temporarily store the return address in %rsi */ @@ -87,14 +87,17 @@ For 32-bit we have the following conventions - kernel is built with pushq %r13 /* pt_regs->r13 */ pushq %r14 /* pt_regs->r14 */ pushq %r15 /* pt_regs->r15 */ + + .if \unwind_hint UNWIND_HINT_REGS + .endif .if \save_ret pushq %rsi /* return address on top of stack */ .endif .endm -.macro CLEAR_REGS +.macro CLEAR_REGS clear_bp=1 /* * Sanitize registers of values that a speculation attack might * otherwise want to exploit. The lower registers are likely clobbered @@ -109,7 +112,9 @@ For 32-bit we have the following conventions - kernel is built with xorl %r10d, %r10d /* nospec r10 */ xorl %r11d, %r11d /* nospec r11 */ xorl %ebx, %ebx /* nospec rbx */ + .if \clear_bp xorl %ebp, %ebp /* nospec rbp */ + .endif xorl %r12d, %r12d /* nospec r12 */ xorl %r13d, %r13d /* nospec r13 */ xorl %r14d, %r14d /* nospec r14 */ @@ -117,9 +122,9 @@ For 32-bit we have the following conventions - kernel is built with .endm -.macro PUSH_AND_CLEAR_REGS rdx=%rdx rcx=%rcx rax=%rax save_ret=0 - PUSH_REGS rdx=\rdx, rcx=\rcx, rax=\rax, save_ret=\save_ret - CLEAR_REGS +.macro PUSH_AND_CLEAR_REGS rdx=%rdx rcx=%rcx rax=%rax save_ret=0 clear_bp=1 unwind_hint=1 + PUSH_REGS rdx=\rdx, rcx=\rcx, rax=\rax, save_ret=\save_ret unwind_hint=\unwind_hint + CLEAR_REGS clear_bp=\clear_bp .endm .macro POP_REGS pop_rdi=1 @@ -142,10 +147,10 @@ For 32-bit we have the following conventions - kernel is built with .endif .endm -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION /* - * PAGE_TABLE_ISOLATION PGDs are 8k. Flip bit 12 to switch between the two + * MITIGATION_PAGE_TABLE_ISOLATION PGDs are 8k. Flip bit 12 to switch between the two * halves: */ #define PTI_USER_PGTABLE_BIT PAGE_SHIFT @@ -160,7 +165,7 @@ For 32-bit we have the following conventions - kernel is built with .macro ADJUST_KERNEL_CR3 reg:req ALTERNATIVE "", "SET_NOFLUSH_BIT \reg", X86_FEATURE_PCID - /* Clear PCID and "PAGE_TABLE_ISOLATION bit", point CR3 at kernel pagetables: */ + /* Clear PCID and "MITIGATION_PAGE_TABLE_ISOLATION bit", point CR3 at kernel pagetables: */ andq $(~PTI_USER_PGTABLE_AND_PCID_MASK), \reg .endm @@ -173,7 +178,7 @@ For 32-bit we have the following conventions - kernel is built with .endm #define THIS_CPU_user_pcid_flush_mask \ - PER_CPU_VAR(cpu_tlbstate) + TLB_STATE_user_pcid_flush_mask + PER_CPU_VAR(cpu_tlbstate + TLB_STATE_user_pcid_flush_mask) .macro SWITCH_TO_USER_CR3 scratch_reg:req scratch_reg2:req mov %cr3, \scratch_reg @@ -239,17 +244,19 @@ For 32-bit we have the following conventions - kernel is built with .Ldone_\@: .endm -.macro RESTORE_CR3 scratch_reg:req save_reg:req +/* Restore CR3 from a kernel context. May restore a user CR3 value. */ +.macro PARANOID_RESTORE_CR3 scratch_reg:req save_reg:req ALTERNATIVE "jmp .Lend_\@", "", X86_FEATURE_PTI - ALTERNATIVE "jmp .Lwrcr3_\@", "", X86_FEATURE_PCID - /* - * KERNEL pages can always resume with NOFLUSH as we do - * explicit flushes. + * If CR3 contained the kernel page tables at the paranoid exception + * entry, then there is nothing to restore as CR3 is not modified while + * handling the exception. */ bt $PTI_USER_PGTABLE_BIT, \save_reg - jnc .Lnoflush_\@ + jnc .Lend_\@ + + ALTERNATIVE "jmp .Lwrcr3_\@", "", X86_FEATURE_PCID /* * Check if there's a pending flush for the user ASID we're @@ -257,25 +264,17 @@ For 32-bit we have the following conventions - kernel is built with */ movq \save_reg, \scratch_reg andq $(0x7FF), \scratch_reg - bt \scratch_reg, THIS_CPU_user_pcid_flush_mask - jnc .Lnoflush_\@ - btr \scratch_reg, THIS_CPU_user_pcid_flush_mask - jmp .Lwrcr3_\@ + jc .Lwrcr3_\@ -.Lnoflush_\@: SET_NOFLUSH_BIT \save_reg .Lwrcr3_\@: - /* - * The CR3 write could be avoided when not changing its value, - * but would require a CR3 read *and* a scratch register. - */ movq \save_reg, %cr3 .Lend_\@: .endm -#else /* CONFIG_PAGE_TABLE_ISOLATION=n: */ +#else /* CONFIG_MITIGATION_PAGE_TABLE_ISOLATION=n: */ .macro SWITCH_TO_KERNEL_CR3 scratch_reg:req .endm @@ -285,7 +284,7 @@ For 32-bit we have the following conventions - kernel is built with .endm .macro SAVE_AND_SWITCH_TO_KERNEL_CR3 scratch_reg:req save_reg:req .endm -.macro RESTORE_CR3 scratch_reg:req save_reg:req +.macro PARANOID_RESTORE_CR3 scratch_reg:req save_reg:req .endm #endif @@ -303,7 +302,7 @@ For 32-bit we have the following conventions - kernel is built with * Assumes x86_spec_ctrl_{base,current} to have SPEC_CTRL_IBRS set. */ .macro IBRS_ENTER save_reg -#ifdef CONFIG_CPU_IBRS_ENTRY +#ifdef CONFIG_MITIGATION_IBRS_ENTRY ALTERNATIVE "jmp .Lend_\@", "", X86_FEATURE_KERNEL_IBRS movl $MSR_IA32_SPEC_CTRL, %ecx @@ -332,7 +331,7 @@ For 32-bit we have the following conventions - kernel is built with * regs. Must be called after the last RET. */ .macro IBRS_EXIT save_reg -#ifdef CONFIG_CPU_IBRS_ENTRY +#ifdef CONFIG_MITIGATION_IBRS_ENTRY ALTERNATIVE "jmp .Lend_\@", "", X86_FEATURE_KERNEL_IBRS movl $MSR_IA32_SPEC_CTRL, %ecx @@ -426,3 +425,63 @@ For 32-bit we have the following conventions - kernel is built with .endm #endif /* CONFIG_SMP */ + +#ifdef CONFIG_X86_64 + +/* rdi: arg1 ... normal C conventions. rax is saved/restored. */ +.macro THUNK name, func +SYM_FUNC_START(\name) + pushq %rbp + movq %rsp, %rbp + + pushq %rdi + pushq %rsi + pushq %rdx + pushq %rcx + pushq %rax + pushq %r8 + pushq %r9 + pushq %r10 + pushq %r11 + + call \func + + popq %r11 + popq %r10 + popq %r9 + popq %r8 + popq %rax + popq %rcx + popq %rdx + popq %rsi + popq %rdi + popq %rbp + RET +SYM_FUNC_END(\name) + _ASM_NOKPROBE(\name) +.endm + +#else /* CONFIG_X86_32 */ + +/* put return address in eax (arg1) */ +.macro THUNK name, func, put_ret_addr_in_eax=0 +SYM_CODE_START_NOALIGN(\name) + pushl %eax + pushl %ecx + pushl %edx + + .if \put_ret_addr_in_eax + /* Place EIP in the arg1 */ + movl 3*4(%esp), %eax + .endif + + call \func + popl %edx + popl %ecx + popl %eax + RET + _ASM_NOKPROBE(\name) +SYM_CODE_END(\name) + .endm + +#endif diff --git a/arch/x86/entry/entry.S b/arch/x86/entry/entry.S index 8c8d38f0cb1d..d9feadffa972 100644 --- a/arch/x86/entry/entry.S +++ b/arch/x86/entry/entry.S @@ -6,6 +6,11 @@ #include <linux/export.h> #include <linux/linkage.h> #include <asm/msr-index.h> +#include <asm/unwind_hints.h> +#include <asm/segment.h> +#include <asm/cache.h> + +#include "calling.h" .pushsection .noinstr.text, "ax" @@ -20,3 +25,24 @@ SYM_FUNC_END(entry_ibpb) EXPORT_SYMBOL_GPL(entry_ibpb); .popsection + +/* + * Define the VERW operand that is disguised as entry code so that + * it can be referenced with KPTI enabled. This ensure VERW can be + * used late in exit-to-user path after page tables are switched. + */ +.pushsection .entry.text, "ax" + +.align L1_CACHE_BYTES, 0xcc +SYM_CODE_START_NOALIGN(mds_verw_sel) + UNWIND_HINT_UNDEFINED + ANNOTATE_NOENDBR + .word __KERNEL_DS +.align L1_CACHE_BYTES, 0xcc +SYM_CODE_END(mds_verw_sel); +/* For KVM */ +EXPORT_SYMBOL_GPL(mds_verw_sel); + +.popsection + +THUNK warn_thunk_thunk, __warn_thunk diff --git a/arch/x86/entry/entry_32.S b/arch/x86/entry/entry_32.S index c73047bf9f4b..d3a814efbff6 100644 --- a/arch/x86/entry/entry_32.S +++ b/arch/x86/entry/entry_32.S @@ -305,7 +305,7 @@ .macro CHECK_AND_APPLY_ESPFIX #ifdef CONFIG_X86_ESPFIX32 #define GDT_ESPFIX_OFFSET (GDT_ENTRY_ESPFIX_SS * 8) -#define GDT_ESPFIX_SS PER_CPU_VAR(gdt_page) + GDT_ESPFIX_OFFSET +#define GDT_ESPFIX_SS PER_CPU_VAR(gdt_page + GDT_ESPFIX_OFFSET) ALTERNATIVE "jmp .Lend_\@", "", X86_BUG_ESPFIX @@ -649,10 +649,6 @@ SYM_CODE_START_LOCAL(asm_\cfunc) SYM_CODE_END(asm_\cfunc) .endm -.macro idtentry_sysvec vector cfunc - idtentry \vector asm_\cfunc \cfunc has_error_code=0 -.endm - /* * Include the defines which emit the idt entries which are shared * shared between 32 and 64 bit and emit the __irqentry_text_* markers @@ -885,6 +881,7 @@ SYM_FUNC_START(entry_SYSENTER_32) BUG_IF_WRONG_CR3 no_user_check=1 popfl popl %eax + CLEAR_CPU_BUFFERS /* * Return back to the vDSO, which will pop ecx and edx. @@ -954,6 +951,7 @@ restore_all_switch_stack: /* Restore user state */ RESTORE_REGS pop=4 # skip orig_eax/error_code + CLEAR_CPU_BUFFERS .Lirq_return: /* * ARCH_HAS_MEMBARRIER_SYNC_CORE rely on IRET core serialization @@ -1146,6 +1144,7 @@ SYM_CODE_START(asm_exc_nmi) /* Not on SYSENTER stack. */ call exc_nmi + CLEAR_CPU_BUFFERS jmp .Lnmi_return .Lnmi_from_sysenter_stack: diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S index c40f89ab1b4c..8af2a26b24f6 100644 --- a/arch/x86/entry/entry_64.S +++ b/arch/x86/entry/entry_64.S @@ -161,6 +161,7 @@ syscall_return_via_sysret: SYM_INNER_LABEL(entry_SYSRETQ_unsafe_stack, SYM_L_GLOBAL) ANNOTATE_NOENDBR swapgs + CLEAR_CPU_BUFFERS sysretq SYM_INNER_LABEL(entry_SYSRETQ_end, SYM_L_GLOBAL) ANNOTATE_NOENDBR @@ -190,7 +191,7 @@ SYM_FUNC_START(__switch_to_asm) #ifdef CONFIG_STACKPROTECTOR movq TASK_stack_canary(%rsi), %rbx - movq %rbx, PER_CPU_VAR(fixed_percpu_data) + FIXED_stack_canary + movq %rbx, PER_CPU_VAR(fixed_percpu_data + FIXED_stack_canary) #endif /* @@ -247,7 +248,13 @@ SYM_CODE_START(ret_from_fork_asm) * and unwind should work normally. */ UNWIND_HINT_REGS + +#ifdef CONFIG_X86_FRED + ALTERNATIVE "jmp swapgs_restore_regs_and_return_to_usermode", \ + "jmp asm_fred_exit_user", X86_FEATURE_FRED +#else jmp swapgs_restore_regs_and_return_to_usermode +#endif SYM_CODE_END(ret_from_fork_asm) .popsection @@ -370,14 +377,6 @@ SYM_CODE_END(\asmsym) idtentry \vector asm_\cfunc \cfunc has_error_code=1 .endm -/* - * System vectors which invoke their handlers directly and are not - * going through the regular common device interrupt handling code. - */ -.macro idtentry_sysvec vector cfunc - idtentry \vector asm_\cfunc \cfunc has_error_code=0 -.endm - /** * idtentry_mce_db - Macro to generate entry stubs for #MC and #DB * @vector: Vector number @@ -562,7 +561,7 @@ SYM_INNER_LABEL(swapgs_restore_regs_and_return_to_usermode, SYM_L_GLOBAL) #ifdef CONFIG_XEN_PV ALTERNATIVE "", "jmp xenpv_restore_regs_and_return_to_usermode", X86_FEATURE_XENPV #endif -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION ALTERNATIVE "", "jmp .Lpti_restore_regs_and_return_to_usermode", X86_FEATURE_PTI #endif @@ -573,12 +572,13 @@ SYM_INNER_LABEL(swapgs_restore_regs_and_return_to_usermode, SYM_L_GLOBAL) .Lswapgs_and_iret: swapgs + CLEAR_CPU_BUFFERS /* Assert that the IRET frame indicates user mode. */ testb $3, 8(%rsp) jnz .Lnative_iret ud2 -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION .Lpti_restore_regs_and_return_to_usermode: POP_REGS pop_rdi=0 @@ -723,6 +723,8 @@ native_irq_return_ldt: */ popq %rax /* Restore user RAX */ + CLEAR_CPU_BUFFERS + /* * RSP now points to an ordinary IRET frame, except that the page * is read-only and RSP[31:16] are preloaded with the userspace @@ -968,14 +970,14 @@ SYM_CODE_START_LOCAL(paranoid_exit) IBRS_EXIT save_reg=%r15 /* - * The order of operations is important. RESTORE_CR3 requires + * The order of operations is important. PARANOID_RESTORE_CR3 requires * kernel GSBASE. * * NB to anyone to try to optimize this code: this code does * not execute at all for exceptions from user mode. Those * exceptions go through error_return instead. */ - RESTORE_CR3 scratch_reg=%rax save_reg=%r14 + PARANOID_RESTORE_CR3 scratch_reg=%rax save_reg=%r14 /* Handle the three GSBASE cases */ ALTERNATIVE "jmp .Lparanoid_exit_checkgs", "", X86_FEATURE_FSGSBASE @@ -1096,7 +1098,7 @@ SYM_CODE_END(error_return) * * Registers: * %r14: Used to save/restore the CR3 of the interrupted context - * when PAGE_TABLE_ISOLATION is in use. Do not clobber. + * when MITIGATION_PAGE_TABLE_ISOLATION is in use. Do not clobber. */ SYM_CODE_START(asm_exc_nmi) UNWIND_HINT_IRET_ENTRY @@ -1404,8 +1406,7 @@ end_repeat_nmi: /* Always restore stashed SPEC_CTRL value (see paranoid_entry) */ IBRS_EXIT save_reg=%r15 - /* Always restore stashed CR3 value (see paranoid_entry) */ - RESTORE_CR3 scratch_reg=%r15 save_reg=%r14 + PARANOID_RESTORE_CR3 scratch_reg=%r15 save_reg=%r14 /* * The above invocation of paranoid_entry stored the GSBASE @@ -1450,6 +1451,12 @@ nmi_restore: movq $0, 5*8(%rsp) /* clear "NMI executing" */ /* + * Skip CLEAR_CPU_BUFFERS here, since it only helps in rare cases like + * NMI in kernel after user state is restored. For an unprivileged user + * these conditions are hard to meet. + */ + + /* * iretq reads the "iret" frame and exits the NMI stack in a * single instruction. We are returning to kernel mode, so this * cannot result in a fault. Similarly, we don't need to worry @@ -1466,6 +1473,7 @@ SYM_CODE_START(entry_SYSCALL32_ignore) UNWIND_HINT_END_OF_STACK ENDBR mov $-ENOSYS, %eax + CLEAR_CPU_BUFFERS sysretl SYM_CODE_END(entry_SYSCALL32_ignore) diff --git a/arch/x86/entry/entry_64_compat.S b/arch/x86/entry/entry_64_compat.S index de94e2e84ecc..eabf48c4d4b4 100644 --- a/arch/x86/entry/entry_64_compat.S +++ b/arch/x86/entry/entry_64_compat.S @@ -270,6 +270,7 @@ SYM_INNER_LABEL(entry_SYSRETL_compat_unsafe_stack, SYM_L_GLOBAL) xorl %r9d, %r9d xorl %r10d, %r10d swapgs + CLEAR_CPU_BUFFERS sysretl SYM_INNER_LABEL(entry_SYSRETL_compat_end, SYM_L_GLOBAL) ANNOTATE_NOENDBR diff --git a/arch/x86/entry/entry_64_fred.S b/arch/x86/entry/entry_64_fred.S new file mode 100644 index 000000000000..a02bc6f3d2e6 --- /dev/null +++ b/arch/x86/entry/entry_64_fred.S @@ -0,0 +1,131 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * The actual FRED entry points. + */ + +#include <linux/export.h> + +#include <asm/asm.h> +#include <asm/fred.h> +#include <asm/segment.h> + +#include "calling.h" + + .code64 + .section .noinstr.text, "ax" + +.macro FRED_ENTER + UNWIND_HINT_END_OF_STACK + ENDBR + PUSH_AND_CLEAR_REGS + movq %rsp, %rdi /* %rdi -> pt_regs */ +.endm + +.macro FRED_EXIT + UNWIND_HINT_REGS + POP_REGS +.endm + +/* + * The new RIP value that FRED event delivery establishes is + * IA32_FRED_CONFIG & ~FFFH for events that occur in ring 3. + * Thus the FRED ring 3 entry point must be 4K page aligned. + */ + .align 4096 + +SYM_CODE_START_NOALIGN(asm_fred_entrypoint_user) + FRED_ENTER + call fred_entry_from_user +SYM_INNER_LABEL(asm_fred_exit_user, SYM_L_GLOBAL) + FRED_EXIT +1: ERETU + + _ASM_EXTABLE_TYPE(1b, asm_fred_entrypoint_user, EX_TYPE_ERETU) +SYM_CODE_END(asm_fred_entrypoint_user) + +/* + * The new RIP value that FRED event delivery establishes is + * (IA32_FRED_CONFIG & ~FFFH) + 256 for events that occur in + * ring 0, i.e., asm_fred_entrypoint_user + 256. + */ + .org asm_fred_entrypoint_user + 256, 0xcc +SYM_CODE_START_NOALIGN(asm_fred_entrypoint_kernel) + FRED_ENTER + call fred_entry_from_kernel + FRED_EXIT + ERETS +SYM_CODE_END(asm_fred_entrypoint_kernel) + +#if IS_ENABLED(CONFIG_KVM_INTEL) +SYM_FUNC_START(asm_fred_entry_from_kvm) + push %rbp + mov %rsp, %rbp + + UNWIND_HINT_SAVE + + /* + * Both IRQ and NMI from VMX can be handled on current task stack + * because there is no need to protect from reentrancy and the call + * stack leading to this helper is effectively constant and shallow + * (relatively speaking). Do the same when FRED is active, i.e., no + * need to check current stack level for a stack switch. + * + * Emulate the FRED-defined redzone and stack alignment. + */ + sub $(FRED_CONFIG_REDZONE_AMOUNT << 6), %rsp + and $FRED_STACK_FRAME_RSP_MASK, %rsp + + /* + * Start to push a FRED stack frame, which is always 64 bytes: + * + * +--------+-----------------+ + * | Bytes | Usage | + * +--------+-----------------+ + * | 63:56 | Reserved | + * | 55:48 | Event Data | + * | 47:40 | SS + Event Info | + * | 39:32 | RSP | + * | 31:24 | RFLAGS | + * | 23:16 | CS + Aux Info | + * | 15:8 | RIP | + * | 7:0 | Error Code | + * +--------+-----------------+ + */ + push $0 /* Reserved, must be 0 */ + push $0 /* Event data, 0 for IRQ/NMI */ + push %rdi /* fred_ss handed in by the caller */ + push %rbp + pushf + mov $__KERNEL_CS, %rax + push %rax + + /* + * Unlike the IDT event delivery, FRED _always_ pushes an error code + * after pushing the return RIP, thus the CALL instruction CANNOT be + * used here to push the return RIP, otherwise there is no chance to + * push an error code before invoking the IRQ/NMI handler. + * + * Use LEA to get the return RIP and push it, then push an error code. + */ + lea 1f(%rip), %rax + push %rax /* Return RIP */ + push $0 /* Error code, 0 for IRQ/NMI */ + + PUSH_AND_CLEAR_REGS clear_bp=0 unwind_hint=0 + movq %rsp, %rdi /* %rdi -> pt_regs */ + call __fred_entry_from_kvm /* Call the C entry point */ + POP_REGS + ERETS +1: + /* + * Objtool doesn't understand what ERETS does, this hint tells it that + * yes, we'll reach here and with what stack state. A save/restore pair + * isn't strictly needed, but it's the simplest form. + */ + UNWIND_HINT_RESTORE + pop %rbp + RET + +SYM_FUNC_END(asm_fred_entry_from_kvm) +EXPORT_SYMBOL_GPL(asm_fred_entry_from_kvm); +#endif diff --git a/arch/x86/entry/entry_fred.c b/arch/x86/entry/entry_fred.c new file mode 100644 index 000000000000..ac120cbdaaf2 --- /dev/null +++ b/arch/x86/entry/entry_fred.c @@ -0,0 +1,294 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * The FRED specific kernel/user entry functions which are invoked from + * assembly code and dispatch to the associated handlers. + */ +#include <linux/kernel.h> +#include <linux/kdebug.h> +#include <linux/nospec.h> + +#include <asm/desc.h> +#include <asm/fred.h> +#include <asm/idtentry.h> +#include <asm/syscall.h> +#include <asm/trapnr.h> +#include <asm/traps.h> + +/* FRED EVENT_TYPE_OTHER vector numbers */ +#define FRED_SYSCALL 1 +#define FRED_SYSENTER 2 + +static noinstr void fred_bad_type(struct pt_regs *regs, unsigned long error_code) +{ + irqentry_state_t irq_state = irqentry_nmi_enter(regs); + + instrumentation_begin(); + + /* Panic on events from a high stack level */ + if (regs->fred_cs.sl > 0) { + pr_emerg("PANIC: invalid or fatal FRED event; event type %u " + "vector %u error 0x%lx aux 0x%lx at %04x:%016lx\n", + regs->fred_ss.type, regs->fred_ss.vector, regs->orig_ax, + fred_event_data(regs), regs->cs, regs->ip); + die("invalid or fatal FRED event", regs, regs->orig_ax); + panic("invalid or fatal FRED event"); + } else { + unsigned long flags = oops_begin(); + int sig = SIGKILL; + + pr_alert("BUG: invalid or fatal FRED event; event type %u " + "vector %u error 0x%lx aux 0x%lx at %04x:%016lx\n", + regs->fred_ss.type, regs->fred_ss.vector, regs->orig_ax, + fred_event_data(regs), regs->cs, regs->ip); + + if (__die("Invalid or fatal FRED event", regs, regs->orig_ax)) + sig = 0; + + oops_end(flags, regs, sig); + } + + instrumentation_end(); + irqentry_nmi_exit(regs, irq_state); +} + +static noinstr void fred_intx(struct pt_regs *regs) +{ + switch (regs->fred_ss.vector) { + /* Opcode 0xcd, 0x3, NOT INT3 (opcode 0xcc) */ + case X86_TRAP_BP: + return exc_int3(regs); + + /* Opcode 0xcd, 0x4, NOT INTO (opcode 0xce) */ + case X86_TRAP_OF: + return exc_overflow(regs); + +#ifdef CONFIG_IA32_EMULATION + /* INT80 */ + case IA32_SYSCALL_VECTOR: + if (ia32_enabled()) + return int80_emulation(regs); + fallthrough; +#endif + + default: + return exc_general_protection(regs, 0); + } +} + +static __always_inline void fred_other(struct pt_regs *regs) +{ + /* The compiler can fold these conditions into a single test */ + if (likely(regs->fred_ss.vector == FRED_SYSCALL && regs->fred_ss.lm)) { + regs->orig_ax = regs->ax; + regs->ax = -ENOSYS; + do_syscall_64(regs, regs->orig_ax); + return; + } else if (ia32_enabled() && + likely(regs->fred_ss.vector == FRED_SYSENTER && !regs->fred_ss.lm)) { + regs->orig_ax = regs->ax; + regs->ax = -ENOSYS; + do_fast_syscall_32(regs); + return; + } else { + exc_invalid_op(regs); + return; + } +} + +#define SYSVEC(_vector, _function) [_vector - FIRST_SYSTEM_VECTOR] = fred_sysvec_##_function + +static idtentry_t sysvec_table[NR_SYSTEM_VECTORS] __ro_after_init = { + SYSVEC(ERROR_APIC_VECTOR, error_interrupt), + SYSVEC(SPURIOUS_APIC_VECTOR, spurious_apic_interrupt), + SYSVEC(LOCAL_TIMER_VECTOR, apic_timer_interrupt), + SYSVEC(X86_PLATFORM_IPI_VECTOR, x86_platform_ipi), + + SYSVEC(RESCHEDULE_VECTOR, reschedule_ipi), + SYSVEC(CALL_FUNCTION_SINGLE_VECTOR, call_function_single), + SYSVEC(CALL_FUNCTION_VECTOR, call_function), + SYSVEC(REBOOT_VECTOR, reboot), + + SYSVEC(THRESHOLD_APIC_VECTOR, threshold), + SYSVEC(DEFERRED_ERROR_VECTOR, deferred_error), + SYSVEC(THERMAL_APIC_VECTOR, thermal), + + SYSVEC(IRQ_WORK_VECTOR, irq_work), + + SYSVEC(POSTED_INTR_VECTOR, kvm_posted_intr_ipi), + SYSVEC(POSTED_INTR_WAKEUP_VECTOR, kvm_posted_intr_wakeup_ipi), + SYSVEC(POSTED_INTR_NESTED_VECTOR, kvm_posted_intr_nested_ipi), +}; + +static bool fred_setup_done __initdata; + +void __init fred_install_sysvec(unsigned int sysvec, idtentry_t handler) +{ + if (WARN_ON_ONCE(sysvec < FIRST_SYSTEM_VECTOR)) + return; + + if (WARN_ON_ONCE(fred_setup_done)) + return; + + if (!WARN_ON_ONCE(sysvec_table[sysvec - FIRST_SYSTEM_VECTOR])) + sysvec_table[sysvec - FIRST_SYSTEM_VECTOR] = handler; +} + +static noinstr void fred_handle_spurious_interrupt(struct pt_regs *regs) +{ + spurious_interrupt(regs, regs->fred_ss.vector); +} + +void __init fred_complete_exception_setup(void) +{ + unsigned int vector; + + for (vector = 0; vector < FIRST_EXTERNAL_VECTOR; vector++) + set_bit(vector, system_vectors); + + for (vector = 0; vector < NR_SYSTEM_VECTORS; vector++) { + if (sysvec_table[vector]) + set_bit(vector + FIRST_SYSTEM_VECTOR, system_vectors); + else + sysvec_table[vector] = fred_handle_spurious_interrupt; + } + fred_setup_done = true; +} + +static noinstr void fred_extint(struct pt_regs *regs) +{ + unsigned int vector = regs->fred_ss.vector; + unsigned int index = array_index_nospec(vector - FIRST_SYSTEM_VECTOR, + NR_SYSTEM_VECTORS); + + if (WARN_ON_ONCE(vector < FIRST_EXTERNAL_VECTOR)) + return; + + if (likely(vector >= FIRST_SYSTEM_VECTOR)) { + irqentry_state_t state = irqentry_enter(regs); + + instrumentation_begin(); + sysvec_table[index](regs); + instrumentation_end(); + irqentry_exit(regs, state); + } else { + common_interrupt(regs, vector); + } +} + +static noinstr void fred_hwexc(struct pt_regs *regs, unsigned long error_code) +{ + /* Optimize for #PF. That's the only exception which matters performance wise */ + if (likely(regs->fred_ss.vector == X86_TRAP_PF)) + return exc_page_fault(regs, error_code); + + switch (regs->fred_ss.vector) { + case X86_TRAP_DE: return exc_divide_error(regs); + case X86_TRAP_DB: return fred_exc_debug(regs); + case X86_TRAP_BR: return exc_bounds(regs); + case X86_TRAP_UD: return exc_invalid_op(regs); + case X86_TRAP_NM: return exc_device_not_available(regs); + case X86_TRAP_DF: return exc_double_fault(regs, error_code); + case X86_TRAP_TS: return exc_invalid_tss(regs, error_code); + case X86_TRAP_NP: return exc_segment_not_present(regs, error_code); + case X86_TRAP_SS: return exc_stack_segment(regs, error_code); + case X86_TRAP_GP: return exc_general_protection(regs, error_code); + case X86_TRAP_MF: return exc_coprocessor_error(regs); + case X86_TRAP_AC: return exc_alignment_check(regs, error_code); + case X86_TRAP_XF: return exc_simd_coprocessor_error(regs); + +#ifdef CONFIG_X86_MCE + case X86_TRAP_MC: return fred_exc_machine_check(regs); +#endif +#ifdef CONFIG_INTEL_TDX_GUEST + case X86_TRAP_VE: return exc_virtualization_exception(regs); +#endif +#ifdef CONFIG_X86_CET + case X86_TRAP_CP: return exc_control_protection(regs, error_code); +#endif + default: return fred_bad_type(regs, error_code); + } + +} + +static noinstr void fred_swexc(struct pt_regs *regs, unsigned long error_code) +{ + switch (regs->fred_ss.vector) { + case X86_TRAP_BP: return exc_int3(regs); + case X86_TRAP_OF: return exc_overflow(regs); + default: return fred_bad_type(regs, error_code); + } +} + +__visible noinstr void fred_entry_from_user(struct pt_regs *regs) +{ + unsigned long error_code = regs->orig_ax; + + /* Invalidate orig_ax so that syscall_get_nr() works correctly */ + regs->orig_ax = -1; + + switch (regs->fred_ss.type) { + case EVENT_TYPE_EXTINT: + return fred_extint(regs); + case EVENT_TYPE_NMI: + if (likely(regs->fred_ss.vector == X86_TRAP_NMI)) + return fred_exc_nmi(regs); + break; + case EVENT_TYPE_HWEXC: + return fred_hwexc(regs, error_code); + case EVENT_TYPE_SWINT: + return fred_intx(regs); + case EVENT_TYPE_PRIV_SWEXC: + if (likely(regs->fred_ss.vector == X86_TRAP_DB)) + return fred_exc_debug(regs); + break; + case EVENT_TYPE_SWEXC: + return fred_swexc(regs, error_code); + case EVENT_TYPE_OTHER: + return fred_other(regs); + default: break; + } + + return fred_bad_type(regs, error_code); +} + +__visible noinstr void fred_entry_from_kernel(struct pt_regs *regs) +{ + unsigned long error_code = regs->orig_ax; + + /* Invalidate orig_ax so that syscall_get_nr() works correctly */ + regs->orig_ax = -1; + + switch (regs->fred_ss.type) { + case EVENT_TYPE_EXTINT: + return fred_extint(regs); + case EVENT_TYPE_NMI: + if (likely(regs->fred_ss.vector == X86_TRAP_NMI)) + return fred_exc_nmi(regs); + break; + case EVENT_TYPE_HWEXC: + return fred_hwexc(regs, error_code); + case EVENT_TYPE_PRIV_SWEXC: + if (likely(regs->fred_ss.vector == X86_TRAP_DB)) + return fred_exc_debug(regs); + break; + case EVENT_TYPE_SWEXC: + return fred_swexc(regs, error_code); + default: break; + } + + return fred_bad_type(regs, error_code); +} + +#if IS_ENABLED(CONFIG_KVM_INTEL) +__visible noinstr void __fred_entry_from_kvm(struct pt_regs *regs) +{ + switch (regs->fred_ss.type) { + case EVENT_TYPE_EXTINT: + return fred_extint(regs); + case EVENT_TYPE_NMI: + return fred_exc_nmi(regs); + default: + WARN_ON_ONCE(1); + } +} +#endif diff --git a/arch/x86/entry/thunk_32.S b/arch/x86/entry/thunk_32.S index 0103e103a657..da37f42f4549 100644 --- a/arch/x86/entry/thunk_32.S +++ b/arch/x86/entry/thunk_32.S @@ -4,33 +4,15 @@ * Copyright 2008 by Steven Rostedt, Red Hat, Inc * (inspired by Andi Kleen's thunk_64.S) */ - #include <linux/export.h> - #include <linux/linkage.h> - #include <asm/asm.h> - /* put return address in eax (arg1) */ - .macro THUNK name, func, put_ret_addr_in_eax=0 -SYM_CODE_START_NOALIGN(\name) - pushl %eax - pushl %ecx - pushl %edx +#include <linux/export.h> +#include <linux/linkage.h> +#include <asm/asm.h> - .if \put_ret_addr_in_eax - /* Place EIP in the arg1 */ - movl 3*4(%esp), %eax - .endif +#include "calling.h" - call \func - popl %edx - popl %ecx - popl %eax - RET - _ASM_NOKPROBE(\name) -SYM_CODE_END(\name) - .endm - - THUNK preempt_schedule_thunk, preempt_schedule - THUNK preempt_schedule_notrace_thunk, preempt_schedule_notrace - EXPORT_SYMBOL(preempt_schedule_thunk) - EXPORT_SYMBOL(preempt_schedule_notrace_thunk) +THUNK preempt_schedule_thunk, preempt_schedule +THUNK preempt_schedule_notrace_thunk, preempt_schedule_notrace +EXPORT_SYMBOL(preempt_schedule_thunk) +EXPORT_SYMBOL(preempt_schedule_notrace_thunk) diff --git a/arch/x86/entry/thunk_64.S b/arch/x86/entry/thunk_64.S index 416b400f39db..119ebdc3d362 100644 --- a/arch/x86/entry/thunk_64.S +++ b/arch/x86/entry/thunk_64.S @@ -9,39 +9,6 @@ #include "calling.h" #include <asm/asm.h> - /* rdi: arg1 ... normal C conventions. rax is saved/restored. */ - .macro THUNK name, func -SYM_FUNC_START(\name) - pushq %rbp - movq %rsp, %rbp - - pushq %rdi - pushq %rsi - pushq %rdx - pushq %rcx - pushq %rax - pushq %r8 - pushq %r9 - pushq %r10 - pushq %r11 - - call \func - - popq %r11 - popq %r10 - popq %r9 - popq %r8 - popq %rax - popq %rcx - popq %rdx - popq %rsi - popq %rdi - popq %rbp - RET -SYM_FUNC_END(\name) - _ASM_NOKPROBE(\name) - .endm - THUNK preempt_schedule_thunk, preempt_schedule THUNK preempt_schedule_notrace_thunk, preempt_schedule_notrace EXPORT_SYMBOL(preempt_schedule_thunk) diff --git a/arch/x86/entry/vdso/Makefile b/arch/x86/entry/vdso/Makefile index b1b8dd1608f7..620f6257bbe9 100644 --- a/arch/x86/entry/vdso/Makefile +++ b/arch/x86/entry/vdso/Makefile @@ -3,7 +3,7 @@ # Building vDSO images for x86. # -# Include the generic Makefile to check the built vdso. +# Include the generic Makefile to check the built vDSO: include $(srctree)/lib/vdso/Makefile # Sanitizer runtimes are unavailable and cannot be linked here. @@ -18,48 +18,39 @@ OBJECT_FILES_NON_STANDARD := y # Prevents link failures: __sanitizer_cov_trace_pc() is not linked in. KCOV_INSTRUMENT := n -VDSO64-$(CONFIG_X86_64) := y -VDSOX32-$(CONFIG_X86_X32_ABI) := y -VDSO32-$(CONFIG_X86_32) := y -VDSO32-$(CONFIG_IA32_EMULATION) := y - -# files to link into the vdso +# Files to link into the vDSO: vobjs-y := vdso-note.o vclock_gettime.o vgetcpu.o vobjs32-y := vdso32/note.o vdso32/system_call.o vdso32/sigreturn.o vobjs32-y += vdso32/vclock_gettime.o vdso32/vgetcpu.o vobjs-$(CONFIG_X86_SGX) += vsgx.o -# files to link into kernel -obj-y += vma.o extable.o -KASAN_SANITIZE_vma.o := y -UBSAN_SANITIZE_vma.o := y -KCSAN_SANITIZE_vma.o := y -OBJECT_FILES_NON_STANDARD_vma.o := n -OBJECT_FILES_NON_STANDARD_extable.o := n +# Files to link into the kernel: +obj-y += vma.o extable.o +KASAN_SANITIZE_vma.o := y +UBSAN_SANITIZE_vma.o := y +KCSAN_SANITIZE_vma.o := y + +OBJECT_FILES_NON_STANDARD_vma.o := n +OBJECT_FILES_NON_STANDARD_extable.o := n -# vDSO images to build -vdso_img-$(VDSO64-y) += 64 -vdso_img-$(VDSOX32-y) += x32 -vdso_img-$(VDSO32-y) += 32 +# vDSO images to build: +obj-$(CONFIG_X86_64) += vdso-image-64.o +obj-$(CONFIG_X86_X32_ABI) += vdso-image-x32.o +obj-$(CONFIG_COMPAT_32) += vdso-image-32.o vdso32-setup.o -obj-$(VDSO32-y) += vdso32-setup.o -OBJECT_FILES_NON_STANDARD_vdso32-setup.o := n +OBJECT_FILES_NON_STANDARD_vdso-image-32.o := n +OBJECT_FILES_NON_STANDARD_vdso-image-64.o := n +OBJECT_FILES_NON_STANDARD_vdso32-setup.o := n -vobjs := $(foreach F,$(vobjs-y),$(obj)/$F) -vobjs32 := $(foreach F,$(vobjs32-y),$(obj)/$F) +vobjs := $(addprefix $(obj)/, $(vobjs-y)) +vobjs32 := $(addprefix $(obj)/, $(vobjs32-y)) $(obj)/vdso.o: $(obj)/vdso.so targets += vdso.lds $(vobjs-y) targets += vdso32/vdso32.lds $(vobjs32-y) -# Build the vDSO image C files and link them in. -vdso_img_objs := $(vdso_img-y:%=vdso-image-%.o) -vdso_img_cfiles := $(vdso_img-y:%=vdso-image-%.c) -vdso_img_sodbg := $(vdso_img-y:%=vdso%.so.dbg) -obj-y += $(vdso_img_objs) -targets += $(vdso_img_cfiles) -targets += $(vdso_img_sodbg) $(vdso_img-y:%=vdso%.so) +targets += $(foreach x, 64 x32 32, vdso-image-$(x).c vdso$(x).so vdso$(x).so.dbg) CPPFLAGS_vdso.lds += -P -C @@ -87,7 +78,7 @@ CFL := $(PROFILING) -mcmodel=small -fPIC -O2 -fasynchronous-unwind-tables -m64 \ -fno-omit-frame-pointer -foptimize-sibling-calls \ -DDISABLE_BRANCH_PROFILING -DBUILD_VDSO -ifdef CONFIG_RETPOLINE +ifdef CONFIG_MITIGATION_RETPOLINE ifneq ($(RETPOLINE_VDSO_CFLAGS),) CFL += $(RETPOLINE_VDSO_CFLAGS) endif @@ -123,7 +114,7 @@ VDSO_LDFLAGS_vdsox32.lds = -m elf32_x86_64 -soname linux-vdso.so.1 \ vobjx32s-y := $(vobjs-y:.o=-x32.o) # same thing, but in the output directory -vobjx32s := $(foreach F,$(vobjx32s-y),$(obj)/$F) +vobjx32s := $(addprefix $(obj)/, $(vobjx32s-y)) # Convert 64bit object file to x32 for x32 vDSO. quiet_cmd_x32 = X32 $@ @@ -164,7 +155,7 @@ KBUILD_CFLAGS_32 += $(call cc-option, -foptimize-sibling-calls) KBUILD_CFLAGS_32 += -fno-omit-frame-pointer KBUILD_CFLAGS_32 += -DDISABLE_BRANCH_PROFILING -ifdef CONFIG_RETPOLINE +ifdef CONFIG_MITIGATION_RETPOLINE ifneq ($(RETPOLINE_VDSO_CFLAGS),) KBUILD_CFLAGS_32 += $(RETPOLINE_VDSO_CFLAGS) endif @@ -190,5 +181,3 @@ GCOV_PROFILE := n quiet_cmd_vdso_and_check = VDSO $@ cmd_vdso_and_check = $(cmd_vdso); $(cmd_vdso_check) - -clean-files := vdso32.so vdso32.so.dbg vdso64* vdso-image-*.c vdsox32.so* diff --git a/arch/x86/entry/vdso/vma.c b/arch/x86/entry/vdso/vma.c index 7645730dc228..6d83ceb7f1ba 100644 --- a/arch/x86/entry/vdso/vma.c +++ b/arch/x86/entry/vdso/vma.c @@ -274,59 +274,6 @@ up_fail: return ret; } -#ifdef CONFIG_X86_64 -/* - * Put the vdso above the (randomized) stack with another randomized - * offset. This way there is no hole in the middle of address space. - * To save memory make sure it is still in the same PTE as the stack - * top. This doesn't give that many random bits. - * - * Note that this algorithm is imperfect: the distribution of the vdso - * start address within a PMD is biased toward the end. - * - * Only used for the 64-bit and x32 vdsos. - */ -static unsigned long vdso_addr(unsigned long start, unsigned len) -{ - unsigned long addr, end; - unsigned offset; - - /* - * Round up the start address. It can start out unaligned as a result - * of stack start randomization. - */ - start = PAGE_ALIGN(start); - - /* Round the lowest possible end address up to a PMD boundary. */ - end = (start + len + PMD_SIZE - 1) & PMD_MASK; - if (end >= DEFAULT_MAP_WINDOW) - end = DEFAULT_MAP_WINDOW; - end -= len; - - if (end > start) { - offset = get_random_u32_below(((end - start) >> PAGE_SHIFT) + 1); - addr = start + (offset << PAGE_SHIFT); - } else { - addr = start; - } - - /* - * Forcibly align the final address in case we have a hardware - * issue that requires alignment for performance reasons. - */ - addr = align_vdso_addr(addr); - - return addr; -} - -static int map_vdso_randomized(const struct vdso_image *image) -{ - unsigned long addr = vdso_addr(current->mm->start_stack, image->size-image->sym_vvar_start); - - return map_vdso(image, addr); -} -#endif - int map_vdso_once(const struct vdso_image *image, unsigned long addr) { struct mm_struct *mm = current->mm; @@ -369,7 +316,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) if (!vdso64_enabled) return 0; - return map_vdso_randomized(&vdso_image_64); + return map_vdso(&vdso_image_64, 0); } #ifdef CONFIG_COMPAT @@ -380,7 +327,7 @@ int compat_arch_setup_additional_pages(struct linux_binprm *bprm, if (x32) { if (!vdso64_enabled) return 0; - return map_vdso_randomized(&vdso_image_x32); + return map_vdso(&vdso_image_x32, 0); } #endif #ifdef CONFIG_IA32_EMULATION diff --git a/arch/x86/entry/vsyscall/vsyscall_64.c b/arch/x86/entry/vsyscall/vsyscall_64.c index e0ca8120aea8..a3c0df11d0e6 100644 --- a/arch/x86/entry/vsyscall/vsyscall_64.c +++ b/arch/x86/entry/vsyscall/vsyscall_64.c @@ -76,7 +76,7 @@ static void warn_bad_vsyscall(const char *level, struct pt_regs *regs, if (!show_unhandled_signals) return; - printk_ratelimited("%s%s[%d] %s ip:%lx cs:%lx sp:%lx ax:%lx si:%lx di:%lx\n", + printk_ratelimited("%s%s[%d] %s ip:%lx cs:%x sp:%lx ax:%lx si:%lx di:%lx\n", level, current->comm, task_pid_nr(current), message, regs->ip, regs->cs, regs->sp, regs->ax, regs->si, regs->di); diff --git a/arch/x86/events/amd/core.c b/arch/x86/events/amd/core.c index 81f6d8275b6b..69a3b02e50bb 100644 --- a/arch/x86/events/amd/core.c +++ b/arch/x86/events/amd/core.c @@ -579,7 +579,7 @@ static void amd_pmu_cpu_starting(int cpu) if (!x86_pmu.amd_nb_constraints) return; - nb_id = topology_die_id(cpu); + nb_id = topology_amd_node_id(cpu); WARN_ON_ONCE(nb_id == BAD_APICID); for_each_online_cpu(i) { diff --git a/arch/x86/events/amd/uncore.c b/arch/x86/events/amd/uncore.c index 5bf03c575812..4ccb8fa483e6 100644 --- a/arch/x86/events/amd/uncore.c +++ b/arch/x86/events/amd/uncore.c @@ -71,7 +71,7 @@ union amd_uncore_info { }; struct amd_uncore { - union amd_uncore_info * __percpu info; + union amd_uncore_info __percpu *info; struct amd_uncore_pmu *pmus; unsigned int num_pmus; bool init_done; diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c index 3804f21ab049..768d1414897f 100644 --- a/arch/x86/events/intel/core.c +++ b/arch/x86/events/intel/core.c @@ -17,6 +17,7 @@ #include <linux/kvm_host.h> #include <asm/cpufeature.h> +#include <asm/debugreg.h> #include <asm/hardirq.h> #include <asm/intel-family.h> #include <asm/intel_pt.h> diff --git a/arch/x86/events/intel/cstate.c b/arch/x86/events/intel/cstate.c index 4b50a3a9818a..326c8cd5aa2d 100644 --- a/arch/x86/events/intel/cstate.c +++ b/arch/x86/events/intel/cstate.c @@ -834,7 +834,7 @@ static int __init cstate_init(void) } if (has_cstate_pkg) { - if (topology_max_die_per_package() > 1) { + if (topology_max_dies_per_package() > 1) { err = perf_pmu_register(&cstate_pkg_pmu, "cstate_die", -1); } else { diff --git a/arch/x86/events/intel/ds.c b/arch/x86/events/intel/ds.c index d49d661ec0a7..2641ba620f12 100644 --- a/arch/x86/events/intel/ds.c +++ b/arch/x86/events/intel/ds.c @@ -5,6 +5,7 @@ #include <linux/sched/clock.h> #include <asm/cpu_entry_area.h> +#include <asm/debugreg.h> #include <asm/perf_event.h> #include <asm/tlbflush.h> #include <asm/insn.h> diff --git a/arch/x86/events/intel/uncore.c b/arch/x86/events/intel/uncore.c index 7927c0b832fa..258e2cdf28fa 100644 --- a/arch/x86/events/intel/uncore.c +++ b/arch/x86/events/intel/uncore.c @@ -1893,7 +1893,7 @@ static int __init intel_uncore_init(void) return -ENODEV; __uncore_max_dies = - topology_max_packages() * topology_max_die_per_package(); + topology_max_packages() * topology_max_dies_per_package(); id = x86_match_cpu(intel_uncore_match); if (!id) { diff --git a/arch/x86/events/intel/uncore_nhmex.c b/arch/x86/events/intel/uncore_nhmex.c index 56eea2c66cfb..92da8aaa5966 100644 --- a/arch/x86/events/intel/uncore_nhmex.c +++ b/arch/x86/events/intel/uncore_nhmex.c @@ -1221,8 +1221,8 @@ void nhmex_uncore_cpu_init(void) uncore_nhmex = true; else nhmex_uncore_mbox.event_descs = wsmex_uncore_mbox_events; - if (nhmex_uncore_cbox.num_boxes > boot_cpu_data.x86_max_cores) - nhmex_uncore_cbox.num_boxes = boot_cpu_data.x86_max_cores; + if (nhmex_uncore_cbox.num_boxes > topology_num_cores_per_package()) + nhmex_uncore_cbox.num_boxes = topology_num_cores_per_package(); uncore_msr_uncores = nhmex_msr_uncores; } /* end of Nehalem-EX uncore support */ diff --git a/arch/x86/events/intel/uncore_snb.c b/arch/x86/events/intel/uncore_snb.c index 7fd4334e12a1..9462fd9f3b7a 100644 --- a/arch/x86/events/intel/uncore_snb.c +++ b/arch/x86/events/intel/uncore_snb.c @@ -364,8 +364,8 @@ static struct intel_uncore_type *snb_msr_uncores[] = { void snb_uncore_cpu_init(void) { uncore_msr_uncores = snb_msr_uncores; - if (snb_uncore_cbox.num_boxes > boot_cpu_data.x86_max_cores) - snb_uncore_cbox.num_boxes = boot_cpu_data.x86_max_cores; + if (snb_uncore_cbox.num_boxes > topology_num_cores_per_package()) + snb_uncore_cbox.num_boxes = topology_num_cores_per_package(); } static void skl_uncore_msr_init_box(struct intel_uncore_box *box) @@ -428,8 +428,8 @@ static struct intel_uncore_type *skl_msr_uncores[] = { void skl_uncore_cpu_init(void) { uncore_msr_uncores = skl_msr_uncores; - if (skl_uncore_cbox.num_boxes > boot_cpu_data.x86_max_cores) - skl_uncore_cbox.num_boxes = boot_cpu_data.x86_max_cores; + if (skl_uncore_cbox.num_boxes > topology_num_cores_per_package()) + skl_uncore_cbox.num_boxes = topology_num_cores_per_package(); snb_uncore_arb.ops = &skl_uncore_msr_ops; } diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/intel/uncore_snbep.c index a96496bef678..2eaf0f339849 100644 --- a/arch/x86/events/intel/uncore_snbep.c +++ b/arch/x86/events/intel/uncore_snbep.c @@ -1172,8 +1172,8 @@ static struct intel_uncore_type *snbep_msr_uncores[] = { void snbep_uncore_cpu_init(void) { - if (snbep_uncore_cbox.num_boxes > boot_cpu_data.x86_max_cores) - snbep_uncore_cbox.num_boxes = boot_cpu_data.x86_max_cores; + if (snbep_uncore_cbox.num_boxes > topology_num_cores_per_package()) + snbep_uncore_cbox.num_boxes = topology_num_cores_per_package(); uncore_msr_uncores = snbep_msr_uncores; } @@ -1406,7 +1406,7 @@ static int topology_gidnid_map(int nodeid, u32 gidnid) */ for (i = 0; i < 8; i++) { if (nodeid == GIDNIDMAP(gidnid, i)) { - if (topology_max_die_per_package() > 1) + if (topology_max_dies_per_package() > 1) die_id = i; else die_id = topology_phys_to_logical_pkg(i); @@ -1845,8 +1845,8 @@ static struct intel_uncore_type *ivbep_msr_uncores[] = { void ivbep_uncore_cpu_init(void) { - if (ivbep_uncore_cbox.num_boxes > boot_cpu_data.x86_max_cores) - ivbep_uncore_cbox.num_boxes = boot_cpu_data.x86_max_cores; + if (ivbep_uncore_cbox.num_boxes > topology_num_cores_per_package()) + ivbep_uncore_cbox.num_boxes = topology_num_cores_per_package(); uncore_msr_uncores = ivbep_msr_uncores; } @@ -2917,8 +2917,8 @@ static bool hswep_has_limit_sbox(unsigned int device) void hswep_uncore_cpu_init(void) { - if (hswep_uncore_cbox.num_boxes > boot_cpu_data.x86_max_cores) - hswep_uncore_cbox.num_boxes = boot_cpu_data.x86_max_cores; + if (hswep_uncore_cbox.num_boxes > topology_num_cores_per_package()) + hswep_uncore_cbox.num_boxes = topology_num_cores_per_package(); /* Detect 6-8 core systems with only two SBOXes */ if (hswep_has_limit_sbox(HSWEP_PCU_DID)) @@ -3280,8 +3280,8 @@ static struct event_constraint bdx_uncore_pcu_constraints[] = { void bdx_uncore_cpu_init(void) { - if (bdx_uncore_cbox.num_boxes > boot_cpu_data.x86_max_cores) - bdx_uncore_cbox.num_boxes = boot_cpu_data.x86_max_cores; + if (bdx_uncore_cbox.num_boxes > topology_num_cores_per_package()) + bdx_uncore_cbox.num_boxes = topology_num_cores_per_package(); uncore_msr_uncores = bdx_msr_uncores; /* Detect systems with no SBOXes */ diff --git a/arch/x86/events/rapl.c b/arch/x86/events/rapl.c index 8d98d468b976..fb2b1961e5a3 100644 --- a/arch/x86/events/rapl.c +++ b/arch/x86/events/rapl.c @@ -674,7 +674,7 @@ static const struct attribute_group *rapl_attr_update[] = { static int __init init_rapl_pmus(void) { - int maxdie = topology_max_packages() * topology_max_die_per_package(); + int maxdie = topology_max_packages() * topology_max_dies_per_package(); size_t size; size = sizeof(*rapl_pmus) + maxdie * sizeof(struct rapl_pmu *); diff --git a/arch/x86/hyperv/hv_vtl.c b/arch/x86/hyperv/hv_vtl.c index 96e6c51515f5..edd2f35b2a5e 100644 --- a/arch/x86/hyperv/hv_vtl.c +++ b/arch/x86/hyperv/hv_vtl.c @@ -16,6 +16,11 @@ extern struct boot_params boot_params; static struct real_mode_header hv_vtl_real_mode_header; +static bool __init hv_vtl_msi_ext_dest_id(void) +{ + return true; +} + void __init hv_vtl_init_platform(void) { pr_info("Linux runs in Hyper-V Virtual Trust Level\n"); @@ -26,8 +31,9 @@ void __init hv_vtl_init_platform(void) x86_init.timers.timer_init = x86_init_noop; /* Avoid searching for BIOS MP tables */ - x86_init.mpparse.find_smp_config = x86_init_noop; - x86_init.mpparse.get_smp_config = x86_init_uint_noop; + x86_init.mpparse.find_mptable = x86_init_noop; + x86_init.mpparse.early_parse_smp_cfg = x86_init_noop; + x86_init.mpparse.parse_smp_cfg = x86_init_noop; x86_platform.get_wallclock = get_rtc_noop; x86_platform.set_wallclock = set_rtc_noop; @@ -38,6 +44,8 @@ void __init hv_vtl_init_platform(void) x86_platform.legacy.warm_reset = 0; x86_platform.legacy.reserve_bios_regions = 0; x86_platform.legacy.devices.pnpbios = 0; + + x86_init.hyper.msi_ext_dest_id = hv_vtl_msi_ext_dest_id; } static inline u64 hv_vtl_system_desc_base(struct ldttss_desc *desc) diff --git a/arch/x86/hyperv/ivm.c b/arch/x86/hyperv/ivm.c index 7dcbf153ad72..768d73de0d09 100644 --- a/arch/x86/hyperv/ivm.c +++ b/arch/x86/hyperv/ivm.c @@ -15,6 +15,7 @@ #include <asm/io.h> #include <asm/coco.h> #include <asm/mem_encrypt.h> +#include <asm/set_memory.h> #include <asm/mshyperv.h> #include <asm/hypervisor.h> #include <asm/mtrr.h> @@ -503,6 +504,31 @@ static int hv_mark_gpa_visibility(u16 count, const u64 pfn[], } /* + * When transitioning memory between encrypted and decrypted, the caller + * of set_memory_encrypted() or set_memory_decrypted() is responsible for + * ensuring that the memory isn't in use and isn't referenced while the + * transition is in progress. The transition has multiple steps, and the + * memory is in an inconsistent state until all steps are complete. A + * reference while the state is inconsistent could result in an exception + * that can't be cleanly fixed up. + * + * But the Linux kernel load_unaligned_zeropad() mechanism could cause a + * stray reference that can't be prevented by the caller, so Linux has + * specific code to handle this case. But when the #VC and #VE exceptions + * routed to a paravisor, the specific code doesn't work. To avoid this + * problem, mark the pages as "not present" while the transition is in + * progress. If load_unaligned_zeropad() causes a stray reference, a normal + * page fault is generated instead of #VC or #VE, and the page-fault-based + * handlers for load_unaligned_zeropad() resolve the reference. When the + * transition is complete, hv_vtom_set_host_visibility() marks the pages + * as "present" again. + */ +static bool hv_vtom_clear_present(unsigned long kbuffer, int pagecount, bool enc) +{ + return !set_memory_np(kbuffer, pagecount); +} + +/* * hv_vtom_set_host_visibility - Set specified memory visible to host. * * In Isolation VM, all guest memory is encrypted from host and guest @@ -515,16 +541,28 @@ static bool hv_vtom_set_host_visibility(unsigned long kbuffer, int pagecount, bo enum hv_mem_host_visibility visibility = enc ? VMBUS_PAGE_NOT_VISIBLE : VMBUS_PAGE_VISIBLE_READ_WRITE; u64 *pfn_array; + phys_addr_t paddr; + void *vaddr; int ret = 0; bool result = true; int i, pfn; pfn_array = kmalloc(HV_HYP_PAGE_SIZE, GFP_KERNEL); - if (!pfn_array) - return false; + if (!pfn_array) { + result = false; + goto err_set_memory_p; + } for (i = 0, pfn = 0; i < pagecount; i++) { - pfn_array[pfn] = virt_to_hvpfn((void *)kbuffer + i * HV_HYP_PAGE_SIZE); + /* + * Use slow_virt_to_phys() because the PRESENT bit has been + * temporarily cleared in the PTEs. slow_virt_to_phys() works + * without the PRESENT bit while virt_to_hvpfn() or similar + * does not. + */ + vaddr = (void *)kbuffer + (i * HV_HYP_PAGE_SIZE); + paddr = slow_virt_to_phys(vaddr); + pfn_array[pfn] = paddr >> HV_HYP_PAGE_SHIFT; pfn++; if (pfn == HV_MAX_MODIFY_GPA_REP_COUNT || i == pagecount - 1) { @@ -538,14 +576,30 @@ static bool hv_vtom_set_host_visibility(unsigned long kbuffer, int pagecount, bo } } - err_free_pfn_array: +err_free_pfn_array: kfree(pfn_array); + +err_set_memory_p: + /* + * Set the PTE PRESENT bits again to revert what hv_vtom_clear_present() + * did. Do this even if there is an error earlier in this function in + * order to avoid leaving the memory range in a "broken" state. Setting + * the PRESENT bits shouldn't fail, but return an error if it does. + */ + if (set_memory_p(kbuffer, pagecount)) + result = false; + return result; } static bool hv_vtom_tlb_flush_required(bool private) { - return true; + /* + * Since hv_vtom_clear_present() marks the PTEs as "not present" + * and flushes the TLB, they can't be in the TLB. That makes the + * flush controlled by this function redundant, so return "false". + */ + return false; } static bool hv_vtom_cache_flush_required(void) @@ -608,6 +662,7 @@ void __init hv_vtom_init(void) x86_platform.hyper.is_private_mmio = hv_is_private_mmio; x86_platform.guest.enc_cache_flush_required = hv_vtom_cache_flush_required; x86_platform.guest.enc_tlb_flush_required = hv_vtom_tlb_flush_required; + x86_platform.guest.enc_status_change_prepare = hv_vtom_clear_present; x86_platform.guest.enc_status_change_finish = hv_vtom_set_host_visibility; /* Set WB as the default cache mode. */ diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h index 9d159b771dc8..94ce0f7c9d3a 100644 --- a/arch/x86/include/asm/apic.h +++ b/arch/x86/include/asm/apic.h @@ -46,6 +46,10 @@ extern void x86_32_probe_apic(void); static inline void x86_32_probe_apic(void) { } #endif +extern u32 cpuid_to_apicid[]; + +#define CPU_ACPIID_INVALID U32_MAX + #ifdef CONFIG_X86_LOCAL_APIC extern int apic_verbosity; @@ -54,8 +58,6 @@ extern int local_apic_timer_c2_ok; extern bool apic_is_disabled; extern unsigned int lapic_timer_period; -extern u32 cpuid_to_apicid[]; - extern enum apic_intr_mode_id apic_intr_mode; enum apic_intr_mode_id { APIC_PIC, @@ -169,6 +171,14 @@ extern bool apic_needs_pit(void); extern void apic_send_IPI_allbutself(unsigned int vector); +extern void topology_register_apic(u32 apic_id, u32 acpi_id, bool present); +extern void topology_register_boot_apic(u32 apic_id); +extern int topology_hotplug_apic(u32 apic_id, u32 acpi_id); +extern void topology_hotunplug_apic(unsigned int cpu); +extern void topology_apply_cmdline_limits_early(void); +extern void topology_init_possible_cpus(void); +extern void topology_reset_possible_cpus_up(void); + #else /* !CONFIG_X86_LOCAL_APIC */ static inline void lapic_shutdown(void) { } #define local_apic_timer_c2_ok 1 @@ -183,6 +193,8 @@ static inline void apic_intr_mode_init(void) { } static inline void lapic_assign_system_vectors(void) { } static inline void lapic_assign_legacy_vector(unsigned int i, bool r) { } static inline bool apic_needs_pit(void) { return true; } +static inline void topology_apply_cmdline_limits_early(void) { } +static inline void topology_init_possible_cpus(void) { } #endif /* !CONFIG_X86_LOCAL_APIC */ #ifdef CONFIG_X86_X2APIC @@ -289,16 +301,11 @@ struct apic { /* Probe, setup and smpboot functions */ int (*probe)(void); int (*acpi_madt_oem_check)(char *oem_id, char *oem_table_id); - bool (*apic_id_registered)(void); - bool (*check_apicid_used)(physid_mask_t *map, u32 apicid); void (*init_apic_ldr)(void); - void (*ioapic_phys_id_map)(physid_mask_t *phys_map, physid_mask_t *retmap); u32 (*cpu_present_to_apicid)(int mps_cpu); - u32 (*phys_pkg_id)(u32 cpuid_apic, int index_msb); u32 (*get_apic_id)(u32 id); - u32 (*set_apic_id)(u32 apicid); /* wakeup_secondary_cpu */ int (*wakeup_secondary_cpu)(u32 apicid, unsigned long start_eip); @@ -527,7 +534,6 @@ extern int default_apic_id_valid(u32 apicid); extern u32 apic_default_calc_apicid(unsigned int cpu); extern u32 apic_flat_calc_apicid(unsigned int cpu); -extern void default_ioapic_phys_id_map(physid_mask_t *phys_map, physid_mask_t *retmap); extern u32 default_cpu_present_to_apicid(int mps_cpu); void apic_send_nmi_to_offline_cpu(unsigned int cpu); diff --git a/arch/x86/include/asm/asm-prototypes.h b/arch/x86/include/asm/asm-prototypes.h index b1a98fa38828..076bf8dee702 100644 --- a/arch/x86/include/asm/asm-prototypes.h +++ b/arch/x86/include/asm/asm-prototypes.h @@ -12,6 +12,7 @@ #include <asm/special_insns.h> #include <asm/preempt.h> #include <asm/asm.h> +#include <asm/fred.h> #include <asm/gsseg.h> #ifndef CONFIG_X86_CMPXCHG64 diff --git a/arch/x86/include/asm/asm.h b/arch/x86/include/asm/asm.h index fbcfec4dc4cc..ca8eed1d496a 100644 --- a/arch/x86/include/asm/asm.h +++ b/arch/x86/include/asm/asm.h @@ -113,6 +113,20 @@ #endif +#ifndef __ASSEMBLY__ +#ifndef __pic__ +static __always_inline __pure void *rip_rel_ptr(void *p) +{ + asm("leaq %c1(%%rip), %0" : "=r"(p) : "i"(p)); + + return p; +} +#define RIP_REL_REF(var) (*(typeof(&(var)))rip_rel_ptr(&(var))) +#else +#define RIP_REL_REF(var) (var) +#endif +#endif + /* * Macros to generate condition code outputs from inline assembly, * The output operand must be type "bool". diff --git a/arch/x86/include/asm/barrier.h b/arch/x86/include/asm/barrier.h index 0216f63a366b..fe1e7e3cc844 100644 --- a/arch/x86/include/asm/barrier.h +++ b/arch/x86/include/asm/barrier.h @@ -33,7 +33,7 @@ * Returns: * 0 - (index < size) */ -static inline unsigned long array_index_mask_nospec(unsigned long index, +static __always_inline unsigned long array_index_mask_nospec(unsigned long index, unsigned long size) { unsigned long mask; diff --git a/arch/x86/include/asm/coco.h b/arch/x86/include/asm/coco.h index 6ae2d16a7613..fb7388bbc212 100644 --- a/arch/x86/include/asm/coco.h +++ b/arch/x86/include/asm/coco.h @@ -2,6 +2,7 @@ #ifndef _ASM_X86_COCO_H #define _ASM_X86_COCO_H +#include <asm/asm.h> #include <asm/types.h> enum cc_vendor { @@ -10,13 +11,20 @@ enum cc_vendor { CC_VENDOR_INTEL, }; +#ifdef CONFIG_ARCH_HAS_CC_PLATFORM extern enum cc_vendor cc_vendor; +extern u64 cc_mask; + +static inline void cc_set_mask(u64 mask) +{ + RIP_REL_REF(cc_mask) = mask; +} -#ifdef CONFIG_ARCH_HAS_CC_PLATFORM -void cc_set_mask(u64 mask); u64 cc_mkenc(u64 val); u64 cc_mkdec(u64 val); #else +#define cc_vendor (CC_VENDOR_NONE) + static inline u64 cc_mkenc(u64 val) { return val; diff --git a/arch/x86/include/asm/cpu.h b/arch/x86/include/asm/cpu.h index f8f9a9b79395..aa30fd8cad7f 100644 --- a/arch/x86/include/asm/cpu.h +++ b/arch/x86/include/asm/cpu.h @@ -9,18 +9,10 @@ #include <linux/percpu.h> #include <asm/ibt.h> -#ifdef CONFIG_SMP - -extern void prefill_possible_map(void); - -#else /* CONFIG_SMP */ - -static inline void prefill_possible_map(void) {} - +#ifndef CONFIG_SMP #define cpu_physical_id(cpu) boot_cpu_physical_apicid #define cpu_acpi_id(cpu) 0 #define safe_smp_processor_id() 0 - #endif /* CONFIG_SMP */ #ifdef CONFIG_HOTPLUG_CPU diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index a26bebbdff87..a1273698fc43 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -168,7 +168,7 @@ extern void clear_cpu_cap(struct cpuinfo_x86 *c, unsigned int bit); */ static __always_inline bool _static_cpu_has(u16 bit) { - asm_volatile_goto( + asm goto( ALTERNATIVE_TERNARY("jmp 6f", %P[feature], "", "jmp %l[t_no]") ".pushsection .altinstr_aux,\"ax\"\n" "6:\n" diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h index 29cb275a219d..f0337f7bcf16 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h @@ -81,10 +81,8 @@ #define X86_FEATURE_K6_MTRR ( 3*32+ 1) /* AMD K6 nonstandard MTRRs */ #define X86_FEATURE_CYRIX_ARR ( 3*32+ 2) /* Cyrix ARRs (= MTRRs) */ #define X86_FEATURE_CENTAUR_MCR ( 3*32+ 3) /* Centaur MCRs (= MTRRs) */ - -/* CPU types for specific tunings: */ #define X86_FEATURE_K8 ( 3*32+ 4) /* "" Opteron, Athlon64 */ -/* FREE, was #define X86_FEATURE_K7 ( 3*32+ 5) "" Athlon */ +#define X86_FEATURE_ZEN5 ( 3*32+ 5) /* "" CPU based on Zen5 microarchitecture */ #define X86_FEATURE_P3 ( 3*32+ 6) /* "" P3 */ #define X86_FEATURE_P4 ( 3*32+ 7) /* "" P4 */ #define X86_FEATURE_CONSTANT_TSC ( 3*32+ 8) /* TSC ticks at a constant rate */ @@ -97,7 +95,7 @@ #define X86_FEATURE_SYSENTER32 ( 3*32+15) /* "" sysenter in IA32 userspace */ #define X86_FEATURE_REP_GOOD ( 3*32+16) /* REP microcode works well */ #define X86_FEATURE_AMD_LBR_V2 ( 3*32+17) /* AMD Last Branch Record Extension Version 2 */ -/* FREE, was #define X86_FEATURE_LFENCE_RDTSC ( 3*32+18) "" LFENCE synchronizes RDTSC */ +#define X86_FEATURE_CLEAR_CPU_BUF ( 3*32+18) /* "" Clear CPU buffers using VERW */ #define X86_FEATURE_ACC_POWER ( 3*32+19) /* AMD Accumulated Power Mechanism */ #define X86_FEATURE_NOPL ( 3*32+20) /* The NOPL (0F 1F) instructions */ #define X86_FEATURE_ALWAYS ( 3*32+21) /* "" Always-present feature */ @@ -326,7 +324,9 @@ #define X86_FEATURE_FZRM (12*32+10) /* "" Fast zero-length REP MOVSB */ #define X86_FEATURE_FSRS (12*32+11) /* "" Fast short REP STOSB */ #define X86_FEATURE_FSRC (12*32+12) /* "" Fast short REP {CMPSB,SCASB} */ +#define X86_FEATURE_FRED (12*32+17) /* Flexible Return and Event Delivery */ #define X86_FEATURE_LKGS (12*32+18) /* "" Load "kernel" (userspace) GS */ +#define X86_FEATURE_WRMSRNS (12*32+19) /* "" Non-serializing WRMSR */ #define X86_FEATURE_AMX_FP16 (12*32+21) /* "" AMX fp16 Support */ #define X86_FEATURE_AVX_IFMA (12*32+23) /* "" Support for VPMADD52[H,L]UQ */ #define X86_FEATURE_LAM (12*32+26) /* Linear Address Masking */ @@ -442,6 +442,7 @@ #define X86_FEATURE_SEV (19*32+ 1) /* AMD Secure Encrypted Virtualization */ #define X86_FEATURE_VM_PAGE_FLUSH (19*32+ 2) /* "" VM Page Flush MSR is supported */ #define X86_FEATURE_SEV_ES (19*32+ 3) /* AMD Secure Encrypted Virtualization - Encrypted State */ +#define X86_FEATURE_SEV_SNP (19*32+ 4) /* AMD Secure Encrypted Virtualization - Secure Nested Paging */ #define X86_FEATURE_V_TSC_AUX (19*32+ 9) /* "" Virtual TSC_AUX */ #define X86_FEATURE_SME_COHERENT (19*32+10) /* "" AMD hardware-enforced cache coherency */ #define X86_FEATURE_DEBUG_SWAP (19*32+14) /* AMD SEV-ES full debug state swap support */ @@ -505,4 +506,5 @@ /* BUG word 2 */ #define X86_BUG_SRSO X86_BUG(1*32 + 0) /* AMD SRSO bug */ #define X86_BUG_DIV0 X86_BUG(1*32 + 1) /* AMD DIV0 speculation bug */ +#define X86_BUG_RFDS X86_BUG(1*32 + 2) /* CPU is vulnerable to Register File Data Sampling */ #endif /* _ASM_X86_CPUFEATURES_H */ diff --git a/arch/x86/include/asm/cpuid.h b/arch/x86/include/asm/cpuid.h index 9bee3e7bf973..6b122a31da06 100644 --- a/arch/x86/include/asm/cpuid.h +++ b/arch/x86/include/asm/cpuid.h @@ -127,6 +127,42 @@ static inline unsigned int cpuid_edx(unsigned int op) return edx; } +static inline void __cpuid_read(unsigned int leaf, unsigned int subleaf, u32 *regs) +{ + regs[CPUID_EAX] = leaf; + regs[CPUID_ECX] = subleaf; + __cpuid(regs + CPUID_EAX, regs + CPUID_EBX, regs + CPUID_ECX, regs + CPUID_EDX); +} + +#define cpuid_subleaf(leaf, subleaf, regs) { \ + static_assert(sizeof(*(regs)) == 16); \ + __cpuid_read(leaf, subleaf, (u32 *)(regs)); \ +} + +#define cpuid_leaf(leaf, regs) { \ + static_assert(sizeof(*(regs)) == 16); \ + __cpuid_read(leaf, 0, (u32 *)(regs)); \ +} + +static inline void __cpuid_read_reg(unsigned int leaf, unsigned int subleaf, + enum cpuid_regs_idx regidx, u32 *reg) +{ + u32 regs[4]; + + __cpuid_read(leaf, subleaf, regs); + *reg = regs[regidx]; +} + +#define cpuid_subleaf_reg(leaf, subleaf, regidx, reg) { \ + static_assert(sizeof(*(reg)) == 4); \ + __cpuid_read_reg(leaf, subleaf, regidx, (u32 *)(reg)); \ +} + +#define cpuid_leaf_reg(leaf, regidx, reg) { \ + static_assert(sizeof(*(reg)) == 4); \ + __cpuid_read_reg(leaf, 0, regidx, (u32 *)(reg)); \ +} + static __always_inline bool cpuid_function_is_indexed(u32 function) { switch (function) { diff --git a/arch/x86/include/asm/current.h b/arch/x86/include/asm/current.h index dd4b67101bb7..bf5953883ec3 100644 --- a/arch/x86/include/asm/current.h +++ b/arch/x86/include/asm/current.h @@ -18,7 +18,7 @@ struct pcpu_hot { struct task_struct *current_task; int preempt_count; int cpu_number; -#ifdef CONFIG_CALL_DEPTH_TRACKING +#ifdef CONFIG_MITIGATION_CALL_DEPTH_TRACKING u64 call_depth; #endif unsigned long top_of_stack; @@ -37,8 +37,15 @@ static_assert(sizeof(struct pcpu_hot) == 64); DECLARE_PER_CPU_ALIGNED(struct pcpu_hot, pcpu_hot); +/* const-qualified alias to pcpu_hot, aliased by linker. */ +DECLARE_PER_CPU_ALIGNED(const struct pcpu_hot __percpu_seg_override, + const_pcpu_hot); + static __always_inline struct task_struct *get_current(void) { + if (IS_ENABLED(CONFIG_USE_X86_SEG_SUPPORT)) + return this_cpu_read_const(const_pcpu_hot.current_task); + return this_cpu_read_stable(pcpu_hot.current_task); } diff --git a/arch/x86/include/asm/debugreg.h b/arch/x86/include/asm/debugreg.h index 0cec92c430cc..fdbbbfec745a 100644 --- a/arch/x86/include/asm/debugreg.h +++ b/arch/x86/include/asm/debugreg.h @@ -5,7 +5,9 @@ #include <linux/bug.h> #include <linux/percpu.h> #include <uapi/asm/debugreg.h> + #include <asm/cpufeature.h> +#include <asm/msr.h> DECLARE_PER_CPU(unsigned long, cpu_dr7); @@ -159,4 +161,26 @@ static inline unsigned long amd_get_dr_addr_mask(unsigned int dr) } #endif +static inline unsigned long get_debugctlmsr(void) +{ + unsigned long debugctlmsr = 0; + +#ifndef CONFIG_X86_DEBUGCTLMSR + if (boot_cpu_data.x86 < 6) + return 0; +#endif + rdmsrl(MSR_IA32_DEBUGCTLMSR, debugctlmsr); + + return debugctlmsr; +} + +static inline void update_debugctlmsr(unsigned long debugctlmsr) +{ +#ifndef CONFIG_X86_DEBUGCTLMSR + if (boot_cpu_data.x86 < 6) + return; +#endif + wrmsrl(MSR_IA32_DEBUGCTLMSR, debugctlmsr); +} + #endif /* _ASM_X86_DEBUGREG_H */ diff --git a/arch/x86/include/asm/desc.h b/arch/x86/include/asm/desc.h index ab97b22ac04a..62dc9f59ea76 100644 --- a/arch/x86/include/asm/desc.h +++ b/arch/x86/include/asm/desc.h @@ -46,6 +46,7 @@ struct gdt_page { } __attribute__((aligned(PAGE_SIZE))); DECLARE_PER_CPU_PAGE_ALIGNED(struct gdt_page, gdt_page); +DECLARE_INIT_PER_CPU(gdt_page); /* Provide the original GDT */ static inline struct desc_struct *get_cpu_gdt_rw(unsigned int cpu) @@ -402,8 +403,6 @@ static inline void set_desc_limit(struct desc_struct *desc, unsigned long limit) desc->limit1 = (limit >> 16) & 0xf; } -void alloc_intr_gate(unsigned int n, const void *addr); - static inline void init_idt_data(struct idt_data *data, unsigned int n, const void *addr) { diff --git a/arch/x86/include/asm/disabled-features.h b/arch/x86/include/asm/disabled-features.h index 702d93fdd10e..da4054fbf533 100644 --- a/arch/x86/include/asm/disabled-features.h +++ b/arch/x86/include/asm/disabled-features.h @@ -44,32 +44,32 @@ # define DISABLE_LA57 (1<<(X86_FEATURE_LA57 & 31)) #endif -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION # define DISABLE_PTI 0 #else # define DISABLE_PTI (1 << (X86_FEATURE_PTI & 31)) #endif -#ifdef CONFIG_RETPOLINE +#ifdef CONFIG_MITIGATION_RETPOLINE # define DISABLE_RETPOLINE 0 #else # define DISABLE_RETPOLINE ((1 << (X86_FEATURE_RETPOLINE & 31)) | \ (1 << (X86_FEATURE_RETPOLINE_LFENCE & 31))) #endif -#ifdef CONFIG_RETHUNK +#ifdef CONFIG_MITIGATION_RETHUNK # define DISABLE_RETHUNK 0 #else # define DISABLE_RETHUNK (1 << (X86_FEATURE_RETHUNK & 31)) #endif -#ifdef CONFIG_CPU_UNRET_ENTRY +#ifdef CONFIG_MITIGATION_UNRET_ENTRY # define DISABLE_UNRET 0 #else # define DISABLE_UNRET (1 << (X86_FEATURE_UNRET & 31)) #endif -#ifdef CONFIG_CALL_DEPTH_TRACKING +#ifdef CONFIG_MITIGATION_CALL_DEPTH_TRACKING # define DISABLE_CALL_DEPTH_TRACKING 0 #else # define DISABLE_CALL_DEPTH_TRACKING (1 << (X86_FEATURE_CALL_DEPTH & 31)) @@ -117,6 +117,18 @@ #define DISABLE_IBT (1 << (X86_FEATURE_IBT & 31)) #endif +#ifdef CONFIG_X86_FRED +# define DISABLE_FRED 0 +#else +# define DISABLE_FRED (1 << (X86_FEATURE_FRED & 31)) +#endif + +#ifdef CONFIG_KVM_AMD_SEV +#define DISABLE_SEV_SNP 0 +#else +#define DISABLE_SEV_SNP (1 << (X86_FEATURE_SEV_SNP & 31)) +#endif + /* * Make sure to add features to the correct mask */ @@ -133,7 +145,7 @@ #define DISABLED_MASK10 0 #define DISABLED_MASK11 (DISABLE_RETPOLINE|DISABLE_RETHUNK|DISABLE_UNRET| \ DISABLE_CALL_DEPTH_TRACKING|DISABLE_USER_SHSTK) -#define DISABLED_MASK12 (DISABLE_LAM) +#define DISABLED_MASK12 (DISABLE_FRED|DISABLE_LAM) #define DISABLED_MASK13 0 #define DISABLED_MASK14 0 #define DISABLED_MASK15 0 @@ -141,7 +153,7 @@ DISABLE_ENQCMD) #define DISABLED_MASK17 0 #define DISABLED_MASK18 (DISABLE_IBT) -#define DISABLED_MASK19 0 +#define DISABLED_MASK19 (DISABLE_SEV_SNP) #define DISABLED_MASK20 0 #define DISABLED_MASK_CHECK BUILD_BUG_ON_ZERO(NCAPINTS != 21) diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h index c4555b269a1b..1dc600fa3ba5 100644 --- a/arch/x86/include/asm/efi.h +++ b/arch/x86/include/asm/efi.h @@ -143,15 +143,6 @@ extern void efi_free_boot_services(void); void arch_efi_call_virt_setup(void); void arch_efi_call_virt_teardown(void); -/* kexec external ABI */ -struct efi_setup_data { - u64 fw_vendor; - u64 __unused; - u64 tables; - u64 smbios; - u64 reserved[8]; -}; - extern u64 efi_setup; #ifdef CONFIG_EFI @@ -418,8 +409,9 @@ extern int __init efi_memmap_split_count(efi_memory_desc_t *md, extern void __init efi_memmap_insert(struct efi_memory_map *old_memmap, void *buf, struct efi_mem_range *mem); -#define arch_ima_efi_boot_mode \ - ({ extern struct boot_params boot_params; boot_params.secure_boot; }) +extern enum efi_secureboot_mode __x86_ima_efi_boot_mode(void); + +#define arch_ima_efi_boot_mode __x86_ima_efi_boot_mode() #ifdef CONFIG_EFI_RUNTIME_MAP int efi_get_runtime_map_size(void); diff --git a/arch/x86/include/asm/elf.h b/arch/x86/include/asm/elf.h index 1e16bd5ac781..1fb83d47711f 100644 --- a/arch/x86/include/asm/elf.h +++ b/arch/x86/include/asm/elf.h @@ -392,5 +392,4 @@ struct va_alignment { } ____cacheline_aligned; extern struct va_alignment va_align; -extern unsigned long align_vdso_addr(unsigned long); #endif /* _ASM_X86_ELF_H */ diff --git a/arch/x86/include/asm/entry-common.h b/arch/x86/include/asm/entry-common.h index ce8f50192ae3..7e523bb3d2d3 100644 --- a/arch/x86/include/asm/entry-common.h +++ b/arch/x86/include/asm/entry-common.h @@ -91,7 +91,6 @@ static inline void arch_exit_to_user_mode_prepare(struct pt_regs *regs, static __always_inline void arch_exit_to_user_mode(void) { - mds_user_clear_cpu_buffers(); amd_clear_divider(); } #define arch_exit_to_user_mode arch_exit_to_user_mode diff --git a/arch/x86/include/asm/extable_fixup_types.h b/arch/x86/include/asm/extable_fixup_types.h index fe6312045042..7acf0383be80 100644 --- a/arch/x86/include/asm/extable_fixup_types.h +++ b/arch/x86/include/asm/extable_fixup_types.h @@ -64,6 +64,8 @@ #define EX_TYPE_UCOPY_LEN4 (EX_TYPE_UCOPY_LEN | EX_DATA_IMM(4)) #define EX_TYPE_UCOPY_LEN8 (EX_TYPE_UCOPY_LEN | EX_DATA_IMM(8)) -#define EX_TYPE_ZEROPAD 20 /* longword load with zeropad on fault */ +#define EX_TYPE_ZEROPAD 20 /* longword load with zeropad on fault */ + +#define EX_TYPE_ERETU 21 #endif diff --git a/arch/x86/include/asm/fpu/sched.h b/arch/x86/include/asm/fpu/sched.h index ca6e5e5f16b2..c485f1944c5f 100644 --- a/arch/x86/include/asm/fpu/sched.h +++ b/arch/x86/include/asm/fpu/sched.h @@ -37,10 +37,12 @@ extern void fpu_flush_thread(void); * The FPU context is only stored/restored for a user task and * PF_KTHREAD is used to distinguish between kernel and user threads. */ -static inline void switch_fpu_prepare(struct fpu *old_fpu, int cpu) +static inline void switch_fpu_prepare(struct task_struct *old, int cpu) { if (cpu_feature_enabled(X86_FEATURE_FPU) && - !(current->flags & (PF_KTHREAD | PF_USER_WORKER))) { + !(old->flags & (PF_KTHREAD | PF_USER_WORKER))) { + struct fpu *old_fpu = &old->thread.fpu; + save_fpregs_to_fpstate(old_fpu); /* * The save operation preserved register state, so the @@ -60,10 +62,10 @@ static inline void switch_fpu_prepare(struct fpu *old_fpu, int cpu) * Delay loading of the complete FPU state until the return to userland. * PKRU is handled separately. */ -static inline void switch_fpu_finish(void) +static inline void switch_fpu_finish(struct task_struct *new) { if (cpu_feature_enabled(X86_FEATURE_FPU)) - set_thread_flag(TIF_NEED_FPU_LOAD); + set_tsk_thread_flag(new, TIF_NEED_FPU_LOAD); } #endif /* _ASM_X86_FPU_SCHED_H */ diff --git a/arch/x86/include/asm/fred.h b/arch/x86/include/asm/fred.h new file mode 100644 index 000000000000..e86c7ba32435 --- /dev/null +++ b/arch/x86/include/asm/fred.h @@ -0,0 +1,97 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Macros for Flexible Return and Event Delivery (FRED) + */ + +#ifndef ASM_X86_FRED_H +#define ASM_X86_FRED_H + +#include <linux/const.h> + +#include <asm/asm.h> +#include <asm/trapnr.h> + +/* + * FRED event return instruction opcodes for ERET{S,U}; supported in + * binutils >= 2.41. + */ +#define ERETS _ASM_BYTES(0xf2,0x0f,0x01,0xca) +#define ERETU _ASM_BYTES(0xf3,0x0f,0x01,0xca) + +/* + * RSP is aligned to a 64-byte boundary before used to push a new stack frame + */ +#define FRED_STACK_FRAME_RSP_MASK _AT(unsigned long, (~0x3f)) + +/* + * Used for the return address for call emulation during code patching, + * and measured in 64-byte cache lines. + */ +#define FRED_CONFIG_REDZONE_AMOUNT 1 +#define FRED_CONFIG_REDZONE (_AT(unsigned long, FRED_CONFIG_REDZONE_AMOUNT) << 6) +#define FRED_CONFIG_INT_STKLVL(l) (_AT(unsigned long, l) << 9) +#define FRED_CONFIG_ENTRYPOINT(p) _AT(unsigned long, (p)) + +#ifndef __ASSEMBLY__ + +#ifdef CONFIG_X86_FRED +#include <linux/kernel.h> + +#include <asm/ptrace.h> + +struct fred_info { + /* Event data: CR2, DR6, ... */ + unsigned long edata; + unsigned long resv; +}; + +/* Full format of the FRED stack frame */ +struct fred_frame { + struct pt_regs regs; + struct fred_info info; +}; + +static __always_inline struct fred_info *fred_info(struct pt_regs *regs) +{ + return &container_of(regs, struct fred_frame, regs)->info; +} + +static __always_inline unsigned long fred_event_data(struct pt_regs *regs) +{ + return fred_info(regs)->edata; +} + +void asm_fred_entrypoint_user(void); +void asm_fred_entrypoint_kernel(void); +void asm_fred_entry_from_kvm(struct fred_ss); + +__visible void fred_entry_from_user(struct pt_regs *regs); +__visible void fred_entry_from_kernel(struct pt_regs *regs); +__visible void __fred_entry_from_kvm(struct pt_regs *regs); + +/* Can be called from noinstr code, thus __always_inline */ +static __always_inline void fred_entry_from_kvm(unsigned int type, unsigned int vector) +{ + struct fred_ss ss = { + .ss =__KERNEL_DS, + .type = type, + .vector = vector, + .nmi = type == EVENT_TYPE_NMI, + .lm = 1, + }; + + asm_fred_entry_from_kvm(ss); +} + +void cpu_init_fred_exceptions(void); +void fred_complete_exception_setup(void); + +#else /* CONFIG_X86_FRED */ +static __always_inline unsigned long fred_event_data(struct pt_regs *regs) { return 0; } +static inline void cpu_init_fred_exceptions(void) { } +static inline void fred_complete_exception_setup(void) { } +static __always_inline void fred_entry_from_kvm(unsigned int type, unsigned int vector) { } +#endif /* CONFIG_X86_FRED */ +#endif /* !__ASSEMBLY__ */ + +#endif /* ASM_X86_FRED_H */ diff --git a/arch/x86/include/asm/fsgsbase.h b/arch/x86/include/asm/fsgsbase.h index 35cff5f2becf..9e7e8ca8e299 100644 --- a/arch/x86/include/asm/fsgsbase.h +++ b/arch/x86/include/asm/fsgsbase.h @@ -6,7 +6,7 @@ #ifdef CONFIG_X86_64 -#include <asm/msr-index.h> +#include <asm/msr.h> /* * Read/write a task's FSBASE or GSBASE. This returns the value that diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h index b02c3cd3c0f6..edebf1020e04 100644 --- a/arch/x86/include/asm/hw_irq.h +++ b/arch/x86/include/asm/hw_irq.h @@ -16,8 +16,6 @@ #include <asm/irq_vectors.h> -#define IRQ_MATRIX_BITS NR_VECTORS - #ifndef __ASSEMBLY__ #include <linux/percpu.h> diff --git a/arch/x86/include/asm/ia32.h b/arch/x86/include/asm/ia32.h index c7ef6ea2fa99..4212c00c9708 100644 --- a/arch/x86/include/asm/ia32.h +++ b/arch/x86/include/asm/ia32.h @@ -69,7 +69,7 @@ extern void ia32_pick_mmap_layout(struct mm_struct *mm); extern bool __ia32_enabled; -static inline bool ia32_enabled(void) +static __always_inline bool ia32_enabled(void) { return __ia32_enabled; } @@ -81,7 +81,7 @@ static inline void ia32_disable(void) #else /* !CONFIG_IA32_EMULATION */ -static inline bool ia32_enabled(void) +static __always_inline bool ia32_enabled(void) { return IS_ENABLED(CONFIG_X86_32); } diff --git a/arch/x86/include/asm/idtentry.h b/arch/x86/include/asm/idtentry.h index 13639e57e1f8..47d4c04d103d 100644 --- a/arch/x86/include/asm/idtentry.h +++ b/arch/x86/include/asm/idtentry.h @@ -13,15 +13,18 @@ #include <asm/irq_stack.h> +typedef void (*idtentry_t)(struct pt_regs *regs); + /** * DECLARE_IDTENTRY - Declare functions for simple IDT entry points * No error code pushed by hardware * @vector: Vector number (ignored for C) * @func: Function name of the entry point * - * Declares three functions: + * Declares four functions: * - The ASM entry point: asm_##func * - The XEN PV trap entry point: xen_##func (maybe unused) + * - The C handler called from the FRED event dispatcher (maybe unused) * - The C handler called from the ASM entry point * * Note: This is the C variant of DECLARE_IDTENTRY(). As the name says it @@ -31,6 +34,7 @@ #define DECLARE_IDTENTRY(vector, func) \ asmlinkage void asm_##func(void); \ asmlinkage void xen_asm_##func(void); \ + void fred_##func(struct pt_regs *regs); \ __visible void func(struct pt_regs *regs) /** @@ -138,6 +142,17 @@ static __always_inline void __##func(struct pt_regs *regs, \ __visible noinstr void func(struct pt_regs *regs) /** + * DEFINE_FREDENTRY_RAW - Emit code for raw FRED entry points + * @func: Function name of the entry point + * + * @func is called from the FRED event dispatcher with interrupts disabled. + * + * See @DEFINE_IDTENTRY_RAW for further details. + */ +#define DEFINE_FREDENTRY_RAW(func) \ +noinstr void fred_##func(struct pt_regs *regs) + +/** * DECLARE_IDTENTRY_RAW_ERRORCODE - Declare functions for raw IDT entry points * Error code pushed by hardware * @vector: Vector number (ignored for C) @@ -233,17 +248,27 @@ static noinline void __##func(struct pt_regs *regs, u32 vector) #define DEFINE_IDTENTRY_SYSVEC(func) \ static void __##func(struct pt_regs *regs); \ \ +static __always_inline void instr_##func(struct pt_regs *regs) \ +{ \ + kvm_set_cpu_l1tf_flush_l1d(); \ + run_sysvec_on_irqstack_cond(__##func, regs); \ +} \ + \ __visible noinstr void func(struct pt_regs *regs) \ { \ irqentry_state_t state = irqentry_enter(regs); \ \ instrumentation_begin(); \ - kvm_set_cpu_l1tf_flush_l1d(); \ - run_sysvec_on_irqstack_cond(__##func, regs); \ + instr_##func (regs); \ instrumentation_end(); \ irqentry_exit(regs, state); \ } \ \ +void fred_##func(struct pt_regs *regs) \ +{ \ + instr_##func (regs); \ +} \ + \ static noinline void __##func(struct pt_regs *regs) /** @@ -260,19 +285,29 @@ static noinline void __##func(struct pt_regs *regs) #define DEFINE_IDTENTRY_SYSVEC_SIMPLE(func) \ static __always_inline void __##func(struct pt_regs *regs); \ \ -__visible noinstr void func(struct pt_regs *regs) \ +static __always_inline void instr_##func(struct pt_regs *regs) \ { \ - irqentry_state_t state = irqentry_enter(regs); \ - \ - instrumentation_begin(); \ __irq_enter_raw(); \ kvm_set_cpu_l1tf_flush_l1d(); \ __##func (regs); \ __irq_exit_raw(); \ +} \ + \ +__visible noinstr void func(struct pt_regs *regs) \ +{ \ + irqentry_state_t state = irqentry_enter(regs); \ + \ + instrumentation_begin(); \ + instr_##func (regs); \ instrumentation_end(); \ irqentry_exit(regs, state); \ } \ \ +void fred_##func(struct pt_regs *regs) \ +{ \ + instr_##func (regs); \ +} \ + \ static __always_inline void __##func(struct pt_regs *regs) /** @@ -410,17 +445,35 @@ __visible noinstr void func(struct pt_regs *regs, \ /* C-Code mapping */ #define DECLARE_IDTENTRY_NMI DECLARE_IDTENTRY_RAW #define DEFINE_IDTENTRY_NMI DEFINE_IDTENTRY_RAW +#define DEFINE_FREDENTRY_NMI DEFINE_FREDENTRY_RAW #ifdef CONFIG_X86_64 #define DECLARE_IDTENTRY_MCE DECLARE_IDTENTRY_IST #define DEFINE_IDTENTRY_MCE DEFINE_IDTENTRY_IST #define DEFINE_IDTENTRY_MCE_USER DEFINE_IDTENTRY_NOIST +#define DEFINE_FREDENTRY_MCE DEFINE_FREDENTRY_RAW #define DECLARE_IDTENTRY_DEBUG DECLARE_IDTENTRY_IST #define DEFINE_IDTENTRY_DEBUG DEFINE_IDTENTRY_IST #define DEFINE_IDTENTRY_DEBUG_USER DEFINE_IDTENTRY_NOIST +#define DEFINE_FREDENTRY_DEBUG DEFINE_FREDENTRY_RAW +#endif + +void idt_install_sysvec(unsigned int n, const void *function); + +#ifdef CONFIG_X86_FRED +void fred_install_sysvec(unsigned int vector, const idtentry_t function); +#else +static inline void fred_install_sysvec(unsigned int vector, const idtentry_t function) { } #endif +#define sysvec_install(vector, function) { \ + if (cpu_feature_enabled(X86_FEATURE_FRED)) \ + fred_install_sysvec(vector, function); \ + else \ + idt_install_sysvec(vector, asm_##function); \ +} + #else /* !__ASSEMBLY__ */ /* @@ -447,7 +500,7 @@ __visible noinstr void func(struct pt_regs *regs, \ /* System vector entries */ #define DECLARE_IDTENTRY_SYSVEC(vector, func) \ - idtentry_sysvec vector func + DECLARE_IDTENTRY(vector, func) #ifdef CONFIG_X86_64 # define DECLARE_IDTENTRY_MCE(vector, func) \ @@ -655,23 +708,36 @@ DECLARE_IDTENTRY(RESCHEDULE_VECTOR, sysvec_reschedule_ipi); DECLARE_IDTENTRY_SYSVEC(REBOOT_VECTOR, sysvec_reboot); DECLARE_IDTENTRY_SYSVEC(CALL_FUNCTION_SINGLE_VECTOR, sysvec_call_function_single); DECLARE_IDTENTRY_SYSVEC(CALL_FUNCTION_VECTOR, sysvec_call_function); +#else +# define fred_sysvec_reschedule_ipi NULL +# define fred_sysvec_reboot NULL +# define fred_sysvec_call_function_single NULL +# define fred_sysvec_call_function NULL #endif #ifdef CONFIG_X86_LOCAL_APIC # ifdef CONFIG_X86_MCE_THRESHOLD DECLARE_IDTENTRY_SYSVEC(THRESHOLD_APIC_VECTOR, sysvec_threshold); +# else +# define fred_sysvec_threshold NULL # endif # ifdef CONFIG_X86_MCE_AMD DECLARE_IDTENTRY_SYSVEC(DEFERRED_ERROR_VECTOR, sysvec_deferred_error); +# else +# define fred_sysvec_deferred_error NULL # endif # ifdef CONFIG_X86_THERMAL_VECTOR DECLARE_IDTENTRY_SYSVEC(THERMAL_APIC_VECTOR, sysvec_thermal); +# else +# define fred_sysvec_thermal NULL # endif # ifdef CONFIG_IRQ_WORK DECLARE_IDTENTRY_SYSVEC(IRQ_WORK_VECTOR, sysvec_irq_work); +# else +# define fred_sysvec_irq_work NULL # endif #endif @@ -679,12 +745,16 @@ DECLARE_IDTENTRY_SYSVEC(IRQ_WORK_VECTOR, sysvec_irq_work); DECLARE_IDTENTRY_SYSVEC(POSTED_INTR_VECTOR, sysvec_kvm_posted_intr_ipi); DECLARE_IDTENTRY_SYSVEC(POSTED_INTR_WAKEUP_VECTOR, sysvec_kvm_posted_intr_wakeup_ipi); DECLARE_IDTENTRY_SYSVEC(POSTED_INTR_NESTED_VECTOR, sysvec_kvm_posted_intr_nested_ipi); +#else +# define fred_sysvec_kvm_posted_intr_ipi NULL +# define fred_sysvec_kvm_posted_intr_wakeup_ipi NULL +# define fred_sysvec_kvm_posted_intr_nested_ipi NULL #endif #if IS_ENABLED(CONFIG_HYPERV) DECLARE_IDTENTRY_SYSVEC(HYPERVISOR_CALLBACK_VECTOR, sysvec_hyperv_callback); DECLARE_IDTENTRY_SYSVEC(HYPERV_REENLIGHTENMENT_VECTOR, sysvec_hyperv_reenlightenment); -DECLARE_IDTENTRY_SYSVEC(HYPERV_STIMER0_VECTOR, sysvec_hyperv_stimer0); +DECLARE_IDTENTRY_SYSVEC(HYPERV_STIMER0_VECTOR, sysvec_hyperv_stimer0); #endif #if IS_ENABLED(CONFIG_ACRN_GUEST) diff --git a/arch/x86/include/asm/intel-family.h b/arch/x86/include/asm/intel-family.h index 197316121f04..b65e9c46b922 100644 --- a/arch/x86/include/asm/intel-family.h +++ b/arch/x86/include/asm/intel-family.h @@ -162,6 +162,8 @@ #define INTEL_FAM6_ATOM_CRESTMONT_X 0xAF /* Sierra Forest */ #define INTEL_FAM6_ATOM_CRESTMONT 0xB6 /* Grand Ridge */ +#define INTEL_FAM6_ATOM_DARKMONT_X 0xDD /* Clearwater Forest */ + /* Xeon Phi */ #define INTEL_FAM6_XEON_PHI_KNL 0x57 /* Knights Landing */ diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h index 3814a9263d64..294cd2a40818 100644 --- a/arch/x86/include/asm/io.h +++ b/arch/x86/include/asm/io.h @@ -379,7 +379,7 @@ static inline void iosubmit_cmds512(void __iomem *dst, const void *src, const u8 *end = from + count * 64; while (from < end) { - movdir64b(dst, from); + movdir64b_io(dst, from); from += 64; } } diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h index 51c782600e02..0d806513c4b3 100644 --- a/arch/x86/include/asm/io_apic.h +++ b/arch/x86/include/asm/io_apic.h @@ -140,7 +140,6 @@ extern void mask_ioapic_entries(void); extern int restore_ioapic_entries(void); extern void setup_ioapic_ids_from_mpc(void); -extern void setup_ioapic_ids_from_mpc_nocheck(void); extern int mp_find_ioapic(u32 gsi); extern int mp_find_ioapic_pin(int ioapic, u32 gsi); diff --git a/arch/x86/include/asm/iommu.h b/arch/x86/include/asm/iommu.h index 2fd52b65deac..3be2451e7bc8 100644 --- a/arch/x86/include/asm/iommu.h +++ b/arch/x86/include/asm/iommu.h @@ -10,6 +10,7 @@ extern int force_iommu, no_iommu; extern int iommu_detected; extern int iommu_merge; extern int panic_on_overflow; +extern bool amd_iommu_snp_en; #ifdef CONFIG_SWIOTLB extern bool x86_swiotlb_enable; diff --git a/arch/x86/include/asm/jump_label.h b/arch/x86/include/asm/jump_label.h index 071572e23d3a..cbbef32517f0 100644 --- a/arch/x86/include/asm/jump_label.h +++ b/arch/x86/include/asm/jump_label.h @@ -24,7 +24,7 @@ static __always_inline bool arch_static_branch(struct static_key *key, bool branch) { - asm_volatile_goto("1:" + asm goto("1:" "jmp %l[l_yes] # objtool NOPs this \n\t" JUMP_TABLE_ENTRY : : "i" (key), "i" (2 | branch) : : l_yes); @@ -38,7 +38,7 @@ l_yes: static __always_inline bool arch_static_branch(struct static_key * const key, const bool branch) { - asm_volatile_goto("1:" + asm goto("1:" ".byte " __stringify(BYTES_NOP5) "\n\t" JUMP_TABLE_ENTRY : : "i" (key), "i" (branch) : : l_yes); @@ -52,7 +52,7 @@ l_yes: static __always_inline bool arch_static_branch_jump(struct static_key * const key, const bool branch) { - asm_volatile_goto("1:" + asm goto("1:" "jmp %l[l_yes]\n\t" JUMP_TABLE_ENTRY : : "i" (key), "i" (branch) : : l_yes); diff --git a/arch/x86/include/asm/kexec.h b/arch/x86/include/asm/kexec.h index c9f6a6c5de3c..91ca9a9ee3a2 100644 --- a/arch/x86/include/asm/kexec.h +++ b/arch/x86/include/asm/kexec.h @@ -25,7 +25,6 @@ #include <asm/page.h> #include <asm/ptrace.h> -#include <asm/bootparam.h> struct kimage; diff --git a/arch/x86/include/asm/kmsan.h b/arch/x86/include/asm/kmsan.h index 8fa6ac0e2d76..d91b37f5b4bb 100644 --- a/arch/x86/include/asm/kmsan.h +++ b/arch/x86/include/asm/kmsan.h @@ -64,6 +64,7 @@ static inline bool kmsan_virt_addr_valid(void *addr) { unsigned long x = (unsigned long)addr; unsigned long y = x - __START_KERNEL_map; + bool ret; /* use the carry flag to determine if x was < __START_KERNEL_map */ if (unlikely(x > y)) { @@ -79,7 +80,21 @@ static inline bool kmsan_virt_addr_valid(void *addr) return false; } - return pfn_valid(x >> PAGE_SHIFT); + /* + * pfn_valid() relies on RCU, and may call into the scheduler on exiting + * the critical section. However, this would result in recursion with + * KMSAN. Therefore, disable preemption here, and re-enable preemption + * below while suppressing reschedules to avoid recursion. + * + * Note, this sacrifices occasionally breaking scheduling guarantees. + * Although, a kernel compiled with KMSAN has already given up on any + * performance guarantees due to being heavily instrumented. + */ + preempt_disable(); + ret = pfn_valid(x >> PAGE_SHIFT); + preempt_enable_no_resched(); + + return ret; } #endif /* !MODULE */ diff --git a/arch/x86/include/asm/kvm-x86-ops.h b/arch/x86/include/asm/kvm-x86-ops.h index 378ed944b849..ab24ce207988 100644 --- a/arch/x86/include/asm/kvm-x86-ops.h +++ b/arch/x86/include/asm/kvm-x86-ops.h @@ -138,6 +138,7 @@ KVM_X86_OP(complete_emulated_msr) KVM_X86_OP(vcpu_deliver_sipi_vector) KVM_X86_OP_OPTIONAL_RET0(vcpu_get_apicv_inhibit_reasons); KVM_X86_OP_OPTIONAL(get_untagged_addr) +KVM_X86_OP_OPTIONAL(alloc_apic_backing_page) #undef KVM_X86_OP #undef KVM_X86_OP_OPTIONAL diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index b5b2d0fde579..18cbde14cf81 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1145,6 +1145,8 @@ struct kvm_hv { unsigned int synic_auto_eoi_used; struct kvm_hv_syndbg hv_syndbg; + + bool xsaves_xsavec_checked; }; #endif @@ -1794,6 +1796,7 @@ struct kvm_x86_ops { unsigned long (*vcpu_get_apicv_inhibit_reasons)(struct kvm_vcpu *vcpu); gva_t (*get_untagged_addr)(struct kvm_vcpu *vcpu, gva_t gva, unsigned int flags); + void *(*alloc_apic_backing_page)(struct kvm_vcpu *vcpu); }; struct kvm_x86_nested_ops { diff --git a/arch/x86/include/asm/kvmclock.h b/arch/x86/include/asm/kvmclock.h index 511b35069187..f163176d6f7f 100644 --- a/arch/x86/include/asm/kvmclock.h +++ b/arch/x86/include/asm/kvmclock.h @@ -4,8 +4,6 @@ #include <linux/percpu.h> -extern struct clocksource kvm_clock; - DECLARE_PER_CPU(struct pvclock_vsyscall_time_info *, hv_clock_per_cpu); static __always_inline struct pvclock_vcpu_time_info *this_cpu_pvti(void) diff --git a/arch/x86/include/asm/linkage.h b/arch/x86/include/asm/linkage.h index 571fe4d2d232..dc31b13b87a0 100644 --- a/arch/x86/include/asm/linkage.h +++ b/arch/x86/include/asm/linkage.h @@ -40,27 +40,27 @@ #ifdef __ASSEMBLY__ -#if defined(CONFIG_RETHUNK) && !defined(__DISABLE_EXPORTS) && !defined(BUILD_VDSO) +#if defined(CONFIG_MITIGATION_RETHUNK) && !defined(__DISABLE_EXPORTS) && !defined(BUILD_VDSO) #define RET jmp __x86_return_thunk -#else /* CONFIG_RETPOLINE */ -#ifdef CONFIG_SLS +#else /* CONFIG_MITIGATION_RETPOLINE */ +#ifdef CONFIG_MITIGATION_SLS #define RET ret; int3 #else #define RET ret #endif -#endif /* CONFIG_RETPOLINE */ +#endif /* CONFIG_MITIGATION_RETPOLINE */ #else /* __ASSEMBLY__ */ -#if defined(CONFIG_RETHUNK) && !defined(__DISABLE_EXPORTS) && !defined(BUILD_VDSO) +#if defined(CONFIG_MITIGATION_RETHUNK) && !defined(__DISABLE_EXPORTS) && !defined(BUILD_VDSO) #define ASM_RET "jmp __x86_return_thunk\n\t" -#else /* CONFIG_RETPOLINE */ -#ifdef CONFIG_SLS +#else /* CONFIG_MITIGATION_RETPOLINE */ +#ifdef CONFIG_MITIGATION_SLS #define ASM_RET "ret; int3\n\t" #else #define ASM_RET "ret\n\t" #endif -#endif /* CONFIG_RETPOLINE */ +#endif /* CONFIG_MITIGATION_RETPOLINE */ #endif /* __ASSEMBLY__ */ diff --git a/arch/x86/include/asm/local.h b/arch/x86/include/asm/local.h index 73dba8b94443..59aa966dc212 100644 --- a/arch/x86/include/asm/local.h +++ b/arch/x86/include/asm/local.h @@ -131,8 +131,20 @@ static inline bool local_try_cmpxchg(local_t *l, long *old, long new) (typeof(l->a.counter) *) old, new); } -/* Always has a lock prefix */ -#define local_xchg(l, n) (xchg(&((l)->a.counter), (n))) +/* + * Implement local_xchg using CMPXCHG instruction without the LOCK prefix. + * XCHG is expensive due to the implied LOCK prefix. The processor + * cannot prefetch cachelines if XCHG is used. + */ +static __always_inline long +local_xchg(local_t *l, long n) +{ + long c = local_read(l); + + do { } while (!local_try_cmpxchg(l, &c, n)); + + return c; +} /** * local_add_unless - add unless the number is already a given value diff --git a/arch/x86/include/asm/mem_encrypt.h b/arch/x86/include/asm/mem_encrypt.h index 359ada486fa9..f922b682b9b4 100644 --- a/arch/x86/include/asm/mem_encrypt.h +++ b/arch/x86/include/asm/mem_encrypt.h @@ -15,7 +15,8 @@ #include <linux/init.h> #include <linux/cc_platform.h> -#include <asm/bootparam.h> +#include <asm/asm.h> +struct boot_params; #ifdef CONFIG_X86_MEM_ENCRYPT void __init mem_encrypt_init(void); @@ -46,8 +47,8 @@ void __init sme_unmap_bootdata(char *real_mode_data); void __init sme_early_init(void); -void __init sme_encrypt_kernel(struct boot_params *bp); -void __init sme_enable(struct boot_params *bp); +void sme_encrypt_kernel(struct boot_params *bp); +void sme_enable(struct boot_params *bp); int __init early_set_memory_decrypted(unsigned long vaddr, unsigned long size); int __init early_set_memory_encrypted(unsigned long vaddr, unsigned long size); @@ -58,6 +59,11 @@ void __init mem_encrypt_free_decrypted_mem(void); void __init sev_es_init_vc_handling(void); +static inline u64 sme_get_me_mask(void) +{ + return RIP_REL_REF(sme_me_mask); +} + #define __bss_decrypted __section(".bss..decrypted") #else /* !CONFIG_AMD_MEM_ENCRYPT */ @@ -75,8 +81,8 @@ static inline void __init sme_unmap_bootdata(char *real_mode_data) { } static inline void __init sme_early_init(void) { } -static inline void __init sme_encrypt_kernel(struct boot_params *bp) { } -static inline void __init sme_enable(struct boot_params *bp) { } +static inline void sme_encrypt_kernel(struct boot_params *bp) { } +static inline void sme_enable(struct boot_params *bp) { } static inline void sev_es_init_vc_handling(void) { } @@ -89,6 +95,8 @@ early_set_mem_enc_dec_hypercall(unsigned long vaddr, unsigned long size, bool en static inline void mem_encrypt_free_decrypted_mem(void) { } +static inline u64 sme_get_me_mask(void) { return 0; } + #define __bss_decrypted #endif /* CONFIG_AMD_MEM_ENCRYPT */ @@ -106,11 +114,6 @@ void add_encrypt_protection_map(void); extern char __start_bss_decrypted[], __end_bss_decrypted[], __start_bss_decrypted_unused[]; -static inline u64 sme_get_me_mask(void) -{ - return sme_me_mask; -} - #endif /* __ASSEMBLY__ */ #endif /* __X86_MEM_ENCRYPT_H__ */ diff --git a/arch/x86/include/asm/mpspec.h b/arch/x86/include/asm/mpspec.h index 4b0f98a8d338..c72c7ff78fcd 100644 --- a/arch/x86/include/asm/mpspec.h +++ b/arch/x86/include/asm/mpspec.h @@ -2,6 +2,7 @@ #ifndef _ASM_X86_MPSPEC_H #define _ASM_X86_MPSPEC_H +#include <linux/types.h> #include <asm/mpspec_def.h> #include <asm/x86_init.h> @@ -46,70 +47,31 @@ extern int smp_found_config; # define smp_found_config 0 #endif -static inline void get_smp_config(void) -{ - x86_init.mpparse.get_smp_config(0); -} - -static inline void early_get_smp_config(void) -{ - x86_init.mpparse.get_smp_config(1); -} - -static inline void find_smp_config(void) -{ - x86_init.mpparse.find_smp_config(); -} - #ifdef CONFIG_X86_MPPARSE extern void e820__memblock_alloc_reserved_mpc_new(void); extern int enable_update_mptable; -extern void default_find_smp_config(void); -extern void default_get_smp_config(unsigned int early); +extern void mpparse_find_mptable(void); +extern void mpparse_parse_early_smp_config(void); +extern void mpparse_parse_smp_config(void); #else static inline void e820__memblock_alloc_reserved_mpc_new(void) { } -#define enable_update_mptable 0 -#define default_find_smp_config x86_init_noop -#define default_get_smp_config x86_init_uint_noop +#define enable_update_mptable 0 +#define mpparse_find_mptable x86_init_noop +#define mpparse_parse_early_smp_config x86_init_noop +#define mpparse_parse_smp_config x86_init_noop #endif -int generic_processor_info(int apicid); +extern DECLARE_BITMAP(phys_cpu_present_map, MAX_LOCAL_APIC); -#define PHYSID_ARRAY_SIZE BITS_TO_LONGS(MAX_LOCAL_APIC) - -struct physid_mask { - unsigned long mask[PHYSID_ARRAY_SIZE]; -}; - -typedef struct physid_mask physid_mask_t; - -#define physid_set(physid, map) set_bit(physid, (map).mask) -#define physid_isset(physid, map) test_bit(physid, (map).mask) - -#define physids_or(dst, src1, src2) \ - bitmap_or((dst).mask, (src1).mask, (src2).mask, MAX_LOCAL_APIC) - -#define physids_clear(map) \ - bitmap_zero((map).mask, MAX_LOCAL_APIC) - -#define physids_empty(map) \ - bitmap_empty((map).mask, MAX_LOCAL_APIC) - -static inline void physids_promote(unsigned long physids, physid_mask_t *map) +static inline void reset_phys_cpu_present_map(u32 apicid) { - physids_clear(*map); - map->mask[0] = physids; + bitmap_zero(phys_cpu_present_map, MAX_LOCAL_APIC); + set_bit(apicid, phys_cpu_present_map); } -static inline void physid_set_mask_of_physid(int physid, physid_mask_t *map) +static inline void copy_phys_cpu_present_map(unsigned long *dst) { - physids_clear(*map); - physid_set(physid, *map); + bitmap_copy(dst, phys_cpu_present_map, MAX_LOCAL_APIC); } -#define PHYSID_MASK_ALL { {[0 ... PHYSID_ARRAY_SIZE-1] = ~0UL} } -#define PHYSID_MASK_NONE { {[0 ... PHYSID_ARRAY_SIZE-1] = 0UL} } - -extern physid_mask_t phys_cpu_present_map; - #endif /* _ASM_X86_MPSPEC_H */ diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h index f1bd7b91b3c6..05956bd8bacf 100644 --- a/arch/x86/include/asm/msr-index.h +++ b/arch/x86/include/asm/msr-index.h @@ -36,8 +36,19 @@ #define EFER_FFXSR (1<<_EFER_FFXSR) #define EFER_AUTOIBRS (1<<_EFER_AUTOIBRS) -/* Intel MSRs. Some also available on other CPUs */ +/* FRED MSRs */ +#define MSR_IA32_FRED_RSP0 0x1cc /* Level 0 stack pointer */ +#define MSR_IA32_FRED_RSP1 0x1cd /* Level 1 stack pointer */ +#define MSR_IA32_FRED_RSP2 0x1ce /* Level 2 stack pointer */ +#define MSR_IA32_FRED_RSP3 0x1cf /* Level 3 stack pointer */ +#define MSR_IA32_FRED_STKLVLS 0x1d0 /* Exception stack levels */ +#define MSR_IA32_FRED_SSP0 MSR_IA32_PL0_SSP /* Level 0 shadow stack pointer */ +#define MSR_IA32_FRED_SSP1 0x1d1 /* Level 1 shadow stack pointer */ +#define MSR_IA32_FRED_SSP2 0x1d2 /* Level 2 shadow stack pointer */ +#define MSR_IA32_FRED_SSP3 0x1d3 /* Level 3 shadow stack pointer */ +#define MSR_IA32_FRED_CONFIG 0x1d4 /* Entrypoint and interrupt stack level */ +/* Intel MSRs. Some also available on other CPUs */ #define MSR_TEST_CTRL 0x00000033 #define MSR_TEST_CTRL_SPLIT_LOCK_DETECT_BIT 29 #define MSR_TEST_CTRL_SPLIT_LOCK_DETECT BIT(MSR_TEST_CTRL_SPLIT_LOCK_DETECT_BIT) @@ -165,6 +176,14 @@ * CPU is not vulnerable to Gather * Data Sampling (GDS). */ +#define ARCH_CAP_RFDS_NO BIT(27) /* + * Not susceptible to Register + * File Data Sampling. + */ +#define ARCH_CAP_RFDS_CLEAR BIT(28) /* + * VERW clears CPU Register + * File. + */ #define ARCH_CAP_XAPIC_DISABLE BIT(21) /* * IA32_XAPIC_DISABLE_STATUS MSR @@ -594,34 +613,47 @@ #define MSR_AMD64_SEV_ES_GHCB 0xc0010130 #define MSR_AMD64_SEV 0xc0010131 #define MSR_AMD64_SEV_ENABLED_BIT 0 -#define MSR_AMD64_SEV_ES_ENABLED_BIT 1 -#define MSR_AMD64_SEV_SNP_ENABLED_BIT 2 #define MSR_AMD64_SEV_ENABLED BIT_ULL(MSR_AMD64_SEV_ENABLED_BIT) +#define MSR_AMD64_SEV_ES_ENABLED_BIT 1 #define MSR_AMD64_SEV_ES_ENABLED BIT_ULL(MSR_AMD64_SEV_ES_ENABLED_BIT) +#define MSR_AMD64_SEV_SNP_ENABLED_BIT 2 #define MSR_AMD64_SEV_SNP_ENABLED BIT_ULL(MSR_AMD64_SEV_SNP_ENABLED_BIT) - -/* SNP feature bits enabled by the hypervisor */ -#define MSR_AMD64_SNP_VTOM BIT_ULL(3) -#define MSR_AMD64_SNP_REFLECT_VC BIT_ULL(4) -#define MSR_AMD64_SNP_RESTRICTED_INJ BIT_ULL(5) -#define MSR_AMD64_SNP_ALT_INJ BIT_ULL(6) -#define MSR_AMD64_SNP_DEBUG_SWAP BIT_ULL(7) -#define MSR_AMD64_SNP_PREVENT_HOST_IBS BIT_ULL(8) -#define MSR_AMD64_SNP_BTB_ISOLATION BIT_ULL(9) -#define MSR_AMD64_SNP_VMPL_SSS BIT_ULL(10) -#define MSR_AMD64_SNP_SECURE_TSC BIT_ULL(11) -#define MSR_AMD64_SNP_VMGEXIT_PARAM BIT_ULL(12) -#define MSR_AMD64_SNP_IBS_VIRT BIT_ULL(14) -#define MSR_AMD64_SNP_VMSA_REG_PROTECTION BIT_ULL(16) -#define MSR_AMD64_SNP_SMT_PROTECTION BIT_ULL(17) - -/* SNP feature bits reserved for future use. */ -#define MSR_AMD64_SNP_RESERVED_BIT13 BIT_ULL(13) -#define MSR_AMD64_SNP_RESERVED_BIT15 BIT_ULL(15) -#define MSR_AMD64_SNP_RESERVED_MASK GENMASK_ULL(63, 18) +#define MSR_AMD64_SNP_VTOM_BIT 3 +#define MSR_AMD64_SNP_VTOM BIT_ULL(MSR_AMD64_SNP_VTOM_BIT) +#define MSR_AMD64_SNP_REFLECT_VC_BIT 4 +#define MSR_AMD64_SNP_REFLECT_VC BIT_ULL(MSR_AMD64_SNP_REFLECT_VC_BIT) +#define MSR_AMD64_SNP_RESTRICTED_INJ_BIT 5 +#define MSR_AMD64_SNP_RESTRICTED_INJ BIT_ULL(MSR_AMD64_SNP_RESTRICTED_INJ_BIT) +#define MSR_AMD64_SNP_ALT_INJ_BIT 6 +#define MSR_AMD64_SNP_ALT_INJ BIT_ULL(MSR_AMD64_SNP_ALT_INJ_BIT) +#define MSR_AMD64_SNP_DEBUG_SWAP_BIT 7 +#define MSR_AMD64_SNP_DEBUG_SWAP BIT_ULL(MSR_AMD64_SNP_DEBUG_SWAP_BIT) +#define MSR_AMD64_SNP_PREVENT_HOST_IBS_BIT 8 +#define MSR_AMD64_SNP_PREVENT_HOST_IBS BIT_ULL(MSR_AMD64_SNP_PREVENT_HOST_IBS_BIT) +#define MSR_AMD64_SNP_BTB_ISOLATION_BIT 9 +#define MSR_AMD64_SNP_BTB_ISOLATION BIT_ULL(MSR_AMD64_SNP_BTB_ISOLATION_BIT) +#define MSR_AMD64_SNP_VMPL_SSS_BIT 10 +#define MSR_AMD64_SNP_VMPL_SSS BIT_ULL(MSR_AMD64_SNP_VMPL_SSS_BIT) +#define MSR_AMD64_SNP_SECURE_TSC_BIT 11 +#define MSR_AMD64_SNP_SECURE_TSC BIT_ULL(MSR_AMD64_SNP_SECURE_TSC_BIT) +#define MSR_AMD64_SNP_VMGEXIT_PARAM_BIT 12 +#define MSR_AMD64_SNP_VMGEXIT_PARAM BIT_ULL(MSR_AMD64_SNP_VMGEXIT_PARAM_BIT) +#define MSR_AMD64_SNP_RESERVED_BIT13 BIT_ULL(13) +#define MSR_AMD64_SNP_IBS_VIRT_BIT 14 +#define MSR_AMD64_SNP_IBS_VIRT BIT_ULL(MSR_AMD64_SNP_IBS_VIRT_BIT) +#define MSR_AMD64_SNP_RESERVED_BIT15 BIT_ULL(15) +#define MSR_AMD64_SNP_VMSA_REG_PROT_BIT 16 +#define MSR_AMD64_SNP_VMSA_REG_PROT BIT_ULL(MSR_AMD64_SNP_VMSA_REG_PROT_BIT) +#define MSR_AMD64_SNP_SMT_PROT_BIT 17 +#define MSR_AMD64_SNP_SMT_PROT BIT_ULL(MSR_AMD64_SNP_SMT_PROT_BIT) +#define MSR_AMD64_SNP_RESV_BIT 18 +#define MSR_AMD64_SNP_RESERVED_MASK GENMASK_ULL(63, MSR_AMD64_SNP_RESV_BIT) #define MSR_AMD64_VIRT_SPEC_CTRL 0xc001011f +#define MSR_AMD64_RMP_BASE 0xc0010132 +#define MSR_AMD64_RMP_END 0xc0010133 + /* AMD Collaborative Processor Performance Control MSRs */ #define MSR_AMD_CPPC_CAP1 0xc00102b0 #define MSR_AMD_CPPC_ENABLE 0xc00102b1 @@ -708,8 +740,15 @@ #define MSR_K8_TOP_MEM1 0xc001001a #define MSR_K8_TOP_MEM2 0xc001001d #define MSR_AMD64_SYSCFG 0xc0010010 -#define MSR_AMD64_SYSCFG_MEM_ENCRYPT_BIT 23 +#define MSR_AMD64_SYSCFG_MEM_ENCRYPT_BIT 23 #define MSR_AMD64_SYSCFG_MEM_ENCRYPT BIT_ULL(MSR_AMD64_SYSCFG_MEM_ENCRYPT_BIT) +#define MSR_AMD64_SYSCFG_SNP_EN_BIT 24 +#define MSR_AMD64_SYSCFG_SNP_EN BIT_ULL(MSR_AMD64_SYSCFG_SNP_EN_BIT) +#define MSR_AMD64_SYSCFG_SNP_VMPL_EN_BIT 25 +#define MSR_AMD64_SYSCFG_SNP_VMPL_EN BIT_ULL(MSR_AMD64_SYSCFG_SNP_VMPL_EN_BIT) +#define MSR_AMD64_SYSCFG_MFDM_BIT 19 +#define MSR_AMD64_SYSCFG_MFDM BIT_ULL(MSR_AMD64_SYSCFG_MFDM_BIT) + #define MSR_K8_INT_PENDING_MSG 0xc0010055 /* C1E active bits in int pending message */ #define K8_INTP_C1E_ACTIVE_MASK 0x18000000 diff --git a/arch/x86/include/asm/msr.h b/arch/x86/include/asm/msr.h index 65ec1965cd28..d642037f9ed5 100644 --- a/arch/x86/include/asm/msr.h +++ b/arch/x86/include/asm/msr.h @@ -12,11 +12,13 @@ #include <uapi/asm/msr.h> #include <asm/shared/msr.h> +#include <linux/percpu.h> + struct msr_info { - u32 msr_no; - struct msr reg; - struct msr *msrs; - int err; + u32 msr_no; + struct msr reg; + struct msr __percpu *msrs; + int err; }; struct msr_regs_info { @@ -97,6 +99,19 @@ static __always_inline void __wrmsr(unsigned int msr, u32 low, u32 high) : : "c" (msr), "a"(low), "d" (high) : "memory"); } +/* + * WRMSRNS behaves exactly like WRMSR with the only difference being + * that it is not a serializing instruction by default. + */ +static __always_inline void __wrmsrns(u32 msr, u32 low, u32 high) +{ + /* Instruction opcode for WRMSRNS; supported in binutils >= 2.40. */ + asm volatile("1: .byte 0x0f,0x01,0xc6\n" + "2:\n" + _ASM_EXTABLE_TYPE(1b, 2b, EX_TYPE_WRMSR) + : : "c" (msr), "a"(low), "d" (high)); +} + #define native_rdmsr(msr, val1, val2) \ do { \ u64 __val = __rdmsr((msr)); \ @@ -297,6 +312,11 @@ do { \ #endif /* !CONFIG_PARAVIRT_XXL */ +static __always_inline void wrmsrns(u32 msr, u64 val) +{ + __wrmsrns(msr, val, val >> 32); +} + /* * 64-bit version of wrmsr_safe(): */ @@ -305,8 +325,8 @@ static inline int wrmsrl_safe(u32 msr, u64 val) return wrmsr_safe(msr, (u32)val, (u32)(val >> 32)); } -struct msr *msrs_alloc(void); -void msrs_free(struct msr *msrs); +struct msr __percpu *msrs_alloc(void); +void msrs_free(struct msr __percpu *msrs); int msr_set_bit(u32 msr, u8 bit); int msr_clear_bit(u32 msr, u8 bit); @@ -315,8 +335,8 @@ int rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h); int wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h); int rdmsrl_on_cpu(unsigned int cpu, u32 msr_no, u64 *q); int wrmsrl_on_cpu(unsigned int cpu, u32 msr_no, u64 q); -void rdmsr_on_cpus(const struct cpumask *mask, u32 msr_no, struct msr *msrs); -void wrmsr_on_cpus(const struct cpumask *mask, u32 msr_no, struct msr *msrs); +void rdmsr_on_cpus(const struct cpumask *mask, u32 msr_no, struct msr __percpu *msrs); +void wrmsr_on_cpus(const struct cpumask *mask, u32 msr_no, struct msr __percpu *msrs); int rdmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h); int wrmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h); int rdmsrl_safe_on_cpu(unsigned int cpu, u32 msr_no, u64 *q); @@ -345,14 +365,14 @@ static inline int wrmsrl_on_cpu(unsigned int cpu, u32 msr_no, u64 q) return 0; } static inline void rdmsr_on_cpus(const struct cpumask *m, u32 msr_no, - struct msr *msrs) + struct msr __percpu *msrs) { - rdmsr_on_cpu(0, msr_no, &(msrs[0].l), &(msrs[0].h)); + rdmsr_on_cpu(0, msr_no, raw_cpu_ptr(&msrs->l), raw_cpu_ptr(&msrs->h)); } static inline void wrmsr_on_cpus(const struct cpumask *m, u32 msr_no, - struct msr *msrs) + struct msr __percpu *msrs) { - wrmsr_on_cpu(0, msr_no, msrs[0].l, msrs[0].h); + wrmsr_on_cpu(0, msr_no, raw_cpu_read(msrs->l), raw_cpu_read(msrs->h)); } static inline int rdmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h) diff --git a/arch/x86/include/asm/nmi.h b/arch/x86/include/asm/nmi.h index 5c5f1e56c404..41a0ebb699ec 100644 --- a/arch/x86/include/asm/nmi.h +++ b/arch/x86/include/asm/nmi.h @@ -14,9 +14,6 @@ extern void release_perfctr_nmi(unsigned int); extern int reserve_evntsel_nmi(unsigned int); extern void release_evntsel_nmi(unsigned int); -struct ctl_table; -extern int proc_nmi_enabled(struct ctl_table *, int , - void __user *, size_t *, loff_t *); extern int unknown_nmi_panic; #endif /* CONFIG_X86_LOCAL_APIC */ diff --git a/arch/x86/include/asm/nospec-branch.h b/arch/x86/include/asm/nospec-branch.h index 262e65539f83..fc3a8a3c7ffe 100644 --- a/arch/x86/include/asm/nospec-branch.h +++ b/arch/x86/include/asm/nospec-branch.h @@ -59,13 +59,13 @@ #ifdef CONFIG_CALL_THUNKS_DEBUG # define CALL_THUNKS_DEBUG_INC_CALLS \ - incq %gs:__x86_call_count; + incq PER_CPU_VAR(__x86_call_count); # define CALL_THUNKS_DEBUG_INC_RETS \ - incq %gs:__x86_ret_count; + incq PER_CPU_VAR(__x86_ret_count); # define CALL_THUNKS_DEBUG_INC_STUFFS \ - incq %gs:__x86_stuffs_count; + incq PER_CPU_VAR(__x86_stuffs_count); # define CALL_THUNKS_DEBUG_INC_CTXSW \ - incq %gs:__x86_ctxsw_count; + incq PER_CPU_VAR(__x86_ctxsw_count); #else # define CALL_THUNKS_DEBUG_INC_CALLS # define CALL_THUNKS_DEBUG_INC_RETS @@ -73,16 +73,13 @@ # define CALL_THUNKS_DEBUG_INC_CTXSW #endif -#if defined(CONFIG_CALL_DEPTH_TRACKING) && !defined(COMPILE_OFFSETS) +#if defined(CONFIG_MITIGATION_CALL_DEPTH_TRACKING) && !defined(COMPILE_OFFSETS) #include <asm/asm-offsets.h> #define CREDIT_CALL_DEPTH \ movq $-1, PER_CPU_VAR(pcpu_hot + X86_call_depth); -#define ASM_CREDIT_CALL_DEPTH \ - movq $-1, PER_CPU_VAR(pcpu_hot + X86_call_depth); - #define RESET_CALL_DEPTH \ xor %eax, %eax; \ bts $63, %rax; \ @@ -95,20 +92,14 @@ CALL_THUNKS_DEBUG_INC_CALLS #define INCREMENT_CALL_DEPTH \ - sarq $5, %gs:pcpu_hot + X86_call_depth; \ - CALL_THUNKS_DEBUG_INC_CALLS - -#define ASM_INCREMENT_CALL_DEPTH \ sarq $5, PER_CPU_VAR(pcpu_hot + X86_call_depth); \ CALL_THUNKS_DEBUG_INC_CALLS #else #define CREDIT_CALL_DEPTH -#define ASM_CREDIT_CALL_DEPTH #define RESET_CALL_DEPTH -#define INCREMENT_CALL_DEPTH -#define ASM_INCREMENT_CALL_DEPTH #define RESET_CALL_DEPTH_FROM_CALL +#define INCREMENT_CALL_DEPTH #endif /* @@ -158,7 +149,7 @@ jnz 771b; \ /* barrier for jnz misprediction */ \ lfence; \ - ASM_CREDIT_CALL_DEPTH \ + CREDIT_CALL_DEPTH \ CALL_THUNKS_DEBUG_INC_CTXSW #else /* @@ -212,7 +203,7 @@ */ .macro VALIDATE_UNRET_END #if defined(CONFIG_NOINSTR_VALIDATION) && \ - (defined(CONFIG_CPU_UNRET_ENTRY) || defined(CONFIG_CPU_SRSO)) + (defined(CONFIG_MITIGATION_UNRET_ENTRY) || defined(CONFIG_MITIGATION_SRSO)) ANNOTATE_RETPOLINE_SAFE nop #endif @@ -241,7 +232,7 @@ * instruction irrespective of kCFI. */ .macro JMP_NOSPEC reg:req -#ifdef CONFIG_RETPOLINE +#ifdef CONFIG_MITIGATION_RETPOLINE __CS_PREFIX \reg jmp __x86_indirect_thunk_\reg #else @@ -251,7 +242,7 @@ .endm .macro CALL_NOSPEC reg:req -#ifdef CONFIG_RETPOLINE +#ifdef CONFIG_MITIGATION_RETPOLINE __CS_PREFIX \reg call __x86_indirect_thunk_\reg #else @@ -271,7 +262,7 @@ .Lskip_rsb_\@: .endm -#if defined(CONFIG_CPU_UNRET_ENTRY) || defined(CONFIG_CPU_SRSO) +#if defined(CONFIG_MITIGATION_UNRET_ENTRY) || defined(CONFIG_MITIGATION_SRSO) #define CALL_UNTRAIN_RET "call entry_untrain_ret" #else #define CALL_UNTRAIN_RET "" @@ -289,7 +280,7 @@ * where we have a stack but before any RET instruction. */ .macro __UNTRAIN_RET ibpb_feature, call_depth_insns -#if defined(CONFIG_RETHUNK) || defined(CONFIG_CPU_IBPB_ENTRY) +#if defined(CONFIG_MITIGATION_RETHUNK) || defined(CONFIG_MITIGATION_IBPB_ENTRY) VALIDATE_UNRET_END ALTERNATIVE_3 "", \ CALL_UNTRAIN_RET, X86_FEATURE_UNRET, \ @@ -309,12 +300,23 @@ .macro CALL_DEPTH_ACCOUNT -#ifdef CONFIG_CALL_DEPTH_TRACKING +#ifdef CONFIG_MITIGATION_CALL_DEPTH_TRACKING ALTERNATIVE "", \ - __stringify(ASM_INCREMENT_CALL_DEPTH), X86_FEATURE_CALL_DEPTH + __stringify(INCREMENT_CALL_DEPTH), X86_FEATURE_CALL_DEPTH #endif .endm +/* + * Macro to execute VERW instruction that mitigate transient data sampling + * attacks such as MDS. On affected systems a microcode update overloaded VERW + * instruction to also clear the CPU buffers. VERW clobbers CFLAGS.ZF. + * + * Note: Only the memory operand variant of VERW clears the CPU buffers. + */ +.macro CLEAR_CPU_BUFFERS + ALTERNATIVE "", __stringify(verw _ASM_RIP(mds_verw_sel)), X86_FEATURE_CLEAR_CPU_BUF +.endm + #else /* __ASSEMBLY__ */ #define ANNOTATE_RETPOLINE_SAFE \ @@ -328,19 +330,19 @@ extern retpoline_thunk_t __x86_indirect_thunk_array[]; extern retpoline_thunk_t __x86_indirect_call_thunk_array[]; extern retpoline_thunk_t __x86_indirect_jump_thunk_array[]; -#ifdef CONFIG_RETHUNK +#ifdef CONFIG_MITIGATION_RETHUNK extern void __x86_return_thunk(void); #else static inline void __x86_return_thunk(void) {} #endif -#ifdef CONFIG_CPU_UNRET_ENTRY +#ifdef CONFIG_MITIGATION_UNRET_ENTRY extern void retbleed_return_thunk(void); #else static inline void retbleed_return_thunk(void) {} #endif -#ifdef CONFIG_CPU_SRSO +#ifdef CONFIG_MITIGATION_SRSO extern void srso_return_thunk(void); extern void srso_alias_return_thunk(void); #else @@ -357,7 +359,9 @@ extern void entry_ibpb(void); extern void (*x86_return_thunk)(void); -#ifdef CONFIG_CALL_DEPTH_TRACKING +extern void __warn_thunk(void); + +#ifdef CONFIG_MITIGATION_CALL_DEPTH_TRACKING extern void call_depth_return_thunk(void); #define CALL_DEPTH_ACCOUNT \ @@ -371,14 +375,14 @@ DECLARE_PER_CPU(u64, __x86_ret_count); DECLARE_PER_CPU(u64, __x86_stuffs_count); DECLARE_PER_CPU(u64, __x86_ctxsw_count); #endif -#else /* !CONFIG_CALL_DEPTH_TRACKING */ +#else /* !CONFIG_MITIGATION_CALL_DEPTH_TRACKING */ static inline void call_depth_return_thunk(void) {} #define CALL_DEPTH_ACCOUNT "" -#endif /* CONFIG_CALL_DEPTH_TRACKING */ +#endif /* CONFIG_MITIGATION_CALL_DEPTH_TRACKING */ -#ifdef CONFIG_RETPOLINE +#ifdef CONFIG_MITIGATION_RETPOLINE #define GEN(reg) \ extern retpoline_thunk_t __x86_indirect_thunk_ ## reg; @@ -399,7 +403,7 @@ static inline void call_depth_return_thunk(void) {} /* * Inline asm uses the %V modifier which is only in newer GCC - * which is ensured when CONFIG_RETPOLINE is defined. + * which is ensured when CONFIG_MITIGATION_RETPOLINE is defined. */ # define CALL_NOSPEC \ ALTERNATIVE_2( \ @@ -529,13 +533,14 @@ DECLARE_STATIC_KEY_FALSE(switch_to_cond_stibp); DECLARE_STATIC_KEY_FALSE(switch_mm_cond_ibpb); DECLARE_STATIC_KEY_FALSE(switch_mm_always_ibpb); -DECLARE_STATIC_KEY_FALSE(mds_user_clear); DECLARE_STATIC_KEY_FALSE(mds_idle_clear); DECLARE_STATIC_KEY_FALSE(switch_mm_cond_l1d_flush); DECLARE_STATIC_KEY_FALSE(mmio_stale_data_clear); +extern u16 mds_verw_sel; + #include <asm/segment.h> /** @@ -562,17 +567,6 @@ static __always_inline void mds_clear_cpu_buffers(void) } /** - * mds_user_clear_cpu_buffers - Mitigation for MDS and TAA vulnerability - * - * Clear CPU buffers if the corresponding static key is enabled - */ -static __always_inline void mds_user_clear_cpu_buffers(void) -{ - if (static_branch_likely(&mds_user_clear)) - mds_clear_cpu_buffers(); -} - -/** * mds_idle_clear_cpu_buffers - Mitigation for MDS vulnerability * * Clear CPU buffers if the corresponding static key is enabled diff --git a/arch/x86/include/asm/page.h b/arch/x86/include/asm/page.h index d18e5c332cb9..1b93ff80b43b 100644 --- a/arch/x86/include/asm/page.h +++ b/arch/x86/include/asm/page.h @@ -66,10 +66,14 @@ static inline void copy_user_page(void *to, void *from, unsigned long vaddr, * virt_addr_valid(kaddr) returns true. */ #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) -#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) extern bool __virt_addr_valid(unsigned long kaddr); #define virt_addr_valid(kaddr) __virt_addr_valid((unsigned long) (kaddr)) +static __always_inline void *pfn_to_kaddr(unsigned long pfn) +{ + return __va(pfn << PAGE_SHIFT); +} + static __always_inline u64 __canonical_address(u64 vaddr, u8 vaddr_bits) { return ((s64)vaddr << (64 - vaddr_bits)) >> (64 - vaddr_bits); diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h index b40c462b4af3..b3ab80a03365 100644 --- a/arch/x86/include/asm/pci.h +++ b/arch/x86/include/asm/pci.h @@ -10,7 +10,6 @@ #include <linux/numa.h> #include <asm/io.h> #include <asm/memtype.h> -#include <asm/x86_init.h> struct pci_sysdata { int domain; /* PCI domain */ @@ -124,16 +123,4 @@ cpumask_of_pcibus(const struct pci_bus *bus) } #endif -struct pci_setup_rom { - struct setup_data data; - uint16_t vendor; - uint16_t devid; - uint64_t pcilen; - unsigned long segment; - unsigned long bus; - unsigned long device; - unsigned long function; - uint8_t romdata[]; -}; - #endif /* _ASM_X86_PCI_H */ diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h index 5e01883eb51e..44958ebaf626 100644 --- a/arch/x86/include/asm/percpu.h +++ b/arch/x86/include/asm/percpu.h @@ -4,17 +4,21 @@ #ifdef CONFIG_X86_64 #define __percpu_seg gs +#define __percpu_rel (%rip) #else #define __percpu_seg fs +#define __percpu_rel #endif #ifdef __ASSEMBLY__ #ifdef CONFIG_SMP -#define PER_CPU_VAR(var) %__percpu_seg:var -#else /* ! SMP */ -#define PER_CPU_VAR(var) var -#endif /* SMP */ +#define __percpu %__percpu_seg: +#else +#define __percpu +#endif + +#define PER_CPU_VAR(var) __percpu(var)__percpu_rel #ifdef CONFIG_X86_64_SMP #define INIT_PER_CPU_VAR(var) init_per_cpu__##var @@ -24,30 +28,84 @@ #else /* ...!ASSEMBLY */ +#include <linux/build_bug.h> #include <linux/stringify.h> #include <asm/asm.h> #ifdef CONFIG_SMP + +#ifdef CONFIG_CC_HAS_NAMED_AS + +#ifdef __CHECKER__ +#define __seg_gs __attribute__((address_space(__seg_gs))) +#define __seg_fs __attribute__((address_space(__seg_fs))) +#endif + +#ifdef CONFIG_X86_64 +#define __percpu_seg_override __seg_gs +#else +#define __percpu_seg_override __seg_fs +#endif + +#define __percpu_prefix "" + +#else /* CONFIG_CC_HAS_NAMED_AS */ + +#define __percpu_seg_override #define __percpu_prefix "%%"__stringify(__percpu_seg)":" + +#endif /* CONFIG_CC_HAS_NAMED_AS */ + +#define __force_percpu_prefix "%%"__stringify(__percpu_seg)":" #define __my_cpu_offset this_cpu_read(this_cpu_off) +#ifdef CONFIG_USE_X86_SEG_SUPPORT +/* + * Efficient implementation for cases in which the compiler supports + * named address spaces. Allows the compiler to perform additional + * optimizations that can save more instructions. + */ +#define arch_raw_cpu_ptr(ptr) \ +({ \ + unsigned long tcp_ptr__; \ + tcp_ptr__ = __raw_cpu_read(, this_cpu_off); \ + \ + tcp_ptr__ += (unsigned long)(ptr); \ + (typeof(*(ptr)) __kernel __force *)tcp_ptr__; \ +}) +#else /* CONFIG_USE_X86_SEG_SUPPORT */ /* * Compared to the generic __my_cpu_offset version, the following * saves one instruction and avoids clobbering a temp register. */ -#define arch_raw_cpu_ptr(ptr) \ -({ \ - unsigned long tcp_ptr__; \ - asm ("add " __percpu_arg(1) ", %0" \ - : "=r" (tcp_ptr__) \ - : "m" (this_cpu_off), "0" (ptr)); \ - (typeof(*(ptr)) __kernel __force *)tcp_ptr__; \ +#define arch_raw_cpu_ptr(ptr) \ +({ \ + unsigned long tcp_ptr__; \ + asm ("mov " __percpu_arg(1) ", %0" \ + : "=r" (tcp_ptr__) \ + : "m" (__my_cpu_var(this_cpu_off))); \ + \ + tcp_ptr__ += (unsigned long)(ptr); \ + (typeof(*(ptr)) __kernel __force *)tcp_ptr__; \ }) -#else +#endif /* CONFIG_USE_X86_SEG_SUPPORT */ + +#define PER_CPU_VAR(var) %__percpu_seg:(var)__percpu_rel + +#else /* CONFIG_SMP */ +#define __percpu_seg_override #define __percpu_prefix "" -#endif +#define __force_percpu_prefix "" + +#define PER_CPU_VAR(var) (var)__percpu_rel +#endif /* CONFIG_SMP */ + +#define __my_cpu_type(var) typeof(var) __percpu_seg_override +#define __my_cpu_ptr(ptr) (__my_cpu_type(*ptr) *)(uintptr_t)(ptr) +#define __my_cpu_var(var) (*__my_cpu_ptr(&var)) #define __percpu_arg(x) __percpu_prefix "%" #x +#define __force_percpu_arg(x) __force_percpu_prefix "%" #x /* * Initialized pointers to per-cpu variables needed for the boot @@ -107,14 +165,14 @@ do { \ (void)pto_tmp__; \ } \ asm qual(__pcpu_op2_##size(op, "%[val]", __percpu_arg([var])) \ - : [var] "+m" (_var) \ + : [var] "+m" (__my_cpu_var(_var)) \ : [val] __pcpu_reg_imm_##size(pto_val__)); \ } while (0) #define percpu_unary_op(size, qual, op, _var) \ ({ \ asm qual (__pcpu_op1_##size(op, __percpu_arg([var])) \ - : [var] "+m" (_var)); \ + : [var] "+m" (__my_cpu_var(_var))); \ }) /* @@ -144,16 +202,16 @@ do { \ __pcpu_type_##size pfo_val__; \ asm qual (__pcpu_op2_##size(op, __percpu_arg([var]), "%[val]") \ : [val] __pcpu_reg_##size("=", pfo_val__) \ - : [var] "m" (_var)); \ + : [var] "m" (__my_cpu_var(_var))); \ (typeof(_var))(unsigned long) pfo_val__; \ }) #define percpu_stable_op(size, op, _var) \ ({ \ __pcpu_type_##size pfo_val__; \ - asm(__pcpu_op2_##size(op, __percpu_arg(P[var]), "%[val]") \ + asm(__pcpu_op2_##size(op, __force_percpu_arg(a[var]), "%[val]") \ : [val] __pcpu_reg_##size("=", pfo_val__) \ - : [var] "p" (&(_var))); \ + : [var] "i" (&(_var))); \ (typeof(_var))(unsigned long) pfo_val__; \ }) @@ -166,7 +224,7 @@ do { \ asm qual (__pcpu_op2_##size("xadd", "%[tmp]", \ __percpu_arg([var])) \ : [tmp] __pcpu_reg_##size("+", paro_tmp__), \ - [var] "+m" (_var) \ + [var] "+m" (__my_cpu_var(_var)) \ : : "memory"); \ (typeof(_var))(unsigned long) (paro_tmp__ + _val); \ }) @@ -187,7 +245,7 @@ do { \ __percpu_arg([var])) \ "\n\tjnz 1b" \ : [oval] "=&a" (pxo_old__), \ - [var] "+m" (_var) \ + [var] "+m" (__my_cpu_var(_var)) \ : [nval] __pcpu_reg_##size(, pxo_new__) \ : "memory"); \ (typeof(_var))(unsigned long) pxo_old__; \ @@ -204,7 +262,7 @@ do { \ asm qual (__pcpu_op2_##size("cmpxchg", "%[nval]", \ __percpu_arg([var])) \ : [oval] "+a" (pco_old__), \ - [var] "+m" (_var) \ + [var] "+m" (__my_cpu_var(_var)) \ : [nval] __pcpu_reg_##size(, pco_new__) \ : "memory"); \ (typeof(_var))(unsigned long) pco_old__; \ @@ -221,7 +279,7 @@ do { \ CC_SET(z) \ : CC_OUT(z) (success), \ [oval] "+a" (pco_old__), \ - [var] "+m" (_var) \ + [var] "+m" (__my_cpu_var(_var)) \ : [nval] __pcpu_reg_##size(, pco_new__) \ : "memory"); \ if (unlikely(!success)) \ @@ -244,7 +302,7 @@ do { \ \ asm qual (ALTERNATIVE("call this_cpu_cmpxchg8b_emu", \ "cmpxchg8b " __percpu_arg([var]), X86_FEATURE_CX8) \ - : [var] "+m" (_var), \ + : [var] "+m" (__my_cpu_var(_var)), \ "+a" (old__.low), \ "+d" (old__.high) \ : "b" (new__.low), \ @@ -276,7 +334,7 @@ do { \ "cmpxchg8b " __percpu_arg([var]), X86_FEATURE_CX8) \ CC_SET(z) \ : CC_OUT(z) (success), \ - [var] "+m" (_var), \ + [var] "+m" (__my_cpu_var(_var)), \ "+a" (old__.low), \ "+d" (old__.high) \ : "b" (new__.low), \ @@ -313,7 +371,7 @@ do { \ \ asm qual (ALTERNATIVE("call this_cpu_cmpxchg16b_emu", \ "cmpxchg16b " __percpu_arg([var]), X86_FEATURE_CX16) \ - : [var] "+m" (_var), \ + : [var] "+m" (__my_cpu_var(_var)), \ "+a" (old__.low), \ "+d" (old__.high) \ : "b" (new__.low), \ @@ -345,7 +403,7 @@ do { \ "cmpxchg16b " __percpu_arg([var]), X86_FEATURE_CX16) \ CC_SET(z) \ : CC_OUT(z) (success), \ - [var] "+m" (_var), \ + [var] "+m" (__my_cpu_var(_var)), \ "+a" (old__.low), \ "+d" (old__.high) \ : "b" (new__.low), \ @@ -366,9 +424,9 @@ do { \ * accessed while this_cpu_read_stable() allows the value to be cached. * this_cpu_read_stable() is more efficient and can be used if its value * is guaranteed to be valid across cpus. The current users include - * get_current() and get_thread_info() both of which are actually - * per-thread variables implemented as per-cpu variables and thus - * stable for the duration of the respective task. + * pcpu_hot.current_task and pcpu_hot.top_of_stack, both of which are + * actually per-thread variables implemented as per-CPU variables and + * thus stable for the duration of the respective task. */ #define this_cpu_read_stable_1(pcp) percpu_stable_op(1, "mov", pcp) #define this_cpu_read_stable_2(pcp) percpu_stable_op(2, "mov", pcp) @@ -376,13 +434,72 @@ do { \ #define this_cpu_read_stable_8(pcp) percpu_stable_op(8, "mov", pcp) #define this_cpu_read_stable(pcp) __pcpu_size_call_return(this_cpu_read_stable_, pcp) +#ifdef CONFIG_USE_X86_SEG_SUPPORT + +#define __raw_cpu_read(qual, pcp) \ +({ \ + *(qual __my_cpu_type(pcp) *)__my_cpu_ptr(&(pcp)); \ +}) + +#define __raw_cpu_write(qual, pcp, val) \ +do { \ + *(qual __my_cpu_type(pcp) *)__my_cpu_ptr(&(pcp)) = (val); \ +} while (0) + +#define raw_cpu_read_1(pcp) __raw_cpu_read(, pcp) +#define raw_cpu_read_2(pcp) __raw_cpu_read(, pcp) +#define raw_cpu_read_4(pcp) __raw_cpu_read(, pcp) +#define raw_cpu_write_1(pcp, val) __raw_cpu_write(, pcp, val) +#define raw_cpu_write_2(pcp, val) __raw_cpu_write(, pcp, val) +#define raw_cpu_write_4(pcp, val) __raw_cpu_write(, pcp, val) + +#define this_cpu_read_1(pcp) __raw_cpu_read(volatile, pcp) +#define this_cpu_read_2(pcp) __raw_cpu_read(volatile, pcp) +#define this_cpu_read_4(pcp) __raw_cpu_read(volatile, pcp) +#define this_cpu_write_1(pcp, val) __raw_cpu_write(volatile, pcp, val) +#define this_cpu_write_2(pcp, val) __raw_cpu_write(volatile, pcp, val) +#define this_cpu_write_4(pcp, val) __raw_cpu_write(volatile, pcp, val) + +#ifdef CONFIG_X86_64 +#define raw_cpu_read_8(pcp) __raw_cpu_read(, pcp) +#define raw_cpu_write_8(pcp, val) __raw_cpu_write(, pcp, val) + +#define this_cpu_read_8(pcp) __raw_cpu_read(volatile, pcp) +#define this_cpu_write_8(pcp, val) __raw_cpu_write(volatile, pcp, val) +#endif + +#define this_cpu_read_const(pcp) __raw_cpu_read(, pcp) +#else /* CONFIG_USE_X86_SEG_SUPPORT */ + #define raw_cpu_read_1(pcp) percpu_from_op(1, , "mov", pcp) #define raw_cpu_read_2(pcp) percpu_from_op(2, , "mov", pcp) #define raw_cpu_read_4(pcp) percpu_from_op(4, , "mov", pcp) - #define raw_cpu_write_1(pcp, val) percpu_to_op(1, , "mov", (pcp), val) #define raw_cpu_write_2(pcp, val) percpu_to_op(2, , "mov", (pcp), val) #define raw_cpu_write_4(pcp, val) percpu_to_op(4, , "mov", (pcp), val) + +#define this_cpu_read_1(pcp) percpu_from_op(1, volatile, "mov", pcp) +#define this_cpu_read_2(pcp) percpu_from_op(2, volatile, "mov", pcp) +#define this_cpu_read_4(pcp) percpu_from_op(4, volatile, "mov", pcp) +#define this_cpu_write_1(pcp, val) percpu_to_op(1, volatile, "mov", (pcp), val) +#define this_cpu_write_2(pcp, val) percpu_to_op(2, volatile, "mov", (pcp), val) +#define this_cpu_write_4(pcp, val) percpu_to_op(4, volatile, "mov", (pcp), val) + +#ifdef CONFIG_X86_64 +#define raw_cpu_read_8(pcp) percpu_from_op(8, , "mov", pcp) +#define raw_cpu_write_8(pcp, val) percpu_to_op(8, , "mov", (pcp), val) + +#define this_cpu_read_8(pcp) percpu_from_op(8, volatile, "mov", pcp) +#define this_cpu_write_8(pcp, val) percpu_to_op(8, volatile, "mov", (pcp), val) +#endif + +/* + * The generic per-cpu infrastrucutre is not suitable for + * reading const-qualified variables. + */ +#define this_cpu_read_const(pcp) ({ BUILD_BUG(); (typeof(pcp))0; }) +#endif /* CONFIG_USE_X86_SEG_SUPPORT */ + #define raw_cpu_add_1(pcp, val) percpu_add_op(1, , (pcp), val) #define raw_cpu_add_2(pcp, val) percpu_add_op(2, , (pcp), val) #define raw_cpu_add_4(pcp, val) percpu_add_op(4, , (pcp), val) @@ -408,12 +525,6 @@ do { \ #define raw_cpu_xchg_2(pcp, val) raw_percpu_xchg_op(pcp, val) #define raw_cpu_xchg_4(pcp, val) raw_percpu_xchg_op(pcp, val) -#define this_cpu_read_1(pcp) percpu_from_op(1, volatile, "mov", pcp) -#define this_cpu_read_2(pcp) percpu_from_op(2, volatile, "mov", pcp) -#define this_cpu_read_4(pcp) percpu_from_op(4, volatile, "mov", pcp) -#define this_cpu_write_1(pcp, val) percpu_to_op(1, volatile, "mov", (pcp), val) -#define this_cpu_write_2(pcp, val) percpu_to_op(2, volatile, "mov", (pcp), val) -#define this_cpu_write_4(pcp, val) percpu_to_op(4, volatile, "mov", (pcp), val) #define this_cpu_add_1(pcp, val) percpu_add_op(1, volatile, (pcp), val) #define this_cpu_add_2(pcp, val) percpu_add_op(2, volatile, (pcp), val) #define this_cpu_add_4(pcp, val) percpu_add_op(4, volatile, (pcp), val) @@ -452,8 +563,6 @@ do { \ * 32 bit must fall back to generic operations. */ #ifdef CONFIG_X86_64 -#define raw_cpu_read_8(pcp) percpu_from_op(8, , "mov", pcp) -#define raw_cpu_write_8(pcp, val) percpu_to_op(8, , "mov", (pcp), val) #define raw_cpu_add_8(pcp, val) percpu_add_op(8, , (pcp), val) #define raw_cpu_and_8(pcp, val) percpu_to_op(8, , "and", (pcp), val) #define raw_cpu_or_8(pcp, val) percpu_to_op(8, , "or", (pcp), val) @@ -462,8 +571,6 @@ do { \ #define raw_cpu_cmpxchg_8(pcp, oval, nval) percpu_cmpxchg_op(8, , pcp, oval, nval) #define raw_cpu_try_cmpxchg_8(pcp, ovalp, nval) percpu_try_cmpxchg_op(8, , pcp, ovalp, nval) -#define this_cpu_read_8(pcp) percpu_from_op(8, volatile, "mov", pcp) -#define this_cpu_write_8(pcp, val) percpu_to_op(8, volatile, "mov", (pcp), val) #define this_cpu_add_8(pcp, val) percpu_add_op(8, volatile, (pcp), val) #define this_cpu_and_8(pcp, val) percpu_to_op(8, volatile, "and", (pcp), val) #define this_cpu_or_8(pcp, val) percpu_to_op(8, volatile, "or", (pcp), val) @@ -494,7 +601,7 @@ static inline bool x86_this_cpu_variable_test_bit(int nr, asm volatile("btl "__percpu_arg(2)",%1" CC_SET(c) : CC_OUT(c) (oldbit) - : "m" (*(unsigned long __percpu *)addr), "Ir" (nr)); + : "m" (*__my_cpu_ptr((unsigned long __percpu *)(addr))), "Ir" (nr)); return oldbit; } diff --git a/arch/x86/include/asm/perf_event_p4.h b/arch/x86/include/asm/perf_event_p4.h index 94de1a05aeba..d65e338b6a5f 100644 --- a/arch/x86/include/asm/perf_event_p4.h +++ b/arch/x86/include/asm/perf_event_p4.h @@ -181,7 +181,7 @@ static inline u64 p4_clear_ht_bit(u64 config) static inline int p4_ht_active(void) { #ifdef CONFIG_SMP - return smp_num_siblings > 1; + return __max_threads_per_core > 1; #endif return 0; } @@ -189,7 +189,7 @@ static inline int p4_ht_active(void) static inline int p4_ht_thread(int cpu) { #ifdef CONFIG_SMP - if (smp_num_siblings == 2) + if (__max_threads_per_core == 2) return cpu != cpumask_first(this_cpu_cpumask_var_ptr(cpu_sibling_map)); #endif return 0; diff --git a/arch/x86/include/asm/pgalloc.h b/arch/x86/include/asm/pgalloc.h index c7ec5bb88334..dcd836b59beb 100644 --- a/arch/x86/include/asm/pgalloc.h +++ b/arch/x86/include/asm/pgalloc.h @@ -34,7 +34,7 @@ static inline void paravirt_release_p4d(unsigned long pfn) {} */ extern gfp_t __userpte_alloc_gfp; -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION /* * Instead of one PGD, we acquire two PGDs. Being order-1, it is * both 8k in size and 8k-aligned. That lets us just flip bit 12 diff --git a/arch/x86/include/asm/pgtable-3level.h b/arch/x86/include/asm/pgtable-3level.h index 9e7c0b719c3c..dabafba957ea 100644 --- a/arch/x86/include/asm/pgtable-3level.h +++ b/arch/x86/include/asm/pgtable-3level.h @@ -52,7 +52,7 @@ static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd) static inline void native_set_pud(pud_t *pudp, pud_t pud) { -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION pud.p4d.pgd = pti_set_user_pgtbl(&pudp->p4d.pgd, pud.p4d.pgd); #endif pxx_xchg64(pud, pudp, native_pud_val(pud)); diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h index 9d077bca6a10..df0f7d4a96f3 100644 --- a/arch/x86/include/asm/pgtable.h +++ b/arch/x86/include/asm/pgtable.h @@ -909,7 +909,7 @@ static inline int is_new_memtype_allowed(u64 paddr, unsigned long size, pmd_t *populate_extra_pmd(unsigned long vaddr); pte_t *populate_extra_pte(unsigned long vaddr); -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION pgd_t __pti_set_user_pgtbl(pgd_t *pgdp, pgd_t pgd); /* @@ -923,12 +923,12 @@ static inline pgd_t pti_set_user_pgtbl(pgd_t *pgdp, pgd_t pgd) return pgd; return __pti_set_user_pgtbl(pgdp, pgd); } -#else /* CONFIG_PAGE_TABLE_ISOLATION */ +#else /* CONFIG_MITIGATION_PAGE_TABLE_ISOLATION */ static inline pgd_t pti_set_user_pgtbl(pgd_t *pgdp, pgd_t pgd) { return pgd; } -#endif /* CONFIG_PAGE_TABLE_ISOLATION */ +#endif /* CONFIG_MITIGATION_PAGE_TABLE_ISOLATION */ #endif /* __ASSEMBLY__ */ @@ -1131,7 +1131,7 @@ static inline int p4d_bad(p4d_t p4d) { unsigned long ignore_flags = _KERNPG_TABLE | _PAGE_USER; - if (IS_ENABLED(CONFIG_PAGE_TABLE_ISOLATION)) + if (IS_ENABLED(CONFIG_MITIGATION_PAGE_TABLE_ISOLATION)) ignore_flags |= _PAGE_NX; return (p4d_flags(p4d) & ~ignore_flags) != 0; @@ -1177,7 +1177,7 @@ static inline int pgd_bad(pgd_t pgd) if (!pgtable_l5_enabled()) return 0; - if (IS_ENABLED(CONFIG_PAGE_TABLE_ISOLATION)) + if (IS_ENABLED(CONFIG_MITIGATION_PAGE_TABLE_ISOLATION)) ignore_flags |= _PAGE_NX; return (pgd_flags(pgd) & ~ignore_flags) != _KERNPG_TABLE; @@ -1422,9 +1422,9 @@ static inline bool pgdp_maps_userspace(void *__ptr) #define pgd_leaf pgd_large static inline int pgd_large(pgd_t pgd) { return 0; } -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION /* - * All top-level PAGE_TABLE_ISOLATION page tables are order-1 pages + * All top-level MITIGATION_PAGE_TABLE_ISOLATION page tables are order-1 pages * (8k-aligned and 8k in size). The kernel one is at the beginning 4k and * the user one is in the last 4k. To switch between them, you * just need to flip the 12th bit in their addresses. @@ -1469,7 +1469,7 @@ static inline p4d_t *user_to_kernel_p4dp(p4d_t *p4dp) { return ptr_clear_bit(p4dp, PTI_PGTABLE_SWITCH_BIT); } -#endif /* CONFIG_PAGE_TABLE_ISOLATION */ +#endif /* CONFIG_MITIGATION_PAGE_TABLE_ISOLATION */ /* * clone_pgd_range(pgd_t *dst, pgd_t *src, int count); @@ -1484,7 +1484,7 @@ static inline p4d_t *user_to_kernel_p4dp(p4d_t *p4dp) static inline void clone_pgd_range(pgd_t *dst, pgd_t *src, int count) { memcpy(dst, src, count * sizeof(pgd_t)); -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION if (!static_cpu_has(X86_FEATURE_PTI)) return; /* Clone the user space pgd as well */ diff --git a/arch/x86/include/asm/pgtable_64.h b/arch/x86/include/asm/pgtable_64.h index 24af25b1551a..7e9db77231ac 100644 --- a/arch/x86/include/asm/pgtable_64.h +++ b/arch/x86/include/asm/pgtable_64.h @@ -143,7 +143,8 @@ static inline void native_set_p4d(p4d_t *p4dp, p4d_t p4d) { pgd_t pgd; - if (pgtable_l5_enabled() || !IS_ENABLED(CONFIG_PAGE_TABLE_ISOLATION)) { + if (pgtable_l5_enabled() || + !IS_ENABLED(CONFIG_MITIGATION_PAGE_TABLE_ISOLATION)) { WRITE_ONCE(*p4dp, p4d); return; } diff --git a/arch/x86/include/asm/pgtable_64_types.h b/arch/x86/include/asm/pgtable_64_types.h index 38b54b992f32..9053dfe9fa03 100644 --- a/arch/x86/include/asm/pgtable_64_types.h +++ b/arch/x86/include/asm/pgtable_64_types.h @@ -21,9 +21,9 @@ typedef unsigned long pgprotval_t; typedef struct { pteval_t pte; } pte_t; typedef struct { pmdval_t pmd; } pmd_t; -#ifdef CONFIG_X86_5LEVEL extern unsigned int __pgtable_l5_enabled; +#ifdef CONFIG_X86_5LEVEL #ifdef USE_EARLY_PGTABLE_L5 /* * cpu_feature_enabled() is not available in early boot code. diff --git a/arch/x86/include/asm/preempt.h b/arch/x86/include/asm/preempt.h index af77235fded6..919909d8cb77 100644 --- a/arch/x86/include/asm/preempt.h +++ b/arch/x86/include/asm/preempt.h @@ -91,7 +91,7 @@ static __always_inline void __preempt_count_sub(int val) */ static __always_inline bool __preempt_count_dec_and_test(void) { - return GEN_UNARY_RMWcc("decl", pcpu_hot.preempt_count, e, + return GEN_UNARY_RMWcc("decl", __my_cpu_var(pcpu_hot.preempt_count), e, __percpu_arg([var])); } diff --git a/arch/x86/include/asm/processor-flags.h b/arch/x86/include/asm/processor-flags.h index d8cccadc83a6..e5f204b9b33d 100644 --- a/arch/x86/include/asm/processor-flags.h +++ b/arch/x86/include/asm/processor-flags.h @@ -51,7 +51,7 @@ #define CR3_NOFLUSH 0 #endif -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION # define X86_CR3_PTI_PCID_USER_BIT 11 #endif diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 26620d7642a9..811548f131f4 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -20,7 +20,6 @@ struct vm86; #include <asm/page.h> #include <asm/pgtable_types.h> #include <asm/percpu.h> -#include <asm/msr.h> #include <asm/desc_defs.h> #include <asm/nops.h> #include <asm/special_insns.h> @@ -100,6 +99,9 @@ struct cpuinfo_topology { u32 logical_pkg_id; u32 logical_die_id; + // AMD Node ID and Nodes per Package info + u32 amd_node_id; + // Cache level topology IDs u32 llc_id; u32 l2c_id; @@ -119,8 +121,6 @@ struct cpuinfo_x86 { #endif __u8 x86_virt_bits; __u8 x86_phys_bits; - /* CPUID returned core id bits: */ - __u8 x86_coreid_bits; /* Max extended CPUID function supported: */ __u32 extended_cpuid_level; /* Maximum supported CPUID level, -1=no CPUID: */ @@ -148,8 +148,6 @@ struct cpuinfo_x86 { unsigned long loops_per_jiffy; /* protected processor identification number */ u64 ppin; - /* cpuid returned max cores value: */ - u16 x86_max_cores; u16 x86_clflush_size; /* number of cores as seen by the OS: */ u16 booted_cores; @@ -186,13 +184,8 @@ extern struct cpuinfo_x86 new_cpu_data; extern __u32 cpu_caps_cleared[NCAPINTS + NBUGINTS]; extern __u32 cpu_caps_set[NCAPINTS + NBUGINTS]; -#ifdef CONFIG_SMP DECLARE_PER_CPU_READ_MOSTLY(struct cpuinfo_x86, cpu_info); #define cpu_data(cpu) per_cpu(cpu_info, cpu) -#else -#define cpu_info boot_cpu_data -#define cpu_data(cpu) boot_cpu_data -#endif extern const struct seq_operations cpuinfo_op; @@ -533,6 +526,9 @@ static __always_inline unsigned long current_top_of_stack(void) * and around vm86 mode and sp0 on x86_64 is special because of the * entry trampoline. */ + if (IS_ENABLED(CONFIG_USE_X86_SEG_SUPPORT)) + return this_cpu_read_const(const_pcpu_hot.top_of_stack); + return this_cpu_read_stable(pcpu_hot.top_of_stack); } @@ -555,7 +551,7 @@ static inline void load_sp0(unsigned long sp0) unsigned long __get_wchan(struct task_struct *p); -extern void select_idle_routine(const struct cpuinfo_x86 *c); +extern void select_idle_routine(void); extern void amd_e400_c1e_apic_setup(void); extern unsigned long boot_option_idle_override; @@ -576,28 +572,6 @@ extern void cpu_init(void); extern void cpu_init_exception_handling(void); extern void cr4_init(void); -static inline unsigned long get_debugctlmsr(void) -{ - unsigned long debugctlmsr = 0; - -#ifndef CONFIG_X86_DEBUGCTLMSR - if (boot_cpu_data.x86 < 6) - return 0; -#endif - rdmsrl(MSR_IA32_DEBUGCTLMSR, debugctlmsr); - - return debugctlmsr; -} - -static inline void update_debugctlmsr(unsigned long debugctlmsr) -{ -#ifndef CONFIG_X86_DEBUGCTLMSR - if (boot_cpu_data.x86 < 6) - return; -#endif - wrmsrl(MSR_IA32_DEBUGCTLMSR, debugctlmsr); -} - extern void set_task_blockstep(struct task_struct *task, bool on); /* Boot loader type from the setup header: */ @@ -664,8 +638,10 @@ static __always_inline void prefetchw(const void *x) #else extern unsigned long __end_init_task[]; -#define INIT_THREAD { \ - .sp = (unsigned long)&__end_init_task - sizeof(struct pt_regs), \ +#define INIT_THREAD { \ + .sp = (unsigned long)&__end_init_task - \ + TOP_OF_KERNEL_STACK_PADDING - \ + sizeof(struct pt_regs), \ } extern unsigned long KSTK_ESP(struct task_struct *task); @@ -704,12 +680,10 @@ static inline u32 per_cpu_l2c_id(unsigned int cpu) } #ifdef CONFIG_CPU_SUP_AMD -extern u32 amd_get_nodes_per_socket(void); extern u32 amd_get_highest_perf(void); extern void amd_clear_divider(void); extern void amd_check_microcode(void); #else -static inline u32 amd_get_nodes_per_socket(void) { return 0; } static inline u32 amd_get_highest_perf(void) { return 0; } static inline void amd_clear_divider(void) { } static inline void amd_check_microcode(void) { } diff --git a/arch/x86/include/asm/prom.h b/arch/x86/include/asm/prom.h index 65dee2420624..043758a2e627 100644 --- a/arch/x86/include/asm/prom.h +++ b/arch/x86/include/asm/prom.h @@ -23,11 +23,11 @@ extern int of_ioapic; extern u64 initial_dtb; extern void add_dtb(u64 data); void x86_of_pci_init(void); -void x86_dtb_init(void); +void x86_dtb_parse_smp_config(void); #else static inline void add_dtb(u64 data) { } static inline void x86_of_pci_init(void) { } -static inline void x86_dtb_init(void) { } +static inline void x86_dtb_parse_smp_config(void) { } #define of_ioapic 0 #endif diff --git a/arch/x86/include/asm/pti.h b/arch/x86/include/asm/pti.h index 07375b476c4f..ab167c96b9ab 100644 --- a/arch/x86/include/asm/pti.h +++ b/arch/x86/include/asm/pti.h @@ -3,7 +3,7 @@ #define _ASM_X86_PTI_H #ifndef __ASSEMBLY__ -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION extern void pti_init(void); extern void pti_check_boottime_disable(void); extern void pti_finalize(void); diff --git a/arch/x86/include/asm/ptrace.h b/arch/x86/include/asm/ptrace.h index f4db78b09c8f..5a83fbd9bc0b 100644 --- a/arch/x86/include/asm/ptrace.h +++ b/arch/x86/include/asm/ptrace.h @@ -56,18 +56,64 @@ struct pt_regs { #else /* __i386__ */ +struct fred_cs { + /* CS selector */ + u64 cs : 16, + /* Stack level at event time */ + sl : 2, + /* IBT in WAIT_FOR_ENDBRANCH state */ + wfe : 1, + : 45; +}; + +struct fred_ss { + /* SS selector */ + u64 ss : 16, + /* STI state */ + sti : 1, + /* Set if syscall, sysenter or INT n */ + swevent : 1, + /* Event is NMI type */ + nmi : 1, + : 13, + /* Event vector */ + vector : 8, + : 8, + /* Event type */ + type : 4, + : 4, + /* Event was incident to enclave execution */ + enclave : 1, + /* CPU was in long mode */ + lm : 1, + /* + * Nested exception during FRED delivery, not set + * for #DF. + */ + nested : 1, + : 1, + /* + * The length of the instruction causing the event. + * Only set for INTO, INT1, INT3, INT n, SYSCALL + * and SYSENTER. 0 otherwise. + */ + insnlen : 4; +}; + struct pt_regs { -/* - * C ABI says these regs are callee-preserved. They aren't saved on kernel entry - * unless syscall needs a complete, fully filled "struct pt_regs". - */ + /* + * C ABI says these regs are callee-preserved. They aren't saved on + * kernel entry unless syscall needs a complete, fully filled + * "struct pt_regs". + */ unsigned long r15; unsigned long r14; unsigned long r13; unsigned long r12; unsigned long bp; unsigned long bx; -/* These regs are callee-clobbered. Always saved on kernel entry. */ + + /* These regs are callee-clobbered. Always saved on kernel entry. */ unsigned long r11; unsigned long r10; unsigned long r9; @@ -77,18 +123,50 @@ struct pt_regs { unsigned long dx; unsigned long si; unsigned long di; -/* - * On syscall entry, this is syscall#. On CPU exception, this is error code. - * On hw interrupt, it's IRQ number: - */ + + /* + * orig_ax is used on entry for: + * - the syscall number (syscall, sysenter, int80) + * - error_code stored by the CPU on traps and exceptions + * - the interrupt number for device interrupts + * + * A FRED stack frame starts here: + * 1) It _always_ includes an error code; + * + * 2) The return frame for ERET[US] starts here, but + * the content of orig_ax is ignored. + */ unsigned long orig_ax; -/* Return frame for iretq */ + + /* The IRETQ return frame starts here */ unsigned long ip; - unsigned long cs; + + union { + /* CS selector */ + u16 cs; + /* The extended 64-bit data slot containing CS */ + u64 csx; + /* The FRED CS extension */ + struct fred_cs fred_cs; + }; + unsigned long flags; unsigned long sp; - unsigned long ss; -/* top of stack page */ + + union { + /* SS selector */ + u16 ss; + /* The extended 64-bit data slot containing SS */ + u64 ssx; + /* The FRED SS extension */ + struct fred_ss fred_ss; + }; + + /* + * Top of stack on IDT systems, while FRED systems have extra fields + * defined above for storing exception related information, e.g. CR2 or + * DR6. + */ }; #endif /* !__i386__ */ diff --git a/arch/x86/include/asm/resctrl.h b/arch/x86/include/asm/resctrl.h index 255a78d9d906..12dbd2588ca7 100644 --- a/arch/x86/include/asm/resctrl.h +++ b/arch/x86/include/asm/resctrl.h @@ -7,6 +7,13 @@ #include <linux/sched.h> #include <linux/jump_label.h> +/* + * This value can never be a valid CLOSID, and is used when mapping a + * (closid, rmid) pair to an index and back. On x86 only the RMID is + * needed. The index is a software defined value. + */ +#define X86_RESCTRL_EMPTY_CLOSID ((u32)~0) + /** * struct resctrl_pqr_state - State cache for the PQR MSR * @cur_rmid: The cached Resource Monitoring ID @@ -31,10 +38,47 @@ struct resctrl_pqr_state { DECLARE_PER_CPU(struct resctrl_pqr_state, pqr_state); +extern bool rdt_alloc_capable; +extern bool rdt_mon_capable; + DECLARE_STATIC_KEY_FALSE(rdt_enable_key); DECLARE_STATIC_KEY_FALSE(rdt_alloc_enable_key); DECLARE_STATIC_KEY_FALSE(rdt_mon_enable_key); +static inline bool resctrl_arch_alloc_capable(void) +{ + return rdt_alloc_capable; +} + +static inline void resctrl_arch_enable_alloc(void) +{ + static_branch_enable_cpuslocked(&rdt_alloc_enable_key); + static_branch_inc_cpuslocked(&rdt_enable_key); +} + +static inline void resctrl_arch_disable_alloc(void) +{ + static_branch_disable_cpuslocked(&rdt_alloc_enable_key); + static_branch_dec_cpuslocked(&rdt_enable_key); +} + +static inline bool resctrl_arch_mon_capable(void) +{ + return rdt_mon_capable; +} + +static inline void resctrl_arch_enable_mon(void) +{ + static_branch_enable_cpuslocked(&rdt_mon_enable_key); + static_branch_inc_cpuslocked(&rdt_enable_key); +} + +static inline void resctrl_arch_disable_mon(void) +{ + static_branch_disable_cpuslocked(&rdt_mon_enable_key); + static_branch_dec_cpuslocked(&rdt_enable_key); +} + /* * __resctrl_sched_in() - Writes the task's CLOSid/RMID to IA32_PQR_MSR * @@ -88,12 +132,58 @@ static inline unsigned int resctrl_arch_round_mon_val(unsigned int val) return val * scale; } +static inline void resctrl_arch_set_closid_rmid(struct task_struct *tsk, + u32 closid, u32 rmid) +{ + WRITE_ONCE(tsk->closid, closid); + WRITE_ONCE(tsk->rmid, rmid); +} + +static inline bool resctrl_arch_match_closid(struct task_struct *tsk, u32 closid) +{ + return READ_ONCE(tsk->closid) == closid; +} + +static inline bool resctrl_arch_match_rmid(struct task_struct *tsk, u32 ignored, + u32 rmid) +{ + return READ_ONCE(tsk->rmid) == rmid; +} + static inline void resctrl_sched_in(struct task_struct *tsk) { if (static_branch_likely(&rdt_enable_key)) __resctrl_sched_in(tsk); } +static inline u32 resctrl_arch_system_num_rmid_idx(void) +{ + /* RMID are independent numbers for x86. num_rmid_idx == num_rmid */ + return boot_cpu_data.x86_cache_max_rmid + 1; +} + +static inline void resctrl_arch_rmid_idx_decode(u32 idx, u32 *closid, u32 *rmid) +{ + *rmid = idx; + *closid = X86_RESCTRL_EMPTY_CLOSID; +} + +static inline u32 resctrl_arch_rmid_idx_encode(u32 ignored, u32 rmid) +{ + return rmid; +} + +/* x86 can always read an rmid, nothing needs allocating */ +struct rdt_resource; +static inline void *resctrl_arch_mon_ctx_alloc(struct rdt_resource *r, int evtid) +{ + might_sleep(); + return NULL; +}; + +static inline void resctrl_arch_mon_ctx_free(struct rdt_resource *r, int evtid, + void *ctx) { }; + void resctrl_cpu_detect(struct cpuinfo_x86 *c); #else diff --git a/arch/x86/include/asm/rmwcc.h b/arch/x86/include/asm/rmwcc.h index 4b081e0d3306..363266cbcada 100644 --- a/arch/x86/include/asm/rmwcc.h +++ b/arch/x86/include/asm/rmwcc.h @@ -13,7 +13,7 @@ #define __GEN_RMWcc(fullop, _var, cc, clobbers, ...) \ ({ \ bool c = false; \ - asm_volatile_goto (fullop "; j" #cc " %l[cc_label]" \ + asm goto (fullop "; j" #cc " %l[cc_label]" \ : : [var] "m" (_var), ## __VA_ARGS__ \ : clobbers : cc_label); \ if (0) { \ diff --git a/arch/x86/include/asm/set_memory.h b/arch/x86/include/asm/set_memory.h index a5e89641bd2d..9aee31862b4a 100644 --- a/arch/x86/include/asm/set_memory.h +++ b/arch/x86/include/asm/set_memory.h @@ -47,6 +47,7 @@ int set_memory_uc(unsigned long addr, int numpages); int set_memory_wc(unsigned long addr, int numpages); int set_memory_wb(unsigned long addr, int numpages); int set_memory_np(unsigned long addr, int numpages); +int set_memory_p(unsigned long addr, int numpages); int set_memory_4k(unsigned long addr, int numpages); int set_memory_encrypted(unsigned long addr, int numpages); int set_memory_decrypted(unsigned long addr, int numpages); diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h index 5c83729c8e71..e61e68d71cba 100644 --- a/arch/x86/include/asm/setup.h +++ b/arch/x86/include/asm/setup.h @@ -48,7 +48,7 @@ extern unsigned long saved_video_mode; extern void reserve_standard_io_resources(void); extern void i386_reserve_resources(void); extern unsigned long __startup_64(unsigned long physaddr, struct boot_params *bp); -extern void startup_64_setup_env(unsigned long physbase); +extern void startup_64_setup_gdt_idt(void); extern void early_setup_idt(void); extern void __init do_early_exception(struct pt_regs *regs, int trapnr); diff --git a/arch/x86/include/asm/setup_data.h b/arch/x86/include/asm/setup_data.h new file mode 100644 index 000000000000..77c51111a893 --- /dev/null +++ b/arch/x86/include/asm/setup_data.h @@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_X86_SETUP_DATA_H +#define _ASM_X86_SETUP_DATA_H + +#include <uapi/asm/setup_data.h> + +#ifndef __ASSEMBLY__ + +struct pci_setup_rom { + struct setup_data data; + uint16_t vendor; + uint16_t devid; + uint64_t pcilen; + unsigned long segment; + unsigned long bus; + unsigned long device; + unsigned long function; + uint8_t romdata[]; +}; + +/* kexec external ABI */ +struct efi_setup_data { + u64 fw_vendor; + u64 __unused; + u64 tables; + u64 smbios; + u64 reserved[8]; +}; + +#endif /* __ASSEMBLY__ */ + +#endif /* _ASM_X86_SETUP_DATA_H */ diff --git a/arch/x86/include/asm/sev.h b/arch/x86/include/asm/sev.h index 5b4a1ce3d368..9477b4053bce 100644 --- a/arch/x86/include/asm/sev.h +++ b/arch/x86/include/asm/sev.h @@ -13,7 +13,6 @@ #include <asm/insn.h> #include <asm/sev-common.h> -#include <asm/bootparam.h> #include <asm/coco.h> #define GHCB_PROTOCOL_MIN 1ULL @@ -22,6 +21,8 @@ #define VMGEXIT() { asm volatile("rep; vmmcall\n\r"); } +struct boot_params; + enum es_result { ES_OK, /* All good */ ES_UNSUPPORTED, /* Requested operation not supported */ @@ -87,9 +88,23 @@ extern bool handle_vc_boot_ghcb(struct pt_regs *regs); /* Software defined (when rFlags.CF = 1) */ #define PVALIDATE_FAIL_NOUPDATE 255 +/* RMUPDATE detected 4K page and 2MB page overlap. */ +#define RMPUPDATE_FAIL_OVERLAP 4 + /* RMP page size */ #define RMP_PG_SIZE_4K 0 #define RMP_PG_SIZE_2M 1 +#define RMP_TO_PG_LEVEL(level) (((level) == RMP_PG_SIZE_4K) ? PG_LEVEL_4K : PG_LEVEL_2M) +#define PG_LEVEL_TO_RMP(level) (((level) == PG_LEVEL_4K) ? RMP_PG_SIZE_4K : RMP_PG_SIZE_2M) + +struct rmp_state { + u64 gpa; + u8 assigned; + u8 pagesize; + u8 immutable; + u8 rsvd; + u32 asid; +} __packed; #define RMPADJUST_VMSA_PAGE_BIT BIT(16) @@ -199,20 +214,22 @@ static inline int pvalidate(unsigned long vaddr, bool rmp_psize, bool validate) struct snp_guest_request_ioctl; void setup_ghcb(void); -void __init early_snp_set_memory_private(unsigned long vaddr, unsigned long paddr, - unsigned long npages); -void __init early_snp_set_memory_shared(unsigned long vaddr, unsigned long paddr, - unsigned long npages); +void early_snp_set_memory_private(unsigned long vaddr, unsigned long paddr, + unsigned long npages); +void early_snp_set_memory_shared(unsigned long vaddr, unsigned long paddr, + unsigned long npages); void __init snp_prep_memory(unsigned long paddr, unsigned int sz, enum psc_op op); void snp_set_memory_shared(unsigned long vaddr, unsigned long npages); void snp_set_memory_private(unsigned long vaddr, unsigned long npages); void snp_set_wakeup_secondary_cpu(void); bool snp_init(struct boot_params *bp); -void __init __noreturn snp_abort(void); +void __noreturn snp_abort(void); int snp_issue_guest_request(u64 exit_code, struct snp_req_data *input, struct snp_guest_request_ioctl *rio); void snp_accept_memory(phys_addr_t start, phys_addr_t end); u64 snp_get_unsupported_features(u64 status); u64 sev_get_status(void); +void kdump_sev_callback(void); +void sev_show_status(void); #else static inline void sev_es_ist_enter(struct pt_regs *regs) { } static inline void sev_es_ist_exit(void) { } @@ -241,6 +258,30 @@ static inline int snp_issue_guest_request(u64 exit_code, struct snp_req_data *in static inline void snp_accept_memory(phys_addr_t start, phys_addr_t end) { } static inline u64 snp_get_unsupported_features(u64 status) { return 0; } static inline u64 sev_get_status(void) { return 0; } +static inline void kdump_sev_callback(void) { } +static inline void sev_show_status(void) { } +#endif + +#ifdef CONFIG_KVM_AMD_SEV +bool snp_probe_rmptable_info(void); +int snp_lookup_rmpentry(u64 pfn, bool *assigned, int *level); +void snp_dump_hva_rmpentry(unsigned long address); +int psmash(u64 pfn); +int rmp_make_private(u64 pfn, u64 gpa, enum pg_level level, u32 asid, bool immutable); +int rmp_make_shared(u64 pfn, enum pg_level level); +void snp_leak_pages(u64 pfn, unsigned int npages); +#else +static inline bool snp_probe_rmptable_info(void) { return false; } +static inline int snp_lookup_rmpentry(u64 pfn, bool *assigned, int *level) { return -ENODEV; } +static inline void snp_dump_hva_rmpentry(unsigned long address) {} +static inline int psmash(u64 pfn) { return -ENODEV; } +static inline int rmp_make_private(u64 pfn, u64 gpa, enum pg_level level, u32 asid, + bool immutable) +{ + return -ENODEV; +} +static inline int rmp_make_shared(u64 pfn, enum pg_level level) { return -ENODEV; } +static inline void snp_leak_pages(u64 pfn, unsigned int npages) {} #endif #endif diff --git a/arch/x86/include/asm/smp.h b/arch/x86/include/asm/smp.h index 4fab2ed454f3..a35936b512fe 100644 --- a/arch/x86/include/asm/smp.h +++ b/arch/x86/include/asm/smp.h @@ -8,9 +8,6 @@ #include <asm/current.h> #include <asm/thread_info.h> -extern int smp_num_siblings; -extern unsigned int num_processors; - DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_sibling_map); DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_core_map); DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_die_map); @@ -59,11 +56,6 @@ static inline void stop_other_cpus(void) smp_ops.stop_other_cpus(1); } -static inline void smp_prepare_boot_cpu(void) -{ - smp_ops.smp_prepare_boot_cpu(); -} - static inline void smp_prepare_cpus(unsigned int max_cpus) { smp_ops.smp_prepare_cpus(max_cpus); @@ -110,7 +102,6 @@ void cpu_disable_common(void); void native_smp_prepare_boot_cpu(void); void smp_prepare_cpus_common(void); void native_smp_prepare_cpus(unsigned int max_cpus); -void calculate_max_logical_packages(void); void native_smp_cpus_done(unsigned int max_cpus); int common_cpu_up(unsigned int cpunum, struct task_struct *tidle); int native_kick_ap(unsigned int cpu, struct task_struct *tidle); @@ -174,8 +165,6 @@ static inline struct cpumask *cpu_llc_shared_mask(int cpu) } #endif /* CONFIG_SMP */ -extern unsigned disabled_cpus; - #ifdef CONFIG_DEBUG_NMI_SELFTEST extern void nmi_selftest(void); #else diff --git a/arch/x86/include/asm/spec-ctrl.h b/arch/x86/include/asm/spec-ctrl.h index c648502e4535..658b690b2ccb 100644 --- a/arch/x86/include/asm/spec-ctrl.h +++ b/arch/x86/include/asm/spec-ctrl.h @@ -96,4 +96,6 @@ static inline void speculative_store_bypass_ht_init(void) { } extern void speculation_ctrl_update(unsigned long tif); extern void speculation_ctrl_update_current(void); +extern bool itlb_multihit_kvm_mitigation; + #endif diff --git a/arch/x86/include/asm/special_insns.h b/arch/x86/include/asm/special_insns.h index d6cd9344f6c7..2e9fc5c400cd 100644 --- a/arch/x86/include/asm/special_insns.h +++ b/arch/x86/include/asm/special_insns.h @@ -2,11 +2,11 @@ #ifndef _ASM_X86_SPECIAL_INSNS_H #define _ASM_X86_SPECIAL_INSNS_H - #ifdef __KERNEL__ - #include <asm/nops.h> #include <asm/processor-flags.h> + +#include <linux/errno.h> #include <linux/irqflags.h> #include <linux/jump_label.h> @@ -205,7 +205,7 @@ static inline void clwb(volatile void *__p) #ifdef CONFIG_X86_USER_SHADOW_STACK static inline int write_user_shstk_64(u64 __user *addr, u64 val) { - asm_volatile_goto("1: wrussq %[val], (%[addr])\n" + asm goto("1: wrussq %[val], (%[addr])\n" _ASM_EXTABLE(1b, %l[fail]) :: [addr] "r" (addr), [val] "r" (val) :: fail); @@ -224,10 +224,10 @@ static inline void serialize(void) } /* The dst parameter must be 64-bytes aligned */ -static inline void movdir64b(void __iomem *dst, const void *src) +static inline void movdir64b(void *dst, const void *src) { const struct { char _[64]; } *__src = src; - struct { char _[64]; } __iomem *__dst = dst; + struct { char _[64]; } *__dst = dst; /* * MOVDIR64B %(rdx), rax. @@ -245,6 +245,11 @@ static inline void movdir64b(void __iomem *dst, const void *src) : "m" (*__src), "a" (__dst), "d" (__src)); } +static inline void movdir64b_io(void __iomem *dst, const void *src) +{ + movdir64b((void __force *)dst, src); +} + /** * enqcmds - Enqueue a command in supervisor (CPL0) mode * @dst: destination, in MMIO space (must be 512-bit aligned) diff --git a/arch/x86/include/asm/static_call.h b/arch/x86/include/asm/static_call.h index 343b722ccaf2..125c407e2abe 100644 --- a/arch/x86/include/asm/static_call.h +++ b/arch/x86/include/asm/static_call.h @@ -46,7 +46,7 @@ #define ARCH_DEFINE_STATIC_CALL_TRAMP(name, func) \ __ARCH_DEFINE_STATIC_CALL_TRAMP(name, ".byte 0xe9; .long " #func " - (. + 4)") -#ifdef CONFIG_RETHUNK +#ifdef CONFIG_MITIGATION_RETHUNK #define ARCH_DEFINE_STATIC_CALL_NULL_TRAMP(name) \ __ARCH_DEFINE_STATIC_CALL_TRAMP(name, "jmp __x86_return_thunk") #else diff --git a/arch/x86/include/asm/switch_to.h b/arch/x86/include/asm/switch_to.h index f42dbf17f52b..c3bd0c0758c9 100644 --- a/arch/x86/include/asm/switch_to.h +++ b/arch/x86/include/asm/switch_to.h @@ -70,9 +70,13 @@ static inline void update_task_stack(struct task_struct *task) #ifdef CONFIG_X86_32 this_cpu_write(cpu_tss_rw.x86_tss.sp1, task->thread.sp0); #else - /* Xen PV enters the kernel on the thread stack. */ - if (cpu_feature_enabled(X86_FEATURE_XENPV)) + if (cpu_feature_enabled(X86_FEATURE_FRED)) { + /* WRMSRNS is a baseline feature for FRED. */ + wrmsrns(MSR_IA32_FRED_RSP0, (unsigned long)task_stack_page(task) + THREAD_SIZE); + } else if (cpu_feature_enabled(X86_FEATURE_XENPV)) { + /* Xen PV enters the kernel on the thread stack. */ load_sp0(task_top_of_stack(task)); + } #endif } diff --git a/arch/x86/include/asm/syscall_wrapper.h b/arch/x86/include/asm/syscall_wrapper.h index 21f9407be5d3..7e88705e907f 100644 --- a/arch/x86/include/asm/syscall_wrapper.h +++ b/arch/x86/include/asm/syscall_wrapper.h @@ -58,12 +58,29 @@ extern long __ia32_sys_ni_syscall(const struct pt_regs *regs); ,,regs->di,,regs->si,,regs->dx \ ,,regs->r10,,regs->r8,,regs->r9) \ + +/* SYSCALL_PT_ARGS is Adapted from s390x */ +#define SYSCALL_PT_ARG6(m, t1, t2, t3, t4, t5, t6) \ + SYSCALL_PT_ARG5(m, t1, t2, t3, t4, t5), m(t6, (regs->bp)) +#define SYSCALL_PT_ARG5(m, t1, t2, t3, t4, t5) \ + SYSCALL_PT_ARG4(m, t1, t2, t3, t4), m(t5, (regs->di)) +#define SYSCALL_PT_ARG4(m, t1, t2, t3, t4) \ + SYSCALL_PT_ARG3(m, t1, t2, t3), m(t4, (regs->si)) +#define SYSCALL_PT_ARG3(m, t1, t2, t3) \ + SYSCALL_PT_ARG2(m, t1, t2), m(t3, (regs->dx)) +#define SYSCALL_PT_ARG2(m, t1, t2) \ + SYSCALL_PT_ARG1(m, t1), m(t2, (regs->cx)) +#define SYSCALL_PT_ARG1(m, t1) m(t1, (regs->bx)) +#define SYSCALL_PT_ARGS(x, ...) SYSCALL_PT_ARG##x(__VA_ARGS__) + +#define __SC_COMPAT_CAST(t, a) \ + (__typeof(__builtin_choose_expr(__TYPE_IS_L(t), 0, 0U))) \ + (unsigned int)a + /* Mapping of registers to parameters for syscalls on i386 */ #define SC_IA32_REGS_TO_ARGS(x, ...) \ - __MAP(x,__SC_ARGS \ - ,,(unsigned int)regs->bx,,(unsigned int)regs->cx \ - ,,(unsigned int)regs->dx,,(unsigned int)regs->si \ - ,,(unsigned int)regs->di,,(unsigned int)regs->bp) + SYSCALL_PT_ARGS(x, __SC_COMPAT_CAST, \ + __MAP(x, __SC_TYPE, __VA_ARGS__)) \ #define __SYS_STUB0(abi, name) \ long __##abi##_##name(const struct pt_regs *regs); \ diff --git a/arch/x86/include/asm/text-patching.h b/arch/x86/include/asm/text-patching.h index 0b70653a98c1..345aafbc1964 100644 --- a/arch/x86/include/asm/text-patching.h +++ b/arch/x86/include/asm/text-patching.h @@ -15,6 +15,8 @@ extern void text_poke_early(void *addr, const void *opcode, size_t len); +extern void apply_relocation(u8 *buf, size_t len, u8 *dest, u8 *src, size_t src_len); + /* * Clear and restore the kernel write-protection flag on the local CPU. * Allows the kernel to edit read-only pages. diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h index d63b02940747..12da7dfd5ef1 100644 --- a/arch/x86/include/asm/thread_info.h +++ b/arch/x86/include/asm/thread_info.h @@ -31,7 +31,9 @@ * In vm86 mode, the hardware frame is much longer still, so add 16 * bytes to make room for the real-mode segments. * - * x86_64 has a fixed-length stack frame. + * x86-64 has a fixed-length stack frame, but it depends on whether + * or not FRED is enabled. Future versions of FRED might make this + * dynamic, but for now it is always 2 words longer. */ #ifdef CONFIG_X86_32 # ifdef CONFIG_VM86 @@ -39,8 +41,12 @@ # else # define TOP_OF_KERNEL_STACK_PADDING 8 # endif -#else -# define TOP_OF_KERNEL_STACK_PADDING 0 +#else /* x86-64 */ +# ifdef CONFIG_X86_FRED +# define TOP_OF_KERNEL_STACK_PADDING (2 * 8) +# else +# define TOP_OF_KERNEL_STACK_PADDING 0 +# endif #endif /* diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h index 5f87f6b9b09e..abe3a8f22cbd 100644 --- a/arch/x86/include/asm/topology.h +++ b/arch/x86/include/asm/topology.h @@ -102,6 +102,35 @@ static inline void setup_node_to_cpumask_map(void) { } #include <asm-generic/topology.h> +/* Topology information */ +enum x86_topology_domains { + TOPO_SMT_DOMAIN, + TOPO_CORE_DOMAIN, + TOPO_MODULE_DOMAIN, + TOPO_TILE_DOMAIN, + TOPO_DIE_DOMAIN, + TOPO_DIEGRP_DOMAIN, + TOPO_PKG_DOMAIN, + TOPO_MAX_DOMAIN, +}; + +struct x86_topology_system { + unsigned int dom_shifts[TOPO_MAX_DOMAIN]; + unsigned int dom_size[TOPO_MAX_DOMAIN]; +}; + +extern struct x86_topology_system x86_topo_system; + +static inline unsigned int topology_get_domain_size(enum x86_topology_domains dom) +{ + return x86_topo_system.dom_size[dom]; +} + +static inline unsigned int topology_get_domain_shift(enum x86_topology_domains dom) +{ + return dom == TOPO_SMT_DOMAIN ? 0 : x86_topo_system.dom_shifts[dom - 1]; +} + extern const struct cpumask *cpu_coregroup_mask(int cpu); extern const struct cpumask *cpu_clustergroup_mask(int cpu); @@ -112,7 +141,42 @@ extern const struct cpumask *cpu_clustergroup_mask(int cpu); #define topology_core_id(cpu) (cpu_data(cpu).topo.core_id) #define topology_ppin(cpu) (cpu_data(cpu).ppin) -extern unsigned int __max_die_per_package; +#define topology_amd_node_id(cpu) (cpu_data(cpu).topo.amd_node_id) + +extern unsigned int __max_dies_per_package; +extern unsigned int __max_logical_packages; +extern unsigned int __max_threads_per_core; +extern unsigned int __num_threads_per_package; +extern unsigned int __num_cores_per_package; + +static inline unsigned int topology_max_packages(void) +{ + return __max_logical_packages; +} + +static inline unsigned int topology_max_dies_per_package(void) +{ + return __max_dies_per_package; +} + +static inline unsigned int topology_num_cores_per_package(void) +{ + return __num_cores_per_package; +} + +static inline unsigned int topology_num_threads_per_package(void) +{ + return __num_threads_per_package; +} + +#ifdef CONFIG_X86_LOCAL_APIC +int topology_get_logical_id(u32 apicid, enum x86_topology_domains at_level); +#else +static inline int topology_get_logical_id(u32 apicid, enum x86_topology_domains at_level) +{ + return 0; +} +#endif #ifdef CONFIG_SMP #define topology_cluster_id(cpu) (cpu_data(cpu).topo.l2c_id) @@ -121,12 +185,11 @@ extern unsigned int __max_die_per_package; #define topology_core_cpumask(cpu) (per_cpu(cpu_core_map, cpu)) #define topology_sibling_cpumask(cpu) (per_cpu(cpu_sibling_map, cpu)) -extern unsigned int __max_logical_packages; -#define topology_max_packages() (__max_logical_packages) -static inline int topology_max_die_per_package(void) +static inline int topology_phys_to_logical_pkg(unsigned int pkg) { - return __max_die_per_package; + return topology_get_logical_id(pkg << x86_topo_system.dom_shifts[TOPO_PKG_DOMAIN], + TOPO_PKG_DOMAIN); } extern int __max_smt_threads; @@ -138,9 +201,12 @@ static inline int topology_max_smt_threads(void) #include <linux/cpu_smt.h> -int topology_update_package_map(unsigned int apicid, unsigned int cpu); -int topology_update_die_map(unsigned int dieid, unsigned int cpu); -int topology_phys_to_logical_pkg(unsigned int pkg); +extern unsigned int __amd_nodes_per_pkg; + +static inline unsigned int topology_amd_nodes_per_pkg(void) +{ + return __amd_nodes_per_pkg; +} extern struct cpumask __cpu_primary_thread_mask; #define cpu_primary_thread_mask ((const struct cpumask *)&__cpu_primary_thread_mask) @@ -153,16 +219,12 @@ static inline bool topology_is_primary_thread(unsigned int cpu) { return cpumask_test_cpu(cpu, cpu_primary_thread_mask); } + #else /* CONFIG_SMP */ -#define topology_max_packages() (1) -static inline int -topology_update_package_map(unsigned int apicid, unsigned int cpu) { return 0; } -static inline int -topology_update_die_map(unsigned int dieid, unsigned int cpu) { return 0; } static inline int topology_phys_to_logical_pkg(unsigned int pkg) { return 0; } -static inline int topology_max_die_per_package(void) { return 1; } static inline int topology_max_smt_threads(void) { return 1; } static inline bool topology_is_primary_thread(unsigned int cpu) { return true; } +static inline unsigned int topology_amd_nodes_per_pkg(void) { return 1; } #endif /* !CONFIG_SMP */ static inline void arch_fix_phys_package_id(int num, u32 slot) diff --git a/arch/x86/include/asm/trap_pf.h b/arch/x86/include/asm/trap_pf.h index afa524325e55..a23a7b707b64 100644 --- a/arch/x86/include/asm/trap_pf.h +++ b/arch/x86/include/asm/trap_pf.h @@ -2,6 +2,8 @@ #ifndef _ASM_X86_TRAP_PF_H #define _ASM_X86_TRAP_PF_H +#include <linux/bits.h> + /* * Page fault error code bits: * @@ -13,16 +15,18 @@ * bit 5 == 1: protection keys block access * bit 6 == 1: shadow stack access fault * bit 15 == 1: SGX MMU page-fault + * bit 31 == 1: fault was due to RMP violation */ enum x86_pf_error_code { - X86_PF_PROT = 1 << 0, - X86_PF_WRITE = 1 << 1, - X86_PF_USER = 1 << 2, - X86_PF_RSVD = 1 << 3, - X86_PF_INSTR = 1 << 4, - X86_PF_PK = 1 << 5, - X86_PF_SHSTK = 1 << 6, - X86_PF_SGX = 1 << 15, + X86_PF_PROT = BIT(0), + X86_PF_WRITE = BIT(1), + X86_PF_USER = BIT(2), + X86_PF_RSVD = BIT(3), + X86_PF_INSTR = BIT(4), + X86_PF_PK = BIT(5), + X86_PF_SHSTK = BIT(6), + X86_PF_SGX = BIT(15), + X86_PF_RMP = BIT(31), }; #endif /* _ASM_X86_TRAP_PF_H */ diff --git a/arch/x86/include/asm/trapnr.h b/arch/x86/include/asm/trapnr.h index f5d2325aa0b7..8d1154cdf787 100644 --- a/arch/x86/include/asm/trapnr.h +++ b/arch/x86/include/asm/trapnr.h @@ -2,6 +2,18 @@ #ifndef _ASM_X86_TRAPNR_H #define _ASM_X86_TRAPNR_H +/* + * Event type codes used by FRED, Intel VT-x and AMD SVM + */ +#define EVENT_TYPE_EXTINT 0 // External interrupt +#define EVENT_TYPE_RESERVED 1 +#define EVENT_TYPE_NMI 2 // NMI +#define EVENT_TYPE_HWEXC 3 // Hardware originated traps, exceptions +#define EVENT_TYPE_SWINT 4 // INT n +#define EVENT_TYPE_PRIV_SWEXC 5 // INT1 +#define EVENT_TYPE_SWEXC 6 // INTO, INT3 +#define EVENT_TYPE_OTHER 7 // FRED SYSCALL/SYSENTER, VT-x MTF + /* Interrupts/Exceptions */ #define X86_TRAP_DE 0 /* Divide-by-zero */ diff --git a/arch/x86/include/asm/tsc.h b/arch/x86/include/asm/tsc.h index 594fce0ca744..405efb3e4996 100644 --- a/arch/x86/include/asm/tsc.h +++ b/arch/x86/include/asm/tsc.h @@ -5,8 +5,9 @@ #ifndef _ASM_X86_TSC_H #define _ASM_X86_TSC_H -#include <asm/processor.h> #include <asm/cpufeature.h> +#include <asm/processor.h> +#include <asm/msr.h> /* * Standard way to access the cycle counter. diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h index 5c367c1290c3..237dc8cdd12b 100644 --- a/arch/x86/include/asm/uaccess.h +++ b/arch/x86/include/asm/uaccess.h @@ -133,7 +133,7 @@ extern int __get_user_bad(void); #ifdef CONFIG_X86_32 #define __put_user_goto_u64(x, addr, label) \ - asm_volatile_goto("\n" \ + asm goto("\n" \ "1: movl %%eax,0(%1)\n" \ "2: movl %%edx,4(%1)\n" \ _ASM_EXTABLE_UA(1b, %l2) \ @@ -295,7 +295,7 @@ do { \ } while (0) #define __get_user_asm(x, addr, itype, ltype, label) \ - asm_volatile_goto("\n" \ + asm_goto_output("\n" \ "1: mov"itype" %[umem],%[output]\n" \ _ASM_EXTABLE_UA(1b, %l2) \ : [output] ltype(x) \ @@ -375,7 +375,7 @@ do { \ __typeof__(_ptr) _old = (__typeof__(_ptr))(_pold); \ __typeof__(*(_ptr)) __old = *_old; \ __typeof__(*(_ptr)) __new = (_new); \ - asm_volatile_goto("\n" \ + asm_goto_output("\n" \ "1: " LOCK_PREFIX "cmpxchg"itype" %[new], %[ptr]\n"\ _ASM_EXTABLE_UA(1b, %l[label]) \ : CC_OUT(z) (success), \ @@ -394,7 +394,7 @@ do { \ __typeof__(_ptr) _old = (__typeof__(_ptr))(_pold); \ __typeof__(*(_ptr)) __old = *_old; \ __typeof__(*(_ptr)) __new = (_new); \ - asm_volatile_goto("\n" \ + asm_goto_output("\n" \ "1: " LOCK_PREFIX "cmpxchg8b %[ptr]\n" \ _ASM_EXTABLE_UA(1b, %l[label]) \ : CC_OUT(z) (success), \ @@ -477,7 +477,7 @@ struct __large_struct { unsigned long buf[100]; }; * aliasing issues. */ #define __put_user_goto(x, addr, itype, ltype, label) \ - asm_volatile_goto("\n" \ + asm goto("\n" \ "1: mov"itype" %0,%1\n" \ _ASM_EXTABLE_UA(1b, %l2) \ : : ltype(x), "m" (__m(addr)) \ diff --git a/arch/x86/include/asm/uaccess_64.h b/arch/x86/include/asm/uaccess_64.h index f2c02e4469cc..04789f45ab2b 100644 --- a/arch/x86/include/asm/uaccess_64.h +++ b/arch/x86/include/asm/uaccess_64.h @@ -11,6 +11,7 @@ #include <asm/alternative.h> #include <asm/cpufeatures.h> #include <asm/page.h> +#include <asm/percpu.h> #ifdef CONFIG_ADDRESS_MASKING /* @@ -18,14 +19,10 @@ */ static inline unsigned long __untagged_addr(unsigned long addr) { - /* - * Refer tlbstate_untag_mask directly to avoid RIP-relative relocation - * in alternative instructions. The relocation gets wrong when gets - * copied to the target place. - */ asm (ALTERNATIVE("", - "and %%gs:tlbstate_untag_mask, %[addr]\n\t", X86_FEATURE_LAM) - : [addr] "+r" (addr) : "m" (tlbstate_untag_mask)); + "and " __percpu_arg([mask]) ", %[addr]", X86_FEATURE_LAM) + : [addr] "+r" (addr) + : [mask] "m" (__my_cpu_var(tlbstate_untag_mask))); return addr; } @@ -54,7 +51,7 @@ static inline unsigned long __untagged_addr_remote(struct mm_struct *mm, * half and a user half. When cast to a signed type, user pointers * are positive and kernel pointers are negative. */ -#define valid_user_address(x) ((long)(x) >= 0) +#define valid_user_address(x) ((__force long)(x) >= 0) /* * User pointers can have tag bits on x86-64. This scheme tolerates @@ -87,8 +84,9 @@ static inline bool __access_ok(const void __user *ptr, unsigned long size) if (__builtin_constant_p(size <= PAGE_SIZE) && size <= PAGE_SIZE) { return valid_user_address(ptr); } else { - unsigned long sum = size + (unsigned long)ptr; - return valid_user_address(sum) && sum >= (unsigned long)ptr; + unsigned long sum = size + (__force unsigned long)ptr; + + return valid_user_address(sum) && sum >= (__force unsigned long)ptr; } } #define __access_ok __access_ok diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h index 0e73616b82f3..4dba17363008 100644 --- a/arch/x86/include/asm/vmx.h +++ b/arch/x86/include/asm/vmx.h @@ -17,6 +17,7 @@ #include <linux/types.h> #include <uapi/asm/vmx.h> +#include <asm/trapnr.h> #include <asm/vmxfeatures.h> #define VMCS_CONTROL_BIT(x) BIT(VMX_FEATURE_##x & 0x1f) @@ -374,14 +375,14 @@ enum vmcs_field { #define VECTORING_INFO_DELIVER_CODE_MASK INTR_INFO_DELIVER_CODE_MASK #define VECTORING_INFO_VALID_MASK INTR_INFO_VALID_MASK -#define INTR_TYPE_EXT_INTR (0 << 8) /* external interrupt */ -#define INTR_TYPE_RESERVED (1 << 8) /* reserved */ -#define INTR_TYPE_NMI_INTR (2 << 8) /* NMI */ -#define INTR_TYPE_HARD_EXCEPTION (3 << 8) /* processor exception */ -#define INTR_TYPE_SOFT_INTR (4 << 8) /* software interrupt */ -#define INTR_TYPE_PRIV_SW_EXCEPTION (5 << 8) /* ICE breakpoint - undocumented */ -#define INTR_TYPE_SOFT_EXCEPTION (6 << 8) /* software exception */ -#define INTR_TYPE_OTHER_EVENT (7 << 8) /* other event */ +#define INTR_TYPE_EXT_INTR (EVENT_TYPE_EXTINT << 8) /* external interrupt */ +#define INTR_TYPE_RESERVED (EVENT_TYPE_RESERVED << 8) /* reserved */ +#define INTR_TYPE_NMI_INTR (EVENT_TYPE_NMI << 8) /* NMI */ +#define INTR_TYPE_HARD_EXCEPTION (EVENT_TYPE_HWEXC << 8) /* processor exception */ +#define INTR_TYPE_SOFT_INTR (EVENT_TYPE_SWINT << 8) /* software interrupt */ +#define INTR_TYPE_PRIV_SW_EXCEPTION (EVENT_TYPE_PRIV_SWEXC << 8) /* ICE breakpoint */ +#define INTR_TYPE_SOFT_EXCEPTION (EVENT_TYPE_SWEXC << 8) /* software exception */ +#define INTR_TYPE_OTHER_EVENT (EVENT_TYPE_OTHER << 8) /* other event */ /* GUEST_INTERRUPTIBILITY_INFO flags. */ #define GUEST_INTR_STATE_STI 0x00000001 diff --git a/arch/x86/include/asm/vsyscall.h b/arch/x86/include/asm/vsyscall.h index ab60a71a8dcb..472f0263dbc6 100644 --- a/arch/x86/include/asm/vsyscall.h +++ b/arch/x86/include/asm/vsyscall.h @@ -4,6 +4,7 @@ #include <linux/seqlock.h> #include <uapi/asm/vsyscall.h> +#include <asm/page_types.h> #ifdef CONFIG_X86_VSYSCALL_EMULATION extern void map_vsyscall(void); @@ -24,4 +25,13 @@ static inline bool emulate_vsyscall(unsigned long error_code, } #endif +/* + * The (legacy) vsyscall page is the long page in the kernel portion + * of the address space that has user-accessible permissions. + */ +static inline bool is_vsyscall_vaddr(unsigned long vaddr) +{ + return unlikely((vaddr & PAGE_MASK) == VSYSCALL_ADDR); +} + #endif /* _ASM_X86_VSYSCALL_H */ diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h index c878616a18b8..b89b40f250e6 100644 --- a/arch/x86/include/asm/x86_init.h +++ b/arch/x86/include/asm/x86_init.h @@ -2,8 +2,6 @@ #ifndef _ASM_X86_PLATFORM_H #define _ASM_X86_PLATFORM_H -#include <asm/bootparam.h> - struct ghcb; struct mpc_bus; struct mpc_cpu; @@ -15,13 +13,15 @@ struct irq_domain; /** * struct x86_init_mpparse - platform specific mpparse ops * @setup_ioapic_ids: platform specific ioapic id override - * @find_smp_config: find the smp configuration - * @get_smp_config: get the smp configuration + * @find_mptable: Find MPTABLE early to reserve the memory region + * @early_parse_smp_cfg: Parse the SMP configuration data early before initmem_init() + * @parse_smp_cfg: Parse the SMP configuration data */ struct x86_init_mpparse { void (*setup_ioapic_ids)(void); - void (*find_smp_config)(void); - void (*get_smp_config)(unsigned int early); + void (*find_mptable)(void); + void (*early_parse_smp_cfg)(void); + void (*parse_smp_cfg)(void); }; /** diff --git a/arch/x86/include/uapi/asm/bootparam.h b/arch/x86/include/uapi/asm/bootparam.h index 01d19fc22346..9b82eebd7add 100644 --- a/arch/x86/include/uapi/asm/bootparam.h +++ b/arch/x86/include/uapi/asm/bootparam.h @@ -2,21 +2,7 @@ #ifndef _ASM_X86_BOOTPARAM_H #define _ASM_X86_BOOTPARAM_H -/* setup_data/setup_indirect types */ -#define SETUP_NONE 0 -#define SETUP_E820_EXT 1 -#define SETUP_DTB 2 -#define SETUP_PCI 3 -#define SETUP_EFI 4 -#define SETUP_APPLE_PROPERTIES 5 -#define SETUP_JAILHOUSE 6 -#define SETUP_CC_BLOB 7 -#define SETUP_IMA 8 -#define SETUP_RNG_SEED 9 -#define SETUP_ENUM_MAX SETUP_RNG_SEED - -#define SETUP_INDIRECT (1<<31) -#define SETUP_TYPE_MAX (SETUP_ENUM_MAX | SETUP_INDIRECT) +#include <asm/setup_data.h> /* ram_size flags */ #define RAMDISK_IMAGE_START_MASK 0x07FF @@ -38,6 +24,7 @@ #define XLF_EFI_KEXEC (1<<4) #define XLF_5LEVEL (1<<5) #define XLF_5LEVEL_ENABLED (1<<6) +#define XLF_MEM_ENCRYPTION (1<<7) #ifndef __ASSEMBLY__ @@ -48,22 +35,6 @@ #include <asm/ist.h> #include <video/edid.h> -/* extensible setup data list node */ -struct setup_data { - __u64 next; - __u32 type; - __u32 len; - __u8 data[]; -}; - -/* extensible setup indirect data node */ -struct setup_indirect { - __u32 type; - __u32 reserved; /* Reserved, must be set to zero. */ - __u64 len; - __u64 addr; -}; - struct setup_header { __u8 setup_sects; __u16 root_flags; @@ -137,50 +108,10 @@ struct efi_info { #define E820_MAX_ENTRIES_ZEROPAGE 128 /* - * The E820 memory region entry of the boot protocol ABI: - */ -struct boot_e820_entry { - __u64 addr; - __u64 size; - __u32 type; -} __attribute__((packed)); - -/* * Smallest compatible version of jailhouse_setup_data required by this kernel. */ #define JAILHOUSE_SETUP_REQUIRED_VERSION 1 -/* - * The boot loader is passing platform information via this Jailhouse-specific - * setup data structure. - */ -struct jailhouse_setup_data { - struct { - __u16 version; - __u16 compatible_version; - } __attribute__((packed)) hdr; - struct { - __u16 pm_timer_address; - __u16 num_cpus; - __u64 pci_mmconfig_base; - __u32 tsc_khz; - __u32 apic_khz; - __u8 standard_ioapic; - __u8 cpu_ids[255]; - } __attribute__((packed)) v1; - struct { - __u32 flags; - } __attribute__((packed)) v2; -} __attribute__((packed)); - -/* - * IMA buffer setup data information from the previous kernel during kexec - */ -struct ima_setup_data { - __u64 addr; - __u64 size; -} __attribute__((packed)); - /* The so-called "zeropage" */ struct boot_params { struct screen_info screen_info; /* 0x000 */ diff --git a/arch/x86/include/uapi/asm/processor-flags.h b/arch/x86/include/uapi/asm/processor-flags.h index d898432947ff..f1a4adc78272 100644 --- a/arch/x86/include/uapi/asm/processor-flags.h +++ b/arch/x86/include/uapi/asm/processor-flags.h @@ -139,6 +139,13 @@ #define X86_CR4_LAM_SUP_BIT 28 /* LAM for supervisor pointers */ #define X86_CR4_LAM_SUP _BITUL(X86_CR4_LAM_SUP_BIT) +#ifdef __x86_64__ +#define X86_CR4_FRED_BIT 32 /* enable FRED kernel entry */ +#define X86_CR4_FRED _BITUL(X86_CR4_FRED_BIT) +#else +#define X86_CR4_FRED (0) +#endif + /* * x86-64 Task Priority Register, CR8 */ diff --git a/arch/x86/include/uapi/asm/setup_data.h b/arch/x86/include/uapi/asm/setup_data.h new file mode 100644 index 000000000000..b111b0c18544 --- /dev/null +++ b/arch/x86/include/uapi/asm/setup_data.h @@ -0,0 +1,83 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +#ifndef _UAPI_ASM_X86_SETUP_DATA_H +#define _UAPI_ASM_X86_SETUP_DATA_H + +/* setup_data/setup_indirect types */ +#define SETUP_NONE 0 +#define SETUP_E820_EXT 1 +#define SETUP_DTB 2 +#define SETUP_PCI 3 +#define SETUP_EFI 4 +#define SETUP_APPLE_PROPERTIES 5 +#define SETUP_JAILHOUSE 6 +#define SETUP_CC_BLOB 7 +#define SETUP_IMA 8 +#define SETUP_RNG_SEED 9 +#define SETUP_ENUM_MAX SETUP_RNG_SEED + +#define SETUP_INDIRECT (1<<31) +#define SETUP_TYPE_MAX (SETUP_ENUM_MAX | SETUP_INDIRECT) + +#ifndef __ASSEMBLY__ + +#include <linux/types.h> + +/* extensible setup data list node */ +struct setup_data { + __u64 next; + __u32 type; + __u32 len; + __u8 data[]; +}; + +/* extensible setup indirect data node */ +struct setup_indirect { + __u32 type; + __u32 reserved; /* Reserved, must be set to zero. */ + __u64 len; + __u64 addr; +}; + +/* + * The E820 memory region entry of the boot protocol ABI: + */ +struct boot_e820_entry { + __u64 addr; + __u64 size; + __u32 type; +} __attribute__((packed)); + +/* + * The boot loader is passing platform information via this Jailhouse-specific + * setup data structure. + */ +struct jailhouse_setup_data { + struct { + __u16 version; + __u16 compatible_version; + } __attribute__((packed)) hdr; + struct { + __u16 pm_timer_address; + __u16 num_cpus; + __u64 pci_mmconfig_base; + __u32 tsc_khz; + __u32 apic_khz; + __u8 standard_ioapic; + __u8 cpu_ids[255]; + } __attribute__((packed)) v1; + struct { + __u32 flags; + } __attribute__((packed)) v2; +} __attribute__((packed)); + +/* + * IMA buffer setup data information from the previous kernel during kexec + */ +struct ima_setup_data { + __u64 addr; + __u64 size; +} __attribute__((packed)); + +#endif /* __ASSEMBLY__ */ + +#endif /* _UAPI_ASM_X86_SETUP_DATA_H */ diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile index 0000325ab98f..d0c744cb2a0e 100644 --- a/arch/x86/kernel/Makefile +++ b/arch/x86/kernel/Makefile @@ -33,6 +33,7 @@ KASAN_SANITIZE_sev.o := n KCSAN_SANITIZE := n KMSAN_SANITIZE_head$(BITS).o := n KMSAN_SANITIZE_nmi.o := n +KMSAN_SANITIZE_sev.o := n # If instrumentation of the following files is enabled, boot hangs during # first second. @@ -48,6 +49,7 @@ obj-y += platform-quirks.o obj-y += process_$(BITS).o signal.o signal_$(BITS).o obj-y += traps.o idt.o irq.o irq_$(BITS).o dumpstack_$(BITS).o obj-y += time.o ioport.o dumpstack.o nmi.o +obj-$(CONFIG_X86_FRED) += fred.o obj-$(CONFIG_MODIFY_LDT_SYSCALL) += ldt.o obj-$(CONFIG_X86_KERNEL_IBT) += ibt_selftest.o obj-y += setup.o x86_init.o i8259.o irqinit.o diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index 85a3ce2a3666..4bf82dbd2a6b 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -164,35 +164,6 @@ static int __init acpi_parse_madt(struct acpi_table_header *table) return 0; } -/** - * acpi_register_lapic - register a local apic and generates a logic cpu number - * @id: local apic id to register - * @acpiid: ACPI id to register - * @enabled: this cpu is enabled or not - * - * Returns the logic cpu number which maps to the local apic - */ -static int acpi_register_lapic(int id, u32 acpiid, u8 enabled) -{ - int cpu; - - if (id >= MAX_LOCAL_APIC) { - pr_info("skipped apicid that is too big\n"); - return -EINVAL; - } - - if (!enabled) { - ++disabled_cpus; - return -EINVAL; - } - - cpu = generic_processor_info(id); - if (cpu >= 0) - early_per_cpu(x86_cpu_to_acpiid, cpu) = acpiid; - - return cpu; -} - static bool __init acpi_is_processor_usable(u32 lapic_flags) { if (lapic_flags & ACPI_MADT_ENABLED) @@ -254,7 +225,7 @@ acpi_parse_x2apic(union acpi_subtable_headers *header, const unsigned long end) return 0; } - acpi_register_lapic(apic_id, processor->uid, enabled); + topology_register_apic(apic_id, processor->uid, enabled); #else pr_warn("x2apic entry ignored\n"); #endif @@ -289,9 +260,9 @@ acpi_parse_lapic(union acpi_subtable_headers * header, const unsigned long end) * to not preallocating memory for all NR_CPUS * when we use CPU hotplug. */ - acpi_register_lapic(processor->id, /* APIC ID */ - processor->processor_id, /* ACPI ID */ - processor->lapic_flags & ACPI_MADT_ENABLED); + topology_register_apic(processor->id, /* APIC ID */ + processor->processor_id, /* ACPI ID */ + processor->lapic_flags & ACPI_MADT_ENABLED); has_lapic_cpus = true; return 0; @@ -309,9 +280,9 @@ acpi_parse_sapic(union acpi_subtable_headers *header, const unsigned long end) acpi_table_print_madt_entry(&header->common); - acpi_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */ - processor->processor_id, /* ACPI ID */ - processor->lapic_flags & ACPI_MADT_ENABLED); + topology_register_apic((processor->id << 8) | processor->eid,/* APIC ID */ + processor->processor_id, /* ACPI ID */ + processor->lapic_flags & ACPI_MADT_ENABLED); return 0; } @@ -844,12 +815,10 @@ static int acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) return 0; } -int acpi_map_cpu(acpi_handle handle, phys_cpuid_t physid, u32 acpi_id, - int *pcpu) +int acpi_map_cpu(acpi_handle handle, phys_cpuid_t physid, u32 acpi_id, int *pcpu) { - int cpu; + int cpu = topology_hotplug_apic(physid, acpi_id); - cpu = acpi_register_lapic(physid, acpi_id, ACPI_MADT_ENABLED); if (cpu < 0) { pr_info("Unable to map lapic to logical cpu number\n"); return cpu; @@ -868,15 +837,11 @@ int acpi_unmap_cpu(int cpu) #ifdef CONFIG_ACPI_NUMA set_apicid_to_node(per_cpu(x86_cpu_to_apicid, cpu), NUMA_NO_NODE); #endif - - per_cpu(x86_cpu_to_apicid, cpu) = BAD_APICID; - set_cpu_present(cpu, false); - num_processors--; - - return (0); + topology_hotunplug_apic(cpu); + return 0; } EXPORT_SYMBOL(acpi_unmap_cpu); -#endif /* CONFIG_ACPI_HOTPLUG_CPU */ +#endif /* CONFIG_ACPI_HOTPLUG_CPU */ int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) { diff --git a/arch/x86/kernel/acpi/wakeup_64.S b/arch/x86/kernel/acpi/wakeup_64.S index d5d8a352eafa..94ff83f3d3fe 100644 --- a/arch/x86/kernel/acpi/wakeup_64.S +++ b/arch/x86/kernel/acpi/wakeup_64.S @@ -17,7 +17,7 @@ * Hooray, we are in Long 64-bit mode (but still running in low memory) */ SYM_FUNC_START(wakeup_long64) - movq saved_magic, %rax + movq saved_magic(%rip), %rax movq $0x123456789abcdef0, %rdx cmpq %rdx, %rax je 2f @@ -33,14 +33,14 @@ SYM_FUNC_START(wakeup_long64) movw %ax, %es movw %ax, %fs movw %ax, %gs - movq saved_rsp, %rsp + movq saved_rsp(%rip), %rsp - movq saved_rbx, %rbx - movq saved_rdi, %rdi - movq saved_rsi, %rsi - movq saved_rbp, %rbp + movq saved_rbx(%rip), %rbx + movq saved_rdi(%rip), %rdi + movq saved_rsi(%rip), %rsi + movq saved_rbp(%rip), %rbp - movq saved_rip, %rax + movq saved_rip(%rip), %rax ANNOTATE_RETPOLINE_SAFE jmp *%rax SYM_FUNC_END(wakeup_long64) @@ -72,11 +72,11 @@ SYM_FUNC_START(do_suspend_lowlevel) movq $.Lresume_point, saved_rip(%rip) - movq %rsp, saved_rsp - movq %rbp, saved_rbp - movq %rbx, saved_rbx - movq %rdi, saved_rdi - movq %rsi, saved_rsi + movq %rsp, saved_rsp(%rip) + movq %rbp, saved_rbp(%rip) + movq %rbx, saved_rbx(%rip) + movq %rdi, saved_rdi(%rip) + movq %rsi, saved_rsi(%rip) addq $8, %rsp movl $3, %edi diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c index cc130b57542a..ff6e32ec8259 100644 --- a/arch/x86/kernel/alternative.c +++ b/arch/x86/kernel/alternative.c @@ -45,7 +45,7 @@ EXPORT_SYMBOL_GPL(alternatives_patched); #define DA_ENDBR 0x08 #define DA_SMP 0x10 -static unsigned int __initdata_or_module debug_alternative; +static unsigned int debug_alternative; static int __init debug_alt(char *str) { @@ -133,7 +133,7 @@ const unsigned char * const x86_nops[ASM_NOP_MAX+1] = * each single-byte NOPs). If @len to fill out is > ASM_NOP_MAX, pad with INT3 and * *jump* over instead of executing long and daft NOPs. */ -static void __init_or_module add_nop(u8 *instr, unsigned int len) +static void add_nop(u8 *instr, unsigned int len) { u8 *target = instr + len; @@ -206,7 +206,7 @@ static int skip_nops(u8 *instr, int offset, int len) * Optimize a sequence of NOPs, possibly preceded by an unconditional jump * to the end of the NOP sequence into a single NOP. */ -static bool __init_or_module +static bool __optimize_nops(u8 *instr, size_t len, struct insn *insn, int *next, int *prev, int *target) { int i = *next - insn->length; @@ -335,8 +335,7 @@ bool need_reloc(unsigned long offset, u8 *src, size_t src_len) return (target < src || target > src + src_len); } -static void __init_or_module noinline -apply_relocation(u8 *buf, size_t len, u8 *dest, u8 *src, size_t src_len) +void apply_relocation(u8 *buf, size_t len, u8 *dest, u8 *src, size_t src_len) { int prev, target = 0; @@ -403,7 +402,7 @@ noinstr void BUG_func(void) { BUG(); } -EXPORT_SYMBOL_GPL(BUG_func); +EXPORT_SYMBOL(BUG_func); #define CALL_RIP_REL_OPCODE 0xff #define CALL_RIP_REL_MODRM 0x15 @@ -545,7 +544,7 @@ static inline bool is_jcc32(struct insn *insn) return insn->opcode.bytes[0] == 0x0f && (insn->opcode.bytes[1] & 0xf0) == 0x80; } -#if defined(CONFIG_RETPOLINE) && defined(CONFIG_OBJTOOL) +#if defined(CONFIG_MITIGATION_RETPOLINE) && defined(CONFIG_OBJTOOL) /* * CALL/JMP *%\reg @@ -709,8 +708,8 @@ static int patch_retpoline(void *addr, struct insn *insn, u8 *bytes) /* * The compiler is supposed to EMIT an INT3 after every unconditional * JMP instruction due to AMD BTC. However, if the compiler is too old - * or SLS isn't enabled, we still need an INT3 after indirect JMPs - * even on Intel. + * or MITIGATION_SLS isn't enabled, we still need an INT3 after + * indirect JMPs even on Intel. */ if (op == JMP32_INSN_OPCODE && i < insn->length) bytes[i++] = INT3_INSN_OPCODE; @@ -770,7 +769,7 @@ void __init_or_module noinline apply_retpolines(s32 *start, s32 *end) } } -#ifdef CONFIG_RETHUNK +#ifdef CONFIG_MITIGATION_RETHUNK /* * Rewrite the compiler generated return thunk tail-calls. @@ -843,14 +842,14 @@ void __init_or_module noinline apply_returns(s32 *start, s32 *end) } #else void __init_or_module noinline apply_returns(s32 *start, s32 *end) { } -#endif /* CONFIG_RETHUNK */ +#endif /* CONFIG_MITIGATION_RETHUNK */ -#else /* !CONFIG_RETPOLINE || !CONFIG_OBJTOOL */ +#else /* !CONFIG_MITIGATION_RETPOLINE || !CONFIG_OBJTOOL */ void __init_or_module noinline apply_retpolines(s32 *start, s32 *end) { } void __init_or_module noinline apply_returns(s32 *start, s32 *end) { } -#endif /* CONFIG_RETPOLINE && CONFIG_OBJTOOL */ +#endif /* CONFIG_MITIGATION_RETPOLINE && CONFIG_OBJTOOL */ #ifdef CONFIG_X86_KERNEL_IBT diff --git a/arch/x86/kernel/amd_nb.c b/arch/x86/kernel/amd_nb.c index 053f6dcc6b2c..5bf5f9fc5753 100644 --- a/arch/x86/kernel/amd_nb.c +++ b/arch/x86/kernel/amd_nb.c @@ -386,7 +386,7 @@ struct resource *amd_get_mmconfig_range(struct resource *res) int amd_get_subcaches(int cpu) { - struct pci_dev *link = node_to_amd_nb(topology_die_id(cpu))->link; + struct pci_dev *link = node_to_amd_nb(topology_amd_node_id(cpu))->link; unsigned int mask; if (!amd_nb_has_feature(AMD_NB_L3_PARTITIONING)) @@ -400,7 +400,7 @@ int amd_get_subcaches(int cpu) int amd_set_subcaches(int cpu, unsigned long mask) { static unsigned int reset, ban; - struct amd_northbridge *nb = node_to_amd_nb(topology_die_id(cpu)); + struct amd_northbridge *nb = node_to_amd_nb(topology_amd_node_id(cpu)); unsigned int reg; int cuid; diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index 4667bc4b00ab..a42d8a6f7149 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -19,6 +19,7 @@ #include <linux/kernel_stat.h> #include <linux/mc146818rtc.h> #include <linux/acpi_pmtmr.h> +#include <linux/bitmap.h> #include <linux/clockchips.h> #include <linux/interrupt.h> #include <linux/memblock.h> @@ -67,10 +68,6 @@ #include "local.h" -unsigned int num_processors; - -unsigned disabled_cpus; - /* Processor that is doing the boot up */ u32 boot_cpu_physical_apicid __ro_after_init = BAD_APICID; EXPORT_SYMBOL_GPL(boot_cpu_physical_apicid); @@ -78,18 +75,6 @@ EXPORT_SYMBOL_GPL(boot_cpu_physical_apicid); u8 boot_cpu_apic_version __ro_after_init; /* - * Bitmask of physically existing CPUs: - */ -physid_mask_t phys_cpu_present_map; - -/* - * Processor to be disabled specified by kernel parameter - * disable_cpu_apicid=<int>, mostly used for the kdump 2nd kernel to - * avoid undefined behaviour caused by sending INIT from AP to BSP. - */ -static u32 disabled_cpu_apicid __ro_after_init = BAD_APICID; - -/* * This variable controls which CPUs receive external NMIs. By default, * external NMIs are delivered only to the BSP. */ @@ -108,14 +93,6 @@ static inline bool apic_accessible(void) return x2apic_mode || apic_mmio_base; } -/* - * Map cpu index to physical APIC ID - */ -DEFINE_EARLY_PER_CPU_READ_MOSTLY(u32, x86_cpu_to_apicid, BAD_APICID); -DEFINE_EARLY_PER_CPU_READ_MOSTLY(u32, x86_cpu_to_acpiid, U32_MAX); -EXPORT_EARLY_PER_CPU_SYMBOL(x86_cpu_to_apicid); -EXPORT_EARLY_PER_CPU_SYMBOL(x86_cpu_to_acpiid); - #ifdef CONFIG_X86_32 /* Local APIC was disabled by the BIOS and enabled by the kernel */ static int enabled_via_apicbase __ro_after_init; @@ -261,16 +238,6 @@ u64 native_apic_icr_read(void) return icr1 | ((u64)icr2 << 32); } -#ifdef CONFIG_X86_32 -/** - * get_physical_broadcast - Get number of physical broadcast IDs - */ -int get_physical_broadcast(void) -{ - return modern_apic() ? 0xff : 0xf; -} -#endif - /** * lapic_get_maxlvt - get the maximum number of local vector table entries */ @@ -1549,9 +1516,6 @@ static void setup_local_APIC(void) apic_write(APIC_ESR, 0); } #endif - /* Validate that the APIC is registered if required */ - BUG_ON(apic->apic_id_registered && !apic->apic_id_registered()); - /* * Intel recommends to set DFR, LDR and TPR before enabling * an APIC. See e.g. "AP-388 82489DX User's Manual" (Intel @@ -1690,8 +1654,6 @@ void apic_ap_setup(void) end_local_APIC_setup(); } -static __init void cpu_set_boot_apic(void); - static __init void apic_read_boot_cpu_id(bool x2apic) { /* @@ -1706,7 +1668,8 @@ static __init void apic_read_boot_cpu_id(bool x2apic) boot_cpu_physical_apicid = read_apic_id(); boot_cpu_apic_version = GET_APIC_VERSION(apic_read(APIC_LVR)); } - cpu_set_boot_apic(); + topology_register_boot_apic(boot_cpu_physical_apicid); + x86_32_probe_bigsmp_early(); } #ifdef CONFIG_X86_X2APIC @@ -2091,7 +2054,6 @@ void __init init_apic_mappings(void) pr_info("APIC: disable apic facility\n"); apic_disable(); } - num_processors = 1; } } @@ -2305,155 +2267,6 @@ void disconnect_bsp_APIC(int virt_wire_setup) apic_write(APIC_LVT1, value); } -/* - * The number of allocated logical CPU IDs. Since logical CPU IDs are allocated - * contiguously, it equals to current allocated max logical CPU ID plus 1. - * All allocated CPU IDs should be in the [0, nr_logical_cpuids) range, - * so the maximum of nr_logical_cpuids is nr_cpu_ids. - * - * NOTE: Reserve 0 for BSP. - */ -static int nr_logical_cpuids = 1; - -/* - * Used to store mapping between logical CPU IDs and APIC IDs. - */ -u32 cpuid_to_apicid[] = { [0 ... NR_CPUS - 1] = BAD_APICID, }; - -bool arch_match_cpu_phys_id(int cpu, u64 phys_id) -{ - return phys_id == (u64)cpuid_to_apicid[cpu]; -} - -#ifdef CONFIG_SMP -static void cpu_mark_primary_thread(unsigned int cpu, unsigned int apicid) -{ - /* Isolate the SMT bit(s) in the APICID and check for 0 */ - u32 mask = (1U << (fls(smp_num_siblings) - 1)) - 1; - - if (smp_num_siblings == 1 || !(apicid & mask)) - cpumask_set_cpu(cpu, &__cpu_primary_thread_mask); -} - -/* - * Due to the utter mess of CPUID evaluation smp_num_siblings is not valid - * during early boot. Initialize the primary thread mask before SMP - * bringup. - */ -static int __init smp_init_primary_thread_mask(void) -{ - unsigned int cpu; - - /* - * XEN/PV provides either none or useless topology information. - * Pretend that all vCPUs are primary threads. - */ - if (xen_pv_domain()) { - cpumask_copy(&__cpu_primary_thread_mask, cpu_possible_mask); - return 0; - } - - for (cpu = 0; cpu < nr_logical_cpuids; cpu++) - cpu_mark_primary_thread(cpu, cpuid_to_apicid[cpu]); - return 0; -} -early_initcall(smp_init_primary_thread_mask); -#else -static inline void cpu_mark_primary_thread(unsigned int cpu, unsigned int apicid) { } -#endif - -/* - * Should use this API to allocate logical CPU IDs to keep nr_logical_cpuids - * and cpuid_to_apicid[] synchronized. - */ -static int allocate_logical_cpuid(int apicid) -{ - int i; - - /* - * cpuid <-> apicid mapping is persistent, so when a cpu is up, - * check if the kernel has allocated a cpuid for it. - */ - for (i = 0; i < nr_logical_cpuids; i++) { - if (cpuid_to_apicid[i] == apicid) - return i; - } - - /* Allocate a new cpuid. */ - if (nr_logical_cpuids >= nr_cpu_ids) { - WARN_ONCE(1, "APIC: NR_CPUS/possible_cpus limit of %u reached. " - "Processor %d/0x%x and the rest are ignored.\n", - nr_cpu_ids, nr_logical_cpuids, apicid); - return -EINVAL; - } - - cpuid_to_apicid[nr_logical_cpuids] = apicid; - return nr_logical_cpuids++; -} - -static void cpu_update_apic(int cpu, u32 apicid) -{ -#if defined(CONFIG_SMP) || defined(CONFIG_X86_64) - early_per_cpu(x86_cpu_to_apicid, cpu) = apicid; -#endif - set_cpu_possible(cpu, true); - physid_set(apicid, phys_cpu_present_map); - set_cpu_present(cpu, true); - num_processors++; - - if (system_state != SYSTEM_BOOTING) - cpu_mark_primary_thread(cpu, apicid); -} - -static __init void cpu_set_boot_apic(void) -{ - cpuid_to_apicid[0] = boot_cpu_physical_apicid; - cpu_update_apic(0, boot_cpu_physical_apicid); - x86_32_probe_bigsmp_early(); -} - -int generic_processor_info(int apicid) -{ - int cpu, max = nr_cpu_ids; - - /* The boot CPU must be set before MADT/MPTABLE parsing happens */ - if (cpuid_to_apicid[0] == BAD_APICID) - panic("Boot CPU APIC not registered yet\n"); - - if (apicid == boot_cpu_physical_apicid) - return 0; - - if (disabled_cpu_apicid == apicid) { - int thiscpu = num_processors + disabled_cpus; - - pr_warn("APIC: Disabling requested cpu. Processor %d/0x%x ignored.\n", - thiscpu, apicid); - - disabled_cpus++; - return -ENODEV; - } - - if (num_processors >= nr_cpu_ids) { - int thiscpu = max + disabled_cpus; - - pr_warn("APIC: NR_CPUS/possible_cpus limit of %i reached. " - "Processor %d/0x%x ignored.\n", max, thiscpu, apicid); - - disabled_cpus++; - return -EINVAL; - } - - cpu = allocate_logical_cpuid(apicid); - if (cpu < 0) { - disabled_cpus++; - return -EINVAL; - } - - cpu_update_apic(cpu, apicid); - return cpu; -} - - void __irq_msi_compose_msg(struct irq_cfg *cfg, struct msi_msg *msg, bool dmar) { @@ -2496,10 +2309,7 @@ EXPORT_SYMBOL_GPL(x86_msi_msg_get_destid); static void __init apic_bsp_up_setup(void) { -#ifdef CONFIG_X86_64 - apic_write(APIC_ID, apic->set_apic_id(boot_cpu_physical_apicid)); -#endif - physid_set_mask_of_physid(boot_cpu_physical_apicid, &phys_cpu_present_map); + reset_phys_cpu_present_map(boot_cpu_physical_apicid); } /** @@ -2845,15 +2655,6 @@ static int __init lapic_insert_resource(void) */ late_initcall(lapic_insert_resource); -static int __init apic_set_disabled_cpu_apicid(char *arg) -{ - if (!arg || !get_option(&arg, &disabled_cpu_apicid)) - return -EINVAL; - - return 0; -} -early_param("disable_cpu_apicid", apic_set_disabled_cpu_apicid); - static int __init apic_set_extnmi(char *arg) { if (!arg) diff --git a/arch/x86/kernel/apic/apic_common.c b/arch/x86/kernel/apic/apic_common.c index 8a00141073ea..9ef3be866832 100644 --- a/arch/x86/kernel/apic/apic_common.c +++ b/arch/x86/kernel/apic/apic_common.c @@ -18,16 +18,6 @@ u32 apic_flat_calc_apicid(unsigned int cpu) return 1U << cpu; } -bool default_check_apicid_used(physid_mask_t *map, u32 apicid) -{ - return physid_isset(apicid, *map); -} - -void default_ioapic_phys_id_map(physid_mask_t *phys_map, physid_mask_t *retmap) -{ - *retmap = *phys_map; -} - u32 default_cpu_present_to_apicid(int mps_cpu) { if (mps_cpu < nr_cpu_ids && cpu_present(mps_cpu)) @@ -37,11 +27,6 @@ u32 default_cpu_present_to_apicid(int mps_cpu) } EXPORT_SYMBOL_GPL(default_cpu_present_to_apicid); -bool default_apic_id_registered(void) -{ - return physid_isset(read_apic_id(), phys_cpu_present_map); -} - /* * Set up the logical destination ID when the APIC operates in logical * destination mode. diff --git a/arch/x86/kernel/apic/apic_flat_64.c b/arch/x86/kernel/apic/apic_flat_64.c index b295a056a4fc..f37ad3392fec 100644 --- a/arch/x86/kernel/apic/apic_flat_64.c +++ b/arch/x86/kernel/apic/apic_flat_64.c @@ -61,16 +61,6 @@ static u32 flat_get_apic_id(u32 x) return (x >> 24) & 0xFF; } -static u32 set_apic_id(u32 id) -{ - return (id & 0xFF) << 24; -} - -static u32 flat_phys_pkg_id(u32 initial_apic_id, int index_msb) -{ - return initial_apic_id >> index_msb; -} - static int flat_probe(void) { return 1; @@ -80,7 +70,6 @@ static struct apic apic_flat __ro_after_init = { .name = "flat", .probe = flat_probe, .acpi_madt_oem_check = flat_acpi_madt_oem_check, - .apic_id_registered = default_apic_id_registered, .dest_mode_logical = true, @@ -88,11 +77,9 @@ static struct apic apic_flat __ro_after_init = { .init_apic_ldr = default_init_apic_ldr, .cpu_present_to_apicid = default_cpu_present_to_apicid, - .phys_pkg_id = flat_phys_pkg_id, .max_apic_id = 0xFE, .get_apic_id = flat_get_apic_id, - .set_apic_id = set_apic_id, .calc_dest_apicid = apic_flat_calc_apicid, @@ -151,18 +138,15 @@ static struct apic apic_physflat __ro_after_init = { .name = "physical flat", .probe = physflat_probe, .acpi_madt_oem_check = physflat_acpi_madt_oem_check, - .apic_id_registered = default_apic_id_registered, .dest_mode_logical = false, .disable_esr = 0, .cpu_present_to_apicid = default_cpu_present_to_apicid, - .phys_pkg_id = flat_phys_pkg_id, .max_apic_id = 0xFE, .get_apic_id = flat_get_apic_id, - .set_apic_id = set_apic_id, .calc_dest_apicid = apic_default_calc_apicid, diff --git a/arch/x86/kernel/apic/apic_noop.c b/arch/x86/kernel/apic/apic_noop.c index 9f1d553eb48f..b5bb7a2e8340 100644 --- a/arch/x86/kernel/apic/apic_noop.c +++ b/arch/x86/kernel/apic/apic_noop.c @@ -29,7 +29,6 @@ static void noop_send_IPI_self(int vector) { } static void noop_apic_icr_write(u32 low, u32 id) { } static int noop_wakeup_secondary_cpu(u32 apicid, unsigned long start_eip) { return -1; } static u64 noop_apic_icr_read(void) { return 0; } -static u32 noop_phys_pkg_id(u32 cpuid_apic, int index_msb) { return 0; } static u32 noop_get_apic_id(u32 apicid) { return 0; } static void noop_apic_eoi(void) { } @@ -51,12 +50,8 @@ struct apic apic_noop __ro_after_init = { .disable_esr = 0, - .check_apicid_used = default_check_apicid_used, - .ioapic_phys_id_map = default_ioapic_phys_id_map, .cpu_present_to_apicid = default_cpu_present_to_apicid, - .phys_pkg_id = noop_phys_pkg_id, - .max_apic_id = 0xFE, .get_apic_id = noop_get_apic_id, diff --git a/arch/x86/kernel/apic/apic_numachip.c b/arch/x86/kernel/apic/apic_numachip.c index 7d0c51b9d3bc..16410f087b7a 100644 --- a/arch/x86/kernel/apic/apic_numachip.c +++ b/arch/x86/kernel/apic/apic_numachip.c @@ -38,11 +38,6 @@ static u32 numachip1_get_apic_id(u32 x) return id; } -static u32 numachip1_set_apic_id(u32 id) -{ - return (id & 0xff) << 24; -} - static u32 numachip2_get_apic_id(u32 x) { u64 mcfg; @@ -51,16 +46,6 @@ static u32 numachip2_get_apic_id(u32 x) return ((mcfg >> (28 - 8)) & 0xfff00) | (x >> 24); } -static u32 numachip2_set_apic_id(u32 id) -{ - return id << 24; -} - -static u32 numachip_phys_pkg_id(u32 initial_apic_id, int index_msb) -{ - return initial_apic_id >> index_msb; -} - static void numachip1_apic_icr_write(int apicid, unsigned int val) { write_lcsr(CSR_G3_EXT_IRQ_GEN, (apicid << 16) | val); @@ -227,11 +212,9 @@ static const struct apic apic_numachip1 __refconst = { .disable_esr = 0, .cpu_present_to_apicid = default_cpu_present_to_apicid, - .phys_pkg_id = numachip_phys_pkg_id, .max_apic_id = UINT_MAX, .get_apic_id = numachip1_get_apic_id, - .set_apic_id = numachip1_set_apic_id, .calc_dest_apicid = apic_default_calc_apicid, @@ -263,11 +246,9 @@ static const struct apic apic_numachip2 __refconst = { .disable_esr = 0, .cpu_present_to_apicid = default_cpu_present_to_apicid, - .phys_pkg_id = numachip_phys_pkg_id, .max_apic_id = UINT_MAX, .get_apic_id = numachip2_get_apic_id, - .set_apic_id = numachip2_set_apic_id, .calc_dest_apicid = apic_default_calc_apicid, diff --git a/arch/x86/kernel/apic/bigsmp_32.c b/arch/x86/kernel/apic/bigsmp_32.c index 5a0d60b38e6b..9285d500d5b4 100644 --- a/arch/x86/kernel/apic/bigsmp_32.c +++ b/arch/x86/kernel/apic/bigsmp_32.c @@ -18,22 +18,6 @@ static u32 bigsmp_get_apic_id(u32 x) return (x >> 24) & 0xFF; } -static bool bigsmp_check_apicid_used(physid_mask_t *map, u32 apicid) -{ - return false; -} - -static void bigsmp_ioapic_phys_id_map(physid_mask_t *phys_map, physid_mask_t *retmap) -{ - /* For clustered we don't have a good way to do this yet - hack */ - physids_promote(0xFFL, retmap); -} - -static u32 bigsmp_phys_pkg_id(u32 cpuid_apic, int index_msb) -{ - return cpuid_apic >> index_msb; -} - static void bigsmp_send_IPI_allbutself(int vector) { default_send_IPI_mask_allbutself_phys(cpu_online_mask, vector); @@ -84,14 +68,10 @@ static struct apic apic_bigsmp __ro_after_init = { .disable_esr = 1, - .check_apicid_used = bigsmp_check_apicid_used, - .ioapic_phys_id_map = bigsmp_ioapic_phys_id_map, .cpu_present_to_apicid = default_cpu_present_to_apicid, - .phys_pkg_id = bigsmp_phys_pkg_id, .max_apic_id = 0xFE, .get_apic_id = bigsmp_get_apic_id, - .set_apic_id = NULL, .calc_dest_apicid = apic_default_calc_apicid, diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 40c7cf180c20..477b740b2f26 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -1458,20 +1458,20 @@ void restore_boot_irq_mode(void) * * by Matt Domsch <Matt_Domsch@dell.com> Tue Dec 21 12:25:05 CST 1999 */ -void __init setup_ioapic_ids_from_mpc_nocheck(void) +static void __init setup_ioapic_ids_from_mpc_nocheck(void) { + DECLARE_BITMAP(phys_id_present_map, MAX_LOCAL_APIC); + const u32 broadcast_id = 0xF; union IO_APIC_reg_00 reg_00; - physid_mask_t phys_id_present_map; - int ioapic_idx; - int i; unsigned char old_id; unsigned long flags; + int ioapic_idx, i; /* * This is broken; anything with a real cpu count has to * circumvent this idiocy regardless. */ - apic->ioapic_phys_id_map(&phys_cpu_present_map, &phys_id_present_map); + copy_phys_cpu_present_map(phys_id_present_map); /* * Set the IOAPIC ID to the value stored in the MPC table. @@ -1484,11 +1484,10 @@ void __init setup_ioapic_ids_from_mpc_nocheck(void) old_id = mpc_ioapic_id(ioapic_idx); - if (mpc_ioapic_id(ioapic_idx) >= get_physical_broadcast()) { - printk(KERN_ERR "BIOS bug, IO-APIC#%d ID is %d in the MPC table!...\n", - ioapic_idx, mpc_ioapic_id(ioapic_idx)); - printk(KERN_ERR "... fixing up to %d. (tell your hw vendor)\n", - reg_00.bits.ID); + if (mpc_ioapic_id(ioapic_idx) >= broadcast_id) { + pr_err(FW_BUG "IO-APIC#%d ID is %d in the MPC table!...\n", + ioapic_idx, mpc_ioapic_id(ioapic_idx)); + pr_err("... fixing up to %d. (tell your hw vendor)\n", reg_00.bits.ID); ioapics[ioapic_idx].mp_config.apicid = reg_00.bits.ID; } @@ -1497,23 +1496,21 @@ void __init setup_ioapic_ids_from_mpc_nocheck(void) * system must have a unique ID or we get lots of nice * 'stuck on smp_invalidate_needed IPI wait' messages. */ - if (apic->check_apicid_used(&phys_id_present_map, - mpc_ioapic_id(ioapic_idx))) { - printk(KERN_ERR "BIOS bug, IO-APIC#%d ID %d is already used!...\n", - ioapic_idx, mpc_ioapic_id(ioapic_idx)); - for (i = 0; i < get_physical_broadcast(); i++) - if (!physid_isset(i, phys_id_present_map)) + if (test_bit(mpc_ioapic_id(ioapic_idx), phys_id_present_map)) { + pr_err(FW_BUG "IO-APIC#%d ID %d is already used!...\n", + ioapic_idx, mpc_ioapic_id(ioapic_idx)); + for (i = 0; i < broadcast_id; i++) + if (!test_bit(i, phys_id_present_map)) break; - if (i >= get_physical_broadcast()) + if (i >= broadcast_id) panic("Max APIC ID exceeded!\n"); - printk(KERN_ERR "... fixing up to %d. (tell your hw vendor)\n", - i); - physid_set(i, phys_id_present_map); + pr_err("... fixing up to %d. (tell your hw vendor)\n", i); + set_bit(i, phys_id_present_map); ioapics[ioapic_idx].mp_config.apicid = i; } else { apic_printk(APIC_VERBOSE, "Setting %d in the phys_id_present_map\n", mpc_ioapic_id(ioapic_idx)); - physid_set(mpc_ioapic_id(ioapic_idx), phys_id_present_map); + set_bit(mpc_ioapic_id(ioapic_idx), phys_id_present_map); } /* @@ -2209,7 +2206,7 @@ static inline void __init check_timer(void) * 8259A. */ if (pin1 == -1) { - panic_if_irq_remap("BIOS bug: timer not connected to IO-APIC"); + panic_if_irq_remap(FW_BUG "Timer not connected to IO-APIC"); pin1 = pin2; apic1 = apic2; no_pin1 = 1; @@ -2354,7 +2351,7 @@ static int mp_irqdomain_create(int ioapic) fwspec.param_count = 1; fwspec.param[0] = mpc_ioapic_id(ioapic); - parent = irq_find_matching_fwspec(&fwspec, DOMAIN_BUS_ANY); + parent = irq_find_matching_fwspec(&fwspec, DOMAIN_BUS_GENERIC_MSI); if (!parent) { if (!cfg->dev) irq_domain_free_fwnode(fn); @@ -2494,56 +2491,41 @@ unsigned int arch_dynirq_lower_bound(unsigned int from) #ifdef CONFIG_X86_32 static int io_apic_get_unique_id(int ioapic, int apic_id) { + static DECLARE_BITMAP(apic_id_map, MAX_LOCAL_APIC); + const u32 broadcast_id = 0xF; union IO_APIC_reg_00 reg_00; - static physid_mask_t apic_id_map = PHYSID_MASK_NONE; - physid_mask_t tmp; unsigned long flags; int i = 0; - /* - * The P4 platform supports up to 256 APIC IDs on two separate APIC - * buses (one for LAPICs, one for IOAPICs), where predecessors only - * supports up to 16 on one shared APIC bus. - * - * TBD: Expand LAPIC/IOAPIC support on P4-class systems to take full - * advantage of new APIC bus architecture. - */ - - if (physids_empty(apic_id_map)) - apic->ioapic_phys_id_map(&phys_cpu_present_map, &apic_id_map); + /* Initialize the ID map */ + if (bitmap_empty(apic_id_map, MAX_LOCAL_APIC)) + copy_phys_cpu_present_map(apic_id_map); raw_spin_lock_irqsave(&ioapic_lock, flags); reg_00.raw = io_apic_read(ioapic, 0); raw_spin_unlock_irqrestore(&ioapic_lock, flags); - if (apic_id >= get_physical_broadcast()) { - printk(KERN_WARNING "IOAPIC[%d]: Invalid apic_id %d, trying " - "%d\n", ioapic, apic_id, reg_00.bits.ID); + if (apic_id >= broadcast_id) { + pr_warn("IOAPIC[%d]: Invalid apic_id %d, trying %d\n", + ioapic, apic_id, reg_00.bits.ID); apic_id = reg_00.bits.ID; } - /* - * Every APIC in a system must have a unique ID or we get lots of nice - * 'stuck on smp_invalidate_needed IPI wait' messages. - */ - if (apic->check_apicid_used(&apic_id_map, apic_id)) { - - for (i = 0; i < get_physical_broadcast(); i++) { - if (!apic->check_apicid_used(&apic_id_map, i)) + /* Every APIC in a system must have a unique ID */ + if (test_bit(apic_id, apic_id_map)) { + for (i = 0; i < broadcast_id; i++) { + if (!test_bit(i, apic_id_map)) break; } - if (i == get_physical_broadcast()) + if (i == broadcast_id) panic("Max apic_id exceeded!\n"); - printk(KERN_WARNING "IOAPIC[%d]: apic_id %d already used, " - "trying %d\n", ioapic, apic_id, i); - + pr_warn("IOAPIC[%d]: apic_id %d already used, trying %d\n", ioapic, apic_id, i); apic_id = i; } - physid_set_mask_of_physid(apic_id, &tmp); - physids_or(apic_id_map, apic_id_map, tmp); + set_bit(apic_id, apic_id_map); if (reg_00.bits.ID != apic_id) { reg_00.bits.ID = apic_id; @@ -2569,11 +2551,9 @@ static int io_apic_get_unique_id(int ioapic, int apic_id) static u8 io_apic_unique_id(int idx, u8 id) { - if ((boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) && - !APIC_XAPIC(boot_cpu_apic_version)) + if ((boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) && !APIC_XAPIC(boot_cpu_apic_version)) return io_apic_get_unique_id(idx, id); - else - return id; + return id; } #else static u8 io_apic_unique_id(int idx, u8 id) diff --git a/arch/x86/kernel/apic/local.h b/arch/x86/kernel/apic/local.h index 9ea6186ea88c..842fe28496be 100644 --- a/arch/x86/kernel/apic/local.h +++ b/arch/x86/kernel/apic/local.h @@ -16,8 +16,6 @@ /* X2APIC */ void __x2apic_send_IPI_dest(unsigned int apicid, int vector, unsigned int dest); u32 x2apic_get_apic_id(u32 id); -u32 x2apic_set_apic_id(u32 id); -u32 x2apic_phys_pkg_id(u32 initial_apicid, int index_msb); void x2apic_send_IPI_all(int vector); void x2apic_send_IPI_allbutself(int vector); @@ -63,9 +61,6 @@ void default_send_IPI_allbutself(int vector); void default_send_IPI_all(int vector); void default_send_IPI_self(int vector); -bool default_apic_id_registered(void); -bool default_check_apicid_used(physid_mask_t *map, u32 apicid); - #ifdef CONFIG_X86_32 void default_send_IPI_mask_sequence_logical(const struct cpumask *mask, int vector); void default_send_IPI_mask_allbutself_logical(const struct cpumask *mask, int vector); diff --git a/arch/x86/kernel/apic/probe_32.c b/arch/x86/kernel/apic/probe_32.c index c0f78059f06a..f75ee345c02d 100644 --- a/arch/x86/kernel/apic/probe_32.c +++ b/arch/x86/kernel/apic/probe_32.c @@ -18,11 +18,6 @@ #include "local.h" -static u32 default_phys_pkg_id(u32 cpuid_apic, int index_msb) -{ - return cpuid_apic >> index_msb; -} - static u32 default_get_apic_id(u32 x) { unsigned int ver = GET_APIC_VERSION(apic_read(APIC_LVR)); @@ -43,17 +38,13 @@ static struct apic apic_default __ro_after_init = { .name = "default", .probe = probe_default, - .apic_id_registered = default_apic_id_registered, .dest_mode_logical = true, .disable_esr = 0, - .check_apicid_used = default_check_apicid_used, .init_apic_ldr = default_init_apic_ldr, - .ioapic_phys_id_map = default_ioapic_phys_id_map, .cpu_present_to_apicid = default_cpu_present_to_apicid, - .phys_pkg_id = default_phys_pkg_id, .max_apic_id = 0xFE, .get_apic_id = default_get_apic_id, diff --git a/arch/x86/kernel/apic/x2apic_cluster.c b/arch/x86/kernel/apic/x2apic_cluster.c index 28a7d3f2312d..567dbd2fe4b6 100644 --- a/arch/x86/kernel/apic/x2apic_cluster.c +++ b/arch/x86/kernel/apic/x2apic_cluster.c @@ -231,16 +231,12 @@ static struct apic apic_x2apic_cluster __ro_after_init = { .disable_esr = 0, - .check_apicid_used = NULL, .init_apic_ldr = init_x2apic_ldr, - .ioapic_phys_id_map = NULL, .cpu_present_to_apicid = default_cpu_present_to_apicid, - .phys_pkg_id = x2apic_phys_pkg_id, .max_apic_id = UINT_MAX, .x2apic_set_max_apicid = true, .get_apic_id = x2apic_get_apic_id, - .set_apic_id = x2apic_set_apic_id, .calc_dest_apicid = x2apic_calc_apicid, diff --git a/arch/x86/kernel/apic/x2apic_phys.c b/arch/x86/kernel/apic/x2apic_phys.c index 409815a40668..12d4c35547a6 100644 --- a/arch/x86/kernel/apic/x2apic_phys.c +++ b/arch/x86/kernel/apic/x2apic_phys.c @@ -129,16 +129,6 @@ u32 x2apic_get_apic_id(u32 id) return id; } -u32 x2apic_set_apic_id(u32 id) -{ - return id; -} - -u32 x2apic_phys_pkg_id(u32 initial_apicid, int index_msb) -{ - return initial_apicid >> index_msb; -} - static struct apic apic_x2apic_phys __ro_after_init = { .name = "physical x2apic", @@ -150,12 +140,10 @@ static struct apic apic_x2apic_phys __ro_after_init = { .disable_esr = 0, .cpu_present_to_apicid = default_cpu_present_to_apicid, - .phys_pkg_id = x2apic_phys_pkg_id, .max_apic_id = UINT_MAX, .x2apic_set_max_apicid = true, .get_apic_id = x2apic_get_apic_id, - .set_apic_id = x2apic_set_apic_id, .calc_dest_apicid = apic_default_calc_apicid, diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c index f1766b18dcd0..7fef504ca508 100644 --- a/arch/x86/kernel/apic/x2apic_uv_x.c +++ b/arch/x86/kernel/apic/x2apic_uv_x.c @@ -241,54 +241,20 @@ static void __init uv_tsc_check_sync(void) is_uv(UV3) ? sname.s3.field : \ undef) -/* [Copied from arch/x86/kernel/cpu/topology.c:detect_extended_topology()] */ - -#define SMT_LEVEL 0 /* Leaf 0xb SMT level */ -#define INVALID_TYPE 0 /* Leaf 0xb sub-leaf types */ -#define SMT_TYPE 1 -#define CORE_TYPE 2 -#define LEAFB_SUBTYPE(ecx) (((ecx) >> 8) & 0xff) -#define BITS_SHIFT_NEXT_LEVEL(eax) ((eax) & 0x1f) - -static void set_x2apic_bits(void) -{ - unsigned int eax, ebx, ecx, edx, sub_index; - unsigned int sid_shift; - - cpuid(0, &eax, &ebx, &ecx, &edx); - if (eax < 0xb) { - pr_info("UV: CPU does not have CPUID.11\n"); - return; - } - - cpuid_count(0xb, SMT_LEVEL, &eax, &ebx, &ecx, &edx); - if (ebx == 0 || (LEAFB_SUBTYPE(ecx) != SMT_TYPE)) { - pr_info("UV: CPUID.11 not implemented\n"); - return; - } - - sid_shift = BITS_SHIFT_NEXT_LEVEL(eax); - sub_index = 1; - do { - cpuid_count(0xb, sub_index, &eax, &ebx, &ecx, &edx); - if (LEAFB_SUBTYPE(ecx) == CORE_TYPE) { - sid_shift = BITS_SHIFT_NEXT_LEVEL(eax); - break; - } - sub_index++; - } while (LEAFB_SUBTYPE(ecx) != INVALID_TYPE); - - uv_cpuid.apicid_shift = 0; - uv_cpuid.apicid_mask = (~(-1 << sid_shift)); - uv_cpuid.socketid_shift = sid_shift; -} - static void __init early_get_apic_socketid_shift(void) { + unsigned int sid_shift = topology_get_domain_shift(TOPO_PKG_DOMAIN); + if (is_uv2_hub() || is_uv3_hub()) uvh_apicid.v = uv_early_read_mmr(UVH_APICID); - set_x2apic_bits(); + if (sid_shift) { + uv_cpuid.apicid_shift = 0; + uv_cpuid.apicid_mask = (~(-1 << sid_shift)); + uv_cpuid.socketid_shift = sid_shift; + } else { + pr_info("UV: CPU does not have valid CPUID.11\n"); + } pr_info("UV: apicid_shift:%d apicid_mask:0x%x\n", uv_cpuid.apicid_shift, uv_cpuid.apicid_mask); pr_info("UV: socketid_shift:%d pnode_mask:0x%x\n", uv_cpuid.socketid_shift, uv_cpuid.pnode_mask); @@ -779,21 +745,6 @@ static void uv_send_IPI_all(int vector) uv_send_IPI_mask(cpu_online_mask, vector); } -static u32 set_apic_id(u32 id) -{ - return id; -} - -static unsigned int uv_read_apic_id(void) -{ - return x2apic_get_apic_id(apic_read(APIC_ID)); -} - -static u32 uv_phys_pkg_id(u32 initial_apicid, int index_msb) -{ - return uv_read_apic_id() >> index_msb; -} - static int uv_probe(void) { return apic == &apic_x2apic_uv_x; @@ -810,11 +761,9 @@ static struct apic apic_x2apic_uv_x __ro_after_init = { .disable_esr = 0, .cpu_present_to_apicid = default_cpu_present_to_apicid, - .phys_pkg_id = uv_phys_pkg_id, .max_apic_id = UINT_MAX, .get_apic_id = x2apic_get_apic_id, - .set_apic_id = set_apic_id, .calc_dest_apicid = apic_default_calc_apicid, diff --git a/arch/x86/kernel/apm_32.c b/arch/x86/kernel/apm_32.c index 76a5ced278c2..b37ab1095707 100644 --- a/arch/x86/kernel/apm_32.c +++ b/arch/x86/kernel/apm_32.c @@ -1055,35 +1055,6 @@ static int apm_get_power_status(u_short *status, u_short *bat, u_short *life) return APM_SUCCESS; } -#if 0 -static int apm_get_battery_status(u_short which, u_short *status, - u_short *bat, u_short *life, u_short *nbat) -{ - u32 eax; - u32 ebx; - u32 ecx; - u32 edx; - u32 esi; - - if (apm_info.connection_version < 0x0102) { - /* pretend we only have one battery. */ - if (which != 1) - return APM_BAD_DEVICE; - *nbat = 1; - return apm_get_power_status(status, bat, life); - } - - if (apm_bios_call(APM_FUNC_GET_STATUS, (0x8000 | (which)), 0, &eax, - &ebx, &ecx, &edx, &esi)) - return (eax >> 8) & 0xff; - *status = ebx; - *bat = ecx; - *life = edx; - *nbat = esi; - return APM_SUCCESS; -} -#endif - /** * apm_engage_power_management - enable PM on a device * @device: identity of device diff --git a/arch/x86/kernel/asm-offsets.c b/arch/x86/kernel/asm-offsets.c index 6913b372ccf7..a98020bf31bb 100644 --- a/arch/x86/kernel/asm-offsets.c +++ b/arch/x86/kernel/asm-offsets.c @@ -109,7 +109,7 @@ static void __used common(void) OFFSET(TSS_sp2, tss_struct, x86_tss.sp2); OFFSET(X86_top_of_stack, pcpu_hot, top_of_stack); OFFSET(X86_current_task, pcpu_hot, current_task); -#ifdef CONFIG_CALL_DEPTH_TRACKING +#ifdef CONFIG_MITIGATION_CALL_DEPTH_TRACKING OFFSET(X86_call_depth, pcpu_hot, call_depth); #endif #if IS_ENABLED(CONFIG_CRYPTO_ARIA_AESNI_AVX_X86_64) diff --git a/arch/x86/kernel/callthunks.c b/arch/x86/kernel/callthunks.c index 64ad2ddea121..30335182b6b0 100644 --- a/arch/x86/kernel/callthunks.c +++ b/arch/x86/kernel/callthunks.c @@ -24,6 +24,8 @@ static int __initdata_or_module debug_callthunks; +#define MAX_PATCH_LEN (255-1) + #define prdbg(fmt, args...) \ do { \ if (debug_callthunks) \ @@ -42,8 +44,8 @@ DEFINE_PER_CPU(u64, __x86_call_count); DEFINE_PER_CPU(u64, __x86_ret_count); DEFINE_PER_CPU(u64, __x86_stuffs_count); DEFINE_PER_CPU(u64, __x86_ctxsw_count); -EXPORT_SYMBOL_GPL(__x86_ctxsw_count); -EXPORT_SYMBOL_GPL(__x86_call_count); +EXPORT_PER_CPU_SYMBOL_GPL(__x86_ctxsw_count); +EXPORT_PER_CPU_SYMBOL_GPL(__x86_call_count); #endif extern s32 __call_sites[], __call_sites_end[]; @@ -179,10 +181,15 @@ static const u8 nops[] = { static void *patch_dest(void *dest, bool direct) { unsigned int tsize = SKL_TMPL_SIZE; + u8 insn_buff[MAX_PATCH_LEN]; u8 *pad = dest - tsize; + memcpy(insn_buff, skl_call_thunk_template, tsize); + apply_relocation(insn_buff, tsize, pad, + skl_call_thunk_template, tsize); + /* Already patched? */ - if (!bcmp(pad, skl_call_thunk_template, tsize)) + if (!bcmp(pad, insn_buff, tsize)) return pad; /* Ensure there are nops */ @@ -192,9 +199,9 @@ static void *patch_dest(void *dest, bool direct) } if (direct) - memcpy(pad, skl_call_thunk_template, tsize); + memcpy(pad, insn_buff, tsize); else - text_poke_copy_locked(pad, skl_call_thunk_template, tsize, true); + text_poke_copy_locked(pad, insn_buff, tsize, true); return pad; } @@ -290,20 +297,27 @@ void *callthunks_translate_call_dest(void *dest) static bool is_callthunk(void *addr) { unsigned int tmpl_size = SKL_TMPL_SIZE; - void *tmpl = skl_call_thunk_template; + u8 insn_buff[MAX_PATCH_LEN]; unsigned long dest; + u8 *pad; dest = roundup((unsigned long)addr, CONFIG_FUNCTION_ALIGNMENT); if (!thunks_initialized || skip_addr((void *)dest)) return false; - return !bcmp((void *)(dest - tmpl_size), tmpl, tmpl_size); + pad = (void *)(dest - tmpl_size); + + memcpy(insn_buff, skl_call_thunk_template, tmpl_size); + apply_relocation(insn_buff, tmpl_size, pad, + skl_call_thunk_template, tmpl_size); + + return !bcmp(pad, insn_buff, tmpl_size); } int x86_call_depth_emit_accounting(u8 **pprog, void *func) { unsigned int tmpl_size = SKL_TMPL_SIZE; - void *tmpl = skl_call_thunk_template; + u8 insn_buff[MAX_PATCH_LEN]; if (!thunks_initialized) return 0; @@ -312,7 +326,11 @@ int x86_call_depth_emit_accounting(u8 **pprog, void *func) if (func && is_callthunk(func)) return 0; - memcpy(*pprog, tmpl, tmpl_size); + memcpy(insn_buff, skl_call_thunk_template, tmpl_size); + apply_relocation(insn_buff, tmpl_size, *pprog, + skl_call_thunk_template, tmpl_size); + + memcpy(*pprog, insn_buff, tmpl_size); *pprog += tmpl_size; return tmpl_size; } diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile index 93eabf544031..eb4dbcdf41f1 100644 --- a/arch/x86/kernel/cpu/Makefile +++ b/arch/x86/kernel/cpu/Makefile @@ -17,7 +17,8 @@ KMSAN_SANITIZE_common.o := n # As above, instrumenting secondary CPU boot code causes boot hangs. KCSAN_SANITIZE_common.o := n -obj-y := cacheinfo.o scattered.o topology.o +obj-y := cacheinfo.o scattered.o +obj-y += topology_common.o topology_ext.o topology_amd.o obj-y += common.o obj-y += rdrand.o obj-y += match.o @@ -25,14 +26,16 @@ obj-y += bugs.o obj-y += aperfmperf.o obj-y += cpuid-deps.o obj-y += umwait.o +obj-y += capflags.o powerflags.o -obj-$(CONFIG_PROC_FS) += proc.o -obj-y += capflags.o powerflags.o +obj-$(CONFIG_X86_LOCAL_APIC) += topology.o -obj-$(CONFIG_IA32_FEAT_CTL) += feat_ctl.o +obj-$(CONFIG_PROC_FS) += proc.o + +obj-$(CONFIG_IA32_FEAT_CTL) += feat_ctl.o ifdef CONFIG_CPU_SUP_INTEL -obj-y += intel.o intel_pconfig.o tsx.o -obj-$(CONFIG_PM) += intel_epb.o +obj-y += intel.o intel_pconfig.o tsx.o +obj-$(CONFIG_PM) += intel_epb.o endif obj-$(CONFIG_CPU_SUP_AMD) += amd.o obj-$(CONFIG_CPU_SUP_HYGON) += hygon.o diff --git a/arch/x86/kernel/cpu/acrn.c b/arch/x86/kernel/cpu/acrn.c index bfeb18fad63f..2c5b51aad91a 100644 --- a/arch/x86/kernel/cpu/acrn.c +++ b/arch/x86/kernel/cpu/acrn.c @@ -26,8 +26,8 @@ static u32 __init acrn_detect(void) static void __init acrn_init_platform(void) { - /* Setup the IDT for ACRN hypervisor callback */ - alloc_intr_gate(HYPERVISOR_CALLBACK_VECTOR, asm_sysvec_acrn_hv_callback); + /* Install system interrupt handler for ACRN hypervisor callback */ + sysvec_install(HYPERVISOR_CALLBACK_VECTOR, sysvec_acrn_hv_callback); x86_platform.calibrate_tsc = acrn_get_tsc_khz; x86_platform.calibrate_cpu = acrn_get_tsc_khz; diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index 9f42d1c59e09..3282a747b645 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -20,6 +20,7 @@ #include <asm/delay.h> #include <asm/debugreg.h> #include <asm/resctrl.h> +#include <asm/sev.h> #ifdef CONFIG_X86_64 # include <asm/mmconfig.h> @@ -27,13 +28,6 @@ #include "cpu.h" -/* - * nodes_per_socket: Stores the number of nodes per socket. - * Refer to Fam15h Models 00-0fh BKDG - CPUID Fn8000_001E_ECX - * Node Identifiers[10:8] - */ -static u32 nodes_per_socket = 1; - static inline int rdmsrl_amd_safe(unsigned msr, unsigned long long *p) { u32 gprs[8] = { 0 }; @@ -300,97 +294,6 @@ static int nearby_node(int apicid) } #endif -/* - * Fix up topo::core_id for pre-F17h systems to be in the - * [0 .. cores_per_node - 1] range. Not really needed but - * kept so as not to break existing setups. - */ -static void legacy_fixup_core_id(struct cpuinfo_x86 *c) -{ - u32 cus_per_node; - - if (c->x86 >= 0x17) - return; - - cus_per_node = c->x86_max_cores / nodes_per_socket; - c->topo.core_id %= cus_per_node; -} - -/* - * Fixup core topology information for - * (1) AMD multi-node processors - * Assumption: Number of cores in each internal node is the same. - * (2) AMD processors supporting compute units - */ -static void amd_get_topology(struct cpuinfo_x86 *c) -{ - /* get information required for multi-node processors */ - if (boot_cpu_has(X86_FEATURE_TOPOEXT)) { - int err; - u32 eax, ebx, ecx, edx; - - cpuid(0x8000001e, &eax, &ebx, &ecx, &edx); - - c->topo.die_id = ecx & 0xff; - - if (c->x86 == 0x15) - c->topo.cu_id = ebx & 0xff; - - if (c->x86 >= 0x17) { - c->topo.core_id = ebx & 0xff; - - if (smp_num_siblings > 1) - c->x86_max_cores /= smp_num_siblings; - } - - /* - * In case leaf B is available, use it to derive - * topology information. - */ - err = detect_extended_topology(c); - if (!err) - c->x86_coreid_bits = get_count_order(c->x86_max_cores); - - cacheinfo_amd_init_llc_id(c); - - } else if (cpu_has(c, X86_FEATURE_NODEID_MSR)) { - u64 value; - - rdmsrl(MSR_FAM10H_NODE_ID, value); - c->topo.die_id = value & 7; - c->topo.llc_id = c->topo.die_id; - } else - return; - - if (nodes_per_socket > 1) { - set_cpu_cap(c, X86_FEATURE_AMD_DCM); - legacy_fixup_core_id(c); - } -} - -/* - * On a AMD dual core setup the lower bits of the APIC id distinguish the cores. - * Assumes number of cores is a power of two. - */ -static void amd_detect_cmp(struct cpuinfo_x86 *c) -{ - unsigned bits; - - bits = c->x86_coreid_bits; - /* Low order bits define the core id (index of core in socket) */ - c->topo.core_id = c->topo.initial_apicid & ((1 << bits)-1); - /* Convert the initial APIC ID into the socket ID */ - c->topo.pkg_id = c->topo.initial_apicid >> bits; - /* use socket ID also for last level cache */ - c->topo.llc_id = c->topo.die_id = c->topo.pkg_id; -} - -u32 amd_get_nodes_per_socket(void) -{ - return nodes_per_socket; -} -EXPORT_SYMBOL_GPL(amd_get_nodes_per_socket); - static void srat_detect_node(struct cpuinfo_x86 *c) { #ifdef CONFIG_NUMA @@ -442,32 +345,6 @@ static void srat_detect_node(struct cpuinfo_x86 *c) #endif } -static void early_init_amd_mc(struct cpuinfo_x86 *c) -{ -#ifdef CONFIG_SMP - unsigned bits, ecx; - - /* Multi core CPU? */ - if (c->extended_cpuid_level < 0x80000008) - return; - - ecx = cpuid_ecx(0x80000008); - - c->x86_max_cores = (ecx & 0xff) + 1; - - /* CPU telling us the core id bits shift? */ - bits = (ecx >> 12) & 0xF; - - /* Otherwise recompute */ - if (bits == 0) { - while ((1 << bits) < c->x86_max_cores) - bits++; - } - - c->x86_coreid_bits = bits; -#endif -} - static void bsp_init_amd(struct cpuinfo_x86 *c) { if (cpu_has(c, X86_FEATURE_CONSTANT_TSC)) { @@ -500,18 +377,6 @@ static void bsp_init_amd(struct cpuinfo_x86 *c) if (cpu_has(c, X86_FEATURE_MWAITX)) use_mwaitx_delay(); - if (boot_cpu_has(X86_FEATURE_TOPOEXT)) { - u32 ecx; - - ecx = cpuid_ecx(0x8000001e); - __max_die_per_package = nodes_per_socket = ((ecx >> 8) & 7) + 1; - } else if (boot_cpu_has(X86_FEATURE_NODEID_MSR)) { - u64 value; - - rdmsrl(MSR_FAM10H_NODE_ID, value); - __max_die_per_package = nodes_per_socket = ((value >> 3) & 7) + 1; - } - if (!boot_cpu_has(X86_FEATURE_AMD_SSBD) && !boot_cpu_has(X86_FEATURE_VIRT_SSBD) && c->x86 >= 0x15 && c->x86 <= 0x17) { @@ -538,7 +403,7 @@ static void bsp_init_amd(struct cpuinfo_x86 *c) /* Figure out Zen generations: */ switch (c->x86) { - case 0x17: { + case 0x17: switch (c->x86_model) { case 0x00 ... 0x2f: case 0x50 ... 0x5f: @@ -554,8 +419,8 @@ static void bsp_init_amd(struct cpuinfo_x86 *c) goto warn; } break; - } - case 0x19: { + + case 0x19: switch (c->x86_model) { case 0x00 ... 0x0f: case 0x20 ... 0x5f: @@ -569,11 +434,39 @@ static void bsp_init_amd(struct cpuinfo_x86 *c) goto warn; } break; - } + + case 0x1a: + switch (c->x86_model) { + case 0x00 ... 0x0f: + case 0x20 ... 0x2f: + case 0x40 ... 0x4f: + case 0x70 ... 0x7f: + setup_force_cpu_cap(X86_FEATURE_ZEN5); + break; + default: + goto warn; + } + break; + default: break; } + if (cpu_has(c, X86_FEATURE_SEV_SNP)) { + /* + * RMP table entry format is not architectural and it can vary by processor + * and is defined by the per-processor PPR. Restrict SNP support on the + * known CPU model and family for which the RMP table entry format is + * currently defined for. + */ + if (!boot_cpu_has(X86_FEATURE_ZEN3) && + !boot_cpu_has(X86_FEATURE_ZEN4) && + !boot_cpu_has(X86_FEATURE_ZEN5)) + setup_clear_cpu_cap(X86_FEATURE_SEV_SNP); + else if (!snp_probe_rmptable_info()) + setup_clear_cpu_cap(X86_FEATURE_SEV_SNP); + } + return; warn: @@ -592,8 +485,8 @@ static void early_detect_mem_encrypt(struct cpuinfo_x86 *c) * SME feature (set in scattered.c). * If the kernel has not enabled SME via any means then * don't advertise the SME feature. - * For SEV: If BIOS has not enabled SEV then don't advertise the - * SEV and SEV_ES feature (set in scattered.c). + * For SEV: If BIOS has not enabled SEV then don't advertise SEV and + * any additional functionality based on it. * * In all cases, since support for SME and SEV requires long mode, * don't advertise the feature under CONFIG_X86_32. @@ -628,6 +521,7 @@ clear_all: clear_sev: setup_clear_cpu_cap(X86_FEATURE_SEV); setup_clear_cpu_cap(X86_FEATURE_SEV_ES); + setup_clear_cpu_cap(X86_FEATURE_SEV_SNP); } } @@ -636,8 +530,6 @@ static void early_init_amd(struct cpuinfo_x86 *c) u64 value; u32 dummy; - early_init_amd_mc(c); - if (c->x86 >= 0xf) set_cpu_cap(c, X86_FEATURE_K8); @@ -717,9 +609,6 @@ static void early_init_amd(struct cpuinfo_x86 *c) } } - if (cpu_has(c, X86_FEATURE_TOPOEXT)) - smp_num_siblings = ((cpuid_ebx(0x8000001e) >> 8) & 0xff) + 1; - if (!cpu_has(c, X86_FEATURE_HYPERVISOR) && !cpu_has(c, X86_FEATURE_IBPB_BRTYPE)) { if (c->x86 == 0x17 && boot_cpu_has(X86_FEATURE_AMD_IBPB)) setup_force_cpu_cap(X86_FEATURE_IBPB_BRTYPE); @@ -928,7 +817,7 @@ static void fix_erratum_1386(struct cpuinfo_x86 *c) void init_spectral_chicken(struct cpuinfo_x86 *c) { -#ifdef CONFIG_CPU_UNRET_ENTRY +#ifdef CONFIG_MITIGATION_UNRET_ENTRY u64 value; /* @@ -956,7 +845,6 @@ static void init_amd_zen_common(void) static void init_amd_zen1(struct cpuinfo_x86 *c) { - init_amd_zen_common(); fix_erratum_1386(c); /* Fix up CPUID bits, but only if not virtualised. */ @@ -1010,7 +898,6 @@ static void zen2_zenbleed_check(struct cpuinfo_x86 *c) static void init_amd_zen2(struct cpuinfo_x86 *c) { - init_amd_zen_common(); init_spectral_chicken(c); fix_erratum_1386(c); zen2_zenbleed_check(c); @@ -1018,8 +905,6 @@ static void init_amd_zen2(struct cpuinfo_x86 *c) static void init_amd_zen3(struct cpuinfo_x86 *c) { - init_amd_zen_common(); - if (!cpu_has(c, X86_FEATURE_HYPERVISOR)) { /* * Zen3 (Fam19 model < 0x10) parts are not susceptible to @@ -1033,12 +918,14 @@ static void init_amd_zen3(struct cpuinfo_x86 *c) static void init_amd_zen4(struct cpuinfo_x86 *c) { - init_amd_zen_common(); - if (!cpu_has(c, X86_FEATURE_HYPERVISOR)) msr_set_bit(MSR_ZEN4_BP_CFG, MSR_ZEN4_BP_CFG_SHARED_BTB_FIX_BIT); } +static void init_amd_zen5(struct cpuinfo_x86 *c) +{ +} + static void init_amd(struct cpuinfo_x86 *c) { u64 vm_cr; @@ -1058,9 +945,6 @@ static void init_amd(struct cpuinfo_x86 *c) if (cpu_has(c, X86_FEATURE_FSRM)) set_cpu_cap(c, X86_FEATURE_FSRS); - /* get apicid instead of initial apic id from cpuid */ - c->topo.apicid = read_apic_id(); - /* K6s reports MCEs but don't actually have all the MSRs */ if (c->x86 < 6) clear_cpu_cap(c, X86_FEATURE_MCE); @@ -1076,6 +960,13 @@ static void init_amd(struct cpuinfo_x86 *c) case 0x16: init_amd_jg(c); break; } + /* + * Save up on some future enablement work and do common Zen + * settings. + */ + if (c->x86 >= 0x17) + init_amd_zen_common(); + if (boot_cpu_has(X86_FEATURE_ZEN1)) init_amd_zen1(c); else if (boot_cpu_has(X86_FEATURE_ZEN2)) @@ -1084,6 +975,8 @@ static void init_amd(struct cpuinfo_x86 *c) init_amd_zen3(c); else if (boot_cpu_has(X86_FEATURE_ZEN4)) init_amd_zen4(c); + else if (boot_cpu_has(X86_FEATURE_ZEN5)) + init_amd_zen5(c); /* * Enable workaround for FXSAVE leak on CPUs @@ -1094,8 +987,6 @@ static void init_amd(struct cpuinfo_x86 *c) cpu_detect_cache_sizes(c); - amd_detect_cmp(c); - amd_get_topology(c); srat_detect_node(c); init_amd_cacheinfo(c); diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c index bb0ab8466b91..e7ba936d798b 100644 --- a/arch/x86/kernel/cpu/bugs.c +++ b/arch/x86/kernel/cpu/bugs.c @@ -56,7 +56,7 @@ EXPORT_SYMBOL_GPL(x86_spec_ctrl_base); /* The current value of the SPEC_CTRL MSR with task-specific bits set */ DEFINE_PER_CPU(u64, x86_spec_ctrl_current); -EXPORT_SYMBOL_GPL(x86_spec_ctrl_current); +EXPORT_PER_CPU_SYMBOL_GPL(x86_spec_ctrl_current); u64 x86_pred_cmd __ro_after_init = PRED_CMD_IBPB; EXPORT_SYMBOL_GPL(x86_pred_cmd); @@ -111,9 +111,6 @@ DEFINE_STATIC_KEY_FALSE(switch_mm_cond_ibpb); /* Control unconditional IBPB in switch_mm() */ DEFINE_STATIC_KEY_FALSE(switch_mm_always_ibpb); -/* Control MDS CPU buffer clear before returning to user space */ -DEFINE_STATIC_KEY_FALSE(mds_user_clear); -EXPORT_SYMBOL_GPL(mds_user_clear); /* Control MDS CPU buffer clear before idling (halt, mwait) */ DEFINE_STATIC_KEY_FALSE(mds_idle_clear); EXPORT_SYMBOL_GPL(mds_idle_clear); @@ -252,7 +249,7 @@ static void __init mds_select_mitigation(void) if (!boot_cpu_has(X86_FEATURE_MD_CLEAR)) mds_mitigation = MDS_MITIGATION_VMWERV; - static_branch_enable(&mds_user_clear); + setup_force_cpu_cap(X86_FEATURE_CLEAR_CPU_BUF); if (!boot_cpu_has(X86_BUG_MSBDS_ONLY) && (mds_nosmt || cpu_mitigations_auto_nosmt())) @@ -356,7 +353,7 @@ static void __init taa_select_mitigation(void) * For guests that can't determine whether the correct microcode is * present on host, enable the mitigation for UCODE_NEEDED as well. */ - static_branch_enable(&mds_user_clear); + setup_force_cpu_cap(X86_FEATURE_CLEAR_CPU_BUF); if (taa_nosmt || cpu_mitigations_auto_nosmt()) cpu_smt_disable(false); @@ -424,7 +421,14 @@ static void __init mmio_select_mitigation(void) */ if (boot_cpu_has_bug(X86_BUG_MDS) || (boot_cpu_has_bug(X86_BUG_TAA) && boot_cpu_has(X86_FEATURE_RTM))) - static_branch_enable(&mds_user_clear); + setup_force_cpu_cap(X86_FEATURE_CLEAR_CPU_BUF); + + /* + * X86_FEATURE_CLEAR_CPU_BUF could be enabled by other VERW based + * mitigations, disable KVM-only mitigation in that case. + */ + if (boot_cpu_has(X86_FEATURE_CLEAR_CPU_BUF)) + static_branch_disable(&mmio_stale_data_clear); else static_branch_enable(&mmio_stale_data_clear); @@ -477,6 +481,57 @@ static int __init mmio_stale_data_parse_cmdline(char *str) early_param("mmio_stale_data", mmio_stale_data_parse_cmdline); #undef pr_fmt +#define pr_fmt(fmt) "Register File Data Sampling: " fmt + +enum rfds_mitigations { + RFDS_MITIGATION_OFF, + RFDS_MITIGATION_VERW, + RFDS_MITIGATION_UCODE_NEEDED, +}; + +/* Default mitigation for Register File Data Sampling */ +static enum rfds_mitigations rfds_mitigation __ro_after_init = + IS_ENABLED(CONFIG_MITIGATION_RFDS) ? RFDS_MITIGATION_VERW : RFDS_MITIGATION_OFF; + +static const char * const rfds_strings[] = { + [RFDS_MITIGATION_OFF] = "Vulnerable", + [RFDS_MITIGATION_VERW] = "Mitigation: Clear Register File", + [RFDS_MITIGATION_UCODE_NEEDED] = "Vulnerable: No microcode", +}; + +static void __init rfds_select_mitigation(void) +{ + if (!boot_cpu_has_bug(X86_BUG_RFDS) || cpu_mitigations_off()) { + rfds_mitigation = RFDS_MITIGATION_OFF; + return; + } + if (rfds_mitigation == RFDS_MITIGATION_OFF) + return; + + if (x86_read_arch_cap_msr() & ARCH_CAP_RFDS_CLEAR) + setup_force_cpu_cap(X86_FEATURE_CLEAR_CPU_BUF); + else + rfds_mitigation = RFDS_MITIGATION_UCODE_NEEDED; +} + +static __init int rfds_parse_cmdline(char *str) +{ + if (!str) + return -EINVAL; + + if (!boot_cpu_has_bug(X86_BUG_RFDS)) + return 0; + + if (!strcmp(str, "off")) + rfds_mitigation = RFDS_MITIGATION_OFF; + else if (!strcmp(str, "on")) + rfds_mitigation = RFDS_MITIGATION_VERW; + + return 0; +} +early_param("reg_file_data_sampling", rfds_parse_cmdline); + +#undef pr_fmt #define pr_fmt(fmt) "" fmt static void __init md_clear_update_mitigation(void) @@ -484,12 +539,12 @@ static void __init md_clear_update_mitigation(void) if (cpu_mitigations_off()) return; - if (!static_key_enabled(&mds_user_clear)) + if (!boot_cpu_has(X86_FEATURE_CLEAR_CPU_BUF)) goto out; /* - * mds_user_clear is now enabled. Update MDS, TAA and MMIO Stale Data - * mitigation, if necessary. + * X86_FEATURE_CLEAR_CPU_BUF is now enabled. Update MDS, TAA and MMIO + * Stale Data mitigation, if necessary. */ if (mds_mitigation == MDS_MITIGATION_OFF && boot_cpu_has_bug(X86_BUG_MDS)) { @@ -501,11 +556,19 @@ static void __init md_clear_update_mitigation(void) taa_mitigation = TAA_MITIGATION_VERW; taa_select_mitigation(); } - if (mmio_mitigation == MMIO_MITIGATION_OFF && - boot_cpu_has_bug(X86_BUG_MMIO_STALE_DATA)) { + /* + * MMIO_MITIGATION_OFF is not checked here so that mmio_stale_data_clear + * gets updated correctly as per X86_FEATURE_CLEAR_CPU_BUF state. + */ + if (boot_cpu_has_bug(X86_BUG_MMIO_STALE_DATA)) { mmio_mitigation = MMIO_MITIGATION_VERW; mmio_select_mitigation(); } + if (rfds_mitigation == RFDS_MITIGATION_OFF && + boot_cpu_has_bug(X86_BUG_RFDS)) { + rfds_mitigation = RFDS_MITIGATION_VERW; + rfds_select_mitigation(); + } out: if (boot_cpu_has_bug(X86_BUG_MDS)) pr_info("MDS: %s\n", mds_strings[mds_mitigation]); @@ -515,6 +578,8 @@ out: pr_info("MMIO Stale Data: %s\n", mmio_strings[mmio_mitigation]); else if (boot_cpu_has_bug(X86_BUG_MMIO_UNKNOWN)) pr_info("MMIO Stale Data: Unknown: No mitigations\n"); + if (boot_cpu_has_bug(X86_BUG_RFDS)) + pr_info("Register File Data Sampling: %s\n", rfds_strings[rfds_mitigation]); } static void __init md_clear_select_mitigation(void) @@ -522,11 +587,12 @@ static void __init md_clear_select_mitigation(void) mds_select_mitigation(); taa_select_mitigation(); mmio_select_mitigation(); + rfds_select_mitigation(); /* - * As MDS, TAA and MMIO Stale Data mitigations are inter-related, update - * and print their mitigation after MDS, TAA and MMIO Stale Data - * mitigation selection is done. + * As these mitigations are inter-related and rely on VERW instruction + * to clear the microarchitural buffers, update and print their status + * after mitigation selection is done for each of these vulnerabilities. */ md_clear_update_mitigation(); } @@ -671,7 +737,7 @@ enum gds_mitigations { GDS_MITIGATION_HYPERVISOR, }; -#if IS_ENABLED(CONFIG_GDS_FORCE_MITIGATION) +#if IS_ENABLED(CONFIG_MITIGATION_GDS_FORCE) static enum gds_mitigations gds_mitigation __ro_after_init = GDS_MITIGATION_FORCE; #else static enum gds_mitigations gds_mitigation __ro_after_init = GDS_MITIGATION_FULL; @@ -982,10 +1048,10 @@ static void __init retbleed_select_mitigation(void) return; case RETBLEED_CMD_UNRET: - if (IS_ENABLED(CONFIG_CPU_UNRET_ENTRY)) { + if (IS_ENABLED(CONFIG_MITIGATION_UNRET_ENTRY)) { retbleed_mitigation = RETBLEED_MITIGATION_UNRET; } else { - pr_err("WARNING: kernel not compiled with CPU_UNRET_ENTRY.\n"); + pr_err("WARNING: kernel not compiled with MITIGATION_UNRET_ENTRY.\n"); goto do_cmd_auto; } break; @@ -994,24 +1060,24 @@ static void __init retbleed_select_mitigation(void) if (!boot_cpu_has(X86_FEATURE_IBPB)) { pr_err("WARNING: CPU does not support IBPB.\n"); goto do_cmd_auto; - } else if (IS_ENABLED(CONFIG_CPU_IBPB_ENTRY)) { + } else if (IS_ENABLED(CONFIG_MITIGATION_IBPB_ENTRY)) { retbleed_mitigation = RETBLEED_MITIGATION_IBPB; } else { - pr_err("WARNING: kernel not compiled with CPU_IBPB_ENTRY.\n"); + pr_err("WARNING: kernel not compiled with MITIGATION_IBPB_ENTRY.\n"); goto do_cmd_auto; } break; case RETBLEED_CMD_STUFF: - if (IS_ENABLED(CONFIG_CALL_DEPTH_TRACKING) && + if (IS_ENABLED(CONFIG_MITIGATION_CALL_DEPTH_TRACKING) && spectre_v2_enabled == SPECTRE_V2_RETPOLINE) { retbleed_mitigation = RETBLEED_MITIGATION_STUFF; } else { - if (IS_ENABLED(CONFIG_CALL_DEPTH_TRACKING)) + if (IS_ENABLED(CONFIG_MITIGATION_CALL_DEPTH_TRACKING)) pr_err("WARNING: retbleed=stuff depends on spectre_v2=retpoline\n"); else - pr_err("WARNING: kernel not compiled with CALL_DEPTH_TRACKING.\n"); + pr_err("WARNING: kernel not compiled with MITIGATION_CALL_DEPTH_TRACKING.\n"); goto do_cmd_auto; } @@ -1021,9 +1087,10 @@ do_cmd_auto: case RETBLEED_CMD_AUTO: if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD || boot_cpu_data.x86_vendor == X86_VENDOR_HYGON) { - if (IS_ENABLED(CONFIG_CPU_UNRET_ENTRY)) + if (IS_ENABLED(CONFIG_MITIGATION_UNRET_ENTRY)) retbleed_mitigation = RETBLEED_MITIGATION_UNRET; - else if (IS_ENABLED(CONFIG_CPU_IBPB_ENTRY) && boot_cpu_has(X86_FEATURE_IBPB)) + else if (IS_ENABLED(CONFIG_MITIGATION_IBPB_ENTRY) && + boot_cpu_has(X86_FEATURE_IBPB)) retbleed_mitigation = RETBLEED_MITIGATION_IBPB; } @@ -1102,7 +1169,7 @@ static enum spectre_v2_user_mitigation spectre_v2_user_stibp __ro_after_init = static enum spectre_v2_user_mitigation spectre_v2_user_ibpb __ro_after_init = SPECTRE_V2_USER_NONE; -#ifdef CONFIG_RETPOLINE +#ifdef CONFIG_MITIGATION_RETPOLINE static bool spectre_v2_bad_module; bool retpoline_module_ok(bool has_retpoline) @@ -1415,7 +1482,7 @@ static enum spectre_v2_mitigation_cmd __init spectre_v2_parse_cmdline(void) cmd == SPECTRE_V2_CMD_RETPOLINE_GENERIC || cmd == SPECTRE_V2_CMD_EIBRS_LFENCE || cmd == SPECTRE_V2_CMD_EIBRS_RETPOLINE) && - !IS_ENABLED(CONFIG_RETPOLINE)) { + !IS_ENABLED(CONFIG_MITIGATION_RETPOLINE)) { pr_err("%s selected but not compiled in. Switching to AUTO select\n", mitigation_options[i].option); return SPECTRE_V2_CMD_AUTO; @@ -1438,7 +1505,7 @@ static enum spectre_v2_mitigation_cmd __init spectre_v2_parse_cmdline(void) return SPECTRE_V2_CMD_AUTO; } - if (cmd == SPECTRE_V2_CMD_IBRS && !IS_ENABLED(CONFIG_CPU_IBRS_ENTRY)) { + if (cmd == SPECTRE_V2_CMD_IBRS && !IS_ENABLED(CONFIG_MITIGATION_IBRS_ENTRY)) { pr_err("%s selected but not compiled in. Switching to AUTO select\n", mitigation_options[i].option); return SPECTRE_V2_CMD_AUTO; @@ -1469,7 +1536,7 @@ static enum spectre_v2_mitigation_cmd __init spectre_v2_parse_cmdline(void) static enum spectre_v2_mitigation __init spectre_v2_select_retpoline(void) { - if (!IS_ENABLED(CONFIG_RETPOLINE)) { + if (!IS_ENABLED(CONFIG_MITIGATION_RETPOLINE)) { pr_err("Kernel not compiled with retpoline; no mitigation available!"); return SPECTRE_V2_NONE; } @@ -1564,7 +1631,7 @@ static void __init spectre_v2_select_mitigation(void) break; } - if (IS_ENABLED(CONFIG_CPU_IBRS_ENTRY) && + if (IS_ENABLED(CONFIG_MITIGATION_IBRS_ENTRY) && boot_cpu_has_bug(X86_BUG_RETBLEED) && retbleed_cmd != RETBLEED_CMD_OFF && retbleed_cmd != RETBLEED_CMD_STUFF && @@ -2457,7 +2524,7 @@ static void __init srso_select_mitigation(void) break; case SRSO_CMD_SAFE_RET: - if (IS_ENABLED(CONFIG_CPU_SRSO)) { + if (IS_ENABLED(CONFIG_MITIGATION_SRSO)) { /* * Enable the return thunk for generated code * like ftrace, static_call, etc. @@ -2477,29 +2544,29 @@ static void __init srso_select_mitigation(void) else srso_mitigation = SRSO_MITIGATION_SAFE_RET_UCODE_NEEDED; } else { - pr_err("WARNING: kernel not compiled with CPU_SRSO.\n"); + pr_err("WARNING: kernel not compiled with MITIGATION_SRSO.\n"); } break; case SRSO_CMD_IBPB: - if (IS_ENABLED(CONFIG_CPU_IBPB_ENTRY)) { + if (IS_ENABLED(CONFIG_MITIGATION_IBPB_ENTRY)) { if (has_microcode) { setup_force_cpu_cap(X86_FEATURE_ENTRY_IBPB); srso_mitigation = SRSO_MITIGATION_IBPB; } } else { - pr_err("WARNING: kernel not compiled with CPU_IBPB_ENTRY.\n"); + pr_err("WARNING: kernel not compiled with MITIGATION_IBPB_ENTRY.\n"); } break; case SRSO_CMD_IBPB_ON_VMEXIT: - if (IS_ENABLED(CONFIG_CPU_SRSO)) { + if (IS_ENABLED(CONFIG_MITIGATION_SRSO)) { if (!boot_cpu_has(X86_FEATURE_ENTRY_IBPB) && has_microcode) { setup_force_cpu_cap(X86_FEATURE_IBPB_ON_VMEXIT); srso_mitigation = SRSO_MITIGATION_IBPB_ON_VMEXIT; } } else { - pr_err("WARNING: kernel not compiled with CPU_SRSO.\n"); + pr_err("WARNING: kernel not compiled with MITIGATION_SRSO.\n"); } break; } @@ -2615,6 +2682,11 @@ static ssize_t mmio_stale_data_show_state(char *buf) sched_smt_active() ? "vulnerable" : "disabled"); } +static ssize_t rfds_show_state(char *buf) +{ + return sysfs_emit(buf, "%s\n", rfds_strings[rfds_mitigation]); +} + static char *stibp_state(void) { if (spectre_v2_in_eibrs_mode(spectre_v2_enabled) && @@ -2774,6 +2846,9 @@ static ssize_t cpu_show_common(struct device *dev, struct device_attribute *attr case X86_BUG_GDS: return gds_show_state(buf); + case X86_BUG_RFDS: + return rfds_show_state(buf); + default: break; } @@ -2848,4 +2923,14 @@ ssize_t cpu_show_gds(struct device *dev, struct device_attribute *attr, char *bu { return cpu_show_common(dev, attr, buf, X86_BUG_GDS); } + +ssize_t cpu_show_reg_file_data_sampling(struct device *dev, struct device_attribute *attr, char *buf) +{ + return cpu_show_common(dev, attr, buf, X86_BUG_RFDS); +} #endif + +void __warn_thunk(void) +{ + WARN_ONCE(1, "Unpatched return thunk in use. This should not happen!\n"); +} diff --git a/arch/x86/kernel/cpu/cacheinfo.c b/arch/x86/kernel/cpu/cacheinfo.c index c131c412db89..392d09c936d6 100644 --- a/arch/x86/kernel/cpu/cacheinfo.c +++ b/arch/x86/kernel/cpu/cacheinfo.c @@ -301,7 +301,7 @@ amd_cpuid4(int leaf, union _cpuid4_leaf_eax *eax, eax->split.type = types[leaf]; eax->split.level = levels[leaf]; eax->split.num_threads_sharing = 0; - eax->split.num_cores_on_die = __this_cpu_read(cpu_info.x86_max_cores) - 1; + eax->split.num_cores_on_die = topology_num_cores_per_package(); if (assoc == 0xffff) @@ -595,7 +595,7 @@ static void amd_init_l3_cache(struct _cpuid4_info_regs *this_leaf, int index) if (index < 3) return; - node = topology_die_id(smp_processor_id()); + node = topology_amd_node_id(smp_processor_id()); this_leaf->nb = node_to_amd_nb(node); if (this_leaf->nb && !this_leaf->nb->l3_cache.indices) amd_calc_l3_indices(this_leaf->nb); @@ -661,7 +661,7 @@ static int find_num_cache_leaves(struct cpuinfo_x86 *c) return i; } -void cacheinfo_amd_init_llc_id(struct cpuinfo_x86 *c) +void cacheinfo_amd_init_llc_id(struct cpuinfo_x86 *c, u16 die_id) { /* * We may have multiple LLCs if L3 caches exist, so check if we @@ -672,7 +672,7 @@ void cacheinfo_amd_init_llc_id(struct cpuinfo_x86 *c) if (c->x86 < 0x17) { /* LLC is at the node level. */ - c->topo.llc_id = c->topo.die_id; + c->topo.llc_id = die_id; } else if (c->x86 == 0x17 && c->x86_model <= 0x1F) { /* * LLC is at the core complex level. @@ -1118,15 +1118,16 @@ static void cache_cpu_init(void) unsigned long flags; local_irq_save(flags); - cache_disable(); - if (memory_caching_control & CACHE_MTRR) + if (memory_caching_control & CACHE_MTRR) { + cache_disable(); mtrr_generic_set_state(); + cache_enable(); + } if (memory_caching_control & CACHE_PAT) pat_cpu_init(); - cache_enable(); local_irq_restore(flags); } diff --git a/arch/x86/kernel/cpu/centaur.c b/arch/x86/kernel/cpu/centaur.c index 345f7d905db6..a3b55db35c96 100644 --- a/arch/x86/kernel/cpu/centaur.c +++ b/arch/x86/kernel/cpu/centaur.c @@ -128,10 +128,6 @@ static void init_centaur(struct cpuinfo_x86 *c) #endif early_init_centaur(c); init_intel_cacheinfo(c); - detect_num_cpu_cores(c); -#ifdef CONFIG_X86_32 - detect_ht(c); -#endif if (c->cpuid_level > 9) { unsigned int eax = cpuid_eax(10); diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 0b97bcde70c6..ba8cf5e9ce56 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -61,6 +61,7 @@ #include <asm/microcode.h> #include <asm/intel-family.h> #include <asm/cpu_device_id.h> +#include <asm/fred.h> #include <asm/uv/uv.h> #include <asm/ia32.h> #include <asm/set_memory.h> @@ -70,11 +71,26 @@ #include "cpu.h" +DEFINE_PER_CPU_READ_MOSTLY(struct cpuinfo_x86, cpu_info); +EXPORT_PER_CPU_SYMBOL(cpu_info); + u32 elf_hwcap2 __read_mostly; /* Number of siblings per CPU package */ -int smp_num_siblings = 1; -EXPORT_SYMBOL(smp_num_siblings); +unsigned int __max_threads_per_core __ro_after_init = 1; +EXPORT_SYMBOL(__max_threads_per_core); + +unsigned int __max_dies_per_package __ro_after_init = 1; +EXPORT_SYMBOL(__max_dies_per_package); + +unsigned int __max_logical_packages __ro_after_init = 1; +EXPORT_SYMBOL(__max_logical_packages); + +unsigned int __num_cores_per_package __ro_after_init = 1; +EXPORT_SYMBOL(__num_cores_per_package); + +unsigned int __num_threads_per_package __ro_after_init = 1; +EXPORT_SYMBOL(__num_threads_per_package); static struct ppin_info { int feature; @@ -382,9 +398,8 @@ out: } /* These bits should not change their value after CPU init is finished. */ -static const unsigned long cr4_pinned_mask = - X86_CR4_SMEP | X86_CR4_SMAP | X86_CR4_UMIP | - X86_CR4_FSGSBASE | X86_CR4_CET; +static const unsigned long cr4_pinned_mask = X86_CR4_SMEP | X86_CR4_SMAP | X86_CR4_UMIP | + X86_CR4_FSGSBASE | X86_CR4_CET | X86_CR4_FRED; static DEFINE_STATIC_KEY_FALSE_RO(cr_pinning); static unsigned long cr4_pinned_bits __ro_after_init; @@ -790,19 +805,6 @@ static void get_model_name(struct cpuinfo_x86 *c) *(s + 1) = '\0'; } -void detect_num_cpu_cores(struct cpuinfo_x86 *c) -{ - unsigned int eax, ebx, ecx, edx; - - c->x86_max_cores = 1; - if (!IS_ENABLED(CONFIG_SMP) || c->cpuid_level < 4) - return; - - cpuid_count(4, 0, &eax, &ebx, &ecx, &edx); - if (eax & 0x1f) - c->x86_max_cores = (eax >> 26) + 1; -} - void cpu_detect_cache_sizes(struct cpuinfo_x86 *c) { unsigned int n, dummy, ebx, ecx, edx, l2size; @@ -864,51 +866,6 @@ static void cpu_detect_tlb(struct cpuinfo_x86 *c) tlb_lld_4m[ENTRIES], tlb_lld_1g[ENTRIES]); } -int detect_ht_early(struct cpuinfo_x86 *c) -{ -#ifdef CONFIG_SMP - u32 eax, ebx, ecx, edx; - - if (!cpu_has(c, X86_FEATURE_HT)) - return -1; - - if (cpu_has(c, X86_FEATURE_CMP_LEGACY)) - return -1; - - if (cpu_has(c, X86_FEATURE_XTOPOLOGY)) - return -1; - - cpuid(1, &eax, &ebx, &ecx, &edx); - - smp_num_siblings = (ebx & 0xff0000) >> 16; - if (smp_num_siblings == 1) - pr_info_once("CPU0: Hyper-Threading is disabled\n"); -#endif - return 0; -} - -void detect_ht(struct cpuinfo_x86 *c) -{ -#ifdef CONFIG_SMP - int index_msb, core_bits; - - if (detect_ht_early(c) < 0) - return; - - index_msb = get_count_order(smp_num_siblings); - c->topo.pkg_id = apic->phys_pkg_id(c->topo.initial_apicid, index_msb); - - smp_num_siblings = smp_num_siblings / c->x86_max_cores; - - index_msb = get_count_order(smp_num_siblings); - - core_bits = get_count_order(c->x86_max_cores); - - c->topo.core_id = apic->phys_pkg_id(c->topo.initial_apicid, index_msb) & - ((1 << core_bits) - 1); -#endif -} - static void get_cpu_vendor(struct cpuinfo_x86 *c) { char *v = c->x86_vendor_id; @@ -1267,6 +1224,8 @@ static const __initconst struct x86_cpu_id cpu_vuln_whitelist[] = { #define SRSO BIT(5) /* CPU is affected by GDS */ #define GDS BIT(6) +/* CPU is affected by Register File Data Sampling */ +#define RFDS BIT(7) static const struct x86_cpu_id cpu_vuln_blacklist[] __initconst = { VULNBL_INTEL_STEPPINGS(IVYBRIDGE, X86_STEPPING_ANY, SRBDS), @@ -1294,9 +1253,18 @@ static const struct x86_cpu_id cpu_vuln_blacklist[] __initconst = { VULNBL_INTEL_STEPPINGS(TIGERLAKE, X86_STEPPING_ANY, GDS), VULNBL_INTEL_STEPPINGS(LAKEFIELD, X86_STEPPING_ANY, MMIO | MMIO_SBDS | RETBLEED), VULNBL_INTEL_STEPPINGS(ROCKETLAKE, X86_STEPPING_ANY, MMIO | RETBLEED | GDS), - VULNBL_INTEL_STEPPINGS(ATOM_TREMONT, X86_STEPPING_ANY, MMIO | MMIO_SBDS), - VULNBL_INTEL_STEPPINGS(ATOM_TREMONT_D, X86_STEPPING_ANY, MMIO), - VULNBL_INTEL_STEPPINGS(ATOM_TREMONT_L, X86_STEPPING_ANY, MMIO | MMIO_SBDS), + VULNBL_INTEL_STEPPINGS(ALDERLAKE, X86_STEPPING_ANY, RFDS), + VULNBL_INTEL_STEPPINGS(ALDERLAKE_L, X86_STEPPING_ANY, RFDS), + VULNBL_INTEL_STEPPINGS(RAPTORLAKE, X86_STEPPING_ANY, RFDS), + VULNBL_INTEL_STEPPINGS(RAPTORLAKE_P, X86_STEPPING_ANY, RFDS), + VULNBL_INTEL_STEPPINGS(RAPTORLAKE_S, X86_STEPPING_ANY, RFDS), + VULNBL_INTEL_STEPPINGS(ATOM_GRACEMONT, X86_STEPPING_ANY, RFDS), + VULNBL_INTEL_STEPPINGS(ATOM_TREMONT, X86_STEPPING_ANY, MMIO | MMIO_SBDS | RFDS), + VULNBL_INTEL_STEPPINGS(ATOM_TREMONT_D, X86_STEPPING_ANY, MMIO | RFDS), + VULNBL_INTEL_STEPPINGS(ATOM_TREMONT_L, X86_STEPPING_ANY, MMIO | MMIO_SBDS | RFDS), + VULNBL_INTEL_STEPPINGS(ATOM_GOLDMONT, X86_STEPPING_ANY, RFDS), + VULNBL_INTEL_STEPPINGS(ATOM_GOLDMONT_D, X86_STEPPING_ANY, RFDS), + VULNBL_INTEL_STEPPINGS(ATOM_GOLDMONT_PLUS, X86_STEPPING_ANY, RFDS), VULNBL_AMD(0x15, RETBLEED), VULNBL_AMD(0x16, RETBLEED), @@ -1330,6 +1298,24 @@ static bool arch_cap_mmio_immune(u64 ia32_cap) ia32_cap & ARCH_CAP_SBDR_SSDP_NO); } +static bool __init vulnerable_to_rfds(u64 ia32_cap) +{ + /* The "immunity" bit trumps everything else: */ + if (ia32_cap & ARCH_CAP_RFDS_NO) + return false; + + /* + * VMMs set ARCH_CAP_RFDS_CLEAR for processors not in the blacklist to + * indicate that mitigation is needed because guest is running on a + * vulnerable hardware or may migrate to such hardware: + */ + if (ia32_cap & ARCH_CAP_RFDS_CLEAR) + return true; + + /* Only consult the blacklist when there is no enumeration: */ + return cpu_matches(cpu_vuln_blacklist, RFDS); +} + static void __init cpu_set_bug_bits(struct cpuinfo_x86 *c) { u64 ia32_cap = x86_read_arch_cap_msr(); @@ -1355,8 +1341,13 @@ static void __init cpu_set_bug_bits(struct cpuinfo_x86 *c) /* * AMD's AutoIBRS is equivalent to Intel's eIBRS - use the Intel feature * flag and protect from vendor-specific bugs via the whitelist. + * + * Don't use AutoIBRS when SNP is enabled because it degrades host + * userspace indirect branch performance. */ - if ((ia32_cap & ARCH_CAP_IBRS_ALL) || cpu_has(c, X86_FEATURE_AUTOIBRS)) { + if ((ia32_cap & ARCH_CAP_IBRS_ALL) || + (cpu_has(c, X86_FEATURE_AUTOIBRS) && + !cpu_feature_enabled(X86_FEATURE_SEV_SNP))) { setup_force_cpu_cap(X86_FEATURE_IBRS_ENHANCED); if (!cpu_matches(cpu_vuln_whitelist, NO_EIBRS_PBRSB) && !(ia32_cap & ARCH_CAP_PBRSB_NO)) @@ -1441,6 +1432,9 @@ static void __init cpu_set_bug_bits(struct cpuinfo_x86 *c) boot_cpu_has(X86_FEATURE_AVX)) setup_force_cpu_bug(X86_BUG_GDS); + if (vulnerable_to_rfds(ia32_cap)) + setup_force_cpu_bug(X86_BUG_RFDS); + if (cpu_matches(cpu_vuln_whitelist, NO_MELTDOWN)) return; @@ -1589,8 +1583,11 @@ static void __init early_identify_cpu(struct cpuinfo_x86 *c) get_cpu_vendor(c); get_cpu_cap(c); setup_force_cpu_cap(X86_FEATURE_CPUID); + get_cpu_address_sizes(c); cpu_parse_early_param(); + cpu_init_topology(c); + if (this_cpu->c_early_init) this_cpu->c_early_init(c); @@ -1601,10 +1598,10 @@ static void __init early_identify_cpu(struct cpuinfo_x86 *c) this_cpu->c_bsp_init(c); } else { setup_clear_cpu_cap(X86_FEATURE_CPUID); + get_cpu_address_sizes(c); + cpu_init_topology(c); } - get_cpu_address_sizes(c); - setup_force_cpu_cap(X86_FEATURE_ALWAYS); cpu_set_bug_bits(c); @@ -1748,18 +1745,6 @@ static void generic_identify(struct cpuinfo_x86 *c) get_cpu_address_sizes(c); - if (c->cpuid_level >= 0x00000001) { - c->topo.initial_apicid = (cpuid_ebx(1) >> 24) & 0xFF; -#ifdef CONFIG_X86_32 -# ifdef CONFIG_SMP - c->topo.apicid = apic->phys_pkg_id(c->topo.initial_apicid, 0); -# else - c->topo.apicid = c->topo.initial_apicid; -# endif -#endif - c->topo.pkg_id = c->topo.initial_apicid; - } - get_model_name(c); /* Default name */ /* @@ -1781,29 +1766,6 @@ static void generic_identify(struct cpuinfo_x86 *c) } /* - * Validate that ACPI/mptables have the same information about the - * effective APIC id and update the package map. - */ -static void validate_apic_and_package_id(struct cpuinfo_x86 *c) -{ -#ifdef CONFIG_SMP - unsigned int cpu = smp_processor_id(); - u32 apicid; - - apicid = apic->cpu_present_to_apicid(cpu); - - if (apicid != c->topo.apicid) { - pr_err(FW_BUG "CPU%u: APIC id mismatch. Firmware: %x APIC: %x\n", - cpu, apicid, c->topo.initial_apicid); - } - BUG_ON(topology_update_package_map(c->topo.pkg_id, cpu)); - BUG_ON(topology_update_die_map(c->topo.die_id, cpu)); -#else - c->topo.logical_pkg_id = 0; -#endif -} - -/* * This does the hard work of actually picking apart the CPU stuff... */ static void identify_cpu(struct cpuinfo_x86 *c) @@ -1816,11 +1778,6 @@ static void identify_cpu(struct cpuinfo_x86 *c) c->x86_model = c->x86_stepping = 0; /* So far unknown... */ c->x86_vendor_id[0] = '\0'; /* Unset */ c->x86_model_id[0] = '\0'; /* Unset */ - c->x86_max_cores = 1; - c->x86_coreid_bits = 0; - c->topo.cu_id = 0xff; - c->topo.llc_id = BAD_APICID; - c->topo.l2c_id = BAD_APICID; #ifdef CONFIG_X86_64 c->x86_clflush_size = 64; c->x86_phys_bits = 36; @@ -1839,17 +1796,14 @@ static void identify_cpu(struct cpuinfo_x86 *c) generic_identify(c); + cpu_parse_topology(c); + if (this_cpu->c_identify) this_cpu->c_identify(c); /* Clear/Set all flags overridden by options, after probe */ apply_forced_caps(c); -#ifdef CONFIG_X86_64 - c->topo.apicid = apic->phys_pkg_id(c->topo.initial_apicid, 0); -#endif - - /* * Set default APIC and TSC_DEADLINE MSR fencing flag. AMD and * Hygon will clear it in ->c_init() below. @@ -1903,10 +1857,6 @@ static void identify_cpu(struct cpuinfo_x86 *c) c->x86, c->x86_model); } -#ifdef CONFIG_X86_64 - detect_ht(c); -#endif - x86_init_rdrand(c); setup_pku(c); setup_cet(c); @@ -1938,8 +1888,6 @@ static void identify_cpu(struct cpuinfo_x86 *c) /* Init Machine Check Exception if available. */ mcheck_cpu_init(c); - select_idle_routine(c); - #ifdef CONFIG_NUMA numa_add_cpu(smp_processor_id()); #endif @@ -1998,7 +1946,6 @@ void identify_secondary_cpu(struct cpuinfo_x86 *c) #ifdef CONFIG_X86_32 enable_sep_cpu(); #endif - validate_apic_and_package_id(c); x86_spec_ctrl_setup_ap(); update_srbds_msr(); if (boot_cpu_has_bug(X86_BUG_GDS)) @@ -2050,6 +1997,7 @@ DEFINE_PER_CPU_ALIGNED(struct pcpu_hot, pcpu_hot) = { .top_of_stack = TOP_OF_INIT_STACK, }; EXPORT_PER_CPU_SYMBOL(pcpu_hot); +EXPORT_PER_CPU_SYMBOL(const_pcpu_hot); #ifdef CONFIG_X86_64 DEFINE_PER_CPU_FIRST(struct fixed_percpu_data, @@ -2067,10 +2015,8 @@ static void wrmsrl_cstar(unsigned long val) wrmsrl(MSR_CSTAR, val); } -/* May not be marked __init: used by software suspend */ -void syscall_init(void) +static inline void idt_syscall_init(void) { - wrmsr(MSR_STAR, 0, (__USER32_CS << 16) | __KERNEL_CS); wrmsrl(MSR_LSTAR, (unsigned long)entry_SYSCALL_64); if (ia32_enabled()) { @@ -2104,6 +2050,23 @@ void syscall_init(void) X86_EFLAGS_AC|X86_EFLAGS_ID); } +/* May not be marked __init: used by software suspend */ +void syscall_init(void) +{ + /* The default user and kernel segments */ + wrmsr(MSR_STAR, 0, (__USER32_CS << 16) | __KERNEL_CS); + + /* + * Except the IA32_STAR MSR, there is NO need to setup SYSCALL and + * SYSENTER MSRs for FRED, because FRED uses the ring 3 FRED + * entrypoint for SYSCALL and SYSENTER, and ERETU is the only legit + * instruction to return to ring 3 (both sysexit and sysret cause + * #UD when FRED is enabled). + */ + if (!cpu_feature_enabled(X86_FEATURE_FRED)) + idt_syscall_init(); +} + #else /* CONFIG_X86_64 */ #ifdef CONFIG_STACKPROTECTOR @@ -2207,8 +2170,9 @@ void cpu_init_exception_handling(void) /* paranoid_entry() gets the CPU number from the GDT */ setup_getcpu(cpu); - /* IST vectors need TSS to be set up. */ - tss_setup_ist(tss); + /* For IDT mode, IST vectors need to be set in TSS. */ + if (!cpu_feature_enabled(X86_FEATURE_FRED)) + tss_setup_ist(tss); tss_setup_io_bitmap(tss); set_tss_desc(cpu, &get_cpu_entry_area(cpu)->tss.x86_tss); @@ -2217,8 +2181,10 @@ void cpu_init_exception_handling(void) /* GHCB needs to be setup to handle #VC. */ setup_ghcb(); - /* Finally load the IDT */ - load_current_idt(); + if (cpu_feature_enabled(X86_FEATURE_FRED)) + cpu_init_fred_exceptions(); + else + load_current_idt(); } /* @@ -2343,11 +2309,13 @@ void __init arch_cpu_finalize_init(void) { identify_boot_cpu(); + select_idle_routine(); + /* * identify_boot_cpu() initialized SMT support information, let the * core code know. */ - cpu_smt_set_num_threads(smp_num_siblings, smp_num_siblings); + cpu_smt_set_num_threads(__max_threads_per_core, __max_threads_per_core); if (!IS_ENABLED(CONFIG_SMP)) { pr_info("CPU: "); diff --git a/arch/x86/kernel/cpu/cpu.h b/arch/x86/kernel/cpu/cpu.h index 885281ae79a5..ea9e07d57c8d 100644 --- a/arch/x86/kernel/cpu/cpu.h +++ b/arch/x86/kernel/cpu/cpu.h @@ -2,6 +2,11 @@ #ifndef ARCH_X86_CPU_H #define ARCH_X86_CPU_H +#include <asm/cpu.h> +#include <asm/topology.h> + +#include "topology.h" + /* attempt to consolidate cpu attributes */ struct cpu_dev { const char *c_vendor; @@ -71,14 +76,9 @@ extern void init_intel_cacheinfo(struct cpuinfo_x86 *c); extern void init_amd_cacheinfo(struct cpuinfo_x86 *c); extern void init_hygon_cacheinfo(struct cpuinfo_x86 *c); -extern void detect_num_cpu_cores(struct cpuinfo_x86 *c); -extern int detect_extended_topology_early(struct cpuinfo_x86 *c); -extern int detect_extended_topology(struct cpuinfo_x86 *c); -extern int detect_ht_early(struct cpuinfo_x86 *c); -extern void detect_ht(struct cpuinfo_x86 *c); extern void check_null_seg_clears_base(struct cpuinfo_x86 *c); -void cacheinfo_amd_init_llc_id(struct cpuinfo_x86 *c); +void cacheinfo_amd_init_llc_id(struct cpuinfo_x86 *c, u16 die_id); void cacheinfo_hygon_init_llc_id(struct cpuinfo_x86 *c); unsigned int aperfmperf_get_khz(int cpu); @@ -96,4 +96,5 @@ static inline bool spectre_v2_in_eibrs_mode(enum spectre_v2_mitigation mode) mode == SPECTRE_V2_EIBRS_RETPOLINE || mode == SPECTRE_V2_EIBRS_LFENCE; } + #endif /* ARCH_X86_CPU_H */ diff --git a/arch/x86/kernel/cpu/cpuid-deps.c b/arch/x86/kernel/cpu/cpuid-deps.c index e462c1d3800a..b7174209d855 100644 --- a/arch/x86/kernel/cpu/cpuid-deps.c +++ b/arch/x86/kernel/cpu/cpuid-deps.c @@ -82,6 +82,8 @@ static const struct cpuid_dep cpuid_deps[] = { { X86_FEATURE_XFD, X86_FEATURE_XGETBV1 }, { X86_FEATURE_AMX_TILE, X86_FEATURE_XFD }, { X86_FEATURE_SHSTK, X86_FEATURE_XSAVES }, + { X86_FEATURE_FRED, X86_FEATURE_LKGS }, + { X86_FEATURE_FRED, X86_FEATURE_WRMSRNS }, {} }; diff --git a/arch/x86/kernel/cpu/debugfs.c b/arch/x86/kernel/cpu/debugfs.c index 0c179d684b3b..3baf3e435834 100644 --- a/arch/x86/kernel/cpu/debugfs.c +++ b/arch/x86/kernel/cpu/debugfs.c @@ -5,6 +5,8 @@ #include <asm/apic.h> #include <asm/processor.h> +#include "cpu.h" + static int cpu_debug_show(struct seq_file *m, void *p) { unsigned long cpu = (unsigned long)m->private; @@ -24,9 +26,12 @@ static int cpu_debug_show(struct seq_file *m, void *p) seq_printf(m, "logical_die_id: %u\n", c->topo.logical_die_id); seq_printf(m, "llc_id: %u\n", c->topo.llc_id); seq_printf(m, "l2c_id: %u\n", c->topo.l2c_id); - seq_printf(m, "max_cores: %u\n", c->x86_max_cores); - seq_printf(m, "max_die_per_pkg: %u\n", __max_die_per_package); - seq_printf(m, "smp_num_siblings: %u\n", smp_num_siblings); + seq_printf(m, "amd_node_id: %u\n", c->topo.amd_node_id); + seq_printf(m, "amd_nodes_per_pkg: %u\n", topology_amd_nodes_per_pkg()); + seq_printf(m, "num_threads: %u\n", __num_threads_per_package); + seq_printf(m, "num_cores: %u\n", __num_cores_per_package); + seq_printf(m, "max_dies_per_pkg: %u\n", __max_dies_per_package); + seq_printf(m, "max_threads_per_core:%u\n", __max_threads_per_core); return 0; } @@ -42,12 +47,48 @@ static const struct file_operations dfs_cpu_ops = { .release = single_release, }; +static int dom_debug_show(struct seq_file *m, void *p) +{ + static const char *domain_names[TOPO_MAX_DOMAIN] = { + [TOPO_SMT_DOMAIN] = "Thread", + [TOPO_CORE_DOMAIN] = "Core", + [TOPO_MODULE_DOMAIN] = "Module", + [TOPO_TILE_DOMAIN] = "Tile", + [TOPO_DIE_DOMAIN] = "Die", + [TOPO_DIEGRP_DOMAIN] = "DieGrp", + [TOPO_PKG_DOMAIN] = "Package", + }; + unsigned int dom, nthreads = 1; + + for (dom = 0; dom < TOPO_MAX_DOMAIN; dom++) { + nthreads *= x86_topo_system.dom_size[dom]; + seq_printf(m, "domain: %-10s shift: %u dom_size: %5u max_threads: %5u\n", + domain_names[dom], x86_topo_system.dom_shifts[dom], + x86_topo_system.dom_size[dom], nthreads); + } + return 0; +} + +static int dom_debug_open(struct inode *inode, struct file *file) +{ + return single_open(file, dom_debug_show, inode->i_private); +} + +static const struct file_operations dfs_dom_ops = { + .open = dom_debug_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + static __init int cpu_init_debugfs(void) { struct dentry *dir, *base = debugfs_create_dir("topo", arch_debugfs_dir); unsigned long id; char name[24]; + debugfs_create_file("domains", 0444, base, NULL, &dfs_dom_ops); + dir = debugfs_create_dir("cpus", base); for_each_possible_cpu(id) { sprintf(name, "%lu", id); diff --git a/arch/x86/kernel/cpu/hygon.c b/arch/x86/kernel/cpu/hygon.c index f0cd95502faa..c5191b06f9f2 100644 --- a/arch/x86/kernel/cpu/hygon.c +++ b/arch/x86/kernel/cpu/hygon.c @@ -18,14 +18,6 @@ #include "cpu.h" -#define APICID_SOCKET_ID_BIT 6 - -/* - * nodes_per_socket: Stores the number of nodes per socket. - * Refer to CPUID Fn8000_001E_ECX Node Identifiers[10:8] - */ -static u32 nodes_per_socket = 1; - #ifdef CONFIG_NUMA /* * To workaround broken NUMA config. Read the comment in @@ -49,80 +41,6 @@ static int nearby_node(int apicid) } #endif -static void hygon_get_topology_early(struct cpuinfo_x86 *c) -{ - if (cpu_has(c, X86_FEATURE_TOPOEXT)) - smp_num_siblings = ((cpuid_ebx(0x8000001e) >> 8) & 0xff) + 1; -} - -/* - * Fixup core topology information for - * (1) Hygon multi-node processors - * Assumption: Number of cores in each internal node is the same. - * (2) Hygon processors supporting compute units - */ -static void hygon_get_topology(struct cpuinfo_x86 *c) -{ - /* get information required for multi-node processors */ - if (boot_cpu_has(X86_FEATURE_TOPOEXT)) { - int err; - u32 eax, ebx, ecx, edx; - - cpuid(0x8000001e, &eax, &ebx, &ecx, &edx); - - c->topo.die_id = ecx & 0xff; - - c->topo.core_id = ebx & 0xff; - - if (smp_num_siblings > 1) - c->x86_max_cores /= smp_num_siblings; - - /* - * In case leaf B is available, use it to derive - * topology information. - */ - err = detect_extended_topology(c); - if (!err) - c->x86_coreid_bits = get_count_order(c->x86_max_cores); - - /* - * Socket ID is ApicId[6] for the processors with model <= 0x3 - * when running on host. - */ - if (!boot_cpu_has(X86_FEATURE_HYPERVISOR) && c->x86_model <= 0x3) - c->topo.pkg_id = c->topo.apicid >> APICID_SOCKET_ID_BIT; - - cacheinfo_hygon_init_llc_id(c); - } else if (cpu_has(c, X86_FEATURE_NODEID_MSR)) { - u64 value; - - rdmsrl(MSR_FAM10H_NODE_ID, value); - c->topo.die_id = value & 7; - c->topo.llc_id = c->topo.die_id; - } else - return; - - if (nodes_per_socket > 1) - set_cpu_cap(c, X86_FEATURE_AMD_DCM); -} - -/* - * On Hygon setup the lower bits of the APIC id distinguish the cores. - * Assumes number of cores is a power of two. - */ -static void hygon_detect_cmp(struct cpuinfo_x86 *c) -{ - unsigned int bits; - - bits = c->x86_coreid_bits; - /* Low order bits define the core id (index of core in socket) */ - c->topo.core_id = c->topo.initial_apicid & ((1 << bits)-1); - /* Convert the initial APIC ID into the socket ID */ - c->topo.pkg_id = c->topo.initial_apicid >> bits; - /* Use package ID also for last level cache */ - c->topo.llc_id = c->topo.die_id = c->topo.pkg_id; -} - static void srat_detect_node(struct cpuinfo_x86 *c) { #ifdef CONFIG_NUMA @@ -173,32 +91,6 @@ static void srat_detect_node(struct cpuinfo_x86 *c) #endif } -static void early_init_hygon_mc(struct cpuinfo_x86 *c) -{ -#ifdef CONFIG_SMP - unsigned int bits, ecx; - - /* Multi core CPU? */ - if (c->extended_cpuid_level < 0x80000008) - return; - - ecx = cpuid_ecx(0x80000008); - - c->x86_max_cores = (ecx & 0xff) + 1; - - /* CPU telling us the core id bits shift? */ - bits = (ecx >> 12) & 0xF; - - /* Otherwise recompute */ - if (bits == 0) { - while ((1 << bits) < c->x86_max_cores) - bits++; - } - - c->x86_coreid_bits = bits; -#endif -} - static void bsp_init_hygon(struct cpuinfo_x86 *c) { if (cpu_has(c, X86_FEATURE_CONSTANT_TSC)) { @@ -212,18 +104,6 @@ static void bsp_init_hygon(struct cpuinfo_x86 *c) if (cpu_has(c, X86_FEATURE_MWAITX)) use_mwaitx_delay(); - if (boot_cpu_has(X86_FEATURE_TOPOEXT)) { - u32 ecx; - - ecx = cpuid_ecx(0x8000001e); - __max_die_per_package = nodes_per_socket = ((ecx >> 8) & 7) + 1; - } else if (boot_cpu_has(X86_FEATURE_NODEID_MSR)) { - u64 value; - - rdmsrl(MSR_FAM10H_NODE_ID, value); - __max_die_per_package = nodes_per_socket = ((value >> 3) & 7) + 1; - } - if (!boot_cpu_has(X86_FEATURE_AMD_SSBD) && !boot_cpu_has(X86_FEATURE_VIRT_SSBD)) { /* @@ -242,8 +122,6 @@ static void early_init_hygon(struct cpuinfo_x86 *c) { u32 dummy; - early_init_hygon_mc(c); - set_cpu_cap(c, X86_FEATURE_K8); rdmsr_safe(MSR_AMD64_PATCH_LEVEL, &c->microcode, &dummy); @@ -284,8 +162,6 @@ static void early_init_hygon(struct cpuinfo_x86 *c) * we can set it unconditionally. */ set_cpu_cap(c, X86_FEATURE_VMMCALL); - - hygon_get_topology_early(c); } static void init_hygon(struct cpuinfo_x86 *c) @@ -302,9 +178,6 @@ static void init_hygon(struct cpuinfo_x86 *c) set_cpu_cap(c, X86_FEATURE_REP_GOOD); - /* get apicid instead of initial apic id from cpuid */ - c->topo.apicid = read_apic_id(); - /* * XXX someone from Hygon needs to confirm this DTRT * @@ -316,8 +189,6 @@ static void init_hygon(struct cpuinfo_x86 *c) cpu_detect_cache_sizes(c); - hygon_detect_cmp(c); - hygon_get_topology(c); srat_detect_node(c); init_hygon_cacheinfo(c); diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c index a927a8fc9624..be30d7fa2e66 100644 --- a/arch/x86/kernel/cpu/intel.c +++ b/arch/x86/kernel/cpu/intel.c @@ -184,6 +184,90 @@ static bool bad_spectre_microcode(struct cpuinfo_x86 *c) return false; } +#define MSR_IA32_TME_ACTIVATE 0x982 + +/* Helpers to access TME_ACTIVATE MSR */ +#define TME_ACTIVATE_LOCKED(x) (x & 0x1) +#define TME_ACTIVATE_ENABLED(x) (x & 0x2) + +#define TME_ACTIVATE_POLICY(x) ((x >> 4) & 0xf) /* Bits 7:4 */ +#define TME_ACTIVATE_POLICY_AES_XTS_128 0 + +#define TME_ACTIVATE_KEYID_BITS(x) ((x >> 32) & 0xf) /* Bits 35:32 */ + +#define TME_ACTIVATE_CRYPTO_ALGS(x) ((x >> 48) & 0xffff) /* Bits 63:48 */ +#define TME_ACTIVATE_CRYPTO_AES_XTS_128 1 + +/* Values for mktme_status (SW only construct) */ +#define MKTME_ENABLED 0 +#define MKTME_DISABLED 1 +#define MKTME_UNINITIALIZED 2 +static int mktme_status = MKTME_UNINITIALIZED; + +static void detect_tme_early(struct cpuinfo_x86 *c) +{ + u64 tme_activate, tme_policy, tme_crypto_algs; + int keyid_bits = 0, nr_keyids = 0; + static u64 tme_activate_cpu0 = 0; + + rdmsrl(MSR_IA32_TME_ACTIVATE, tme_activate); + + if (mktme_status != MKTME_UNINITIALIZED) { + if (tme_activate != tme_activate_cpu0) { + /* Broken BIOS? */ + pr_err_once("x86/tme: configuration is inconsistent between CPUs\n"); + pr_err_once("x86/tme: MKTME is not usable\n"); + mktme_status = MKTME_DISABLED; + + /* Proceed. We may need to exclude bits from x86_phys_bits. */ + } + } else { + tme_activate_cpu0 = tme_activate; + } + + if (!TME_ACTIVATE_LOCKED(tme_activate) || !TME_ACTIVATE_ENABLED(tme_activate)) { + pr_info_once("x86/tme: not enabled by BIOS\n"); + mktme_status = MKTME_DISABLED; + return; + } + + if (mktme_status != MKTME_UNINITIALIZED) + goto detect_keyid_bits; + + pr_info("x86/tme: enabled by BIOS\n"); + + tme_policy = TME_ACTIVATE_POLICY(tme_activate); + if (tme_policy != TME_ACTIVATE_POLICY_AES_XTS_128) + pr_warn("x86/tme: Unknown policy is active: %#llx\n", tme_policy); + + tme_crypto_algs = TME_ACTIVATE_CRYPTO_ALGS(tme_activate); + if (!(tme_crypto_algs & TME_ACTIVATE_CRYPTO_AES_XTS_128)) { + pr_err("x86/mktme: No known encryption algorithm is supported: %#llx\n", + tme_crypto_algs); + mktme_status = MKTME_DISABLED; + } +detect_keyid_bits: + keyid_bits = TME_ACTIVATE_KEYID_BITS(tme_activate); + nr_keyids = (1UL << keyid_bits) - 1; + if (nr_keyids) { + pr_info_once("x86/mktme: enabled by BIOS\n"); + pr_info_once("x86/mktme: %d KeyIDs available\n", nr_keyids); + } else { + pr_info_once("x86/mktme: disabled by BIOS\n"); + } + + if (mktme_status == MKTME_UNINITIALIZED) { + /* MKTME is usable */ + mktme_status = MKTME_ENABLED; + } + + /* + * KeyID bits effectively lower the number of physical address + * bits. Update cpuinfo_x86::x86_phys_bits accordingly. + */ + c->x86_phys_bits -= keyid_bits; +} + static void early_init_intel(struct cpuinfo_x86 *c) { u64 misc_enable; @@ -317,11 +401,11 @@ static void early_init_intel(struct cpuinfo_x86 *c) check_memory_type_self_snoop_errata(c); /* - * Get the number of SMT siblings early from the extended topology - * leaf, if available. Otherwise try the legacy SMT detection. + * Adjust the number of physical bits early because it affects the + * valid bits of the MTRR mask registers. */ - if (detect_extended_topology_early(c) < 0) - detect_ht_early(c); + if (cpu_has(c, X86_FEATURE_TME)) + detect_tme_early(c); } static void bsp_init_intel(struct cpuinfo_x86 *c) @@ -482,90 +566,6 @@ static void srat_detect_node(struct cpuinfo_x86 *c) #endif } -#define MSR_IA32_TME_ACTIVATE 0x982 - -/* Helpers to access TME_ACTIVATE MSR */ -#define TME_ACTIVATE_LOCKED(x) (x & 0x1) -#define TME_ACTIVATE_ENABLED(x) (x & 0x2) - -#define TME_ACTIVATE_POLICY(x) ((x >> 4) & 0xf) /* Bits 7:4 */ -#define TME_ACTIVATE_POLICY_AES_XTS_128 0 - -#define TME_ACTIVATE_KEYID_BITS(x) ((x >> 32) & 0xf) /* Bits 35:32 */ - -#define TME_ACTIVATE_CRYPTO_ALGS(x) ((x >> 48) & 0xffff) /* Bits 63:48 */ -#define TME_ACTIVATE_CRYPTO_AES_XTS_128 1 - -/* Values for mktme_status (SW only construct) */ -#define MKTME_ENABLED 0 -#define MKTME_DISABLED 1 -#define MKTME_UNINITIALIZED 2 -static int mktme_status = MKTME_UNINITIALIZED; - -static void detect_tme(struct cpuinfo_x86 *c) -{ - u64 tme_activate, tme_policy, tme_crypto_algs; - int keyid_bits = 0, nr_keyids = 0; - static u64 tme_activate_cpu0 = 0; - - rdmsrl(MSR_IA32_TME_ACTIVATE, tme_activate); - - if (mktme_status != MKTME_UNINITIALIZED) { - if (tme_activate != tme_activate_cpu0) { - /* Broken BIOS? */ - pr_err_once("x86/tme: configuration is inconsistent between CPUs\n"); - pr_err_once("x86/tme: MKTME is not usable\n"); - mktme_status = MKTME_DISABLED; - - /* Proceed. We may need to exclude bits from x86_phys_bits. */ - } - } else { - tme_activate_cpu0 = tme_activate; - } - - if (!TME_ACTIVATE_LOCKED(tme_activate) || !TME_ACTIVATE_ENABLED(tme_activate)) { - pr_info_once("x86/tme: not enabled by BIOS\n"); - mktme_status = MKTME_DISABLED; - return; - } - - if (mktme_status != MKTME_UNINITIALIZED) - goto detect_keyid_bits; - - pr_info("x86/tme: enabled by BIOS\n"); - - tme_policy = TME_ACTIVATE_POLICY(tme_activate); - if (tme_policy != TME_ACTIVATE_POLICY_AES_XTS_128) - pr_warn("x86/tme: Unknown policy is active: %#llx\n", tme_policy); - - tme_crypto_algs = TME_ACTIVATE_CRYPTO_ALGS(tme_activate); - if (!(tme_crypto_algs & TME_ACTIVATE_CRYPTO_AES_XTS_128)) { - pr_err("x86/mktme: No known encryption algorithm is supported: %#llx\n", - tme_crypto_algs); - mktme_status = MKTME_DISABLED; - } -detect_keyid_bits: - keyid_bits = TME_ACTIVATE_KEYID_BITS(tme_activate); - nr_keyids = (1UL << keyid_bits) - 1; - if (nr_keyids) { - pr_info_once("x86/mktme: enabled by BIOS\n"); - pr_info_once("x86/mktme: %d KeyIDs available\n", nr_keyids); - } else { - pr_info_once("x86/mktme: disabled by BIOS\n"); - } - - if (mktme_status == MKTME_UNINITIALIZED) { - /* MKTME is usable */ - mktme_status = MKTME_ENABLED; - } - - /* - * KeyID bits effectively lower the number of physical address - * bits. Update cpuinfo_x86::x86_phys_bits accordingly. - */ - c->x86_phys_bits -= keyid_bits; -} - static void init_cpuid_fault(struct cpuinfo_x86 *c) { u64 msr; @@ -603,24 +603,6 @@ static void init_intel(struct cpuinfo_x86 *c) intel_workarounds(c); - /* - * Detect the extended topology information if available. This - * will reinitialise the initial_apicid which will be used - * in init_intel_cacheinfo() - */ - detect_extended_topology(c); - - if (!cpu_has(c, X86_FEATURE_XTOPOLOGY)) { - /* - * let's use the legacy cpuid vector 0x1 and 0x4 for topology - * detection. - */ - detect_num_cpu_cores(c); -#ifdef CONFIG_X86_32 - detect_ht(c); -#endif - } - init_intel_cacheinfo(c); if (c->cpuid_level > 9) { @@ -702,9 +684,6 @@ static void init_intel(struct cpuinfo_x86 *c) init_ia32_feat_ctl(c); - if (cpu_has(c, X86_FEATURE_TME)) - detect_tme(c); - init_intel_misc_features(c); split_lock_init(); diff --git a/arch/x86/kernel/cpu/intel_pconfig.c b/arch/x86/kernel/cpu/intel_pconfig.c index 0771a905b286..5be2b1790282 100644 --- a/arch/x86/kernel/cpu/intel_pconfig.c +++ b/arch/x86/kernel/cpu/intel_pconfig.c @@ -7,6 +7,8 @@ * Author: * Kirill A. Shutemov <kirill.shutemov@linux.intel.com> */ +#include <linux/bug.h> +#include <linux/limits.h> #include <asm/cpufeature.h> #include <asm/intel_pconfig.h> diff --git a/arch/x86/kernel/cpu/mce/amd.c b/arch/x86/kernel/cpu/mce/amd.c index 2b46eb0fdf3a..9a0133ef7e20 100644 --- a/arch/x86/kernel/cpu/mce/amd.c +++ b/arch/x86/kernel/cpu/mce/amd.c @@ -1231,7 +1231,7 @@ static int threshold_create_bank(struct threshold_bank **bp, unsigned int cpu, return -ENODEV; if (is_shared_bank(bank)) { - nb = node_to_amd_nb(topology_die_id(cpu)); + nb = node_to_amd_nb(topology_amd_node_id(cpu)); /* threshold descriptor already initialized on this node? */ if (nb && nb->bank4) { @@ -1335,7 +1335,7 @@ static void threshold_remove_bank(struct threshold_bank *bank) * The last CPU on this node using the shared bank is going * away, remove that bank now. */ - nb = node_to_amd_nb(topology_die_id(smp_processor_id())); + nb = node_to_amd_nb(topology_amd_node_id(smp_processor_id())); nb->bank4 = NULL; } diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c index bc39252bc54f..b5cc557cfc37 100644 --- a/arch/x86/kernel/cpu/mce/core.c +++ b/arch/x86/kernel/cpu/mce/core.c @@ -46,6 +46,7 @@ #include <linux/hardirq.h> #include <linux/kexec.h> +#include <asm/fred.h> #include <asm/intel-family.h> #include <asm/processor.h> #include <asm/traps.h> @@ -2166,6 +2167,31 @@ DEFINE_IDTENTRY_MCE_USER(exc_machine_check) exc_machine_check_user(regs); local_db_restore(dr7); } + +#ifdef CONFIG_X86_FRED +/* + * When occurred on different ring level, i.e., from user or kernel + * context, #MCE needs to be handled on different stack: User #MCE + * on current task stack, while kernel #MCE on a dedicated stack. + * + * This is exactly how FRED event delivery invokes an exception + * handler: ring 3 event on level 0 stack, i.e., current task stack; + * ring 0 event on the #MCE dedicated stack specified in the + * IA32_FRED_STKLVLS MSR. So unlike IDT, the FRED machine check entry + * stub doesn't do stack switch. + */ +DEFINE_FREDENTRY_MCE(exc_machine_check) +{ + unsigned long dr7; + + dr7 = local_db_save(); + if (user_mode(regs)) + exc_machine_check_user(regs); + else + exc_machine_check_kernel(regs); + local_db_restore(dr7); +} +#endif #else /* 32bit unified entry point */ DEFINE_IDTENTRY_RAW(exc_machine_check) @@ -2431,7 +2457,7 @@ static void mce_enable_ce(void *all) __mcheck_cpu_init_timer(); } -static struct bus_type mce_subsys = { +static const struct bus_type mce_subsys = { .name = "machinecheck", .dev_name = "machinecheck", }; diff --git a/arch/x86/kernel/cpu/mce/inject.c b/arch/x86/kernel/cpu/mce/inject.c index 72f0695c3dc1..94953d749475 100644 --- a/arch/x86/kernel/cpu/mce/inject.c +++ b/arch/x86/kernel/cpu/mce/inject.c @@ -430,11 +430,9 @@ static void trigger_thr_int(void *info) static u32 get_nbc_for_node(int node_id) { - struct cpuinfo_x86 *c = &boot_cpu_data; u32 cores_per_node; - cores_per_node = (c->x86_max_cores * smp_num_siblings) / amd_get_nodes_per_socket(); - + cores_per_node = topology_num_threads_per_package() / topology_amd_nodes_per_pkg(); return cores_per_node * node_id; } @@ -543,8 +541,8 @@ static void do_inject(void) if (boot_cpu_has(X86_FEATURE_AMD_DCM) && b == 4 && boot_cpu_data.x86 < 0x17) { - toggle_nb_mca_mst_cpu(topology_die_id(cpu)); - cpu = get_nbc_for_node(topology_die_id(cpu)); + toggle_nb_mca_mst_cpu(topology_amd_node_id(cpu)); + cpu = get_nbc_for_node(topology_amd_node_id(cpu)); } cpus_read_lock(); diff --git a/arch/x86/kernel/cpu/microcode/intel.c b/arch/x86/kernel/cpu/microcode/intel.c index 857e608af641..5f0414452b67 100644 --- a/arch/x86/kernel/cpu/microcode/intel.c +++ b/arch/x86/kernel/cpu/microcode/intel.c @@ -641,7 +641,7 @@ static __init void calc_llc_size_per_core(struct cpuinfo_x86 *c) { u64 llc_size = c->x86_cache_size * 1024ULL; - do_div(llc_size, c->x86_max_cores); + do_div(llc_size, topology_num_cores_per_package()); llc_size_per_core = (unsigned int)llc_size; } diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c index 01fa06dd06b6..45e0e70e238c 100644 --- a/arch/x86/kernel/cpu/mshyperv.c +++ b/arch/x86/kernel/cpu/mshyperv.c @@ -539,19 +539,18 @@ static void __init ms_hyperv_init_platform(void) */ x86_platform.apic_post_init = hyperv_init; hyperv_setup_mmu_ops(); - /* Setup the IDT for hypervisor callback */ - alloc_intr_gate(HYPERVISOR_CALLBACK_VECTOR, asm_sysvec_hyperv_callback); - /* Setup the IDT for reenlightenment notifications */ + /* Install system interrupt handler for hypervisor callback */ + sysvec_install(HYPERVISOR_CALLBACK_VECTOR, sysvec_hyperv_callback); + + /* Install system interrupt handler for reenlightenment notifications */ if (ms_hyperv.features & HV_ACCESS_REENLIGHTENMENT) { - alloc_intr_gate(HYPERV_REENLIGHTENMENT_VECTOR, - asm_sysvec_hyperv_reenlightenment); + sysvec_install(HYPERV_REENLIGHTENMENT_VECTOR, sysvec_hyperv_reenlightenment); } - /* Setup the IDT for stimer0 */ + /* Install system interrupt handler for stimer0 */ if (ms_hyperv.misc_features & HV_STIMER_DIRECT_MODE_AVAILABLE) { - alloc_intr_gate(HYPERV_STIMER0_VECTOR, - asm_sysvec_hyperv_stimer0); + sysvec_install(HYPERV_STIMER0_VECTOR, sysvec_hyperv_stimer0); } # ifdef CONFIG_SMP diff --git a/arch/x86/kernel/cpu/mtrr/generic.c b/arch/x86/kernel/cpu/mtrr/generic.c index d3524778a545..422a4ddc2ab7 100644 --- a/arch/x86/kernel/cpu/mtrr/generic.c +++ b/arch/x86/kernel/cpu/mtrr/generic.c @@ -108,6 +108,9 @@ static inline void k8_check_syscfg_dram_mod_en(void) (boot_cpu_data.x86 >= 0x0f))) return; + if (cpu_feature_enabled(X86_FEATURE_SEV_SNP)) + return; + rdmsr(MSR_AMD64_SYSCFG, lo, hi); if (lo & K8_MTRRFIXRANGE_DRAM_MODIFY) { pr_err(FW_WARN "MTRR: CPU %u: SYSCFG[MtrrFixDramModEn]" diff --git a/arch/x86/kernel/cpu/rdrand.c b/arch/x86/kernel/cpu/rdrand.c index 26a427fa84ea..eeac00d20926 100644 --- a/arch/x86/kernel/cpu/rdrand.c +++ b/arch/x86/kernel/cpu/rdrand.c @@ -6,6 +6,7 @@ * Authors: Fenghua Yu <fenghua.yu@intel.com>, * H. Peter Anvin <hpa@linux.intel.com> */ +#include <linux/printk.h> #include <asm/processor.h> #include <asm/archrandom.h> diff --git a/arch/x86/kernel/cpu/resctrl/core.c b/arch/x86/kernel/cpu/resctrl/core.c index 19e0681f0435..83e40341583e 100644 --- a/arch/x86/kernel/cpu/resctrl/core.c +++ b/arch/x86/kernel/cpu/resctrl/core.c @@ -16,6 +16,7 @@ #define pr_fmt(fmt) "resctrl: " fmt +#include <linux/cpu.h> #include <linux/slab.h> #include <linux/err.h> #include <linux/cacheinfo.h> @@ -25,8 +26,15 @@ #include <asm/resctrl.h> #include "internal.h" -/* Mutex to protect rdtgroup access. */ -DEFINE_MUTEX(rdtgroup_mutex); +/* + * rdt_domain structures are kfree()d when their last CPU goes offline, + * and allocated when the first CPU in a new domain comes online. + * The rdt_resource's domain list is updated when this happens. Readers of + * the domain list must either take cpus_read_lock(), or rely on an RCU + * read-side critical section, to avoid observing concurrent modification. + * All writers take this mutex: + */ +static DEFINE_MUTEX(domain_list_lock); /* * The cached resctrl_pqr_state is strictly per CPU and can never be @@ -136,15 +144,15 @@ static inline void cache_alloc_hsw_probe(void) { struct rdt_hw_resource *hw_res = &rdt_resources_all[RDT_RESOURCE_L3]; struct rdt_resource *r = &hw_res->r_resctrl; - u32 l, h, max_cbm = BIT_MASK(20) - 1; + u64 max_cbm = BIT_ULL_MASK(20) - 1, l3_cbm_0; - if (wrmsr_safe(MSR_IA32_L3_CBM_BASE, max_cbm, 0)) + if (wrmsrl_safe(MSR_IA32_L3_CBM_BASE, max_cbm)) return; - rdmsr(MSR_IA32_L3_CBM_BASE, l, h); + rdmsrl(MSR_IA32_L3_CBM_BASE, l3_cbm_0); /* If all the bits were set in MSR, return success */ - if (l != max_cbm) + if (l3_cbm_0 != max_cbm) return; hw_res->num_closid = 4; @@ -231,9 +239,7 @@ static bool __get_mem_config_intel(struct rdt_resource *r) static bool __rdt_get_mem_config_amd(struct rdt_resource *r) { struct rdt_hw_resource *hw_res = resctrl_to_arch_res(r); - union cpuid_0x10_3_eax eax; - union cpuid_0x10_x_edx edx; - u32 ebx, ecx, subleaf; + u32 eax, ebx, ecx, edx, subleaf; /* * Query CPUID_Fn80000020_EDX_x01 for MBA and @@ -241,9 +247,9 @@ static bool __rdt_get_mem_config_amd(struct rdt_resource *r) */ subleaf = (r->rid == RDT_RESOURCE_SMBA) ? 2 : 1; - cpuid_count(0x80000020, subleaf, &eax.full, &ebx, &ecx, &edx.full); - hw_res->num_closid = edx.split.cos_max + 1; - r->default_ctrl = MAX_MBA_BW_AMD; + cpuid_count(0x80000020, subleaf, &eax, &ebx, &ecx, &edx); + hw_res->num_closid = edx + 1; + r->default_ctrl = 1 << eax; /* AMD does not use delay */ r->membw.delay_linear = false; @@ -512,6 +518,8 @@ static void domain_add_cpu(int cpu, struct rdt_resource *r) struct rdt_domain *d; int err; + lockdep_assert_held(&domain_list_lock); + d = rdt_find_domain(r, id, &add_pos); if (IS_ERR(d)) { pr_warn("Couldn't find cache id for CPU %d\n", cpu); @@ -545,11 +553,12 @@ static void domain_add_cpu(int cpu, struct rdt_resource *r) return; } - list_add_tail(&d->list, add_pos); + list_add_tail_rcu(&d->list, add_pos); err = resctrl_online_domain(r, d); if (err) { - list_del(&d->list); + list_del_rcu(&d->list); + synchronize_rcu(); domain_free(hw_dom); } } @@ -560,6 +569,8 @@ static void domain_remove_cpu(int cpu, struct rdt_resource *r) struct rdt_hw_domain *hw_dom; struct rdt_domain *d; + lockdep_assert_held(&domain_list_lock); + d = rdt_find_domain(r, id, NULL); if (IS_ERR_OR_NULL(d)) { pr_warn("Couldn't find cache id for CPU %d\n", cpu); @@ -570,7 +581,8 @@ static void domain_remove_cpu(int cpu, struct rdt_resource *r) cpumask_clear_cpu(cpu, &d->cpu_mask); if (cpumask_empty(&d->cpu_mask)) { resctrl_offline_domain(r, d); - list_del(&d->list); + list_del_rcu(&d->list); + synchronize_rcu(); /* * rdt_domain "d" is going to be freed below, so clear @@ -582,73 +594,47 @@ static void domain_remove_cpu(int cpu, struct rdt_resource *r) return; } - - if (r == &rdt_resources_all[RDT_RESOURCE_L3].r_resctrl) { - if (is_mbm_enabled() && cpu == d->mbm_work_cpu) { - cancel_delayed_work(&d->mbm_over); - mbm_setup_overflow_handler(d, 0); - } - if (is_llc_occupancy_enabled() && cpu == d->cqm_work_cpu && - has_busy_rmid(r, d)) { - cancel_delayed_work(&d->cqm_limbo); - cqm_setup_limbo_handler(d, 0); - } - } } static void clear_closid_rmid(int cpu) { struct resctrl_pqr_state *state = this_cpu_ptr(&pqr_state); - state->default_closid = 0; - state->default_rmid = 0; - state->cur_closid = 0; - state->cur_rmid = 0; - wrmsr(MSR_IA32_PQR_ASSOC, 0, 0); + state->default_closid = RESCTRL_RESERVED_CLOSID; + state->default_rmid = RESCTRL_RESERVED_RMID; + state->cur_closid = RESCTRL_RESERVED_CLOSID; + state->cur_rmid = RESCTRL_RESERVED_RMID; + wrmsr(MSR_IA32_PQR_ASSOC, RESCTRL_RESERVED_RMID, + RESCTRL_RESERVED_CLOSID); } -static int resctrl_online_cpu(unsigned int cpu) +static int resctrl_arch_online_cpu(unsigned int cpu) { struct rdt_resource *r; - mutex_lock(&rdtgroup_mutex); + mutex_lock(&domain_list_lock); for_each_capable_rdt_resource(r) domain_add_cpu(cpu, r); - /* The cpu is set in default rdtgroup after online. */ - cpumask_set_cpu(cpu, &rdtgroup_default.cpu_mask); + mutex_unlock(&domain_list_lock); + clear_closid_rmid(cpu); - mutex_unlock(&rdtgroup_mutex); + resctrl_online_cpu(cpu); return 0; } -static void clear_childcpus(struct rdtgroup *r, unsigned int cpu) -{ - struct rdtgroup *cr; - - list_for_each_entry(cr, &r->mon.crdtgrp_list, mon.crdtgrp_list) { - if (cpumask_test_and_clear_cpu(cpu, &cr->cpu_mask)) { - break; - } - } -} - -static int resctrl_offline_cpu(unsigned int cpu) +static int resctrl_arch_offline_cpu(unsigned int cpu) { - struct rdtgroup *rdtgrp; struct rdt_resource *r; - mutex_lock(&rdtgroup_mutex); + resctrl_offline_cpu(cpu); + + mutex_lock(&domain_list_lock); for_each_capable_rdt_resource(r) domain_remove_cpu(cpu, r); - list_for_each_entry(rdtgrp, &rdt_all_groups, rdtgroup_list) { - if (cpumask_test_and_clear_cpu(cpu, &rdtgrp->cpu_mask)) { - clear_childcpus(rdtgrp, cpu); - break; - } - } + mutex_unlock(&domain_list_lock); + clear_closid_rmid(cpu); - mutex_unlock(&rdtgroup_mutex); return 0; } @@ -968,7 +954,8 @@ static int __init resctrl_late_init(void) state = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "x86/resctrl/cat:online:", - resctrl_online_cpu, resctrl_offline_cpu); + resctrl_arch_online_cpu, + resctrl_arch_offline_cpu); if (state < 0) return state; @@ -992,8 +979,14 @@ late_initcall(resctrl_late_init); static void __exit resctrl_exit(void) { + struct rdt_resource *r = &rdt_resources_all[RDT_RESOURCE_L3].r_resctrl; + cpuhp_remove_state(rdt_online); + rdtgroup_exit(); + + if (r->mon_capable) + rdt_put_mon_l3_config(); } __exitcall(resctrl_exit); diff --git a/arch/x86/kernel/cpu/resctrl/ctrlmondata.c b/arch/x86/kernel/cpu/resctrl/ctrlmondata.c index beccb0e87ba7..7997b47743a2 100644 --- a/arch/x86/kernel/cpu/resctrl/ctrlmondata.c +++ b/arch/x86/kernel/cpu/resctrl/ctrlmondata.c @@ -19,6 +19,8 @@ #include <linux/kernfs.h> #include <linux/seq_file.h> #include <linux/slab.h> +#include <linux/tick.h> + #include "internal.h" /* @@ -210,6 +212,9 @@ static int parse_line(char *line, struct resctrl_schema *s, struct rdt_domain *d; unsigned long dom_id; + /* Walking r->domains, ensure it can't race with cpuhp */ + lockdep_assert_cpus_held(); + if (rdtgrp->mode == RDT_MODE_PSEUDO_LOCKSETUP && (r->rid == RDT_RESOURCE_MBA || r->rid == RDT_RESOURCE_SMBA)) { rdt_last_cmd_puts("Cannot pseudo-lock MBA resource\n"); @@ -314,6 +319,9 @@ int resctrl_arch_update_domains(struct rdt_resource *r, u32 closid) struct rdt_domain *d; u32 idx; + /* Walking r->domains, ensure it can't race with cpuhp */ + lockdep_assert_cpus_held(); + if (!zalloc_cpumask_var(&cpu_mask, GFP_KERNEL)) return -ENOMEM; @@ -379,11 +387,9 @@ ssize_t rdtgroup_schemata_write(struct kernfs_open_file *of, return -EINVAL; buf[nbytes - 1] = '\0'; - cpus_read_lock(); rdtgrp = rdtgroup_kn_lock_live(of->kn); if (!rdtgrp) { rdtgroup_kn_unlock(of->kn); - cpus_read_unlock(); return -ENOENT; } rdt_last_cmd_clear(); @@ -445,7 +451,6 @@ ssize_t rdtgroup_schemata_write(struct kernfs_open_file *of, out: rdt_staged_configs_clear(); rdtgroup_kn_unlock(of->kn); - cpus_read_unlock(); return ret ?: nbytes; } @@ -465,6 +470,9 @@ static void show_doms(struct seq_file *s, struct resctrl_schema *schema, int clo bool sep = false; u32 ctrl_val; + /* Walking r->domains, ensure it can't race with cpuhp */ + lockdep_assert_cpus_held(); + seq_printf(s, "%*s:", max_name_width, schema->name); list_for_each_entry(dom, &r->domains, list) { if (sep) @@ -522,12 +530,24 @@ int rdtgroup_schemata_show(struct kernfs_open_file *of, return ret; } +static int smp_mon_event_count(void *arg) +{ + mon_event_count(arg); + + return 0; +} + void mon_event_read(struct rmid_read *rr, struct rdt_resource *r, struct rdt_domain *d, struct rdtgroup *rdtgrp, int evtid, int first) { + int cpu; + + /* When picking a CPU from cpu_mask, ensure it can't race with cpuhp */ + lockdep_assert_cpus_held(); + /* - * setup the parameters to send to the IPI to read the data. + * Setup the parameters to pass to mon_event_count() to read the data. */ rr->rgrp = rdtgrp; rr->evtid = evtid; @@ -535,8 +555,26 @@ void mon_event_read(struct rmid_read *rr, struct rdt_resource *r, rr->d = d; rr->val = 0; rr->first = first; + rr->arch_mon_ctx = resctrl_arch_mon_ctx_alloc(r, evtid); + if (IS_ERR(rr->arch_mon_ctx)) { + rr->err = -EINVAL; + return; + } + + cpu = cpumask_any_housekeeping(&d->cpu_mask, RESCTRL_PICK_ANY_CPU); + + /* + * cpumask_any_housekeeping() prefers housekeeping CPUs, but + * are all the CPUs nohz_full? If yes, pick a CPU to IPI. + * MPAM's resctrl_arch_rmid_read() is unable to read the + * counters on some platforms if its called in IRQ context. + */ + if (tick_nohz_full_cpu(cpu)) + smp_call_function_any(&d->cpu_mask, mon_event_count, rr, 1); + else + smp_call_on_cpu(cpu, smp_mon_event_count, rr, false); - smp_call_function_any(&d->cpu_mask, mon_event_count, rr, 1); + resctrl_arch_mon_ctx_free(r, evtid, rr->arch_mon_ctx); } int rdtgroup_mondata_show(struct seq_file *m, void *arg) diff --git a/arch/x86/kernel/cpu/resctrl/internal.h b/arch/x86/kernel/cpu/resctrl/internal.h index a4f1aa15f0a2..c99f26ebe7a6 100644 --- a/arch/x86/kernel/cpu/resctrl/internal.h +++ b/arch/x86/kernel/cpu/resctrl/internal.h @@ -7,6 +7,9 @@ #include <linux/kernfs.h> #include <linux/fs_context.h> #include <linux/jump_label.h> +#include <linux/tick.h> + +#include <asm/resctrl.h> #define L3_QOS_CDP_ENABLE 0x01ULL @@ -18,7 +21,6 @@ #define MBM_OVERFLOW_INTERVAL 1000 #define MAX_MBA_BW 100u #define MBA_IS_LINEAR 0x4 -#define MAX_MBA_BW_AMD 0x800 #define MBM_CNTR_WIDTH_OFFSET_AMD 20 #define RMID_VAL_ERROR BIT_ULL(63) @@ -54,6 +56,46 @@ /* Max event bits supported */ #define MAX_EVT_CONFIG_BITS GENMASK(6, 0) +/** + * cpumask_any_housekeeping() - Choose any CPU in @mask, preferring those that + * aren't marked nohz_full + * @mask: The mask to pick a CPU from. + * @exclude_cpu:The CPU to avoid picking. + * + * Returns a CPU from @mask, but not @exclude_cpu. If there are housekeeping + * CPUs that don't use nohz_full, these are preferred. Pass + * RESCTRL_PICK_ANY_CPU to avoid excluding any CPUs. + * + * When a CPU is excluded, returns >= nr_cpu_ids if no CPUs are available. + */ +static inline unsigned int +cpumask_any_housekeeping(const struct cpumask *mask, int exclude_cpu) +{ + unsigned int cpu, hk_cpu; + + if (exclude_cpu == RESCTRL_PICK_ANY_CPU) + cpu = cpumask_any(mask); + else + cpu = cpumask_any_but(mask, exclude_cpu); + + if (!IS_ENABLED(CONFIG_NO_HZ_FULL)) + return cpu; + + /* If the CPU picked isn't marked nohz_full nothing more needs doing. */ + if (cpu < nr_cpu_ids && !tick_nohz_full_cpu(cpu)) + return cpu; + + /* Try to find a CPU that isn't nohz_full to use in preference */ + hk_cpu = cpumask_nth_andnot(0, mask, tick_nohz_full_mask); + if (hk_cpu == exclude_cpu) + hk_cpu = cpumask_nth_andnot(1, mask, tick_nohz_full_mask); + + if (hk_cpu < nr_cpu_ids) + cpu = hk_cpu; + + return cpu; +} + struct rdt_fs_context { struct kernfs_fs_context kfc; bool enable_cdpl2; @@ -69,9 +111,6 @@ static inline struct rdt_fs_context *rdt_fc2context(struct fs_context *fc) return container_of(kfc, struct rdt_fs_context, kfc); } -DECLARE_STATIC_KEY_FALSE(rdt_enable_key); -DECLARE_STATIC_KEY_FALSE(rdt_mon_enable_key); - /** * struct mon_evt - Entry in the event list of a resource * @evtid: event id @@ -112,12 +151,12 @@ struct rmid_read { bool first; int err; u64 val; + void *arch_mon_ctx; }; -extern bool rdt_alloc_capable; -extern bool rdt_mon_capable; extern unsigned int rdt_mon_features; extern struct list_head resctrl_schema_all; +extern bool resctrl_mounted; enum rdt_group_type { RDTCTRL_GROUP = 0, @@ -296,14 +335,10 @@ struct rftype { * struct mbm_state - status for each MBM counter in each domain * @prev_bw_bytes: Previous bytes value read for bandwidth calculation * @prev_bw: The most recent bandwidth in MBps - * @delta_bw: Difference between the current and previous bandwidth - * @delta_comp: Indicates whether to compute the delta_bw */ struct mbm_state { u64 prev_bw_bytes; u32 prev_bw; - u32 delta_bw; - bool delta_comp; }; /** @@ -395,6 +430,8 @@ struct rdt_parse_data { * @msr_update: Function pointer to update QOS MSRs * @mon_scale: cqm counter * mon_scale = occupancy in bytes * @mbm_width: Monitor width, to detect and correct for overflow. + * @mbm_cfg_mask: Bandwidth sources that can be tracked when Bandwidth + * Monitoring Event Configuration (BMEC) is supported. * @cdp_enabled: CDP state of this resource * * Members of this structure are either private to the architecture @@ -409,6 +446,7 @@ struct rdt_hw_resource { struct rdt_resource *r); unsigned int mon_scale; unsigned int mbm_width; + unsigned int mbm_cfg_mask; bool cdp_enabled; }; @@ -426,8 +464,6 @@ extern struct mutex rdtgroup_mutex; extern struct rdt_hw_resource rdt_resources_all[]; extern struct rdtgroup rdtgroup_default; -DECLARE_STATIC_KEY_FALSE(rdt_alloc_enable_key); - extern struct dentry *debugfs_resctrl; enum resctrl_res_level { @@ -543,9 +579,10 @@ void rdtgroup_pseudo_lock_remove(struct rdtgroup *rdtgrp); struct rdt_domain *get_domain_from_cpu(int cpu, struct rdt_resource *r); int closids_supported(void); void closid_free(int closid); -int alloc_rmid(void); -void free_rmid(u32 rmid); +int alloc_rmid(u32 closid); +void free_rmid(u32 closid, u32 rmid); int rdt_get_mon_l3_config(struct rdt_resource *r); +void __exit rdt_put_mon_l3_config(void); bool __init rdt_cpu_has(int flag); void mon_event_count(void *info); int rdtgroup_mondata_show(struct seq_file *m, void *arg); @@ -553,17 +590,21 @@ void mon_event_read(struct rmid_read *rr, struct rdt_resource *r, struct rdt_domain *d, struct rdtgroup *rdtgrp, int evtid, int first); void mbm_setup_overflow_handler(struct rdt_domain *dom, - unsigned long delay_ms); + unsigned long delay_ms, + int exclude_cpu); void mbm_handle_overflow(struct work_struct *work); void __init intel_rdt_mbm_apply_quirk(void); bool is_mba_sc(struct rdt_resource *r); -void cqm_setup_limbo_handler(struct rdt_domain *dom, unsigned long delay_ms); +void cqm_setup_limbo_handler(struct rdt_domain *dom, unsigned long delay_ms, + int exclude_cpu); void cqm_handle_limbo(struct work_struct *work); -bool has_busy_rmid(struct rdt_resource *r, struct rdt_domain *d); +bool has_busy_rmid(struct rdt_domain *d); void __check_limbo(struct rdt_domain *d, bool force_free); void rdt_domain_reconfigure_cdp(struct rdt_resource *r); void __init thread_throttle_mode_init(void); void __init mbm_config_rftype_init(const char *config); void rdt_staged_configs_clear(void); +bool closid_allocated(unsigned int closid); +int resctrl_find_cleanest_closid(void); #endif /* _ASM_X86_RESCTRL_INTERNAL_H */ diff --git a/arch/x86/kernel/cpu/resctrl/monitor.c b/arch/x86/kernel/cpu/resctrl/monitor.c index f136ac046851..c34a35ec0f03 100644 --- a/arch/x86/kernel/cpu/resctrl/monitor.c +++ b/arch/x86/kernel/cpu/resctrl/monitor.c @@ -15,6 +15,7 @@ * Software Developer Manual June 2016, volume 3, section 17.17. */ +#include <linux/cpu.h> #include <linux/module.h> #include <linux/sizes.h> #include <linux/slab.h> @@ -24,7 +25,20 @@ #include "internal.h" +/** + * struct rmid_entry - dirty tracking for all RMID. + * @closid: The CLOSID for this entry. + * @rmid: The RMID for this entry. + * @busy: The number of domains with cached data using this RMID. + * @list: Member of the rmid_free_lru list when busy == 0. + * + * Depending on the architecture the correct monitor is accessed using + * both @closid and @rmid, or @rmid only. + * + * Take the rdtgroup_mutex when accessing. + */ struct rmid_entry { + u32 closid; u32 rmid; int busy; struct list_head list; @@ -38,6 +52,13 @@ struct rmid_entry { static LIST_HEAD(rmid_free_lru); /* + * @closid_num_dirty_rmid The number of dirty RMID each CLOSID has. + * Only allocated when CONFIG_RESCTRL_RMID_DEPENDS_ON_CLOSID is defined. + * Indexed by CLOSID. Protected by rdtgroup_mutex. + */ +static u32 *closid_num_dirty_rmid; + +/* * @rmid_limbo_count - count of currently unused but (potentially) * dirty RMIDs. * This counts RMIDs that no one is currently using but that @@ -136,12 +157,29 @@ static inline u64 get_corrected_mbm_count(u32 rmid, unsigned long val) return val; } -static inline struct rmid_entry *__rmid_entry(u32 rmid) +/* + * x86 and arm64 differ in their handling of monitoring. + * x86's RMID are independent numbers, there is only one source of traffic + * with an RMID value of '1'. + * arm64's PMG extends the PARTID/CLOSID space, there are multiple sources of + * traffic with a PMG value of '1', one for each CLOSID, meaning the RMID + * value is no longer unique. + * To account for this, resctrl uses an index. On x86 this is just the RMID, + * on arm64 it encodes the CLOSID and RMID. This gives a unique number. + * + * The domain's rmid_busy_llc and rmid_ptrs[] are sized by index. The arch code + * must accept an attempt to read every index. + */ +static inline struct rmid_entry *__rmid_entry(u32 idx) { struct rmid_entry *entry; + u32 closid, rmid; + + entry = &rmid_ptrs[idx]; + resctrl_arch_rmid_idx_decode(idx, &closid, &rmid); - entry = &rmid_ptrs[rmid]; - WARN_ON(entry->rmid != rmid); + WARN_ON_ONCE(entry->closid != closid); + WARN_ON_ONCE(entry->rmid != rmid); return entry; } @@ -190,7 +228,8 @@ static struct arch_mbm_state *get_arch_mbm_state(struct rdt_hw_domain *hw_dom, } void resctrl_arch_reset_rmid(struct rdt_resource *r, struct rdt_domain *d, - u32 rmid, enum resctrl_event_id eventid) + u32 unused, u32 rmid, + enum resctrl_event_id eventid) { struct rdt_hw_domain *hw_dom = resctrl_to_arch_dom(d); struct arch_mbm_state *am; @@ -230,7 +269,8 @@ static u64 mbm_overflow_count(u64 prev_msr, u64 cur_msr, unsigned int width) } int resctrl_arch_rmid_read(struct rdt_resource *r, struct rdt_domain *d, - u32 rmid, enum resctrl_event_id eventid, u64 *val) + u32 unused, u32 rmid, enum resctrl_event_id eventid, + u64 *val, void *ignored) { struct rdt_hw_resource *hw_res = resctrl_to_arch_res(r); struct rdt_hw_domain *hw_dom = resctrl_to_arch_dom(d); @@ -238,6 +278,8 @@ int resctrl_arch_rmid_read(struct rdt_resource *r, struct rdt_domain *d, u64 msr_val, chunks; int ret; + resctrl_arch_rmid_read_context_check(); + if (!cpumask_test_cpu(smp_processor_id(), &d->cpu_mask)) return -EINVAL; @@ -260,6 +302,17 @@ int resctrl_arch_rmid_read(struct rdt_resource *r, struct rdt_domain *d, return 0; } +static void limbo_release_entry(struct rmid_entry *entry) +{ + lockdep_assert_held(&rdtgroup_mutex); + + rmid_limbo_count--; + list_add_tail(&entry->list, &rmid_free_lru); + + if (IS_ENABLED(CONFIG_RESCTRL_RMID_DEPENDS_ON_CLOSID)) + closid_num_dirty_rmid[entry->closid]--; +} + /* * Check the RMIDs that are marked as busy for this domain. If the * reported LLC occupancy is below the threshold clear the busy bit and @@ -269,11 +322,20 @@ int resctrl_arch_rmid_read(struct rdt_resource *r, struct rdt_domain *d, void __check_limbo(struct rdt_domain *d, bool force_free) { struct rdt_resource *r = &rdt_resources_all[RDT_RESOURCE_L3].r_resctrl; + u32 idx_limit = resctrl_arch_system_num_rmid_idx(); struct rmid_entry *entry; - u32 crmid = 1, nrmid; + u32 idx, cur_idx = 1; + void *arch_mon_ctx; bool rmid_dirty; u64 val = 0; + arch_mon_ctx = resctrl_arch_mon_ctx_alloc(r, QOS_L3_OCCUP_EVENT_ID); + if (IS_ERR(arch_mon_ctx)) { + pr_warn_ratelimited("Failed to allocate monitor context: %ld", + PTR_ERR(arch_mon_ctx)); + return; + } + /* * Skip RMID 0 and start from RMID 1 and check all the RMIDs that * are marked as busy for occupancy < threshold. If the occupancy @@ -281,53 +343,125 @@ void __check_limbo(struct rdt_domain *d, bool force_free) * RMID and move it to the free list when the counter reaches 0. */ for (;;) { - nrmid = find_next_bit(d->rmid_busy_llc, r->num_rmid, crmid); - if (nrmid >= r->num_rmid) + idx = find_next_bit(d->rmid_busy_llc, idx_limit, cur_idx); + if (idx >= idx_limit) break; - entry = __rmid_entry(nrmid); - - if (resctrl_arch_rmid_read(r, d, entry->rmid, - QOS_L3_OCCUP_EVENT_ID, &val)) { + entry = __rmid_entry(idx); + if (resctrl_arch_rmid_read(r, d, entry->closid, entry->rmid, + QOS_L3_OCCUP_EVENT_ID, &val, + arch_mon_ctx)) { rmid_dirty = true; } else { rmid_dirty = (val >= resctrl_rmid_realloc_threshold); } if (force_free || !rmid_dirty) { - clear_bit(entry->rmid, d->rmid_busy_llc); - if (!--entry->busy) { - rmid_limbo_count--; - list_add_tail(&entry->list, &rmid_free_lru); - } + clear_bit(idx, d->rmid_busy_llc); + if (!--entry->busy) + limbo_release_entry(entry); } - crmid = nrmid + 1; + cur_idx = idx + 1; } + + resctrl_arch_mon_ctx_free(r, QOS_L3_OCCUP_EVENT_ID, arch_mon_ctx); } -bool has_busy_rmid(struct rdt_resource *r, struct rdt_domain *d) +bool has_busy_rmid(struct rdt_domain *d) { - return find_first_bit(d->rmid_busy_llc, r->num_rmid) != r->num_rmid; + u32 idx_limit = resctrl_arch_system_num_rmid_idx(); + + return find_first_bit(d->rmid_busy_llc, idx_limit) != idx_limit; +} + +static struct rmid_entry *resctrl_find_free_rmid(u32 closid) +{ + struct rmid_entry *itr; + u32 itr_idx, cmp_idx; + + if (list_empty(&rmid_free_lru)) + return rmid_limbo_count ? ERR_PTR(-EBUSY) : ERR_PTR(-ENOSPC); + + list_for_each_entry(itr, &rmid_free_lru, list) { + /* + * Get the index of this free RMID, and the index it would need + * to be if it were used with this CLOSID. + * If the CLOSID is irrelevant on this architecture, the two + * index values are always the same on every entry and thus the + * very first entry will be returned. + */ + itr_idx = resctrl_arch_rmid_idx_encode(itr->closid, itr->rmid); + cmp_idx = resctrl_arch_rmid_idx_encode(closid, itr->rmid); + + if (itr_idx == cmp_idx) + return itr; + } + + return ERR_PTR(-ENOSPC); +} + +/** + * resctrl_find_cleanest_closid() - Find a CLOSID where all the associated + * RMID are clean, or the CLOSID that has + * the most clean RMID. + * + * MPAM's equivalent of RMID are per-CLOSID, meaning a freshly allocated CLOSID + * may not be able to allocate clean RMID. To avoid this the allocator will + * choose the CLOSID with the most clean RMID. + * + * When the CLOSID and RMID are independent numbers, the first free CLOSID will + * be returned. + */ +int resctrl_find_cleanest_closid(void) +{ + u32 cleanest_closid = ~0; + int i = 0; + + lockdep_assert_held(&rdtgroup_mutex); + + if (!IS_ENABLED(CONFIG_RESCTRL_RMID_DEPENDS_ON_CLOSID)) + return -EIO; + + for (i = 0; i < closids_supported(); i++) { + int num_dirty; + + if (closid_allocated(i)) + continue; + + num_dirty = closid_num_dirty_rmid[i]; + if (num_dirty == 0) + return i; + + if (cleanest_closid == ~0) + cleanest_closid = i; + + if (num_dirty < closid_num_dirty_rmid[cleanest_closid]) + cleanest_closid = i; + } + + if (cleanest_closid == ~0) + return -ENOSPC; + + return cleanest_closid; } /* - * As of now the RMIDs allocation is global. - * However we keep track of which packages the RMIDs - * are used to optimize the limbo list management. + * For MPAM the RMID value is not unique, and has to be considered with + * the CLOSID. The (CLOSID, RMID) pair is allocated on all domains, which + * allows all domains to be managed by a single free list. + * Each domain also has a rmid_busy_llc to reduce the work of the limbo handler. */ -int alloc_rmid(void) +int alloc_rmid(u32 closid) { struct rmid_entry *entry; lockdep_assert_held(&rdtgroup_mutex); - if (list_empty(&rmid_free_lru)) - return rmid_limbo_count ? -EBUSY : -ENOSPC; + entry = resctrl_find_free_rmid(closid); + if (IS_ERR(entry)) + return PTR_ERR(entry); - entry = list_first_entry(&rmid_free_lru, - struct rmid_entry, list); list_del(&entry->list); - return entry->rmid; } @@ -335,47 +469,50 @@ static void add_rmid_to_limbo(struct rmid_entry *entry) { struct rdt_resource *r = &rdt_resources_all[RDT_RESOURCE_L3].r_resctrl; struct rdt_domain *d; - int cpu, err; - u64 val = 0; + u32 idx; + + lockdep_assert_held(&rdtgroup_mutex); + + /* Walking r->domains, ensure it can't race with cpuhp */ + lockdep_assert_cpus_held(); + + idx = resctrl_arch_rmid_idx_encode(entry->closid, entry->rmid); entry->busy = 0; - cpu = get_cpu(); list_for_each_entry(d, &r->domains, list) { - if (cpumask_test_cpu(cpu, &d->cpu_mask)) { - err = resctrl_arch_rmid_read(r, d, entry->rmid, - QOS_L3_OCCUP_EVENT_ID, - &val); - if (err || val <= resctrl_rmid_realloc_threshold) - continue; - } - /* * For the first limbo RMID in the domain, * setup up the limbo worker. */ - if (!has_busy_rmid(r, d)) - cqm_setup_limbo_handler(d, CQM_LIMBOCHECK_INTERVAL); - set_bit(entry->rmid, d->rmid_busy_llc); + if (!has_busy_rmid(d)) + cqm_setup_limbo_handler(d, CQM_LIMBOCHECK_INTERVAL, + RESCTRL_PICK_ANY_CPU); + set_bit(idx, d->rmid_busy_llc); entry->busy++; } - put_cpu(); - if (entry->busy) - rmid_limbo_count++; - else - list_add_tail(&entry->list, &rmid_free_lru); + rmid_limbo_count++; + if (IS_ENABLED(CONFIG_RESCTRL_RMID_DEPENDS_ON_CLOSID)) + closid_num_dirty_rmid[entry->closid]++; } -void free_rmid(u32 rmid) +void free_rmid(u32 closid, u32 rmid) { + u32 idx = resctrl_arch_rmid_idx_encode(closid, rmid); struct rmid_entry *entry; - if (!rmid) - return; - lockdep_assert_held(&rdtgroup_mutex); - entry = __rmid_entry(rmid); + /* + * Do not allow the default rmid to be free'd. Comparing by index + * allows architectures that ignore the closid parameter to avoid an + * unnecessary check. + */ + if (idx == resctrl_arch_rmid_idx_encode(RESCTRL_RESERVED_CLOSID, + RESCTRL_RESERVED_RMID)) + return; + + entry = __rmid_entry(idx); if (is_llc_occupancy_enabled()) add_rmid_to_limbo(entry); @@ -383,33 +520,36 @@ void free_rmid(u32 rmid) list_add_tail(&entry->list, &rmid_free_lru); } -static struct mbm_state *get_mbm_state(struct rdt_domain *d, u32 rmid, - enum resctrl_event_id evtid) +static struct mbm_state *get_mbm_state(struct rdt_domain *d, u32 closid, + u32 rmid, enum resctrl_event_id evtid) { + u32 idx = resctrl_arch_rmid_idx_encode(closid, rmid); + switch (evtid) { case QOS_L3_MBM_TOTAL_EVENT_ID: - return &d->mbm_total[rmid]; + return &d->mbm_total[idx]; case QOS_L3_MBM_LOCAL_EVENT_ID: - return &d->mbm_local[rmid]; + return &d->mbm_local[idx]; default: return NULL; } } -static int __mon_event_count(u32 rmid, struct rmid_read *rr) +static int __mon_event_count(u32 closid, u32 rmid, struct rmid_read *rr) { struct mbm_state *m; u64 tval = 0; if (rr->first) { - resctrl_arch_reset_rmid(rr->r, rr->d, rmid, rr->evtid); - m = get_mbm_state(rr->d, rmid, rr->evtid); + resctrl_arch_reset_rmid(rr->r, rr->d, closid, rmid, rr->evtid); + m = get_mbm_state(rr->d, closid, rmid, rr->evtid); if (m) memset(m, 0, sizeof(struct mbm_state)); return 0; } - rr->err = resctrl_arch_rmid_read(rr->r, rr->d, rmid, rr->evtid, &tval); + rr->err = resctrl_arch_rmid_read(rr->r, rr->d, closid, rmid, rr->evtid, + &tval, rr->arch_mon_ctx); if (rr->err) return rr->err; @@ -421,6 +561,7 @@ static int __mon_event_count(u32 rmid, struct rmid_read *rr) /* * mbm_bw_count() - Update bw count from values previously read by * __mon_event_count(). + * @closid: The closid used to identify the cached mbm_state. * @rmid: The rmid used to identify the cached mbm_state. * @rr: The struct rmid_read populated by __mon_event_count(). * @@ -429,9 +570,10 @@ static int __mon_event_count(u32 rmid, struct rmid_read *rr) * __mon_event_count() is compared with the chunks value from the previous * invocation. This must be called once per second to maintain values in MBps. */ -static void mbm_bw_count(u32 rmid, struct rmid_read *rr) +static void mbm_bw_count(u32 closid, u32 rmid, struct rmid_read *rr) { - struct mbm_state *m = &rr->d->mbm_local[rmid]; + u32 idx = resctrl_arch_rmid_idx_encode(closid, rmid); + struct mbm_state *m = &rr->d->mbm_local[idx]; u64 cur_bw, bytes, cur_bytes; cur_bytes = rr->val; @@ -440,14 +582,11 @@ static void mbm_bw_count(u32 rmid, struct rmid_read *rr) cur_bw = bytes / SZ_1M; - if (m->delta_comp) - m->delta_bw = abs(cur_bw - m->prev_bw); - m->delta_comp = false; m->prev_bw = cur_bw; } /* - * This is called via IPI to read the CQM/MBM counters + * This is scheduled by mon_event_read() to read the CQM/MBM counters * on a domain. */ void mon_event_count(void *info) @@ -459,7 +598,7 @@ void mon_event_count(void *info) rdtgrp = rr->rgrp; - ret = __mon_event_count(rdtgrp->mon.rmid, rr); + ret = __mon_event_count(rdtgrp->closid, rdtgrp->mon.rmid, rr); /* * For Ctrl groups read data from child monitor groups and @@ -470,7 +609,8 @@ void mon_event_count(void *info) if (rdtgrp->type == RDTCTRL_GROUP) { list_for_each_entry(entry, head, mon.crdtgrp_list) { - if (__mon_event_count(entry->mon.rmid, rr) == 0) + if (__mon_event_count(entry->closid, entry->mon.rmid, + rr) == 0) ret = 0; } } @@ -520,9 +660,9 @@ static void update_mba_bw(struct rdtgroup *rgrp, struct rdt_domain *dom_mbm) { u32 closid, rmid, cur_msr_val, new_msr_val; struct mbm_state *pmbm_data, *cmbm_data; - u32 cur_bw, delta_bw, user_bw; struct rdt_resource *r_mba; struct rdt_domain *dom_mba; + u32 cur_bw, user_bw, idx; struct list_head *head; struct rdtgroup *entry; @@ -533,7 +673,8 @@ static void update_mba_bw(struct rdtgroup *rgrp, struct rdt_domain *dom_mbm) closid = rgrp->closid; rmid = rgrp->mon.rmid; - pmbm_data = &dom_mbm->mbm_local[rmid]; + idx = resctrl_arch_rmid_idx_encode(closid, rmid); + pmbm_data = &dom_mbm->mbm_local[idx]; dom_mba = get_domain_from_cpu(smp_processor_id(), r_mba); if (!dom_mba) { @@ -543,7 +684,6 @@ static void update_mba_bw(struct rdtgroup *rgrp, struct rdt_domain *dom_mbm) cur_bw = pmbm_data->prev_bw; user_bw = dom_mba->mbps_val[closid]; - delta_bw = pmbm_data->delta_bw; /* MBA resource doesn't support CDP */ cur_msr_val = resctrl_arch_get_config(r_mba, dom_mba, closid, CDP_NONE); @@ -555,52 +695,35 @@ static void update_mba_bw(struct rdtgroup *rgrp, struct rdt_domain *dom_mbm) list_for_each_entry(entry, head, mon.crdtgrp_list) { cmbm_data = &dom_mbm->mbm_local[entry->mon.rmid]; cur_bw += cmbm_data->prev_bw; - delta_bw += cmbm_data->delta_bw; } /* * Scale up/down the bandwidth linearly for the ctrl group. The * bandwidth step is the bandwidth granularity specified by the * hardware. - * - * The delta_bw is used when increasing the bandwidth so that we - * dont alternately increase and decrease the control values - * continuously. - * - * For ex: consider cur_bw = 90MBps, user_bw = 100MBps and if - * bandwidth step is 20MBps(> user_bw - cur_bw), we would keep - * switching between 90 and 110 continuously if we only check - * cur_bw < user_bw. + * Always increase throttling if current bandwidth is above the + * target set by user. + * But avoid thrashing up and down on every poll by checking + * whether a decrease in throttling is likely to push the group + * back over target. E.g. if currently throttling to 30% of bandwidth + * on a system with 10% granularity steps, check whether moving to + * 40% would go past the limit by multiplying current bandwidth by + * "(30 + 10) / 30". */ if (cur_msr_val > r_mba->membw.min_bw && user_bw < cur_bw) { new_msr_val = cur_msr_val - r_mba->membw.bw_gran; } else if (cur_msr_val < MAX_MBA_BW && - (user_bw > (cur_bw + delta_bw))) { + (user_bw > (cur_bw * (cur_msr_val + r_mba->membw.min_bw) / cur_msr_val))) { new_msr_val = cur_msr_val + r_mba->membw.bw_gran; } else { return; } resctrl_arch_update_one(r_mba, dom_mba, closid, CDP_NONE, new_msr_val); - - /* - * Delta values are updated dynamically package wise for each - * rdtgrp every time the throttle MSR changes value. - * - * This is because (1)the increase in bandwidth is not perfectly - * linear and only "approximately" linear even when the hardware - * says it is linear.(2)Also since MBA is a core specific - * mechanism, the delta values vary based on number of cores used - * by the rdtgrp. - */ - pmbm_data->delta_comp = true; - list_for_each_entry(entry, head, mon.crdtgrp_list) { - cmbm_data = &dom_mbm->mbm_local[entry->mon.rmid]; - cmbm_data->delta_comp = true; - } } -static void mbm_update(struct rdt_resource *r, struct rdt_domain *d, int rmid) +static void mbm_update(struct rdt_resource *r, struct rdt_domain *d, + u32 closid, u32 rmid) { struct rmid_read rr; @@ -615,12 +738,28 @@ static void mbm_update(struct rdt_resource *r, struct rdt_domain *d, int rmid) if (is_mbm_total_enabled()) { rr.evtid = QOS_L3_MBM_TOTAL_EVENT_ID; rr.val = 0; - __mon_event_count(rmid, &rr); + rr.arch_mon_ctx = resctrl_arch_mon_ctx_alloc(rr.r, rr.evtid); + if (IS_ERR(rr.arch_mon_ctx)) { + pr_warn_ratelimited("Failed to allocate monitor context: %ld", + PTR_ERR(rr.arch_mon_ctx)); + return; + } + + __mon_event_count(closid, rmid, &rr); + + resctrl_arch_mon_ctx_free(rr.r, rr.evtid, rr.arch_mon_ctx); } if (is_mbm_local_enabled()) { rr.evtid = QOS_L3_MBM_LOCAL_EVENT_ID; rr.val = 0; - __mon_event_count(rmid, &rr); + rr.arch_mon_ctx = resctrl_arch_mon_ctx_alloc(rr.r, rr.evtid); + if (IS_ERR(rr.arch_mon_ctx)) { + pr_warn_ratelimited("Failed to allocate monitor context: %ld", + PTR_ERR(rr.arch_mon_ctx)); + return; + } + + __mon_event_count(closid, rmid, &rr); /* * Call the MBA software controller only for the @@ -628,7 +767,9 @@ static void mbm_update(struct rdt_resource *r, struct rdt_domain *d, int rmid) * the software controller explicitly. */ if (is_mba_sc(NULL)) - mbm_bw_count(rmid, &rr); + mbm_bw_count(closid, rmid, &rr); + + resctrl_arch_mon_ctx_free(rr.r, rr.evtid, rr.arch_mon_ctx); } } @@ -639,106 +780,193 @@ static void mbm_update(struct rdt_resource *r, struct rdt_domain *d, int rmid) void cqm_handle_limbo(struct work_struct *work) { unsigned long delay = msecs_to_jiffies(CQM_LIMBOCHECK_INTERVAL); - int cpu = smp_processor_id(); - struct rdt_resource *r; struct rdt_domain *d; + cpus_read_lock(); mutex_lock(&rdtgroup_mutex); - r = &rdt_resources_all[RDT_RESOURCE_L3].r_resctrl; d = container_of(work, struct rdt_domain, cqm_limbo.work); __check_limbo(d, false); - if (has_busy_rmid(r, d)) - schedule_delayed_work_on(cpu, &d->cqm_limbo, delay); + if (has_busy_rmid(d)) { + d->cqm_work_cpu = cpumask_any_housekeeping(&d->cpu_mask, + RESCTRL_PICK_ANY_CPU); + schedule_delayed_work_on(d->cqm_work_cpu, &d->cqm_limbo, + delay); + } mutex_unlock(&rdtgroup_mutex); + cpus_read_unlock(); } -void cqm_setup_limbo_handler(struct rdt_domain *dom, unsigned long delay_ms) +/** + * cqm_setup_limbo_handler() - Schedule the limbo handler to run for this + * domain. + * @dom: The domain the limbo handler should run for. + * @delay_ms: How far in the future the handler should run. + * @exclude_cpu: Which CPU the handler should not run on, + * RESCTRL_PICK_ANY_CPU to pick any CPU. + */ +void cqm_setup_limbo_handler(struct rdt_domain *dom, unsigned long delay_ms, + int exclude_cpu) { unsigned long delay = msecs_to_jiffies(delay_ms); int cpu; - cpu = cpumask_any(&dom->cpu_mask); + cpu = cpumask_any_housekeeping(&dom->cpu_mask, exclude_cpu); dom->cqm_work_cpu = cpu; - schedule_delayed_work_on(cpu, &dom->cqm_limbo, delay); + if (cpu < nr_cpu_ids) + schedule_delayed_work_on(cpu, &dom->cqm_limbo, delay); } void mbm_handle_overflow(struct work_struct *work) { unsigned long delay = msecs_to_jiffies(MBM_OVERFLOW_INTERVAL); struct rdtgroup *prgrp, *crgrp; - int cpu = smp_processor_id(); struct list_head *head; struct rdt_resource *r; struct rdt_domain *d; + cpus_read_lock(); mutex_lock(&rdtgroup_mutex); - if (!static_branch_likely(&rdt_mon_enable_key)) + /* + * If the filesystem has been unmounted this work no longer needs to + * run. + */ + if (!resctrl_mounted || !resctrl_arch_mon_capable()) goto out_unlock; r = &rdt_resources_all[RDT_RESOURCE_L3].r_resctrl; d = container_of(work, struct rdt_domain, mbm_over.work); list_for_each_entry(prgrp, &rdt_all_groups, rdtgroup_list) { - mbm_update(r, d, prgrp->mon.rmid); + mbm_update(r, d, prgrp->closid, prgrp->mon.rmid); head = &prgrp->mon.crdtgrp_list; list_for_each_entry(crgrp, head, mon.crdtgrp_list) - mbm_update(r, d, crgrp->mon.rmid); + mbm_update(r, d, crgrp->closid, crgrp->mon.rmid); if (is_mba_sc(NULL)) update_mba_bw(prgrp, d); } - schedule_delayed_work_on(cpu, &d->mbm_over, delay); + /* + * Re-check for housekeeping CPUs. This allows the overflow handler to + * move off a nohz_full CPU quickly. + */ + d->mbm_work_cpu = cpumask_any_housekeeping(&d->cpu_mask, + RESCTRL_PICK_ANY_CPU); + schedule_delayed_work_on(d->mbm_work_cpu, &d->mbm_over, delay); out_unlock: mutex_unlock(&rdtgroup_mutex); + cpus_read_unlock(); } -void mbm_setup_overflow_handler(struct rdt_domain *dom, unsigned long delay_ms) +/** + * mbm_setup_overflow_handler() - Schedule the overflow handler to run for this + * domain. + * @dom: The domain the overflow handler should run for. + * @delay_ms: How far in the future the handler should run. + * @exclude_cpu: Which CPU the handler should not run on, + * RESCTRL_PICK_ANY_CPU to pick any CPU. + */ +void mbm_setup_overflow_handler(struct rdt_domain *dom, unsigned long delay_ms, + int exclude_cpu) { unsigned long delay = msecs_to_jiffies(delay_ms); int cpu; - if (!static_branch_likely(&rdt_mon_enable_key)) + /* + * When a domain comes online there is no guarantee the filesystem is + * mounted. If not, there is no need to catch counter overflow. + */ + if (!resctrl_mounted || !resctrl_arch_mon_capable()) return; - cpu = cpumask_any(&dom->cpu_mask); + cpu = cpumask_any_housekeeping(&dom->cpu_mask, exclude_cpu); dom->mbm_work_cpu = cpu; - schedule_delayed_work_on(cpu, &dom->mbm_over, delay); + + if (cpu < nr_cpu_ids) + schedule_delayed_work_on(cpu, &dom->mbm_over, delay); } static int dom_data_init(struct rdt_resource *r) { + u32 idx_limit = resctrl_arch_system_num_rmid_idx(); + u32 num_closid = resctrl_arch_get_num_closid(r); struct rmid_entry *entry = NULL; - int i, nr_rmids; + int err = 0, i; + u32 idx; + + mutex_lock(&rdtgroup_mutex); + if (IS_ENABLED(CONFIG_RESCTRL_RMID_DEPENDS_ON_CLOSID)) { + u32 *tmp; + + /* + * If the architecture hasn't provided a sanitised value here, + * this may result in larger arrays than necessary. Resctrl will + * use a smaller system wide value based on the resources in + * use. + */ + tmp = kcalloc(num_closid, sizeof(*tmp), GFP_KERNEL); + if (!tmp) { + err = -ENOMEM; + goto out_unlock; + } - nr_rmids = r->num_rmid; - rmid_ptrs = kcalloc(nr_rmids, sizeof(struct rmid_entry), GFP_KERNEL); - if (!rmid_ptrs) - return -ENOMEM; + closid_num_dirty_rmid = tmp; + } + + rmid_ptrs = kcalloc(idx_limit, sizeof(struct rmid_entry), GFP_KERNEL); + if (!rmid_ptrs) { + if (IS_ENABLED(CONFIG_RESCTRL_RMID_DEPENDS_ON_CLOSID)) { + kfree(closid_num_dirty_rmid); + closid_num_dirty_rmid = NULL; + } + err = -ENOMEM; + goto out_unlock; + } - for (i = 0; i < nr_rmids; i++) { + for (i = 0; i < idx_limit; i++) { entry = &rmid_ptrs[i]; INIT_LIST_HEAD(&entry->list); - entry->rmid = i; + resctrl_arch_rmid_idx_decode(i, &entry->closid, &entry->rmid); list_add_tail(&entry->list, &rmid_free_lru); } /* - * RMID 0 is special and is always allocated. It's used for all - * tasks that are not monitored. + * RESCTRL_RESERVED_CLOSID and RESCTRL_RESERVED_RMID are special and + * are always allocated. These are used for the rdtgroup_default + * control group, which will be setup later in rdtgroup_init(). */ - entry = __rmid_entry(0); + idx = resctrl_arch_rmid_idx_encode(RESCTRL_RESERVED_CLOSID, + RESCTRL_RESERVED_RMID); + entry = __rmid_entry(idx); list_del(&entry->list); - return 0; +out_unlock: + mutex_unlock(&rdtgroup_mutex); + + return err; +} + +static void __exit dom_data_exit(void) +{ + mutex_lock(&rdtgroup_mutex); + + if (IS_ENABLED(CONFIG_RESCTRL_RMID_DEPENDS_ON_CLOSID)) { + kfree(closid_num_dirty_rmid); + closid_num_dirty_rmid = NULL; + } + + kfree(rmid_ptrs); + rmid_ptrs = NULL; + + mutex_unlock(&rdtgroup_mutex); } static struct mon_evt llc_occupancy_event = { @@ -813,6 +1041,12 @@ int __init rdt_get_mon_l3_config(struct rdt_resource *r) return ret; if (rdt_cpu_has(X86_FEATURE_BMEC)) { + u32 eax, ebx, ecx, edx; + + /* Detect list of bandwidth sources that can be tracked */ + cpuid_count(0x80000020, 3, &eax, &ebx, &ecx, &edx); + hw_res->mbm_cfg_mask = ecx & MAX_EVT_CONFIG_BITS; + if (rdt_cpu_has(X86_FEATURE_CQM_MBM_TOTAL)) { mbm_total_event.configurable = true; mbm_config_rftype_init("mbm_total_bytes_config"); @@ -830,6 +1064,11 @@ int __init rdt_get_mon_l3_config(struct rdt_resource *r) return 0; } +void __exit rdt_put_mon_l3_config(void) +{ + dom_data_exit(); +} + void __init intel_rdt_mbm_apply_quirk(void) { int cf_index; diff --git a/arch/x86/kernel/cpu/resctrl/pseudo_lock.c b/arch/x86/kernel/cpu/resctrl/pseudo_lock.c index 8f559eeae08e..884b88e25141 100644 --- a/arch/x86/kernel/cpu/resctrl/pseudo_lock.c +++ b/arch/x86/kernel/cpu/resctrl/pseudo_lock.c @@ -581,7 +581,7 @@ static int rdtgroup_locksetup_user_restrict(struct rdtgroup *rdtgrp) if (ret) goto err_cpus; - if (rdt_mon_capable) { + if (resctrl_arch_mon_capable()) { ret = rdtgroup_kn_mode_restrict(rdtgrp, "mon_groups"); if (ret) goto err_cpus_list; @@ -628,7 +628,7 @@ static int rdtgroup_locksetup_user_restore(struct rdtgroup *rdtgrp) if (ret) goto err_cpus; - if (rdt_mon_capable) { + if (resctrl_arch_mon_capable()) { ret = rdtgroup_kn_mode_restore(rdtgrp, "mon_groups", 0777); if (ret) goto err_cpus_list; @@ -752,7 +752,7 @@ int rdtgroup_locksetup_enter(struct rdtgroup *rdtgrp) * anymore when this group would be used for pseudo-locking. This * is safe to call on platforms not capable of monitoring. */ - free_rmid(rdtgrp->mon.rmid); + free_rmid(rdtgrp->closid, rdtgrp->mon.rmid); ret = 0; goto out; @@ -776,8 +776,8 @@ int rdtgroup_locksetup_exit(struct rdtgroup *rdtgrp) { int ret; - if (rdt_mon_capable) { - ret = alloc_rmid(); + if (resctrl_arch_mon_capable()) { + ret = alloc_rmid(rdtgrp->closid); if (ret < 0) { rdt_last_cmd_puts("Out of RMIDs\n"); return ret; @@ -787,7 +787,7 @@ int rdtgroup_locksetup_exit(struct rdtgroup *rdtgrp) ret = rdtgroup_locksetup_user_restore(rdtgrp); if (ret) { - free_rmid(rdtgrp->mon.rmid); + free_rmid(rdtgrp->closid, rdtgrp->mon.rmid); return ret; } @@ -844,6 +844,9 @@ bool rdtgroup_pseudo_locked_in_hierarchy(struct rdt_domain *d) struct rdt_domain *d_i; bool ret = false; + /* Walking r->domains, ensure it can't race with cpuhp */ + lockdep_assert_cpus_held(); + if (!zalloc_cpumask_var(&cpu_with_psl, GFP_KERNEL)) return true; diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c index 69a1de92384a..011e17efb1a6 100644 --- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c +++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c @@ -35,6 +35,10 @@ DEFINE_STATIC_KEY_FALSE(rdt_enable_key); DEFINE_STATIC_KEY_FALSE(rdt_mon_enable_key); DEFINE_STATIC_KEY_FALSE(rdt_alloc_enable_key); + +/* Mutex to protect rdtgroup access. */ +DEFINE_MUTEX(rdtgroup_mutex); + static struct kernfs_root *rdt_root; struct rdtgroup rdtgroup_default; LIST_HEAD(rdt_all_groups); @@ -42,6 +46,9 @@ LIST_HEAD(rdt_all_groups); /* list of entries for the schemata file */ LIST_HEAD(resctrl_schema_all); +/* The filesystem can only be mounted once. */ +bool resctrl_mounted; + /* Kernel fs node for "info" directory under root */ static struct kernfs_node *kn_info; @@ -102,7 +109,7 @@ void rdt_staged_configs_clear(void) * * Using a global CLOSID across all resources has some advantages and * some drawbacks: - * + We can simply set "current->closid" to assign a task to a resource + * + We can simply set current's closid to assign a task to a resource * group. * + Context switch code can avoid extra memory references deciding which * CLOSID to load into the PQR_ASSOC MSR @@ -111,7 +118,7 @@ void rdt_staged_configs_clear(void) * - Our choices on how to configure each resource become progressively more * limited as the number of resources grows. */ -static int closid_free_map; +static unsigned long closid_free_map; static int closid_free_map_len; int closids_supported(void) @@ -130,26 +137,39 @@ static void closid_init(void) closid_free_map = BIT_MASK(rdt_min_closid) - 1; - /* CLOSID 0 is always reserved for the default group */ - closid_free_map &= ~1; + /* RESCTRL_RESERVED_CLOSID is always reserved for the default group */ + __clear_bit(RESCTRL_RESERVED_CLOSID, &closid_free_map); closid_free_map_len = rdt_min_closid; } static int closid_alloc(void) { - u32 closid = ffs(closid_free_map); + int cleanest_closid; + u32 closid; - if (closid == 0) - return -ENOSPC; - closid--; - closid_free_map &= ~(1 << closid); + lockdep_assert_held(&rdtgroup_mutex); + + if (IS_ENABLED(CONFIG_RESCTRL_RMID_DEPENDS_ON_CLOSID)) { + cleanest_closid = resctrl_find_cleanest_closid(); + if (cleanest_closid < 0) + return cleanest_closid; + closid = cleanest_closid; + } else { + closid = ffs(closid_free_map); + if (closid == 0) + return -ENOSPC; + closid--; + } + __clear_bit(closid, &closid_free_map); return closid; } void closid_free(int closid) { - closid_free_map |= 1 << closid; + lockdep_assert_held(&rdtgroup_mutex); + + __set_bit(closid, &closid_free_map); } /** @@ -159,9 +179,11 @@ void closid_free(int closid) * Return: true if @closid is currently associated with a resource group, * false if @closid is free */ -static bool closid_allocated(unsigned int closid) +bool closid_allocated(unsigned int closid) { - return (closid_free_map & (1 << closid)) == 0; + lockdep_assert_held(&rdtgroup_mutex); + + return !test_bit(closid, &closid_free_map); } /** @@ -559,14 +581,26 @@ static void update_task_closid_rmid(struct task_struct *t) _update_task_closid_rmid(t); } +static bool task_in_rdtgroup(struct task_struct *tsk, struct rdtgroup *rdtgrp) +{ + u32 closid, rmid = rdtgrp->mon.rmid; + + if (rdtgrp->type == RDTCTRL_GROUP) + closid = rdtgrp->closid; + else if (rdtgrp->type == RDTMON_GROUP) + closid = rdtgrp->mon.parent->closid; + else + return false; + + return resctrl_arch_match_closid(tsk, closid) && + resctrl_arch_match_rmid(tsk, closid, rmid); +} + static int __rdtgroup_move_task(struct task_struct *tsk, struct rdtgroup *rdtgrp) { /* If the task is already in rdtgrp, no need to move the task. */ - if ((rdtgrp->type == RDTCTRL_GROUP && tsk->closid == rdtgrp->closid && - tsk->rmid == rdtgrp->mon.rmid) || - (rdtgrp->type == RDTMON_GROUP && tsk->rmid == rdtgrp->mon.rmid && - tsk->closid == rdtgrp->mon.parent->closid)) + if (task_in_rdtgroup(tsk, rdtgrp)) return 0; /* @@ -577,19 +611,19 @@ static int __rdtgroup_move_task(struct task_struct *tsk, * For monitor groups, can move the tasks only from * their parent CTRL group. */ - - if (rdtgrp->type == RDTCTRL_GROUP) { - WRITE_ONCE(tsk->closid, rdtgrp->closid); - WRITE_ONCE(tsk->rmid, rdtgrp->mon.rmid); - } else if (rdtgrp->type == RDTMON_GROUP) { - if (rdtgrp->mon.parent->closid == tsk->closid) { - WRITE_ONCE(tsk->rmid, rdtgrp->mon.rmid); - } else { - rdt_last_cmd_puts("Can't move task to different control group\n"); - return -EINVAL; - } + if (rdtgrp->type == RDTMON_GROUP && + !resctrl_arch_match_closid(tsk, rdtgrp->mon.parent->closid)) { + rdt_last_cmd_puts("Can't move task to different control group\n"); + return -EINVAL; } + if (rdtgrp->type == RDTMON_GROUP) + resctrl_arch_set_closid_rmid(tsk, rdtgrp->mon.parent->closid, + rdtgrp->mon.rmid); + else + resctrl_arch_set_closid_rmid(tsk, rdtgrp->closid, + rdtgrp->mon.rmid); + /* * Ensure the task's closid and rmid are written before determining if * the task is current that will decide if it will be interrupted. @@ -611,14 +645,15 @@ static int __rdtgroup_move_task(struct task_struct *tsk, static bool is_closid_match(struct task_struct *t, struct rdtgroup *r) { - return (rdt_alloc_capable && - (r->type == RDTCTRL_GROUP) && (t->closid == r->closid)); + return (resctrl_arch_alloc_capable() && (r->type == RDTCTRL_GROUP) && + resctrl_arch_match_closid(t, r->closid)); } static bool is_rmid_match(struct task_struct *t, struct rdtgroup *r) { - return (rdt_mon_capable && - (r->type == RDTMON_GROUP) && (t->rmid == r->mon.rmid)); + return (resctrl_arch_mon_capable() && (r->type == RDTMON_GROUP) && + resctrl_arch_match_rmid(t, r->mon.parent->closid, + r->mon.rmid)); } /** @@ -853,7 +888,7 @@ int proc_resctrl_show(struct seq_file *s, struct pid_namespace *ns, mutex_lock(&rdtgroup_mutex); /* Return empty if resctrl has not been mounted. */ - if (!static_branch_unlikely(&rdt_enable_key)) { + if (!resctrl_mounted) { seq_puts(s, "res:\nmon:\n"); goto unlock; } @@ -869,7 +904,7 @@ int proc_resctrl_show(struct seq_file *s, struct pid_namespace *ns, rdtg->mode != RDT_MODE_EXCLUSIVE) continue; - if (rdtg->closid != tsk->closid) + if (!resctrl_arch_match_closid(tsk, rdtg->closid)) continue; seq_printf(s, "res:%s%s\n", (rdtg == &rdtgroup_default) ? "/" : "", @@ -877,7 +912,8 @@ int proc_resctrl_show(struct seq_file *s, struct pid_namespace *ns, seq_puts(s, "mon:"); list_for_each_entry(crg, &rdtg->mon.crdtgrp_list, mon.crdtgrp_list) { - if (tsk->rmid != crg->mon.rmid) + if (!resctrl_arch_match_rmid(tsk, crg->mon.parent->closid, + crg->mon.rmid)) continue; seq_printf(s, "%s", crg->kn->name); break; @@ -982,6 +1018,7 @@ static int rdt_bit_usage_show(struct kernfs_open_file *of, bool sep = false; u32 ctrl_val; + cpus_read_lock(); mutex_lock(&rdtgroup_mutex); hw_shareable = r->cache.shareable_bits; list_for_each_entry(dom, &r->domains, list) { @@ -1042,6 +1079,7 @@ static int rdt_bit_usage_show(struct kernfs_open_file *of, } seq_putc(seq, '\n'); mutex_unlock(&rdtgroup_mutex); + cpus_read_unlock(); return 0; } @@ -1297,6 +1335,9 @@ static bool rdtgroup_mode_test_exclusive(struct rdtgroup *rdtgrp) struct rdt_domain *d; u32 ctrl; + /* Walking r->domains, ensure it can't race with cpuhp */ + lockdep_assert_cpus_held(); + list_for_each_entry(s, &resctrl_schema_all, list) { r = s->res; if (r->rid == RDT_RESOURCE_MBA || r->rid == RDT_RESOURCE_SMBA) @@ -1561,6 +1602,7 @@ static int mbm_config_show(struct seq_file *s, struct rdt_resource *r, u32 evtid struct rdt_domain *dom; bool sep = false; + cpus_read_lock(); mutex_lock(&rdtgroup_mutex); list_for_each_entry(dom, &r->domains, list) { @@ -1577,6 +1619,7 @@ static int mbm_config_show(struct seq_file *s, struct rdt_resource *r, u32 evtid seq_puts(s, "\n"); mutex_unlock(&rdtgroup_mutex); + cpus_read_unlock(); return 0; } @@ -1614,17 +1657,10 @@ static void mon_event_config_write(void *info) wrmsr(MSR_IA32_EVT_CFG_BASE + index, mon_info->mon_config, 0); } -static int mbm_config_write_domain(struct rdt_resource *r, - struct rdt_domain *d, u32 evtid, u32 val) +static void mbm_config_write_domain(struct rdt_resource *r, + struct rdt_domain *d, u32 evtid, u32 val) { struct mon_config_info mon_info = {0}; - int ret = 0; - - /* mon_config cannot be more than the supported set of events */ - if (val > MAX_EVT_CONFIG_BITS) { - rdt_last_cmd_puts("Invalid event configuration\n"); - return -EINVAL; - } /* * Read the current config value first. If both are the same then @@ -1633,7 +1669,7 @@ static int mbm_config_write_domain(struct rdt_resource *r, mon_info.evtid = evtid; mondata_config_read(d, &mon_info); if (mon_info.mon_config == val) - goto out; + return; mon_info.mon_config = val; @@ -1656,17 +1692,17 @@ static int mbm_config_write_domain(struct rdt_resource *r, * mbm_local and mbm_total counts for all the RMIDs. */ resctrl_arch_reset_rmid_all(r, d); - -out: - return ret; } static int mon_config_write(struct rdt_resource *r, char *tok, u32 evtid) { + struct rdt_hw_resource *hw_res = resctrl_to_arch_res(r); char *dom_str = NULL, *id_str; unsigned long dom_id, val; struct rdt_domain *d; - int ret = 0; + + /* Walking r->domains, ensure it can't race with cpuhp */ + lockdep_assert_cpus_held(); next: if (!tok || tok[0] == '\0') @@ -1686,11 +1722,16 @@ next: return -EINVAL; } + /* Value from user cannot be more than the supported set of events */ + if ((val & hw_res->mbm_cfg_mask) != val) { + rdt_last_cmd_printf("Invalid event configuration: max valid mask is 0x%02x\n", + hw_res->mbm_cfg_mask); + return -EINVAL; + } + list_for_each_entry(d, &r->domains, list) { if (d->id == dom_id) { - ret = mbm_config_write_domain(r, d, evtid, val); - if (ret) - return -EINVAL; + mbm_config_write_domain(r, d, evtid, val); goto next; } } @@ -1709,6 +1750,7 @@ static ssize_t mbm_total_bytes_config_write(struct kernfs_open_file *of, if (nbytes == 0 || buf[nbytes - 1] != '\n') return -EINVAL; + cpus_read_lock(); mutex_lock(&rdtgroup_mutex); rdt_last_cmd_clear(); @@ -1718,6 +1760,7 @@ static ssize_t mbm_total_bytes_config_write(struct kernfs_open_file *of, ret = mon_config_write(r, buf, QOS_L3_MBM_TOTAL_EVENT_ID); mutex_unlock(&rdtgroup_mutex); + cpus_read_unlock(); return ret ?: nbytes; } @@ -1733,6 +1776,7 @@ static ssize_t mbm_local_bytes_config_write(struct kernfs_open_file *of, if (nbytes == 0 || buf[nbytes - 1] != '\n') return -EINVAL; + cpus_read_lock(); mutex_lock(&rdtgroup_mutex); rdt_last_cmd_clear(); @@ -1742,6 +1786,7 @@ static ssize_t mbm_local_bytes_config_write(struct kernfs_open_file *of, ret = mon_config_write(r, buf, QOS_L3_MBM_LOCAL_EVENT_ID); mutex_unlock(&rdtgroup_mutex); + cpus_read_unlock(); return ret ?: nbytes; } @@ -2218,6 +2263,9 @@ static int set_cache_qos_cfg(int level, bool enable) struct rdt_domain *d; int cpu; + /* Walking r->domains, ensure it can't race with cpuhp */ + lockdep_assert_cpus_held(); + if (level == RDT_RESOURCE_L3) update = l3_qos_cfg_update; else if (level == RDT_RESOURCE_L2) @@ -2417,6 +2465,7 @@ struct rdtgroup *rdtgroup_kn_lock_live(struct kernfs_node *kn) rdtgroup_kn_get(rdtgrp, kn); + cpus_read_lock(); mutex_lock(&rdtgroup_mutex); /* Was this group deleted while we waited? */ @@ -2434,6 +2483,8 @@ void rdtgroup_kn_unlock(struct kernfs_node *kn) return; mutex_unlock(&rdtgroup_mutex); + cpus_read_unlock(); + rdtgroup_kn_put(rdtgrp, kn); } @@ -2584,7 +2635,7 @@ static int rdt_get_tree(struct fs_context *fc) /* * resctrl file system can only be mounted once. */ - if (static_branch_unlikely(&rdt_enable_key)) { + if (resctrl_mounted) { ret = -EBUSY; goto out; } @@ -2605,7 +2656,7 @@ static int rdt_get_tree(struct fs_context *fc) closid_init(); - if (rdt_mon_capable) + if (resctrl_arch_mon_capable()) flags |= RFTYPE_MON; ret = rdtgroup_add_files(rdtgroup_default.kn, flags); @@ -2618,7 +2669,7 @@ static int rdt_get_tree(struct fs_context *fc) if (ret < 0) goto out_schemata_free; - if (rdt_mon_capable) { + if (resctrl_arch_mon_capable()) { ret = mongroup_create_dir(rdtgroup_default.kn, &rdtgroup_default, "mon_groups", &kn_mongrp); @@ -2640,18 +2691,19 @@ static int rdt_get_tree(struct fs_context *fc) if (ret < 0) goto out_psl; - if (rdt_alloc_capable) - static_branch_enable_cpuslocked(&rdt_alloc_enable_key); - if (rdt_mon_capable) - static_branch_enable_cpuslocked(&rdt_mon_enable_key); + if (resctrl_arch_alloc_capable()) + resctrl_arch_enable_alloc(); + if (resctrl_arch_mon_capable()) + resctrl_arch_enable_mon(); - if (rdt_alloc_capable || rdt_mon_capable) - static_branch_enable_cpuslocked(&rdt_enable_key); + if (resctrl_arch_alloc_capable() || resctrl_arch_mon_capable()) + resctrl_mounted = true; if (is_mbm_enabled()) { r = &rdt_resources_all[RDT_RESOURCE_L3].r_resctrl; list_for_each_entry(dom, &r->domains, list) - mbm_setup_overflow_handler(dom, MBM_OVERFLOW_INTERVAL); + mbm_setup_overflow_handler(dom, MBM_OVERFLOW_INTERVAL, + RESCTRL_PICK_ANY_CPU); } goto out; @@ -2659,10 +2711,10 @@ static int rdt_get_tree(struct fs_context *fc) out_psl: rdt_pseudo_lock_release(); out_mondata: - if (rdt_mon_capable) + if (resctrl_arch_mon_capable()) kernfs_remove(kn_mondata); out_mongrp: - if (rdt_mon_capable) + if (resctrl_arch_mon_capable()) kernfs_remove(kn_mongrp); out_info: kernfs_remove(kn_info); @@ -2765,6 +2817,9 @@ static int reset_all_ctrls(struct rdt_resource *r) struct rdt_domain *d; int i; + /* Walking r->domains, ensure it can't race with cpuhp */ + lockdep_assert_cpus_held(); + if (!zalloc_cpumask_var(&cpu_mask, GFP_KERNEL)) return -ENOMEM; @@ -2810,8 +2865,8 @@ static void rdt_move_group_tasks(struct rdtgroup *from, struct rdtgroup *to, for_each_process_thread(p, t) { if (!from || is_closid_match(t, from) || is_rmid_match(t, from)) { - WRITE_ONCE(t->closid, to->closid); - WRITE_ONCE(t->rmid, to->mon.rmid); + resctrl_arch_set_closid_rmid(t, to->closid, + to->mon.rmid); /* * Order the closid/rmid stores above before the loads @@ -2842,7 +2897,7 @@ static void free_all_child_rdtgrp(struct rdtgroup *rdtgrp) head = &rdtgrp->mon.crdtgrp_list; list_for_each_entry_safe(sentry, stmp, head, mon.crdtgrp_list) { - free_rmid(sentry->mon.rmid); + free_rmid(sentry->closid, sentry->mon.rmid); list_del(&sentry->mon.crdtgrp_list); if (atomic_read(&sentry->waitcount) != 0) @@ -2882,7 +2937,7 @@ static void rmdir_all_sub(void) cpumask_or(&rdtgroup_default.cpu_mask, &rdtgroup_default.cpu_mask, &rdtgrp->cpu_mask); - free_rmid(rdtgrp->mon.rmid); + free_rmid(rdtgrp->closid, rdtgrp->mon.rmid); kernfs_remove(rdtgrp->kn); list_del(&rdtgrp->rdtgroup_list); @@ -2917,9 +2972,11 @@ static void rdt_kill_sb(struct super_block *sb) rdtgroup_default.mode = RDT_MODE_SHAREABLE; schemata_list_destroy(); rdtgroup_destroy_root(); - static_branch_disable_cpuslocked(&rdt_alloc_enable_key); - static_branch_disable_cpuslocked(&rdt_mon_enable_key); - static_branch_disable_cpuslocked(&rdt_enable_key); + if (resctrl_arch_alloc_capable()) + resctrl_arch_disable_alloc(); + if (resctrl_arch_mon_capable()) + resctrl_arch_disable_mon(); + resctrl_mounted = false; kernfs_kill_sb(sb); mutex_unlock(&rdtgroup_mutex); cpus_read_unlock(); @@ -3047,6 +3104,9 @@ static int mkdir_mondata_subdir_alldom(struct kernfs_node *parent_kn, struct rdt_domain *dom; int ret; + /* Walking r->domains, ensure it can't race with cpuhp */ + lockdep_assert_cpus_held(); + list_for_each_entry(dom, &r->domains, list) { ret = mkdir_mondata_subdir(parent_kn, dom, r, prgrp); if (ret) @@ -3293,6 +3353,36 @@ out: return ret; } +static int mkdir_rdt_prepare_rmid_alloc(struct rdtgroup *rdtgrp) +{ + int ret; + + if (!resctrl_arch_mon_capable()) + return 0; + + ret = alloc_rmid(rdtgrp->closid); + if (ret < 0) { + rdt_last_cmd_puts("Out of RMIDs\n"); + return ret; + } + rdtgrp->mon.rmid = ret; + + ret = mkdir_mondata_all(rdtgrp->kn, rdtgrp, &rdtgrp->mon.mon_data_kn); + if (ret) { + rdt_last_cmd_puts("kernfs subdir error\n"); + free_rmid(rdtgrp->closid, rdtgrp->mon.rmid); + return ret; + } + + return 0; +} + +static void mkdir_rdt_prepare_rmid_free(struct rdtgroup *rgrp) +{ + if (resctrl_arch_mon_capable()) + free_rmid(rgrp->closid, rgrp->mon.rmid); +} + static int mkdir_rdt_prepare(struct kernfs_node *parent_kn, const char *name, umode_t mode, enum rdt_group_type rtype, struct rdtgroup **r) @@ -3353,7 +3443,7 @@ static int mkdir_rdt_prepare(struct kernfs_node *parent_kn, if (rtype == RDTCTRL_GROUP) { files = RFTYPE_BASE | RFTYPE_CTRL; - if (rdt_mon_capable) + if (resctrl_arch_mon_capable()) files |= RFTYPE_MON; } else { files = RFTYPE_BASE | RFTYPE_MON; @@ -3365,29 +3455,11 @@ static int mkdir_rdt_prepare(struct kernfs_node *parent_kn, goto out_destroy; } - if (rdt_mon_capable) { - ret = alloc_rmid(); - if (ret < 0) { - rdt_last_cmd_puts("Out of RMIDs\n"); - goto out_destroy; - } - rdtgrp->mon.rmid = ret; - - ret = mkdir_mondata_all(kn, rdtgrp, &rdtgrp->mon.mon_data_kn); - if (ret) { - rdt_last_cmd_puts("kernfs subdir error\n"); - goto out_idfree; - } - } - kernfs_activate(kn); - /* * The caller unlocks the parent_kn upon success. */ return 0; -out_idfree: - free_rmid(rdtgrp->mon.rmid); out_destroy: kernfs_put(rdtgrp->kn); kernfs_remove(rdtgrp->kn); @@ -3401,7 +3473,6 @@ out_unlock: static void mkdir_rdt_prepare_clean(struct rdtgroup *rgrp) { kernfs_remove(rgrp->kn); - free_rmid(rgrp->mon.rmid); rdtgroup_remove(rgrp); } @@ -3423,12 +3494,21 @@ static int rdtgroup_mkdir_mon(struct kernfs_node *parent_kn, prgrp = rdtgrp->mon.parent; rdtgrp->closid = prgrp->closid; + ret = mkdir_rdt_prepare_rmid_alloc(rdtgrp); + if (ret) { + mkdir_rdt_prepare_clean(rdtgrp); + goto out_unlock; + } + + kernfs_activate(rdtgrp->kn); + /* * Add the rdtgrp to the list of rdtgrps the parent * ctrl_mon group has to track. */ list_add_tail(&rdtgrp->mon.crdtgrp_list, &prgrp->mon.crdtgrp_list); +out_unlock: rdtgroup_kn_unlock(parent_kn); return ret; } @@ -3459,13 +3539,20 @@ static int rdtgroup_mkdir_ctrl_mon(struct kernfs_node *parent_kn, ret = 0; rdtgrp->closid = closid; + + ret = mkdir_rdt_prepare_rmid_alloc(rdtgrp); + if (ret) + goto out_closid_free; + + kernfs_activate(rdtgrp->kn); + ret = rdtgroup_init_alloc(rdtgrp); if (ret < 0) - goto out_id_free; + goto out_rmid_free; list_add(&rdtgrp->rdtgroup_list, &rdt_all_groups); - if (rdt_mon_capable) { + if (resctrl_arch_mon_capable()) { /* * Create an empty mon_groups directory to hold the subset * of tasks and cpus to monitor. @@ -3481,7 +3568,9 @@ static int rdtgroup_mkdir_ctrl_mon(struct kernfs_node *parent_kn, out_del_list: list_del(&rdtgrp->rdtgroup_list); -out_id_free: +out_rmid_free: + mkdir_rdt_prepare_rmid_free(rdtgrp); +out_closid_free: closid_free(closid); out_common_fail: mkdir_rdt_prepare_clean(rdtgrp); @@ -3518,14 +3607,14 @@ static int rdtgroup_mkdir(struct kernfs_node *parent_kn, const char *name, * allocation is supported, add a control and monitoring * subdirectory */ - if (rdt_alloc_capable && parent_kn == rdtgroup_default.kn) + if (resctrl_arch_alloc_capable() && parent_kn == rdtgroup_default.kn) return rdtgroup_mkdir_ctrl_mon(parent_kn, name, mode); /* * If RDT monitoring is supported and the parent directory is a valid * "mon_groups" directory, add a monitoring subdirectory. */ - if (rdt_mon_capable && is_mon_groups(parent_kn, name)) + if (resctrl_arch_mon_capable() && is_mon_groups(parent_kn, name)) return rdtgroup_mkdir_mon(parent_kn, name, mode); return -EPERM; @@ -3550,7 +3639,7 @@ static int rdtgroup_rmdir_mon(struct rdtgroup *rdtgrp, cpumask_var_t tmpmask) update_closid_rmid(tmpmask, NULL); rdtgrp->flags = RDT_DELETED; - free_rmid(rdtgrp->mon.rmid); + free_rmid(rdtgrp->closid, rdtgrp->mon.rmid); /* * Remove the rdtgrp from the parent ctrl_mon group's list @@ -3596,8 +3685,8 @@ static int rdtgroup_rmdir_ctrl(struct rdtgroup *rdtgrp, cpumask_var_t tmpmask) cpumask_or(tmpmask, tmpmask, &rdtgrp->cpu_mask); update_closid_rmid(tmpmask, NULL); + free_rmid(rdtgrp->closid, rdtgrp->mon.rmid); closid_free(rdtgrp->closid); - free_rmid(rdtgrp->mon.rmid); rdtgroup_ctrl_remove(rdtgrp); @@ -3829,8 +3918,8 @@ static void __init rdtgroup_setup_default(void) { mutex_lock(&rdtgroup_mutex); - rdtgroup_default.closid = 0; - rdtgroup_default.mon.rmid = 0; + rdtgroup_default.closid = RESCTRL_RESERVED_CLOSID; + rdtgroup_default.mon.rmid = RESCTRL_RESERVED_RMID; rdtgroup_default.type = RDTCTRL_GROUP; INIT_LIST_HEAD(&rdtgroup_default.mon.crdtgrp_list); @@ -3848,24 +3937,24 @@ static void domain_destroy_mon_state(struct rdt_domain *d) void resctrl_offline_domain(struct rdt_resource *r, struct rdt_domain *d) { - lockdep_assert_held(&rdtgroup_mutex); + mutex_lock(&rdtgroup_mutex); if (supports_mba_mbps() && r->rid == RDT_RESOURCE_MBA) mba_sc_domain_destroy(r, d); if (!r->mon_capable) - return; + goto out_unlock; /* * If resctrl is mounted, remove all the * per domain monitor data directories. */ - if (static_branch_unlikely(&rdt_mon_enable_key)) + if (resctrl_mounted && resctrl_arch_mon_capable()) rmdir_mondata_subdir_allrdtgrp(r, d->id); if (is_mbm_enabled()) cancel_delayed_work(&d->mbm_over); - if (is_llc_occupancy_enabled() && has_busy_rmid(r, d)) { + if (is_llc_occupancy_enabled() && has_busy_rmid(d)) { /* * When a package is going down, forcefully * decrement rmid->ebusy. There is no way to know @@ -3879,20 +3968,24 @@ void resctrl_offline_domain(struct rdt_resource *r, struct rdt_domain *d) } domain_destroy_mon_state(d); + +out_unlock: + mutex_unlock(&rdtgroup_mutex); } static int domain_setup_mon_state(struct rdt_resource *r, struct rdt_domain *d) { + u32 idx_limit = resctrl_arch_system_num_rmid_idx(); size_t tsize; if (is_llc_occupancy_enabled()) { - d->rmid_busy_llc = bitmap_zalloc(r->num_rmid, GFP_KERNEL); + d->rmid_busy_llc = bitmap_zalloc(idx_limit, GFP_KERNEL); if (!d->rmid_busy_llc) return -ENOMEM; } if (is_mbm_total_enabled()) { tsize = sizeof(*d->mbm_total); - d->mbm_total = kcalloc(r->num_rmid, tsize, GFP_KERNEL); + d->mbm_total = kcalloc(idx_limit, tsize, GFP_KERNEL); if (!d->mbm_total) { bitmap_free(d->rmid_busy_llc); return -ENOMEM; @@ -3900,7 +3993,7 @@ static int domain_setup_mon_state(struct rdt_resource *r, struct rdt_domain *d) } if (is_mbm_local_enabled()) { tsize = sizeof(*d->mbm_local); - d->mbm_local = kcalloc(r->num_rmid, tsize, GFP_KERNEL); + d->mbm_local = kcalloc(idx_limit, tsize, GFP_KERNEL); if (!d->mbm_local) { bitmap_free(d->rmid_busy_llc); kfree(d->mbm_total); @@ -3913,34 +4006,97 @@ static int domain_setup_mon_state(struct rdt_resource *r, struct rdt_domain *d) int resctrl_online_domain(struct rdt_resource *r, struct rdt_domain *d) { - int err; + int err = 0; - lockdep_assert_held(&rdtgroup_mutex); + mutex_lock(&rdtgroup_mutex); - if (supports_mba_mbps() && r->rid == RDT_RESOURCE_MBA) + if (supports_mba_mbps() && r->rid == RDT_RESOURCE_MBA) { /* RDT_RESOURCE_MBA is never mon_capable */ - return mba_sc_domain_allocate(r, d); + err = mba_sc_domain_allocate(r, d); + goto out_unlock; + } if (!r->mon_capable) - return 0; + goto out_unlock; err = domain_setup_mon_state(r, d); if (err) - return err; + goto out_unlock; if (is_mbm_enabled()) { INIT_DELAYED_WORK(&d->mbm_over, mbm_handle_overflow); - mbm_setup_overflow_handler(d, MBM_OVERFLOW_INTERVAL); + mbm_setup_overflow_handler(d, MBM_OVERFLOW_INTERVAL, + RESCTRL_PICK_ANY_CPU); } if (is_llc_occupancy_enabled()) INIT_DELAYED_WORK(&d->cqm_limbo, cqm_handle_limbo); - /* If resctrl is mounted, add per domain monitor data directories. */ - if (static_branch_unlikely(&rdt_mon_enable_key)) + /* + * If the filesystem is not mounted then only the default resource group + * exists. Creation of its directories is deferred until mount time + * by rdt_get_tree() calling mkdir_mondata_all(). + * If resctrl is mounted, add per domain monitor data directories. + */ + if (resctrl_mounted && resctrl_arch_mon_capable()) mkdir_mondata_subdir_allrdtgrp(r, d); - return 0; +out_unlock: + mutex_unlock(&rdtgroup_mutex); + + return err; +} + +void resctrl_online_cpu(unsigned int cpu) +{ + mutex_lock(&rdtgroup_mutex); + /* The CPU is set in default rdtgroup after online. */ + cpumask_set_cpu(cpu, &rdtgroup_default.cpu_mask); + mutex_unlock(&rdtgroup_mutex); +} + +static void clear_childcpus(struct rdtgroup *r, unsigned int cpu) +{ + struct rdtgroup *cr; + + list_for_each_entry(cr, &r->mon.crdtgrp_list, mon.crdtgrp_list) { + if (cpumask_test_and_clear_cpu(cpu, &cr->cpu_mask)) + break; + } +} + +void resctrl_offline_cpu(unsigned int cpu) +{ + struct rdt_resource *l3 = &rdt_resources_all[RDT_RESOURCE_L3].r_resctrl; + struct rdtgroup *rdtgrp; + struct rdt_domain *d; + + mutex_lock(&rdtgroup_mutex); + list_for_each_entry(rdtgrp, &rdt_all_groups, rdtgroup_list) { + if (cpumask_test_and_clear_cpu(cpu, &rdtgrp->cpu_mask)) { + clear_childcpus(rdtgrp, cpu); + break; + } + } + + if (!l3->mon_capable) + goto out_unlock; + + d = get_domain_from_cpu(cpu, l3); + if (d) { + if (is_mbm_enabled() && cpu == d->mbm_work_cpu) { + cancel_delayed_work(&d->mbm_over); + mbm_setup_overflow_handler(d, 0, cpu); + } + if (is_llc_occupancy_enabled() && cpu == d->cqm_work_cpu && + has_busy_rmid(d)) { + cancel_delayed_work(&d->cqm_limbo); + cqm_setup_limbo_handler(d, 0, cpu); + } + } + +out_unlock: + mutex_unlock(&rdtgroup_mutex); } /* diff --git a/arch/x86/kernel/cpu/topology.c b/arch/x86/kernel/cpu/topology.c index dc136703566f..3259b1d4fefe 100644 --- a/arch/x86/kernel/cpu/topology.c +++ b/arch/x86/kernel/cpu/topology.c @@ -1,167 +1,510 @@ -// SPDX-License-Identifier: GPL-2.0 +// SPDX-License-Identifier: GPL-2.0-only /* - * Check for extended topology enumeration cpuid leaf 0xb and if it - * exists, use it for populating initial_apicid and cpu topology - * detection. + * CPU/APIC topology + * + * The APIC IDs describe the system topology in multiple domain levels. + * The CPUID topology parser provides the information which part of the + * APIC ID is associated to the individual levels: + * + * [PACKAGE][DIEGRP][DIE][TILE][MODULE][CORE][THREAD] + * + * The root space contains the package (socket) IDs. + * + * Not enumerated levels consume 0 bits space, but conceptually they are + * always represented. If e.g. only CORE and THREAD levels are enumerated + * then the DIE, MODULE and TILE have the same physical ID as the PACKAGE. + * + * If SMT is not supported, then the THREAD domain is still used. It then + * has the same physical ID as the CORE domain and is the only child of + * the core domain. + * + * This allows a unified view on the system independent of the enumerated + * domain levels without requiring any conditionals in the code. */ - +#define pr_fmt(fmt) "CPU topo: " fmt #include <linux/cpu.h> + +#include <xen/xen.h> + #include <asm/apic.h> -#include <asm/memtype.h> -#include <asm/processor.h> +#include <asm/hypervisor.h> +#include <asm/io_apic.h> +#include <asm/mpspec.h> +#include <asm/smp.h> #include "cpu.h" -/* leaf 0xb SMT level */ -#define SMT_LEVEL 0 +/* + * Map cpu index to physical APIC ID + */ +DEFINE_EARLY_PER_CPU_READ_MOSTLY(u32, x86_cpu_to_apicid, BAD_APICID); +DEFINE_EARLY_PER_CPU_READ_MOSTLY(u32, x86_cpu_to_acpiid, CPU_ACPIID_INVALID); +EXPORT_EARLY_PER_CPU_SYMBOL(x86_cpu_to_apicid); +EXPORT_EARLY_PER_CPU_SYMBOL(x86_cpu_to_acpiid); -/* extended topology sub-leaf types */ -#define INVALID_TYPE 0 -#define SMT_TYPE 1 -#define CORE_TYPE 2 -#define DIE_TYPE 5 +/* Bitmap of physically present CPUs. */ +DECLARE_BITMAP(phys_cpu_present_map, MAX_LOCAL_APIC) __read_mostly; -#define LEAFB_SUBTYPE(ecx) (((ecx) >> 8) & 0xff) -#define BITS_SHIFT_NEXT_LEVEL(eax) ((eax) & 0x1f) -#define LEVEL_MAX_SIBLINGS(ebx) ((ebx) & 0xffff) +/* Used for CPU number allocation and parallel CPU bringup */ +u32 cpuid_to_apicid[] __ro_after_init = { [0 ... NR_CPUS - 1] = BAD_APICID, }; + +/* Bitmaps to mark registered APICs at each topology domain */ +static struct { DECLARE_BITMAP(map, MAX_LOCAL_APIC); } apic_maps[TOPO_MAX_DOMAIN] __ro_after_init; + +/* + * Keep track of assigned, disabled and rejected CPUs. Present assigned + * with 1 as CPU #0 is reserved for the boot CPU. + */ +static struct { + unsigned int nr_assigned_cpus; + unsigned int nr_disabled_cpus; + unsigned int nr_rejected_cpus; + u32 boot_cpu_apic_id; + u32 real_bsp_apic_id; +} topo_info __ro_after_init = { + .nr_assigned_cpus = 1, + .boot_cpu_apic_id = BAD_APICID, + .real_bsp_apic_id = BAD_APICID, +}; -unsigned int __max_die_per_package __read_mostly = 1; -EXPORT_SYMBOL(__max_die_per_package); +#define domain_weight(_dom) bitmap_weight(apic_maps[_dom].map, MAX_LOCAL_APIC) + +bool arch_match_cpu_phys_id(int cpu, u64 phys_id) +{ + return phys_id == (u64)cpuid_to_apicid[cpu]; +} #ifdef CONFIG_SMP +static void cpu_mark_primary_thread(unsigned int cpu, unsigned int apicid) +{ + if (!(apicid & (__max_threads_per_core - 1))) + cpumask_set_cpu(cpu, &__cpu_primary_thread_mask); +} +#else +static inline void cpu_mark_primary_thread(unsigned int cpu, unsigned int apicid) { } +#endif + /* - * Check if given CPUID extended topology "leaf" is implemented + * Convert the APIC ID to a domain level ID by masking out the low bits + * below the domain level @dom. */ -static int check_extended_topology_leaf(int leaf) +static inline u32 topo_apicid(u32 apicid, enum x86_topology_domains dom) +{ + if (dom == TOPO_SMT_DOMAIN) + return apicid; + return apicid & (UINT_MAX << x86_topo_system.dom_shifts[dom - 1]); +} + +static int topo_lookup_cpuid(u32 apic_id) { - unsigned int eax, ebx, ecx, edx; + int i; - cpuid_count(leaf, SMT_LEVEL, &eax, &ebx, &ecx, &edx); + /* CPU# to APICID mapping is persistent once it is established */ + for (i = 0; i < topo_info.nr_assigned_cpus; i++) { + if (cpuid_to_apicid[i] == apic_id) + return i; + } + return -ENODEV; +} - if (ebx == 0 || (LEAFB_SUBTYPE(ecx) != SMT_TYPE)) - return -1; +static __init int topo_get_cpunr(u32 apic_id) +{ + int cpu = topo_lookup_cpuid(apic_id); - return 0; + if (cpu >= 0) + return cpu; + + return topo_info.nr_assigned_cpus++; } -/* - * Return best CPUID Extended Topology Leaf supported + +static void topo_set_cpuids(unsigned int cpu, u32 apic_id, u32 acpi_id) +{ +#if defined(CONFIG_SMP) || defined(CONFIG_X86_64) + early_per_cpu(x86_cpu_to_apicid, cpu) = apic_id; + early_per_cpu(x86_cpu_to_acpiid, cpu) = acpi_id; +#endif + set_cpu_possible(cpu, true); + set_cpu_present(cpu, true); +} + +static __init bool check_for_real_bsp(u32 apic_id) +{ + /* + * There is no real good way to detect whether this a kdump() + * kernel, but except on the Voyager SMP monstrosity which is not + * longer supported, the real BSP APIC ID is the first one which is + * enumerated by firmware. That allows to detect whether the boot + * CPU is the real BSP. If it is not, then do not register the APIC + * because sending INIT to the real BSP would reset the whole + * system. + * + * The first APIC ID which is enumerated by firmware is detectable + * because the boot CPU APIC ID is registered before that without + * invoking this code. + */ + if (topo_info.real_bsp_apic_id != BAD_APICID) + return false; + + if (apic_id == topo_info.boot_cpu_apic_id) { + topo_info.real_bsp_apic_id = apic_id; + return false; + } + + pr_warn("Boot CPU APIC ID not the first enumerated APIC ID: %x > %x\n", + topo_info.boot_cpu_apic_id, apic_id); + pr_warn("Crash kernel detected. Disabling real BSP to prevent machine INIT\n"); + + topo_info.real_bsp_apic_id = apic_id; + return true; +} + +static unsigned int topo_unit_count(u32 lvlid, enum x86_topology_domains at_level, + unsigned long *map) +{ + unsigned int id, end, cnt = 0; + + /* Calculate the exclusive end */ + end = lvlid + (1U << x86_topo_system.dom_shifts[at_level]); + + /* Unfortunately there is no bitmap_weight_range() */ + for (id = find_next_bit(map, end, lvlid); id < end; id = find_next_bit(map, end, ++id)) + cnt++; + return cnt; +} + +static __init void topo_register_apic(u32 apic_id, u32 acpi_id, bool present) +{ + int cpu, dom; + + if (present) { + set_bit(apic_id, phys_cpu_present_map); + + /* + * Double registration is valid in case of the boot CPU + * APIC because that is registered before the enumeration + * of the APICs via firmware parsers or VM guest + * mechanisms. + */ + if (apic_id == topo_info.boot_cpu_apic_id) + cpu = 0; + else + cpu = topo_get_cpunr(apic_id); + + cpuid_to_apicid[cpu] = apic_id; + topo_set_cpuids(cpu, apic_id, acpi_id); + } else { + u32 pkgid = topo_apicid(apic_id, TOPO_PKG_DOMAIN); + + /* + * Check for present APICs in the same package when running + * on bare metal. Allow the bogosity in a guest. + */ + if (hypervisor_is_type(X86_HYPER_NATIVE) && + topo_unit_count(pkgid, TOPO_PKG_DOMAIN, phys_cpu_present_map)) { + pr_info_once("Ignoring hot-pluggable APIC ID %x in present package.\n", + apic_id); + topo_info.nr_rejected_cpus++; + return; + } + + topo_info.nr_disabled_cpus++; + } + + /* Register present and possible CPUs in the domain maps */ + for (dom = TOPO_SMT_DOMAIN; dom < TOPO_MAX_DOMAIN; dom++) + set_bit(topo_apicid(apic_id, dom), apic_maps[dom].map); +} + +/** + * topology_register_apic - Register an APIC in early topology maps + * @apic_id: The APIC ID to set up + * @acpi_id: The ACPI ID associated to the APIC + * @present: True if the corresponding CPU is present */ -static int detect_extended_topology_leaf(struct cpuinfo_x86 *c) +void __init topology_register_apic(u32 apic_id, u32 acpi_id, bool present) { - if (c->cpuid_level >= 0x1f) { - if (check_extended_topology_leaf(0x1f) == 0) - return 0x1f; + if (apic_id >= MAX_LOCAL_APIC) { + pr_err_once("APIC ID %x exceeds kernel limit of: %x\n", apic_id, MAX_LOCAL_APIC - 1); + topo_info.nr_rejected_cpus++; + return; + } + + if (check_for_real_bsp(apic_id)) { + topo_info.nr_rejected_cpus++; + return; } - if (c->cpuid_level >= 0xb) { - if (check_extended_topology_leaf(0xb) == 0) - return 0xb; + /* CPU numbers exhausted? */ + if (apic_id != topo_info.boot_cpu_apic_id && topo_info.nr_assigned_cpus >= nr_cpu_ids) { + pr_warn_once("CPU limit of %d reached. Ignoring further CPUs\n", nr_cpu_ids); + topo_info.nr_rejected_cpus++; + return; } - return -1; + topo_register_apic(apic_id, acpi_id, present); +} + +/** + * topology_register_boot_apic - Register the boot CPU APIC + * @apic_id: The APIC ID to set up + * + * Separate so CPU #0 can be assigned + */ +void __init topology_register_boot_apic(u32 apic_id) +{ + WARN_ON_ONCE(topo_info.boot_cpu_apic_id != BAD_APICID); + + topo_info.boot_cpu_apic_id = apic_id; + topo_register_apic(apic_id, CPU_ACPIID_INVALID, true); +} + +/** + * topology_get_logical_id - Retrieve the logical ID at a given topology domain level + * @apicid: The APIC ID for which to lookup the logical ID + * @at_level: The topology domain level to use + * + * @apicid must be a full APIC ID, not the normalized variant. It's valid to have + * all bits below the domain level specified by @at_level to be clear. So both + * real APIC IDs and backshifted normalized APIC IDs work correctly. + * + * Returns: + * - >= 0: The requested logical ID + * - -ERANGE: @apicid is out of range + * - -ENODEV: @apicid is not registered + */ +int topology_get_logical_id(u32 apicid, enum x86_topology_domains at_level) +{ + /* Remove the bits below @at_level to get the proper level ID of @apicid */ + unsigned int lvlid = topo_apicid(apicid, at_level); + + if (lvlid >= MAX_LOCAL_APIC) + return -ERANGE; + if (!test_bit(lvlid, apic_maps[at_level].map)) + return -ENODEV; + /* Get the number of set bits before @lvlid. */ + return bitmap_weight(apic_maps[at_level].map, lvlid); +} +EXPORT_SYMBOL_GPL(topology_get_logical_id); + +/** + * topology_unit_count - Retrieve the count of specified units at a given topology domain level + * @apicid: The APIC ID which specifies the search range + * @which_units: The domain level specifying the units to count + * @at_level: The domain level at which @which_units have to be counted + * + * This returns the number of possible units according to the enumerated + * information. + * + * E.g. topology_count_units(apicid, TOPO_CORE_DOMAIN, TOPO_PKG_DOMAIN) + * counts the number of possible cores in the package to which @apicid + * belongs. + * + * @at_level must obviously be greater than @which_level to produce useful + * results. If @at_level is equal to @which_units the result is + * unsurprisingly 1. If @at_level is less than @which_units the results + * is by definition undefined and the function returns 0. + */ +unsigned int topology_unit_count(u32 apicid, enum x86_topology_domains which_units, + enum x86_topology_domains at_level) +{ + /* Remove the bits below @at_level to get the proper level ID of @apicid */ + unsigned int lvlid = topo_apicid(apicid, at_level); + + if (lvlid >= MAX_LOCAL_APIC) + return 0; + if (!test_bit(lvlid, apic_maps[at_level].map)) + return 0; + if (which_units > at_level) + return 0; + if (which_units == at_level) + return 1; + return topo_unit_count(lvlid, at_level, apic_maps[which_units].map); +} + +#ifdef CONFIG_ACPI_HOTPLUG_CPU +/** + * topology_hotplug_apic - Handle a physical hotplugged APIC after boot + * @apic_id: The APIC ID to set up + * @acpi_id: The ACPI ID associated to the APIC + */ +int topology_hotplug_apic(u32 apic_id, u32 acpi_id) +{ + int cpu; + + if (apic_id >= MAX_LOCAL_APIC) + return -EINVAL; + + /* Reject if the APIC ID was not registered during enumeration. */ + if (!test_bit(apic_id, apic_maps[TOPO_SMT_DOMAIN].map)) + return -ENODEV; + + cpu = topo_lookup_cpuid(apic_id); + if (cpu < 0) + return -ENOSPC; + + set_bit(apic_id, phys_cpu_present_map); + topo_set_cpuids(cpu, apic_id, acpi_id); + cpu_mark_primary_thread(cpu, apic_id); + return cpu; +} + +/** + * topology_hotunplug_apic - Remove a physical hotplugged APIC after boot + * @cpu: The CPU number for which the APIC ID is removed + */ +void topology_hotunplug_apic(unsigned int cpu) +{ + u32 apic_id = cpuid_to_apicid[cpu]; + + if (apic_id == BAD_APICID) + return; + + per_cpu(x86_cpu_to_apicid, cpu) = BAD_APICID; + clear_bit(apic_id, phys_cpu_present_map); + set_cpu_present(cpu, false); } #endif -int detect_extended_topology_early(struct cpuinfo_x86 *c) +#ifdef CONFIG_X86_LOCAL_APIC +static unsigned int max_possible_cpus __initdata = NR_CPUS; + +/** + * topology_apply_cmdline_limits_early - Apply topology command line limits early + * + * Ensure that command line limits are in effect before firmware parsing + * takes place. + */ +void __init topology_apply_cmdline_limits_early(void) { -#ifdef CONFIG_SMP - unsigned int eax, ebx, ecx, edx; - int leaf; + unsigned int possible = nr_cpu_ids; - leaf = detect_extended_topology_leaf(c); - if (leaf < 0) - return -1; + /* 'maxcpus=0' 'nosmp' 'nolapic' 'disableapic' 'noapic' */ + if (!setup_max_cpus || ioapic_is_disabled || apic_is_disabled) + possible = 1; - set_cpu_cap(c, X86_FEATURE_XTOPOLOGY); + /* 'possible_cpus=N' */ + possible = min_t(unsigned int, max_possible_cpus, possible); + + if (possible < nr_cpu_ids) { + pr_info("Limiting to %u possible CPUs\n", possible); + set_nr_cpu_ids(possible); + } +} - cpuid_count(leaf, SMT_LEVEL, &eax, &ebx, &ecx, &edx); +static __init bool restrict_to_up(void) +{ + if (!smp_found_config || ioapic_is_disabled) + return true; /* - * initial apic id, which also represents 32-bit extended x2apic id. + * XEN PV is special as it does not advertise the local APIC + * properly, but provides a fake topology for it so that the + * infrastructure works. So don't apply the restrictions vs. APIC + * here. */ - c->topo.initial_apicid = edx; - smp_num_siblings = max_t(int, smp_num_siblings, LEVEL_MAX_SIBLINGS(ebx)); -#endif - return 0; + if (xen_pv_domain()) + return false; + + return apic_is_disabled; } -/* - * Check for extended topology enumeration cpuid leaf, and if it - * exists, use it for populating initial_apicid and cpu topology - * detection. - */ -int detect_extended_topology(struct cpuinfo_x86 *c) +void __init topology_init_possible_cpus(void) { -#ifdef CONFIG_SMP - unsigned int eax, ebx, ecx, edx, sub_index; - unsigned int ht_mask_width, core_plus_mask_width, die_plus_mask_width; - unsigned int core_select_mask, core_level_siblings; - unsigned int die_select_mask, die_level_siblings; - unsigned int pkg_mask_width; - bool die_level_present = false; - int leaf; - - leaf = detect_extended_topology_leaf(c); - if (leaf < 0) - return -1; + unsigned int assigned = topo_info.nr_assigned_cpus; + unsigned int disabled = topo_info.nr_disabled_cpus; + unsigned int cnta, cntb, cpu, allowed = 1; + unsigned int total = assigned + disabled; + u32 apicid, firstid; + + if (!restrict_to_up()) { + if (WARN_ON_ONCE(assigned > nr_cpu_ids)) { + disabled += assigned - nr_cpu_ids; + assigned = nr_cpu_ids; + } + allowed = min_t(unsigned int, total, nr_cpu_ids); + } + + if (total > allowed) + pr_warn("%u possible CPUs exceed the limit of %u\n", total, allowed); + + assigned = min_t(unsigned int, allowed, assigned); + disabled = allowed - assigned; + topo_info.nr_assigned_cpus = assigned; + topo_info.nr_disabled_cpus = disabled; + + total_cpus = allowed; + set_nr_cpu_ids(allowed); + + cnta = domain_weight(TOPO_PKG_DOMAIN); + cntb = domain_weight(TOPO_DIE_DOMAIN); + __max_logical_packages = cnta; + __max_dies_per_package = 1U << (get_count_order(cntb) - get_count_order(cnta)); + + pr_info("Max. logical packages: %3u\n", cnta); + pr_info("Max. logical dies: %3u\n", cntb); + pr_info("Max. dies per package: %3u\n", __max_dies_per_package); + + cnta = domain_weight(TOPO_CORE_DOMAIN); + cntb = domain_weight(TOPO_SMT_DOMAIN); /* - * Populate HT related information from sub-leaf level 0. + * Can't use order delta here as order(cnta) can be equal + * order(cntb) even if cnta != cntb. */ - cpuid_count(leaf, SMT_LEVEL, &eax, &ebx, &ecx, &edx); - c->topo.initial_apicid = edx; - core_level_siblings = LEVEL_MAX_SIBLINGS(ebx); - smp_num_siblings = max_t(int, smp_num_siblings, LEVEL_MAX_SIBLINGS(ebx)); - core_plus_mask_width = ht_mask_width = BITS_SHIFT_NEXT_LEVEL(eax); - die_level_siblings = LEVEL_MAX_SIBLINGS(ebx); - pkg_mask_width = die_plus_mask_width = BITS_SHIFT_NEXT_LEVEL(eax); - - sub_index = 1; - while (true) { - cpuid_count(leaf, sub_index, &eax, &ebx, &ecx, &edx); + __max_threads_per_core = DIV_ROUND_UP(cntb, cnta); + pr_info("Max. threads per core: %3u\n", __max_threads_per_core); - /* - * Check for the Core type in the implemented sub leaves. - */ - if (LEAFB_SUBTYPE(ecx) == CORE_TYPE) { - core_level_siblings = LEVEL_MAX_SIBLINGS(ebx); - core_plus_mask_width = BITS_SHIFT_NEXT_LEVEL(eax); - die_level_siblings = core_level_siblings; - die_plus_mask_width = BITS_SHIFT_NEXT_LEVEL(eax); - } - if (LEAFB_SUBTYPE(ecx) == DIE_TYPE) { - die_level_present = true; - die_level_siblings = LEVEL_MAX_SIBLINGS(ebx); - die_plus_mask_width = BITS_SHIFT_NEXT_LEVEL(eax); - } + firstid = find_first_bit(apic_maps[TOPO_SMT_DOMAIN].map, MAX_LOCAL_APIC); + __num_cores_per_package = topology_unit_count(firstid, TOPO_CORE_DOMAIN, TOPO_PKG_DOMAIN); + pr_info("Num. cores per package: %3u\n", __num_cores_per_package); + __num_threads_per_package = topology_unit_count(firstid, TOPO_SMT_DOMAIN, TOPO_PKG_DOMAIN); + pr_info("Num. threads per package: %3u\n", __num_threads_per_package); - if (LEAFB_SUBTYPE(ecx) != INVALID_TYPE) - pkg_mask_width = BITS_SHIFT_NEXT_LEVEL(eax); - else - break; + pr_info("Allowing %u present CPUs plus %u hotplug CPUs\n", assigned, disabled); + if (topo_info.nr_rejected_cpus) + pr_info("Rejected CPUs %u\n", topo_info.nr_rejected_cpus); - sub_index++; + init_cpu_present(cpumask_of(0)); + init_cpu_possible(cpumask_of(0)); + + /* Assign CPU numbers to non-present CPUs */ + for (apicid = 0; disabled; disabled--, apicid++) { + apicid = find_next_andnot_bit(apic_maps[TOPO_SMT_DOMAIN].map, phys_cpu_present_map, + MAX_LOCAL_APIC, apicid); + if (apicid >= MAX_LOCAL_APIC) + break; + cpuid_to_apicid[topo_info.nr_assigned_cpus++] = apicid; } - core_select_mask = (~(-1 << pkg_mask_width)) >> ht_mask_width; - die_select_mask = (~(-1 << die_plus_mask_width)) >> - core_plus_mask_width; + for (cpu = 0; cpu < allowed; cpu++) { + apicid = cpuid_to_apicid[cpu]; - c->topo.core_id = apic->phys_pkg_id(c->topo.initial_apicid, - ht_mask_width) & core_select_mask; + set_cpu_possible(cpu, true); - if (die_level_present) { - c->topo.die_id = apic->phys_pkg_id(c->topo.initial_apicid, - core_plus_mask_width) & die_select_mask; + if (apicid == BAD_APICID) + continue; + + cpu_mark_primary_thread(cpu, apicid); + set_cpu_present(cpu, test_bit(apicid, phys_cpu_present_map)); } +} - c->topo.pkg_id = apic->phys_pkg_id(c->topo.initial_apicid, pkg_mask_width); - /* - * Reinit the apicid, now that we have extended initial_apicid. - */ - c->topo.apicid = apic->phys_pkg_id(c->topo.initial_apicid, 0); +/* + * Late SMP disable after sizing CPU masks when APIC/IOAPIC setup failed. + */ +void __init topology_reset_possible_cpus_up(void) +{ + init_cpu_present(cpumask_of(0)); + init_cpu_possible(cpumask_of(0)); - c->x86_max_cores = (core_level_siblings / smp_num_siblings); - __max_die_per_package = (die_level_siblings / core_level_siblings); -#endif + bitmap_zero(phys_cpu_present_map, MAX_LOCAL_APIC); + if (topo_info.boot_cpu_apic_id != BAD_APICID) + set_bit(topo_info.boot_cpu_apic_id, phys_cpu_present_map); +} + +static int __init setup_possible_cpus(char *str) +{ + get_option(&str, &max_possible_cpus); return 0; } +early_param("possible_cpus", setup_possible_cpus); +#endif diff --git a/arch/x86/kernel/cpu/topology.h b/arch/x86/kernel/cpu/topology.h new file mode 100644 index 000000000000..37326297f80c --- /dev/null +++ b/arch/x86/kernel/cpu/topology.h @@ -0,0 +1,67 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef ARCH_X86_TOPOLOGY_H +#define ARCH_X86_TOPOLOGY_H + +struct topo_scan { + struct cpuinfo_x86 *c; + unsigned int dom_shifts[TOPO_MAX_DOMAIN]; + unsigned int dom_ncpus[TOPO_MAX_DOMAIN]; + + /* Legacy CPUID[1]:EBX[23:16] number of logical processors */ + unsigned int ebx1_nproc_shift; + + /* AMD specific node ID which cannot be mapped into APIC space. */ + u16 amd_nodes_per_pkg; + u16 amd_node_id; +}; + +void cpu_init_topology(struct cpuinfo_x86 *c); +void cpu_parse_topology(struct cpuinfo_x86 *c); +void topology_set_dom(struct topo_scan *tscan, enum x86_topology_domains dom, + unsigned int shift, unsigned int ncpus); +bool cpu_parse_topology_ext(struct topo_scan *tscan); +void cpu_parse_topology_amd(struct topo_scan *tscan); +void cpu_topology_fixup_amd(struct topo_scan *tscan); + +static inline u32 topo_shift_apicid(u32 apicid, enum x86_topology_domains dom) +{ + if (dom == TOPO_SMT_DOMAIN) + return apicid; + return apicid >> x86_topo_system.dom_shifts[dom - 1]; +} + +static inline u32 topo_relative_domain_id(u32 apicid, enum x86_topology_domains dom) +{ + if (dom != TOPO_SMT_DOMAIN) + apicid >>= x86_topo_system.dom_shifts[dom - 1]; + return apicid & (x86_topo_system.dom_size[dom] - 1); +} + +static inline u32 topo_domain_mask(enum x86_topology_domains dom) +{ + return (1U << x86_topo_system.dom_shifts[dom]) - 1; +} + +/* + * Update a domain level after the fact without propagating. Used to fixup + * broken CPUID enumerations. + */ +static inline void topology_update_dom(struct topo_scan *tscan, enum x86_topology_domains dom, + unsigned int shift, unsigned int ncpus) +{ + tscan->dom_shifts[dom] = shift; + tscan->dom_ncpus[dom] = ncpus; +} + +#ifdef CONFIG_X86_LOCAL_APIC +unsigned int topology_unit_count(u32 apicid, enum x86_topology_domains which_units, + enum x86_topology_domains at_level); +#else +static inline unsigned int topology_unit_count(u32 apicid, enum x86_topology_domains which_units, + enum x86_topology_domains at_level) +{ + return 1; +} +#endif + +#endif /* ARCH_X86_TOPOLOGY_H */ diff --git a/arch/x86/kernel/cpu/topology_amd.c b/arch/x86/kernel/cpu/topology_amd.c new file mode 100644 index 000000000000..1a8b3ad493af --- /dev/null +++ b/arch/x86/kernel/cpu/topology_amd.c @@ -0,0 +1,183 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/cpu.h> + +#include <asm/apic.h> +#include <asm/memtype.h> +#include <asm/processor.h> + +#include "cpu.h" + +static bool parse_8000_0008(struct topo_scan *tscan) +{ + struct { + // ecx + u32 cpu_nthreads : 8, // Number of physical threads - 1 + : 4, // Reserved + apicid_coreid_len : 4, // Number of thread core ID bits (shift) in APIC ID + perf_tsc_len : 2, // Performance time-stamp counter size + : 14; // Reserved + } ecx; + unsigned int sft; + + if (tscan->c->extended_cpuid_level < 0x80000008) + return false; + + cpuid_leaf_reg(0x80000008, CPUID_ECX, &ecx); + + /* If the thread bits are 0, then get the shift value from ecx.cpu_nthreads */ + sft = ecx.apicid_coreid_len; + if (!sft) + sft = get_count_order(ecx.cpu_nthreads + 1); + + topology_set_dom(tscan, TOPO_SMT_DOMAIN, sft, ecx.cpu_nthreads + 1); + return true; +} + +static void store_node(struct topo_scan *tscan, unsigned int nr_nodes, u16 node_id) +{ + /* + * Starting with Fam 17h the DIE domain could probably be used to + * retrieve the node info on AMD/HYGON. Analysis of CPUID dumps + * suggests it's the topmost bit(s) of the CPU cores area, but + * that's guess work and neither enumerated nor documented. + * + * Up to Fam 16h this does not work at all and the legacy node ID + * has to be used. + */ + tscan->amd_nodes_per_pkg = nr_nodes; + tscan->amd_node_id = node_id; +} + +static bool parse_8000_001e(struct topo_scan *tscan, bool has_0xb) +{ + struct { + // eax + u32 ext_apic_id : 32; // Extended APIC ID + // ebx + u32 core_id : 8, // Unique per-socket logical core unit ID + core_nthreads : 8, // #Threads per core (zero-based) + : 16; // Reserved + // ecx + u32 node_id : 8, // Node (die) ID of invoking logical CPU + nnodes_per_socket : 3, // #nodes in invoking logical CPU's package/socket + : 21; // Reserved + // edx + u32 : 32; // Reserved + } leaf; + + if (!boot_cpu_has(X86_FEATURE_TOPOEXT)) + return false; + + cpuid_leaf(0x8000001e, &leaf); + + tscan->c->topo.initial_apicid = leaf.ext_apic_id; + + /* + * If leaf 0xb is available, then SMT shift is set already. If not + * take it from ecx.threads_per_core and use topo_update_dom() - + * topology_set_dom() would propagate and overwrite the already + * propagated CORE level. + */ + if (!has_0xb) { + unsigned int nthreads = leaf.core_nthreads + 1; + + topology_update_dom(tscan, TOPO_SMT_DOMAIN, get_count_order(nthreads), nthreads); + } + + store_node(tscan, leaf.nnodes_per_socket + 1, leaf.node_id); + + if (tscan->c->x86_vendor == X86_VENDOR_AMD) { + if (tscan->c->x86 == 0x15) + tscan->c->topo.cu_id = leaf.core_id; + + cacheinfo_amd_init_llc_id(tscan->c, leaf.node_id); + } else { + /* + * Package ID is ApicId[6..] on certain Hygon CPUs. See + * commit e0ceeae708ce for explanation. The topology info + * is screwed up: The package shift is always 6 and the + * node ID is bit [4:5]. + */ + if (!boot_cpu_has(X86_FEATURE_HYPERVISOR) && tscan->c->x86_model <= 0x3) { + topology_set_dom(tscan, TOPO_CORE_DOMAIN, 6, + tscan->dom_ncpus[TOPO_CORE_DOMAIN]); + } + cacheinfo_hygon_init_llc_id(tscan->c); + } + return true; +} + +static bool parse_fam10h_node_id(struct topo_scan *tscan) +{ + struct { + union { + u64 node_id : 3, + nodes_per_pkg : 3, + unused : 58; + u64 msr; + }; + } nid; + + if (!boot_cpu_has(X86_FEATURE_NODEID_MSR)) + return false; + + rdmsrl(MSR_FAM10H_NODE_ID, nid.msr); + store_node(tscan, nid.nodes_per_pkg + 1, nid.node_id); + tscan->c->topo.llc_id = nid.node_id; + return true; +} + +static void legacy_set_llc(struct topo_scan *tscan) +{ + unsigned int apicid = tscan->c->topo.initial_apicid; + + /* parse_8000_0008() set everything up except llc_id */ + tscan->c->topo.llc_id = apicid >> tscan->dom_shifts[TOPO_CORE_DOMAIN]; +} + +static void parse_topology_amd(struct topo_scan *tscan) +{ + bool has_0xb = false; + + /* + * If the extended topology leaf 0x8000_001e is available + * try to get SMT and CORE shift from leaf 0xb first, then + * try to get the CORE shift from leaf 0x8000_0008. + */ + if (cpu_feature_enabled(X86_FEATURE_TOPOEXT)) + has_0xb = cpu_parse_topology_ext(tscan); + + if (!has_0xb && !parse_8000_0008(tscan)) + return; + + /* Prefer leaf 0x8000001e if available */ + if (parse_8000_001e(tscan, has_0xb)) + return; + + /* Try the NODEID MSR */ + if (parse_fam10h_node_id(tscan)) + return; + + legacy_set_llc(tscan); +} + +void cpu_parse_topology_amd(struct topo_scan *tscan) +{ + tscan->amd_nodes_per_pkg = 1; + parse_topology_amd(tscan); + + if (tscan->amd_nodes_per_pkg > 1) + set_cpu_cap(tscan->c, X86_FEATURE_AMD_DCM); +} + +void cpu_topology_fixup_amd(struct topo_scan *tscan) +{ + struct cpuinfo_x86 *c = tscan->c; + + /* + * Adjust the core_id relative to the node when there is more than + * one node. + */ + if (tscan->c->x86 < 0x17 && tscan->amd_nodes_per_pkg > 1) + c->topo.core_id %= tscan->dom_ncpus[TOPO_CORE_DOMAIN] / tscan->amd_nodes_per_pkg; +} diff --git a/arch/x86/kernel/cpu/topology_common.c b/arch/x86/kernel/cpu/topology_common.c new file mode 100644 index 000000000000..a50ae8d63d1c --- /dev/null +++ b/arch/x86/kernel/cpu/topology_common.c @@ -0,0 +1,218 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/cpu.h> + +#include <xen/xen.h> + +#include <asm/apic.h> +#include <asm/processor.h> +#include <asm/smp.h> + +#include "cpu.h" + +struct x86_topology_system x86_topo_system __ro_after_init; +EXPORT_SYMBOL_GPL(x86_topo_system); + +unsigned int __amd_nodes_per_pkg __ro_after_init; +EXPORT_SYMBOL_GPL(__amd_nodes_per_pkg); + +void topology_set_dom(struct topo_scan *tscan, enum x86_topology_domains dom, + unsigned int shift, unsigned int ncpus) +{ + topology_update_dom(tscan, dom, shift, ncpus); + + /* Propagate to the upper levels */ + for (dom++; dom < TOPO_MAX_DOMAIN; dom++) { + tscan->dom_shifts[dom] = tscan->dom_shifts[dom - 1]; + tscan->dom_ncpus[dom] = tscan->dom_ncpus[dom - 1]; + } +} + +static unsigned int __maybe_unused parse_num_cores_legacy(struct cpuinfo_x86 *c) +{ + struct { + u32 cache_type : 5, + unused : 21, + ncores : 6; + } eax; + + if (c->cpuid_level < 4) + return 1; + + cpuid_subleaf_reg(4, 0, CPUID_EAX, &eax); + if (!eax.cache_type) + return 1; + + return eax.ncores + 1; +} + +static void parse_legacy(struct topo_scan *tscan) +{ + unsigned int cores, core_shift, smt_shift = 0; + struct cpuinfo_x86 *c = tscan->c; + + cores = parse_num_cores_legacy(c); + core_shift = get_count_order(cores); + + if (cpu_has(c, X86_FEATURE_HT)) { + if (!WARN_ON_ONCE(tscan->ebx1_nproc_shift < core_shift)) + smt_shift = tscan->ebx1_nproc_shift - core_shift; + /* + * The parser expects leaf 0xb/0x1f format, which means + * the number of logical processors at core level is + * counting threads. + */ + core_shift += smt_shift; + cores <<= smt_shift; + } + + topology_set_dom(tscan, TOPO_SMT_DOMAIN, smt_shift, 1U << smt_shift); + topology_set_dom(tscan, TOPO_CORE_DOMAIN, core_shift, cores); +} + +static bool fake_topology(struct topo_scan *tscan) +{ + /* + * Preset the CORE level shift for CPUID less systems and XEN_PV, + * which has useless CPUID information. + */ + topology_set_dom(tscan, TOPO_SMT_DOMAIN, 0, 1); + topology_set_dom(tscan, TOPO_CORE_DOMAIN, 0, 1); + + return tscan->c->cpuid_level < 1; +} + +static void parse_topology(struct topo_scan *tscan, bool early) +{ + const struct cpuinfo_topology topo_defaults = { + .cu_id = 0xff, + .llc_id = BAD_APICID, + .l2c_id = BAD_APICID, + }; + struct cpuinfo_x86 *c = tscan->c; + struct { + u32 unused0 : 16, + nproc : 8, + apicid : 8; + } ebx; + + c->topo = topo_defaults; + + if (fake_topology(tscan)) + return; + + /* Preset Initial APIC ID from CPUID leaf 1 */ + cpuid_leaf_reg(1, CPUID_EBX, &ebx); + c->topo.initial_apicid = ebx.apicid; + + /* + * The initial invocation from early_identify_cpu() happens before + * the APIC is mapped or X2APIC enabled. For establishing the + * topology, that's not required. Use the initial APIC ID. + */ + if (early) + c->topo.apicid = c->topo.initial_apicid; + else + c->topo.apicid = read_apic_id(); + + /* The above is sufficient for UP */ + if (!IS_ENABLED(CONFIG_SMP)) + return; + + tscan->ebx1_nproc_shift = get_count_order(ebx.nproc); + + switch (c->x86_vendor) { + case X86_VENDOR_AMD: + if (IS_ENABLED(CONFIG_CPU_SUP_AMD)) + cpu_parse_topology_amd(tscan); + break; + case X86_VENDOR_CENTAUR: + case X86_VENDOR_ZHAOXIN: + parse_legacy(tscan); + break; + case X86_VENDOR_INTEL: + if (!IS_ENABLED(CONFIG_CPU_SUP_INTEL) || !cpu_parse_topology_ext(tscan)) + parse_legacy(tscan); + break; + case X86_VENDOR_HYGON: + if (IS_ENABLED(CONFIG_CPU_SUP_HYGON)) + cpu_parse_topology_amd(tscan); + break; + } +} + +static void topo_set_ids(struct topo_scan *tscan) +{ + struct cpuinfo_x86 *c = tscan->c; + u32 apicid = c->topo.apicid; + + c->topo.pkg_id = topo_shift_apicid(apicid, TOPO_PKG_DOMAIN); + c->topo.die_id = topo_shift_apicid(apicid, TOPO_DIE_DOMAIN); + + c->topo.logical_pkg_id = topology_get_logical_id(apicid, TOPO_PKG_DOMAIN); + c->topo.logical_die_id = topology_get_logical_id(apicid, TOPO_DIE_DOMAIN); + + /* Package relative core ID */ + c->topo.core_id = (apicid & topo_domain_mask(TOPO_PKG_DOMAIN)) >> + x86_topo_system.dom_shifts[TOPO_SMT_DOMAIN]; + + c->topo.amd_node_id = tscan->amd_node_id; + + if (c->x86_vendor == X86_VENDOR_AMD) + cpu_topology_fixup_amd(tscan); +} + +void cpu_parse_topology(struct cpuinfo_x86 *c) +{ + unsigned int dom, cpu = smp_processor_id(); + struct topo_scan tscan = { .c = c, }; + + parse_topology(&tscan, false); + + if (IS_ENABLED(CONFIG_X86_LOCAL_APIC)) { + if (c->topo.initial_apicid != c->topo.apicid) { + pr_err(FW_BUG "CPU%4u: APIC ID mismatch. CPUID: 0x%04x APIC: 0x%04x\n", + cpu, c->topo.initial_apicid, c->topo.apicid); + } + + if (c->topo.apicid != cpuid_to_apicid[cpu]) { + pr_err(FW_BUG "CPU%4u: APIC ID mismatch. Firmware: 0x%04x APIC: 0x%04x\n", + cpu, cpuid_to_apicid[cpu], c->topo.apicid); + } + } + + for (dom = TOPO_SMT_DOMAIN; dom < TOPO_MAX_DOMAIN; dom++) { + if (tscan.dom_shifts[dom] == x86_topo_system.dom_shifts[dom]) + continue; + pr_err(FW_BUG "CPU%d: Topology domain %u shift %u != %u\n", cpu, dom, + tscan.dom_shifts[dom], x86_topo_system.dom_shifts[dom]); + } + + topo_set_ids(&tscan); +} + +void __init cpu_init_topology(struct cpuinfo_x86 *c) +{ + struct topo_scan tscan = { .c = c, }; + unsigned int dom, sft; + + parse_topology(&tscan, true); + + /* Copy the shift values and calculate the unit sizes. */ + memcpy(x86_topo_system.dom_shifts, tscan.dom_shifts, sizeof(x86_topo_system.dom_shifts)); + + dom = TOPO_SMT_DOMAIN; + x86_topo_system.dom_size[dom] = 1U << x86_topo_system.dom_shifts[dom]; + + for (dom++; dom < TOPO_MAX_DOMAIN; dom++) { + sft = x86_topo_system.dom_shifts[dom] - x86_topo_system.dom_shifts[dom - 1]; + x86_topo_system.dom_size[dom] = 1U << sft; + } + + topo_set_ids(&tscan); + + /* + * AMD systems have Nodes per package which cannot be mapped to + * APIC ID. + */ + __amd_nodes_per_pkg = tscan.amd_nodes_per_pkg; +} diff --git a/arch/x86/kernel/cpu/topology_ext.c b/arch/x86/kernel/cpu/topology_ext.c new file mode 100644 index 000000000000..e477228cd5b2 --- /dev/null +++ b/arch/x86/kernel/cpu/topology_ext.c @@ -0,0 +1,130 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/cpu.h> + +#include <asm/apic.h> +#include <asm/memtype.h> +#include <asm/processor.h> + +#include "cpu.h" + +enum topo_types { + INVALID_TYPE = 0, + SMT_TYPE = 1, + CORE_TYPE = 2, + MAX_TYPE_0B = 3, + MODULE_TYPE = 3, + TILE_TYPE = 4, + DIE_TYPE = 5, + DIEGRP_TYPE = 6, + MAX_TYPE_1F = 7, +}; + +/* + * Use a lookup table for the case that there are future types > 6 which + * describe an intermediate domain level which does not exist today. + */ +static const unsigned int topo_domain_map_0b_1f[MAX_TYPE_1F] = { + [SMT_TYPE] = TOPO_SMT_DOMAIN, + [CORE_TYPE] = TOPO_CORE_DOMAIN, + [MODULE_TYPE] = TOPO_MODULE_DOMAIN, + [TILE_TYPE] = TOPO_TILE_DOMAIN, + [DIE_TYPE] = TOPO_DIE_DOMAIN, + [DIEGRP_TYPE] = TOPO_DIEGRP_DOMAIN, +}; + +static inline bool topo_subleaf(struct topo_scan *tscan, u32 leaf, u32 subleaf, + unsigned int *last_dom) +{ + unsigned int dom, maxtype; + const unsigned int *map; + struct { + // eax + u32 x2apic_shift : 5, // Number of bits to shift APIC ID right + // for the topology ID at the next level + : 27; // Reserved + // ebx + u32 num_processors : 16, // Number of processors at current level + : 16; // Reserved + // ecx + u32 level : 8, // Current topology level. Same as sub leaf number + type : 8, // Level type. If 0, invalid + : 16; // Reserved + // edx + u32 x2apic_id : 32; // X2APIC ID of the current logical processor + } sl; + + switch (leaf) { + case 0x0b: maxtype = MAX_TYPE_0B; map = topo_domain_map_0b_1f; break; + case 0x1f: maxtype = MAX_TYPE_1F; map = topo_domain_map_0b_1f; break; + default: return false; + } + + cpuid_subleaf(leaf, subleaf, &sl); + + if (!sl.num_processors || sl.type == INVALID_TYPE) + return false; + + if (sl.type >= maxtype) { + pr_err_once("Topology: leaf 0x%x:%d Unknown domain type %u\n", + leaf, subleaf, sl.type); + /* + * It really would have been too obvious to make the domain + * type space sparse and leave a few reserved types between + * the points which might change instead of following the + * usual "this can be fixed in software" principle. + */ + dom = *last_dom + 1; + } else { + dom = map[sl.type]; + *last_dom = dom; + } + + if (!dom) { + tscan->c->topo.initial_apicid = sl.x2apic_id; + } else if (tscan->c->topo.initial_apicid != sl.x2apic_id) { + pr_warn_once(FW_BUG "CPUID leaf 0x%x subleaf %d APIC ID mismatch %x != %x\n", + leaf, subleaf, tscan->c->topo.initial_apicid, sl.x2apic_id); + } + + topology_set_dom(tscan, dom, sl.x2apic_shift, sl.num_processors); + return true; +} + +static bool parse_topology_leaf(struct topo_scan *tscan, u32 leaf) +{ + unsigned int last_dom; + u32 subleaf; + + /* Read all available subleafs and populate the levels */ + for (subleaf = 0, last_dom = 0; topo_subleaf(tscan, leaf, subleaf, &last_dom); subleaf++); + + /* If subleaf 0 failed to parse, give up */ + if (!subleaf) + return false; + + /* + * There are machines in the wild which have shift 0 in the subleaf + * 0, but advertise 2 logical processors at that level. They are + * truly SMT. + */ + if (!tscan->dom_shifts[TOPO_SMT_DOMAIN] && tscan->dom_ncpus[TOPO_SMT_DOMAIN] > 1) { + unsigned int sft = get_count_order(tscan->dom_ncpus[TOPO_SMT_DOMAIN]); + + pr_warn_once(FW_BUG "CPUID leaf 0x%x subleaf 0 has shift level 0 but %u CPUs. Fixing it up.\n", + leaf, tscan->dom_ncpus[TOPO_SMT_DOMAIN]); + topology_update_dom(tscan, TOPO_SMT_DOMAIN, sft, tscan->dom_ncpus[TOPO_SMT_DOMAIN]); + } + + set_cpu_cap(tscan->c, X86_FEATURE_XTOPOLOGY); + return true; +} + +bool cpu_parse_topology_ext(struct topo_scan *tscan) +{ + /* Intel: Try leaf 0x1F first. */ + if (tscan->c->cpuid_level >= 0x1f && parse_topology_leaf(tscan, 0x1f)) + return true; + + /* Intel/AMD: Fall back to leaf 0xB if available */ + return tscan->c->cpuid_level >= 0x0b && parse_topology_leaf(tscan, 0x0b); +} diff --git a/arch/x86/kernel/cpu/zhaoxin.c b/arch/x86/kernel/cpu/zhaoxin.c index 415564a6523b..90eba7eb5335 100644 --- a/arch/x86/kernel/cpu/zhaoxin.c +++ b/arch/x86/kernel/cpu/zhaoxin.c @@ -71,10 +71,6 @@ static void init_zhaoxin(struct cpuinfo_x86 *c) { early_init_zhaoxin(c); init_intel_cacheinfo(c); - detect_num_cpu_cores(c); -#ifdef CONFIG_X86_32 - detect_ht(c); -#endif if (c->cpuid_level > 9) { unsigned int eax = cpuid_eax(10); diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c index b6b044356f1b..e74d0c4286c1 100644 --- a/arch/x86/kernel/crash.c +++ b/arch/x86/kernel/crash.c @@ -26,6 +26,7 @@ #include <linux/vmalloc.h> #include <linux/memblock.h> +#include <asm/bootparam.h> #include <asm/processor.h> #include <asm/hardirq.h> #include <asm/nmi.h> @@ -40,6 +41,7 @@ #include <asm/intel_pt.h> #include <asm/crash.h> #include <asm/cmdline.h> +#include <asm/sev.h> /* Used while preparing memory map entries for second kernel */ struct crash_memmap_data { @@ -59,6 +61,8 @@ static void kdump_nmi_callback(int cpu, struct pt_regs *regs) */ cpu_emergency_stop_pt(); + kdump_sev_callback(); + disable_local_APIC(); } diff --git a/arch/x86/kernel/devicetree.c b/arch/x86/kernel/devicetree.c index afd09924094e..4aeafe63521b 100644 --- a/arch/x86/kernel/devicetree.c +++ b/arch/x86/kernel/devicetree.c @@ -136,7 +136,7 @@ static void __init dtb_cpu_setup(void) pr_warn("%pOF: missing local APIC ID\n", dn); continue; } - generic_processor_info(apic_id); + topology_register_apic(apic_id, CPU_ACPIID_INVALID, true); } } @@ -302,7 +302,7 @@ void __init x86_flattree_get_config(void) } #endif -void __init x86_dtb_init(void) +void __init x86_dtb_parse_smp_config(void) { if (!of_have_populated_dt()) return; diff --git a/arch/x86/kernel/dumpstack.c b/arch/x86/kernel/dumpstack.c index f18ca44c904b..44a91ef5a23b 100644 --- a/arch/x86/kernel/dumpstack.c +++ b/arch/x86/kernel/dumpstack.c @@ -410,7 +410,7 @@ static void __die_header(const char *str, struct pt_regs *regs, long err) IS_ENABLED(CONFIG_SMP) ? " SMP" : "", debug_pagealloc_enabled() ? " DEBUG_PAGEALLOC" : "", IS_ENABLED(CONFIG_KASAN) ? " KASAN" : "", - IS_ENABLED(CONFIG_PAGE_TABLE_ISOLATION) ? + IS_ENABLED(CONFIG_MITIGATION_PAGE_TABLE_ISOLATION) ? (boot_cpu_has(X86_FEATURE_PTI) ? " PTI" : " NOPTI") : ""); } NOKPROBE_SYMBOL(__die_header); diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c index fb8cf953380d..b66f540de054 100644 --- a/arch/x86/kernel/e820.c +++ b/arch/x86/kernel/e820.c @@ -1017,10 +1017,12 @@ void __init e820__reserve_setup_data(void) e820__range_update(pa_data, sizeof(*data)+data->len, E820_TYPE_RAM, E820_TYPE_RESERVED_KERN); /* - * SETUP_EFI and SETUP_IMA are supplied by kexec and do not need - * to be reserved. + * SETUP_EFI, SETUP_IMA and SETUP_RNG_SEED are supplied by + * kexec and do not need to be reserved. */ - if (data->type != SETUP_EFI && data->type != SETUP_IMA) + if (data->type != SETUP_EFI && + data->type != SETUP_IMA && + data->type != SETUP_RNG_SEED) e820__range_update_kexec(pa_data, sizeof(*data) + data->len, E820_TYPE_RAM, E820_TYPE_RESERVED_KERN); diff --git a/arch/x86/kernel/espfix_64.c b/arch/x86/kernel/espfix_64.c index 16f9814c9be0..6726e0473d0b 100644 --- a/arch/x86/kernel/espfix_64.c +++ b/arch/x86/kernel/espfix_64.c @@ -106,6 +106,10 @@ void __init init_espfix_bsp(void) pgd_t *pgd; p4d_t *p4d; + /* FRED systems always restore the full value of %rsp */ + if (cpu_feature_enabled(X86_FEATURE_FRED)) + return; + /* Install the espfix pud into the kernel page directory */ pgd = &init_top_pgt[pgd_index(ESPFIX_BASE_ADDR)]; p4d = p4d_alloc(&init_mm, pgd, ESPFIX_BASE_ADDR); @@ -129,6 +133,10 @@ void init_espfix_ap(int cpu) void *stack_page; pteval_t ptemask; + /* FRED systems always restore the full value of %rsp */ + if (cpu_feature_enabled(X86_FEATURE_FRED)) + return; + /* We only have to do this once... */ if (likely(per_cpu(espfix_stack, cpu))) return; /* Already initialized */ diff --git a/arch/x86/kernel/fpu/bugs.c b/arch/x86/kernel/fpu/bugs.c index a06b876bbf2d..edbafc5940e3 100644 --- a/arch/x86/kernel/fpu/bugs.c +++ b/arch/x86/kernel/fpu/bugs.c @@ -2,6 +2,8 @@ /* * x86 FPU bug checks: */ +#include <linux/printk.h> + #include <asm/cpufeature.h> #include <asm/fpu/api.h> diff --git a/arch/x86/kernel/fpu/signal.c b/arch/x86/kernel/fpu/signal.c index 558076dbde5b..247f2225aa9f 100644 --- a/arch/x86/kernel/fpu/signal.c +++ b/arch/x86/kernel/fpu/signal.c @@ -274,12 +274,13 @@ static int __restore_fpregs_from_user(void __user *buf, u64 ufeatures, * Attempt to restore the FPU registers directly from user memory. * Pagefaults are handled and any errors returned are fatal. */ -static bool restore_fpregs_from_user(void __user *buf, u64 xrestore, - bool fx_only, unsigned int size) +static bool restore_fpregs_from_user(void __user *buf, u64 xrestore, bool fx_only) { struct fpu *fpu = ¤t->thread.fpu; int ret; + /* Restore enabled features only. */ + xrestore &= fpu->fpstate->user_xfeatures; retry: fpregs_lock(); /* Ensure that XFD is up to date */ @@ -309,7 +310,7 @@ retry: if (ret != X86_TRAP_PF) return false; - if (!fault_in_readable(buf, size)) + if (!fault_in_readable(buf, fpu->fpstate->user_size)) goto retry; return false; } @@ -339,7 +340,6 @@ static bool __fpu_restore_sig(void __user *buf, void __user *buf_fx, struct user_i387_ia32_struct env; bool success, fx_only = false; union fpregs_state *fpregs; - unsigned int state_size; u64 user_xfeatures = 0; if (use_xsave()) { @@ -349,17 +349,14 @@ static bool __fpu_restore_sig(void __user *buf, void __user *buf_fx, return false; fx_only = !fx_sw_user.magic1; - state_size = fx_sw_user.xstate_size; user_xfeatures = fx_sw_user.xfeatures; } else { user_xfeatures = XFEATURE_MASK_FPSSE; - state_size = fpu->fpstate->user_size; } if (likely(!ia32_fxstate)) { /* Restore the FPU registers directly from user memory. */ - return restore_fpregs_from_user(buf_fx, user_xfeatures, fx_only, - state_size); + return restore_fpregs_from_user(buf_fx, user_xfeatures, fx_only); } /* diff --git a/arch/x86/kernel/fred.c b/arch/x86/kernel/fred.c new file mode 100644 index 000000000000..4bcd8791ad96 --- /dev/null +++ b/arch/x86/kernel/fred.c @@ -0,0 +1,59 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#include <linux/kernel.h> + +#include <asm/desc.h> +#include <asm/fred.h> +#include <asm/tlbflush.h> +#include <asm/traps.h> + +/* #DB in the kernel would imply the use of a kernel debugger. */ +#define FRED_DB_STACK_LEVEL 1UL +#define FRED_NMI_STACK_LEVEL 2UL +#define FRED_MC_STACK_LEVEL 2UL +/* + * #DF is the highest level because a #DF means "something went wrong + * *while delivering an exception*." The number of cases for which that + * can happen with FRED is drastically reduced and basically amounts to + * "the stack you pointed me to is broken." Thus, always change stacks + * on #DF, which means it should be at the highest level. + */ +#define FRED_DF_STACK_LEVEL 3UL + +#define FRED_STKLVL(vector, lvl) ((lvl) << (2 * (vector))) + +void cpu_init_fred_exceptions(void) +{ + /* When FRED is enabled by default, remove this log message */ + pr_info("Initialize FRED on CPU%d\n", smp_processor_id()); + + wrmsrl(MSR_IA32_FRED_CONFIG, + /* Reserve for CALL emulation */ + FRED_CONFIG_REDZONE | + FRED_CONFIG_INT_STKLVL(0) | + FRED_CONFIG_ENTRYPOINT(asm_fred_entrypoint_user)); + + /* + * The purpose of separate stacks for NMI, #DB and #MC *in the kernel* + * (remember that user space faults are always taken on stack level 0) + * is to avoid overflowing the kernel stack. + */ + wrmsrl(MSR_IA32_FRED_STKLVLS, + FRED_STKLVL(X86_TRAP_DB, FRED_DB_STACK_LEVEL) | + FRED_STKLVL(X86_TRAP_NMI, FRED_NMI_STACK_LEVEL) | + FRED_STKLVL(X86_TRAP_MC, FRED_MC_STACK_LEVEL) | + FRED_STKLVL(X86_TRAP_DF, FRED_DF_STACK_LEVEL)); + + /* The FRED equivalents to IST stacks... */ + wrmsrl(MSR_IA32_FRED_RSP1, __this_cpu_ist_top_va(DB)); + wrmsrl(MSR_IA32_FRED_RSP2, __this_cpu_ist_top_va(NMI)); + wrmsrl(MSR_IA32_FRED_RSP3, __this_cpu_ist_top_va(DF)); + + /* Enable FRED */ + cr4_set_bits(X86_CR4_FRED); + /* Any further IDT use is a bug */ + idt_invalidate(); + + /* Use int $0x80 for 32-bit system calls in FRED mode */ + setup_clear_cpu_cap(X86_FEATURE_SYSENTER32); + setup_clear_cpu_cap(X86_FEATURE_SYSCALL32); +} diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c index 12df54ff0e81..70139d9d2e01 100644 --- a/arch/x86/kernel/ftrace.c +++ b/arch/x86/kernel/ftrace.c @@ -307,7 +307,8 @@ union ftrace_op_code_union { } __attribute__((packed)); }; -#define RET_SIZE (IS_ENABLED(CONFIG_RETPOLINE) ? 5 : 1 + IS_ENABLED(CONFIG_SLS)) +#define RET_SIZE \ + (IS_ENABLED(CONFIG_MITIGATION_RETPOLINE) ? 5 : 1 + IS_ENABLED(CONFIG_MITIGATION_SLS)) static unsigned long create_trampoline(struct ftrace_ops *ops, unsigned int *tramp_size) diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index dc0956067944..212e8e06aeba 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -22,6 +22,8 @@ #include <linux/cc_platform.h> #include <linux/pgtable.h> +#include <asm/asm.h> +#include <asm/page_64.h> #include <asm/processor.h> #include <asm/proto.h> #include <asm/smp.h> @@ -67,42 +69,11 @@ unsigned long vmemmap_base __ro_after_init = __VMEMMAP_BASE_L4; EXPORT_SYMBOL(vmemmap_base); #endif -/* - * GDT used on the boot CPU before switching to virtual addresses. - */ -static struct desc_struct startup_gdt[GDT_ENTRIES] __initdata = { - [GDT_ENTRY_KERNEL32_CS] = GDT_ENTRY_INIT(DESC_CODE32, 0, 0xfffff), - [GDT_ENTRY_KERNEL_CS] = GDT_ENTRY_INIT(DESC_CODE64, 0, 0xfffff), - [GDT_ENTRY_KERNEL_DS] = GDT_ENTRY_INIT(DESC_DATA64, 0, 0xfffff), -}; - -/* - * Address needs to be set at runtime because it references the startup_gdt - * while the kernel still uses a direct mapping. - */ -static struct desc_ptr startup_gdt_descr __initdata = { - .size = sizeof(startup_gdt)-1, - .address = 0, -}; - -static void __head *fixup_pointer(void *ptr, unsigned long physaddr) -{ - return ptr - (void *)_text + (void *)physaddr; -} - -static unsigned long __head *fixup_long(void *ptr, unsigned long physaddr) -{ - return fixup_pointer(ptr, physaddr); -} - -#ifdef CONFIG_X86_5LEVEL -static unsigned int __head *fixup_int(void *ptr, unsigned long physaddr) +static inline bool check_la57_support(void) { - return fixup_pointer(ptr, physaddr); -} + if (!IS_ENABLED(CONFIG_X86_5LEVEL)) + return false; -static bool __head check_la57_support(unsigned long physaddr) -{ /* * 5-level paging is detected and enabled at kernel decompression * stage. Only check if it has been enabled there. @@ -110,21 +81,8 @@ static bool __head check_la57_support(unsigned long physaddr) if (!(native_read_cr4() & X86_CR4_LA57)) return false; - *fixup_int(&__pgtable_l5_enabled, physaddr) = 1; - *fixup_int(&pgdir_shift, physaddr) = 48; - *fixup_int(&ptrs_per_p4d, physaddr) = 512; - *fixup_long(&page_offset_base, physaddr) = __PAGE_OFFSET_BASE_L5; - *fixup_long(&vmalloc_base, physaddr) = __VMALLOC_BASE_L5; - *fixup_long(&vmemmap_base, physaddr) = __VMEMMAP_BASE_L5; - return true; } -#else -static bool __head check_la57_support(unsigned long physaddr) -{ - return false; -} -#endif static unsigned long __head sme_postprocess_startup(struct boot_params *bp, pmdval_t *pmd) { @@ -173,23 +131,22 @@ static unsigned long __head sme_postprocess_startup(struct boot_params *bp, pmdv * doesn't have to generate PC-relative relocations when accessing globals from * that function. Clang actually does not generate them, which leads to * boot-time crashes. To work around this problem, every global pointer must - * be adjusted using fixup_pointer(). + * be accessed using RIP_REL_REF(). */ unsigned long __head __startup_64(unsigned long physaddr, struct boot_params *bp) { - unsigned long load_delta, *p; + pmd_t (*early_pgts)[PTRS_PER_PMD] = RIP_REL_REF(early_dynamic_pgts); unsigned long pgtable_flags; + unsigned long load_delta; pgdval_t *pgd; p4dval_t *p4d; pudval_t *pud; pmdval_t *pmd, pmd_entry; - pteval_t *mask_ptr; bool la57; int i; - unsigned int *next_pgt_ptr; - la57 = check_la57_support(physaddr); + la57 = check_la57_support(); /* Is the address too large? */ if (physaddr >> MAX_PHYSMEM_BITS) @@ -200,6 +157,7 @@ unsigned long __head __startup_64(unsigned long physaddr, * and the address I am actually running at. */ load_delta = physaddr - (unsigned long)(_text - __START_KERNEL_map); + RIP_REL_REF(phys_base) = load_delta; /* Is the address not 2M aligned? */ if (load_delta & ~PMD_MASK) @@ -210,26 +168,21 @@ unsigned long __head __startup_64(unsigned long physaddr, /* Fixup the physical addresses in the page table */ - pgd = fixup_pointer(early_top_pgt, physaddr); - p = pgd + pgd_index(__START_KERNEL_map); - if (la57) - *p = (unsigned long)level4_kernel_pgt; - else - *p = (unsigned long)level3_kernel_pgt; - *p += _PAGE_TABLE_NOENC - __START_KERNEL_map + load_delta; + pgd = &RIP_REL_REF(early_top_pgt)->pgd; + pgd[pgd_index(__START_KERNEL_map)] += load_delta; if (la57) { - p4d = fixup_pointer(level4_kernel_pgt, physaddr); - p4d[511] += load_delta; + p4d = (p4dval_t *)&RIP_REL_REF(level4_kernel_pgt); + p4d[MAX_PTRS_PER_P4D - 1] += load_delta; + + pgd[pgd_index(__START_KERNEL_map)] = (pgdval_t)p4d | _PAGE_TABLE_NOENC; } - pud = fixup_pointer(level3_kernel_pgt, physaddr); - pud[510] += load_delta; - pud[511] += load_delta; + RIP_REL_REF(level3_kernel_pgt)[PTRS_PER_PUD - 2].pud += load_delta; + RIP_REL_REF(level3_kernel_pgt)[PTRS_PER_PUD - 1].pud += load_delta; - pmd = fixup_pointer(level2_fixmap_pgt, physaddr); for (i = FIXMAP_PMD_TOP; i > FIXMAP_PMD_TOP - FIXMAP_PMD_NUM; i--) - pmd[i] += load_delta; + RIP_REL_REF(level2_fixmap_pgt)[i].pmd += load_delta; /* * Set up the identity mapping for the switchover. These @@ -238,15 +191,14 @@ unsigned long __head __startup_64(unsigned long physaddr, * it avoids problems around wraparound. */ - next_pgt_ptr = fixup_pointer(&next_early_pgt, physaddr); - pud = fixup_pointer(early_dynamic_pgts[(*next_pgt_ptr)++], physaddr); - pmd = fixup_pointer(early_dynamic_pgts[(*next_pgt_ptr)++], physaddr); + pud = &early_pgts[0]->pmd; + pmd = &early_pgts[1]->pmd; + RIP_REL_REF(next_early_pgt) = 2; pgtable_flags = _KERNPG_TABLE_NOENC + sme_get_me_mask(); if (la57) { - p4d = fixup_pointer(early_dynamic_pgts[(*next_pgt_ptr)++], - physaddr); + p4d = &early_pgts[RIP_REL_REF(next_early_pgt)++]->pmd; i = (physaddr >> PGDIR_SHIFT) % PTRS_PER_PGD; pgd[i + 0] = (pgdval_t)p4d + pgtable_flags; @@ -267,8 +219,7 @@ unsigned long __head __startup_64(unsigned long physaddr, pmd_entry = __PAGE_KERNEL_LARGE_EXEC & ~_PAGE_GLOBAL; /* Filter out unsupported __PAGE_KERNEL_* bits: */ - mask_ptr = fixup_pointer(&__supported_pte_mask, physaddr); - pmd_entry &= *mask_ptr; + pmd_entry &= RIP_REL_REF(__supported_pte_mask); pmd_entry += sme_get_me_mask(); pmd_entry += physaddr; @@ -294,7 +245,7 @@ unsigned long __head __startup_64(unsigned long physaddr, * error, causing the BIOS to halt the system. */ - pmd = fixup_pointer(level2_kernel_pgt, physaddr); + pmd = &RIP_REL_REF(level2_kernel_pgt)->pmd; /* invalidate pages before the kernel image */ for (i = 0; i < pmd_index((unsigned long)_text); i++) @@ -309,12 +260,6 @@ unsigned long __head __startup_64(unsigned long physaddr, for (; i < PTRS_PER_PMD; i++) pmd[i] &= ~_PAGE_PRESENT; - /* - * Fixup phys_base - remove the memory encryption mask to obtain - * the true physical address. - */ - *fixup_long(&phys_base, physaddr) += load_delta - sme_get_me_mask(); - return sme_postprocess_startup(bp, pmd); } @@ -486,6 +431,15 @@ asmlinkage __visible void __init __noreturn x86_64_start_kernel(char * real_mode (__START_KERNEL & PGDIR_MASK))); BUILD_BUG_ON(__fix_to_virt(__end_of_fixed_addresses) <= MODULES_END); + if (check_la57_support()) { + __pgtable_l5_enabled = 1; + pgdir_shift = 48; + ptrs_per_p4d = 512; + page_offset_base = __PAGE_OFFSET_BASE_L5; + vmalloc_base = __VMALLOC_BASE_L5; + vmemmap_base = __VMEMMAP_BASE_L5; + } + cr4_init_shadow(); /* Kill off the identity-map trampoline */ @@ -569,62 +523,52 @@ void __init __noreturn x86_64_start_reservations(char *real_mode_data) */ static gate_desc bringup_idt_table[NUM_EXCEPTION_VECTORS] __page_aligned_data; -static struct desc_ptr bringup_idt_descr = { - .size = (NUM_EXCEPTION_VECTORS * sizeof(gate_desc)) - 1, - .address = 0, /* Set at runtime */ -}; - -static void set_bringup_idt_handler(gate_desc *idt, int n, void *handler) +/* This may run while still in the direct mapping */ +static void __head startup_64_load_idt(void *vc_handler) { -#ifdef CONFIG_AMD_MEM_ENCRYPT + struct desc_ptr desc = { + .address = (unsigned long)&RIP_REL_REF(bringup_idt_table), + .size = sizeof(bringup_idt_table) - 1, + }; struct idt_data data; - gate_desc desc; - - init_idt_data(&data, n, handler); - idt_init_desc(&desc, &data); - native_write_idt_entry(idt, n, &desc); -#endif -} + gate_desc idt_desc; -/* This runs while still in the direct mapping */ -static void __head startup_64_load_idt(unsigned long physbase) -{ - struct desc_ptr *desc = fixup_pointer(&bringup_idt_descr, physbase); - gate_desc *idt = fixup_pointer(bringup_idt_table, physbase); - - - if (IS_ENABLED(CONFIG_AMD_MEM_ENCRYPT)) { - void *handler; - - /* VMM Communication Exception */ - handler = fixup_pointer(vc_no_ghcb, physbase); - set_bringup_idt_handler(idt, X86_TRAP_VC, handler); + /* @vc_handler is set only for a VMM Communication Exception */ + if (vc_handler) { + init_idt_data(&data, X86_TRAP_VC, vc_handler); + idt_init_desc(&idt_desc, &data); + native_write_idt_entry((gate_desc *)desc.address, X86_TRAP_VC, &idt_desc); } - desc->address = (unsigned long)idt; - native_load_idt(desc); + native_load_idt(&desc); } /* This is used when running on kernel addresses */ void early_setup_idt(void) { - /* VMM Communication Exception */ + void *handler = NULL; + if (IS_ENABLED(CONFIG_AMD_MEM_ENCRYPT)) { setup_ghcb(); - set_bringup_idt_handler(bringup_idt_table, X86_TRAP_VC, vc_boot_ghcb); + handler = vc_boot_ghcb; } - bringup_idt_descr.address = (unsigned long)bringup_idt_table; - native_load_idt(&bringup_idt_descr); + startup_64_load_idt(handler); } /* * Setup boot CPU state needed before kernel switches to virtual addresses. */ -void __head startup_64_setup_env(unsigned long physbase) +void __head startup_64_setup_gdt_idt(void) { + void *handler = NULL; + + struct desc_ptr startup_gdt_descr = { + .address = (unsigned long)&RIP_REL_REF(init_per_cpu_var(gdt_page.gdt)), + .size = GDT_SIZE - 1, + }; + /* Load GDT */ - startup_gdt_descr.address = (unsigned long)fixup_pointer(startup_gdt, physbase); native_load_gdt(&startup_gdt_descr); /* New GDT is live - reload data segment registers */ @@ -632,5 +576,8 @@ void __head startup_64_setup_env(unsigned long physbase) "movl %%eax, %%ss\n" "movl %%eax, %%es\n" : : "a"(__KERNEL_DS) : "memory"); - startup_64_load_idt(physbase); + if (IS_ENABLED(CONFIG_AMD_MEM_ENCRYPT)) + handler = &RIP_REL_REF(vc_no_ghcb); + + startup_64_load_idt(handler); } diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S index 487ac57e2c81..b50f3641c4d6 100644 --- a/arch/x86/kernel/head_32.S +++ b/arch/x86/kernel/head_32.S @@ -414,7 +414,7 @@ __REFDATA .align 4 SYM_DATA(initial_code, .long i386_start_kernel) -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION #define PGD_ALIGN (2 * PAGE_SIZE) #define PTI_USER_PGD_FILL 1024 #else @@ -474,7 +474,7 @@ SYM_DATA_START(initial_page_table) # endif .align PAGE_SIZE /* needs to be page-sized too */ -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION /* * PTI needs another page so sync_initial_pagetable() works correctly * and does not scribble over the data which is placed behind the diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S index d4918d03efb4..d8198fbd70e5 100644 --- a/arch/x86/kernel/head_64.S +++ b/arch/x86/kernel/head_64.S @@ -26,6 +26,7 @@ #include <asm/apicdef.h> #include <asm/fixmap.h> #include <asm/smp.h> +#include <asm/thread_info.h> /* * We are not able to switch in one step to the final KERNEL ADDRESS SPACE @@ -39,7 +40,6 @@ L4_START_KERNEL = l4_index(__START_KERNEL_map) L3_START_KERNEL = pud_index(__START_KERNEL_map) - .text __HEAD .code64 SYM_CODE_START_NOALIGN(startup_64) @@ -66,9 +66,7 @@ SYM_CODE_START_NOALIGN(startup_64) mov %rsi, %r15 /* Set up the stack for verify_cpu() */ - leaq (__end_init_task - PTREGS_SIZE)(%rip), %rsp - - leaq _text(%rip), %rdi + leaq (__end_init_task - TOP_OF_KERNEL_STACK_PADDING - PTREGS_SIZE)(%rip), %rsp /* Setup GSBASE to allow stack canary access for C code */ movl $MSR_GS_BASE, %ecx @@ -77,7 +75,7 @@ SYM_CODE_START_NOALIGN(startup_64) shrq $32, %rdx wrmsr - call startup_64_setup_env + call startup_64_setup_gdt_idt /* Now switch to __KERNEL_CS so IRET works reliably */ pushq $__KERNEL_CS @@ -113,13 +111,11 @@ SYM_CODE_START_NOALIGN(startup_64) call __startup_64 /* Form the CR3 value being sure to include the CR3 modifier */ - addq $(early_top_pgt - __START_KERNEL_map), %rax + leaq early_top_pgt(%rip), %rcx + addq %rcx, %rax #ifdef CONFIG_AMD_MEM_ENCRYPT mov %rax, %rdi - mov %rax, %r14 - - addq phys_base(%rip), %rdi /* * For SEV guests: Verify that the C-bit is correct. A malicious @@ -128,17 +124,23 @@ SYM_CODE_START_NOALIGN(startup_64) * the next RET instruction. */ call sev_verify_cbit +#endif /* - * Restore CR3 value without the phys_base which will be added - * below, before writing %cr3. + * Switch to early_top_pgt which still has the identity mappings + * present. */ - mov %r14, %rax -#endif + movq %rax, %cr3 - jmp 1f + /* Branch to the common startup code at its kernel virtual address */ + ANNOTATE_RETPOLINE_SAFE + jmp *0f(%rip) SYM_CODE_END(startup_64) + __INITRODATA +0: .quad common_startup_64 + + .text SYM_CODE_START(secondary_startup_64) UNWIND_HINT_END_OF_STACK ANNOTATE_NOENDBR @@ -171,22 +173,39 @@ SYM_INNER_LABEL(secondary_startup_64_no_verify, SYM_L_GLOBAL) ANNOTATE_NOENDBR /* Clear %R15 which holds the boot_params pointer on the boot CPU */ - xorq %r15, %r15 + xorl %r15d, %r15d + + /* Derive the runtime physical address of init_top_pgt[] */ + movq phys_base(%rip), %rax + addq $(init_top_pgt - __START_KERNEL_map), %rax /* * Retrieve the modifier (SME encryption mask if SME is active) to be * added to the initial pgdir entry that will be programmed into CR3. */ #ifdef CONFIG_AMD_MEM_ENCRYPT - movq sme_me_mask, %rax -#else - xorq %rax, %rax + addq sme_me_mask(%rip), %rax #endif + /* + * Switch to the init_top_pgt here, away from the trampoline_pgd and + * unmap the identity mapped ranges. + */ + movq %rax, %cr3 - /* Form the CR3 value being sure to include the CR3 modifier */ - addq $(init_top_pgt - __START_KERNEL_map), %rax -1: +SYM_INNER_LABEL(common_startup_64, SYM_L_LOCAL) + UNWIND_HINT_END_OF_STACK + ANNOTATE_NOENDBR + /* + * Create a mask of CR4 bits to preserve. Omit PGE in order to flush + * global 1:1 translations from the TLBs. + * + * From the SDM: + * "If CR4.PGE is changing from 0 to 1, there were no global TLB + * entries before the execution; if CR4.PGE is changing from 1 to 0, + * there will be no global TLB entries after the execution." + */ + movl $(X86_CR4_PAE | X86_CR4_LA57), %edx #ifdef CONFIG_X86_MCE /* * Preserve CR4.MCE if the kernel will enable #MC support. @@ -195,52 +214,20 @@ SYM_INNER_LABEL(secondary_startup_64_no_verify, SYM_L_GLOBAL) * configured will crash the system regardless of the CR4.MCE value set * here. */ - movq %cr4, %rcx - andl $X86_CR4_MCE, %ecx -#else - movl $0, %ecx + orl $X86_CR4_MCE, %edx #endif + movq %cr4, %rcx + andl %edx, %ecx - /* Enable PAE mode, PSE, PGE and LA57 */ - orl $(X86_CR4_PAE | X86_CR4_PSE | X86_CR4_PGE), %ecx -#ifdef CONFIG_X86_5LEVEL - testb $1, __pgtable_l5_enabled(%rip) - jz 1f - orl $X86_CR4_LA57, %ecx -1: -#endif + /* Even if ignored in long mode, set PSE uniformly on all logical CPUs. */ + btsl $X86_CR4_PSE_BIT, %ecx movq %rcx, %cr4 - /* Setup early boot stage 4-/5-level pagetables. */ - addq phys_base(%rip), %rax - /* - * Switch to new page-table - * - * For the boot CPU this switches to early_top_pgt which still has the - * identity mappings present. The secondary CPUs will switch to the - * init_top_pgt here, away from the trampoline_pgd and unmap the - * identity mapped ranges. + * Set CR4.PGE to re-enable global translations. */ - movq %rax, %cr3 - - /* - * Do a global TLB flush after the CR3 switch to make sure the TLB - * entries from the identity mapping are flushed. - */ - movq %cr4, %rcx - movq %rcx, %rax - xorq $X86_CR4_PGE, %rcx + btsl $X86_CR4_PGE_BIT, %ecx movq %rcx, %cr4 - movq %rax, %cr4 - - /* Ensure I am executing from virtual addresses */ - movq $1f, %rax - ANNOTATE_RETPOLINE_SAFE - jmp *%rax -1: - UNWIND_HINT_END_OF_STACK - ANNOTATE_NOENDBR // above #ifdef CONFIG_SMP /* @@ -297,7 +284,7 @@ SYM_INNER_LABEL(secondary_startup_64_no_verify, SYM_L_GLOBAL) .Llookup_AP: /* EAX contains the APIC ID of the current CPU */ - xorq %rcx, %rcx + xorl %ecx, %ecx leaq cpuid_to_apicid(%rip), %rbx .Lfind_cpunr: @@ -428,39 +415,10 @@ SYM_INNER_LABEL(secondary_startup_64_no_verify, SYM_L_GLOBAL) movq %r15, %rdi .Ljump_to_C_code: - /* - * Jump to run C code and to be on a real kernel address. - * Since we are running on identity-mapped space we have to jump - * to the full 64bit address, this is only possible as indirect - * jump. In addition we need to ensure %cs is set so we make this - * a far return. - * - * Note: do not change to far jump indirect with 64bit offset. - * - * AMD does not support far jump indirect with 64bit offset. - * AMD64 Architecture Programmer's Manual, Volume 3: states only - * JMP FAR mem16:16 FF /5 Far jump indirect, - * with the target specified by a far pointer in memory. - * JMP FAR mem16:32 FF /5 Far jump indirect, - * with the target specified by a far pointer in memory. - * - * Intel64 does support 64bit offset. - * Software Developer Manual Vol 2: states: - * FF /5 JMP m16:16 Jump far, absolute indirect, - * address given in m16:16 - * FF /5 JMP m16:32 Jump far, absolute indirect, - * address given in m16:32. - * REX.W + FF /5 JMP m16:64 Jump far, absolute indirect, - * address given in m16:64. - */ - pushq $.Lafter_lret # put return address on stack for unwinder xorl %ebp, %ebp # clear frame pointer - movq initial_code(%rip), %rax - pushq $__KERNEL_CS # set correct cs - pushq %rax # target address in negative space - lretq -.Lafter_lret: - ANNOTATE_NOENDBR + ANNOTATE_RETPOLINE_SAFE + callq *initial_code(%rip) + ud2 SYM_CODE_END(secondary_startup_64) #include "verify_cpu.S" @@ -477,7 +435,7 @@ SYM_CODE_START(soft_restart_cpu) UNWIND_HINT_END_OF_STACK /* Find the idle task stack */ - movq PER_CPU_VAR(pcpu_hot) + X86_current_task, %rcx + movq PER_CPU_VAR(pcpu_hot + X86_current_task), %rcx movq TASK_threadsp(%rcx), %rsp jmp .Ljump_to_C_code @@ -622,7 +580,7 @@ SYM_CODE_END(vc_no_ghcb) #define SYM_DATA_START_PAGE_ALIGNED(name) \ SYM_START(name, SYM_L_GLOBAL, .balign PAGE_SIZE) -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION /* * Each PGD needs to be 8k long and 8k aligned. We do not * ever go out to userspace with these, so we do not @@ -655,7 +613,8 @@ SYM_CODE_END(vc_no_ghcb) .balign 4 SYM_DATA_START_PTI_ALIGNED(early_top_pgt) - .fill 512,8,0 + .fill 511,8,0 + .quad level3_kernel_pgt - __START_KERNEL_map + _PAGE_TABLE_NOENC .fill PTI_USER_PGD_FILL,8,0 SYM_DATA_END(early_top_pgt) diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c index a38d0c93a66e..c96ae8fee95e 100644 --- a/arch/x86/kernel/hpet.c +++ b/arch/x86/kernel/hpet.c @@ -568,7 +568,7 @@ static struct irq_domain *hpet_create_irq_domain(int hpet_id) fwspec.param_count = 1; fwspec.param[0] = hpet_id; - parent = irq_find_matching_fwspec(&fwspec, DOMAIN_BUS_ANY); + parent = irq_find_matching_fwspec(&fwspec, DOMAIN_BUS_GENERIC_MSI); if (!parent) { irq_domain_free_fwnode(fn); kfree(domain_info); diff --git a/arch/x86/kernel/idt.c b/arch/x86/kernel/idt.c index 660b601f1d6c..0cd53fa8c65d 100644 --- a/arch/x86/kernel/idt.c +++ b/arch/x86/kernel/idt.c @@ -337,7 +337,7 @@ void idt_invalidate(void) load_idt(&idt); } -void __init alloc_intr_gate(unsigned int n, const void *addr) +void __init idt_install_sysvec(unsigned int n, const void *function) { if (WARN_ON(n < FIRST_SYSTEM_VECTOR)) return; @@ -346,5 +346,5 @@ void __init alloc_intr_gate(unsigned int n, const void *addr) return; if (!WARN_ON(test_and_set_bit(n, system_vectors))) - set_intr_gate(n, addr); + set_intr_gate(n, function); } diff --git a/arch/x86/kernel/irqinit.c b/arch/x86/kernel/irqinit.c index c683666876f1..f79c5edc0b89 100644 --- a/arch/x86/kernel/irqinit.c +++ b/arch/x86/kernel/irqinit.c @@ -28,6 +28,7 @@ #include <asm/setup.h> #include <asm/i8259.h> #include <asm/traps.h> +#include <asm/fred.h> #include <asm/prom.h> /* @@ -96,7 +97,11 @@ void __init native_init_IRQ(void) /* Execute any quirks before the call gates are initialised: */ x86_init.irqs.pre_vector_init(); - idt_setup_apic_and_irq_gates(); + if (cpu_feature_enabled(X86_FEATURE_FRED)) + fred_complete_exception_setup(); + else + idt_setup_apic_and_irq_gates(); + lapic_assign_system_vectors(); if (!acpi_ioapic && !of_ioapic && nr_legacy_irqs()) { diff --git a/arch/x86/kernel/jailhouse.c b/arch/x86/kernel/jailhouse.c index 578d16fc040f..df337860612d 100644 --- a/arch/x86/kernel/jailhouse.c +++ b/arch/x86/kernel/jailhouse.c @@ -89,7 +89,7 @@ static void __init jailhouse_x2apic_init(void) #endif } -static void __init jailhouse_get_smp_config(unsigned int early) +static void __init jailhouse_parse_smp_config(void) { struct ioapic_domain_cfg ioapic_cfg = { .type = IOAPIC_DOMAIN_STRICT, @@ -102,7 +102,7 @@ static void __init jailhouse_get_smp_config(unsigned int early) register_lapic_address(0xfee00000); for (cpu = 0; cpu < setup_data.v1.num_cpus; cpu++) - generic_processor_info(setup_data.v1.cpu_ids[cpu]); + topology_register_apic(setup_data.v1.cpu_ids[cpu], CPU_ACPIID_INVALID, true); smp_found_config = 1; @@ -201,21 +201,23 @@ static void __init jailhouse_init_platform(void) struct setup_data header; void *mapping; - x86_init.irqs.pre_vector_init = x86_init_noop; - x86_init.timers.timer_init = jailhouse_timer_init; - x86_init.mpparse.get_smp_config = jailhouse_get_smp_config; - x86_init.pci.arch_init = jailhouse_pci_arch_init; + x86_init.irqs.pre_vector_init = x86_init_noop; + x86_init.timers.timer_init = jailhouse_timer_init; + x86_init.mpparse.find_mptable = x86_init_noop; + x86_init.mpparse.early_parse_smp_cfg = x86_init_noop; + x86_init.mpparse.parse_smp_cfg = jailhouse_parse_smp_config; + x86_init.pci.arch_init = jailhouse_pci_arch_init; - x86_platform.calibrate_cpu = jailhouse_get_tsc; - x86_platform.calibrate_tsc = jailhouse_get_tsc; - x86_platform.get_wallclock = jailhouse_get_wallclock; - x86_platform.legacy.rtc = 0; - x86_platform.legacy.warm_reset = 0; - x86_platform.legacy.i8042 = X86_LEGACY_I8042_PLATFORM_ABSENT; + x86_platform.calibrate_cpu = jailhouse_get_tsc; + x86_platform.calibrate_tsc = jailhouse_get_tsc; + x86_platform.get_wallclock = jailhouse_get_wallclock; + x86_platform.legacy.rtc = 0; + x86_platform.legacy.warm_reset = 0; + x86_platform.legacy.i8042 = X86_LEGACY_I8042_PLATFORM_ABSENT; - legacy_pic = &null_legacy_pic; + legacy_pic = &null_legacy_pic; - machine_ops.emergency_restart = jailhouse_no_restart; + machine_ops.emergency_restart = jailhouse_no_restart; while (pa_data) { mapping = early_memremap(pa_data, sizeof(header)); diff --git a/arch/x86/kernel/kexec-bzimage64.c b/arch/x86/kernel/kexec-bzimage64.c index 2a422e00ed4b..cde167b0ea92 100644 --- a/arch/x86/kernel/kexec-bzimage64.c +++ b/arch/x86/kernel/kexec-bzimage64.c @@ -503,7 +503,10 @@ static void *bzImage64_load(struct kimage *image, char *kernel, kbuf.bufsz = kernel_len - kern16_size; kbuf.memsz = PAGE_ALIGN(header->init_size); kbuf.buf_align = header->kernel_alignment; - kbuf.buf_min = MIN_KERNEL_LOAD_ADDR; + if (header->pref_address < MIN_KERNEL_LOAD_ADDR) + kbuf.buf_min = MIN_KERNEL_LOAD_ADDR; + else + kbuf.buf_min = header->pref_address; kbuf.mem = KEXEC_BUF_MEM_UNKNOWN; ret = kexec_add_buffer(&kbuf); if (ret) diff --git a/arch/x86/kernel/kprobes/opt.c b/arch/x86/kernel/kprobes/opt.c index 517821b48391..36d6809c6c9e 100644 --- a/arch/x86/kernel/kprobes/opt.c +++ b/arch/x86/kernel/kprobes/opt.c @@ -324,7 +324,7 @@ static int can_optimize(unsigned long paddr) * However, the kernel built with retpolines or IBT has jump * tables disabled so the check can be skipped altogether. */ - if (!IS_ENABLED(CONFIG_RETPOLINE) && + if (!IS_ENABLED(CONFIG_MITIGATION_RETPOLINE) && !IS_ENABLED(CONFIG_X86_KERNEL_IBT) && insn_is_indirect_jump(&insn)) return 0; diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c index dfe9945b9bec..101a7c1bf200 100644 --- a/arch/x86/kernel/kvm.c +++ b/arch/x86/kernel/kvm.c @@ -434,7 +434,8 @@ static void __init sev_map_percpu_data(void) { int cpu; - if (!cc_platform_has(CC_ATTR_GUEST_MEM_ENCRYPT)) + if (cc_vendor != CC_VENDOR_AMD || + !cc_platform_has(CC_ATTR_GUEST_MEM_ENCRYPT)) return; for_each_possible_cpu(cpu) { @@ -829,7 +830,7 @@ static void __init kvm_guest_init(void) if (kvm_para_has_feature(KVM_FEATURE_ASYNC_PF_INT) && kvmapf) { static_branch_enable(&kvm_async_pf_enabled); - alloc_intr_gate(HYPERVISOR_CALLBACK_VECTOR, asm_sysvec_kvm_asyncpf_interrupt); + sysvec_install(HYPERVISOR_CALLBACK_VECTOR, sysvec_kvm_asyncpf_interrupt); } #ifdef CONFIG_SMP diff --git a/arch/x86/kernel/kvmclock.c b/arch/x86/kernel/kvmclock.c index 5bb395551c44..5b2c15214a6b 100644 --- a/arch/x86/kernel/kvmclock.c +++ b/arch/x86/kernel/kvmclock.c @@ -154,15 +154,15 @@ static int kvm_cs_enable(struct clocksource *cs) return 0; } -struct clocksource kvm_clock = { +static struct clocksource kvm_clock = { .name = "kvm-clock", .read = kvm_clock_get_cycles, .rating = 400, .mask = CLOCKSOURCE_MASK(64), .flags = CLOCK_SOURCE_IS_CONTINUOUS, + .id = CSID_X86_KVM_CLK, .enable = kvm_cs_enable, }; -EXPORT_SYMBOL_GPL(kvm_clock); static void kvm_register_clock(char *txt) { diff --git a/arch/x86/kernel/ldt.c b/arch/x86/kernel/ldt.c index 7a814b41402d..0f19ef355f5f 100644 --- a/arch/x86/kernel/ldt.c +++ b/arch/x86/kernel/ldt.c @@ -184,7 +184,7 @@ static struct ldt_struct *alloc_ldt_struct(unsigned int num_entries) return new_ldt; } -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION static void do_sanity_check(struct mm_struct *mm, bool had_kernel_mapping, @@ -377,7 +377,7 @@ static void unmap_ldt_struct(struct mm_struct *mm, struct ldt_struct *ldt) flush_tlb_mm_range(mm, va, va + nr_pages * PAGE_SIZE, PAGE_SHIFT, false); } -#else /* !CONFIG_PAGE_TABLE_ISOLATION */ +#else /* !CONFIG_MITIGATION_PAGE_TABLE_ISOLATION */ static int map_ldt_struct(struct mm_struct *mm, struct ldt_struct *ldt, int slot) @@ -388,11 +388,11 @@ map_ldt_struct(struct mm_struct *mm, struct ldt_struct *ldt, int slot) static void unmap_ldt_struct(struct mm_struct *mm, struct ldt_struct *ldt) { } -#endif /* CONFIG_PAGE_TABLE_ISOLATION */ +#endif /* CONFIG_MITIGATION_PAGE_TABLE_ISOLATION */ static void free_ldt_pgtables(struct mm_struct *mm) { -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION struct mmu_gather tlb; unsigned long start = LDT_BASE_ADDR; unsigned long end = LDT_END_ADDR; diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c index b223922248e9..1ccd30c8246f 100644 --- a/arch/x86/kernel/mpparse.c +++ b/arch/x86/kernel/mpparse.c @@ -36,6 +36,8 @@ * Checksum an MP configuration block. */ +static unsigned int num_procs __initdata; + static int __init mpf_checksum(unsigned char *mp, int len) { int sum = 0; @@ -50,16 +52,15 @@ static void __init MP_processor_info(struct mpc_cpu *m) { char *bootup_cpu = ""; - if (!(m->cpuflag & CPU_ENABLED)) { - disabled_cpus++; + topology_register_apic(m->apicid, CPU_ACPIID_INVALID, m->cpuflag & CPU_ENABLED); + if (!(m->cpuflag & CPU_ENABLED)) return; - } if (m->cpuflag & CPU_BOOTPROCESSOR) bootup_cpu = " (Bootup-CPU)"; pr_info("Processor #%d%s\n", m->apicid, bootup_cpu); - generic_processor_info(m->apicid); + num_procs++; } #ifdef CONFIG_X86_IO_APIC @@ -236,9 +237,9 @@ static int __init smp_read_mpc(struct mpc_table *mpc, unsigned early) } } - if (!num_processors) + if (!num_procs && !acpi_lapic) pr_err("MPTABLE: no processors registered!\n"); - return num_processors; + return num_procs || acpi_lapic; } #ifdef CONFIG_X86_IO_APIC @@ -473,7 +474,7 @@ static int __init check_physptr(struct mpf_intel *mpf, unsigned int early) /* * Scan the memory blocks for an SMP configuration block. */ -void __init default_get_smp_config(unsigned int early) +static __init void mpparse_get_smp_config(unsigned int early) { struct mpf_intel *mpf; @@ -529,8 +530,8 @@ void __init default_get_smp_config(unsigned int early) } else BUG(); - if (!early) - pr_info("Processors: %d\n", num_processors); + if (!early && !acpi_lapic) + pr_info("Processors: %d\n", num_procs); /* * Only use the first configuration found. */ @@ -538,6 +539,16 @@ out: early_memunmap(mpf, sizeof(*mpf)); } +void __init mpparse_parse_early_smp_config(void) +{ + mpparse_get_smp_config(true); +} + +void __init mpparse_parse_smp_config(void) +{ + mpparse_get_smp_config(false); +} + static void __init smp_reserve_memory(struct mpf_intel *mpf) { memblock_reserve(mpf->physptr, get_mpc_size(mpf->physptr)); @@ -587,7 +598,7 @@ static int __init smp_scan_config(unsigned long base, unsigned long length) return ret; } -void __init default_find_smp_config(void) +void __init mpparse_find_mptable(void) { unsigned int address; diff --git a/arch/x86/kernel/nmi.c b/arch/x86/kernel/nmi.c index 17e955ab69fe..9a5b372c706f 100644 --- a/arch/x86/kernel/nmi.c +++ b/arch/x86/kernel/nmi.c @@ -35,6 +35,7 @@ #include <asm/nospec-branch.h> #include <asm/microcode.h> #include <asm/sev.h> +#include <asm/fred.h> #define CREATE_TRACE_POINTS #include <trace/events/nmi.h> @@ -303,13 +304,13 @@ unknown_nmi_error(unsigned char reason, struct pt_regs *regs) __this_cpu_add(nmi_stats.unknown, 1); - pr_emerg("Uhhuh. NMI received for unknown reason %02x on CPU %d.\n", - reason, smp_processor_id()); + pr_emerg_ratelimited("Uhhuh. NMI received for unknown reason %02x on CPU %d.\n", + reason, smp_processor_id()); if (unknown_nmi_panic || panic_on_unrecovered_nmi) nmi_panic(regs, "NMI: Not continuing"); - pr_emerg("Dazed and confused, but trying to continue\n"); + pr_emerg_ratelimited("Dazed and confused, but trying to continue\n"); } NOKPROBE_SYMBOL(unknown_nmi_error); @@ -502,7 +503,7 @@ DEFINE_IDTENTRY_RAW(exc_nmi) if (IS_ENABLED(CONFIG_NMI_CHECK_CPU)) raw_atomic_long_inc(&nsp->idt_calls); - if (IS_ENABLED(CONFIG_SMP) && arch_cpu_is_offline(smp_processor_id())) { + if (arch_cpu_is_offline(smp_processor_id())) { if (microcode_nmi_handler_enabled()) microcode_offline_nmi_handler(); return; @@ -563,9 +564,6 @@ nmi_restart: } if (this_cpu_dec_return(nmi_state)) goto nmi_restart; - - if (user_mode(regs)) - mds_user_clear_cpu_buffers(); } #if IS_ENABLED(CONFIG_KVM_INTEL) @@ -639,7 +637,7 @@ void nmi_backtrace_stall_check(const struct cpumask *btp) msgp = nmi_check_stall_msg[idx]; if (nsp->idt_ignored_snap != READ_ONCE(nsp->idt_ignored) && (idx & 0x1)) modp = ", but OK because ignore_nmis was set"; - if (nmi_seq & ~0x1) + if (nmi_seq & 0x1) msghp = " (CPU currently in NMI handler function)"; else if (nsp->idt_nmi_seq_snap + 1 == nmi_seq) msghp = " (CPU exited one NMI handler function)"; @@ -651,6 +649,47 @@ void nmi_backtrace_stall_check(const struct cpumask *btp) #endif +#ifdef CONFIG_X86_FRED +/* + * With FRED, CR2/DR6 is pushed to #PF/#DB stack frame during FRED + * event delivery, i.e., there is no problem of transient states. + * And NMI unblocking only happens when the stack frame indicates + * that so should happen. + * + * Thus, the NMI entry stub for FRED is really straightforward and + * as simple as most exception handlers. As such, #DB is allowed + * during NMI handling. + */ +DEFINE_FREDENTRY_NMI(exc_nmi) +{ + irqentry_state_t irq_state; + + if (arch_cpu_is_offline(smp_processor_id())) { + if (microcode_nmi_handler_enabled()) + microcode_offline_nmi_handler(); + return; + } + + /* + * Save CR2 for eventual restore to cover the case where the NMI + * hits the VMENTER/VMEXIT region where guest CR2 is life. This + * prevents guest state corruption in case that the NMI handler + * takes a page fault. + */ + this_cpu_write(nmi_cr2, read_cr2()); + + irq_state = irqentry_nmi_enter(regs); + + inc_irq_stat(__nmi_count); + default_do_nmi(regs); + + irqentry_nmi_exit(regs, irq_state); + + if (unlikely(this_cpu_read(nmi_cr2) != read_cr2())) + write_cr2(this_cpu_read(nmi_cr2)); +} +#endif + void stop_nmi(void) { ignore_nmis++; diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c index ab49ade31b0d..b8441147eb5e 100644 --- a/arch/x86/kernel/process.c +++ b/arch/x86/kernel/process.c @@ -846,31 +846,6 @@ void __noreturn stop_this_cpu(void *dummy) } /* - * AMD Erratum 400 aware idle routine. We handle it the same way as C3 power - * states (local apic timer and TSC stop). - * - * XXX this function is completely buggered vs RCU and tracing. - */ -static void amd_e400_idle(void) -{ - /* - * We cannot use static_cpu_has_bug() here because X86_BUG_AMD_APIC_C1E - * gets set after static_cpu_has() places have been converted via - * alternatives. - */ - if (!boot_cpu_has_bug(X86_BUG_AMD_APIC_C1E)) { - default_idle(); - return; - } - - tick_broadcast_enter(); - - default_idle(); - - tick_broadcast_exit(); -} - -/* * Prefer MWAIT over HALT if MWAIT is supported, MWAIT_CPUID leaf * exists and whenever MONITOR/MWAIT extensions are present there is at * least one C1 substate. @@ -878,21 +853,22 @@ static void amd_e400_idle(void) * Do not prefer MWAIT if MONITOR instruction has a bug or idle=nomwait * is passed to kernel commandline parameter. */ -static int prefer_mwait_c1_over_halt(const struct cpuinfo_x86 *c) +static __init bool prefer_mwait_c1_over_halt(void) { + const struct cpuinfo_x86 *c = &boot_cpu_data; u32 eax, ebx, ecx, edx; - /* User has disallowed the use of MWAIT. Fallback to HALT */ - if (boot_option_idle_override == IDLE_NOMWAIT) - return 0; + /* If override is enforced on the command line, fall back to HALT. */ + if (boot_option_idle_override != IDLE_NO_OVERRIDE) + return false; /* MWAIT is not supported on this platform. Fallback to HALT */ if (!cpu_has(c, X86_FEATURE_MWAIT)) - return 0; + return false; - /* Monitor has a bug. Fallback to HALT */ - if (boot_cpu_has_bug(X86_BUG_MONITOR)) - return 0; + /* Monitor has a bug or APIC stops in C1E. Fallback to HALT */ + if (boot_cpu_has_bug(X86_BUG_MONITOR) || boot_cpu_has_bug(X86_BUG_AMD_APIC_C1E)) + return false; cpuid(CPUID_MWAIT_LEAF, &eax, &ebx, &ecx, &edx); @@ -901,13 +877,13 @@ static int prefer_mwait_c1_over_halt(const struct cpuinfo_x86 *c) * with EAX=0, ECX=0. */ if (!(ecx & CPUID5_ECX_EXTENSIONS_SUPPORTED)) - return 1; + return true; /* * If MWAIT extensions are available, there should be at least one * MWAIT C1 substate present. */ - return (edx & MWAIT_C1_SUBSTATE_MASK); + return !!(edx & MWAIT_C1_SUBSTATE_MASK); } /* @@ -933,26 +909,27 @@ static __cpuidle void mwait_idle(void) __current_clr_polling(); } -void select_idle_routine(const struct cpuinfo_x86 *c) +void __init select_idle_routine(void) { -#ifdef CONFIG_SMP - if (boot_option_idle_override == IDLE_POLL && smp_num_siblings > 1) - pr_warn_once("WARNING: polling idle and HT enabled, performance may degrade\n"); -#endif - if (x86_idle_set() || boot_option_idle_override == IDLE_POLL) + if (boot_option_idle_override == IDLE_POLL) { + if (IS_ENABLED(CONFIG_SMP) && __max_threads_per_core > 1) + pr_warn_once("WARNING: polling idle and HT enabled, performance may degrade\n"); + return; + } + + /* Required to guard against xen_set_default_idle() */ + if (x86_idle_set()) return; - if (boot_cpu_has_bug(X86_BUG_AMD_E400)) { - pr_info("using AMD E400 aware idle routine\n"); - static_call_update(x86_idle, amd_e400_idle); - } else if (prefer_mwait_c1_over_halt(c)) { + if (prefer_mwait_c1_over_halt()) { pr_info("using mwait in idle threads\n"); static_call_update(x86_idle, mwait_idle); } else if (cpu_feature_enabled(X86_FEATURE_TDX_GUEST)) { pr_info("using TDX aware idle routine\n"); static_call_update(x86_idle, tdx_safe_halt); - } else + } else { static_call_update(x86_idle, default_idle); + } } void amd_e400_c1e_apic_setup(void) @@ -985,7 +962,10 @@ void __init arch_post_acpi_subsys_init(void) if (!boot_cpu_has(X86_FEATURE_NONSTOP_TSC)) mark_tsc_unstable("TSC halt in AMD C1E"); - pr_info("System has AMD C1E enabled\n"); + + if (IS_ENABLED(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST_IDLE)) + static_branch_enable(&arch_needs_tick_broadcast); + pr_info("System has AMD C1E erratum E400. Workaround enabled.\n"); } static int __init idle_setup(char *str) @@ -998,24 +978,14 @@ static int __init idle_setup(char *str) boot_option_idle_override = IDLE_POLL; cpu_idle_poll_ctrl(true); } else if (!strcmp(str, "halt")) { - /* - * When the boot option of idle=halt is added, halt is - * forced to be used for CPU idle. In such case CPU C2/C3 - * won't be used again. - * To continue to load the CPU idle driver, don't touch - * the boot_option_idle_override. - */ - static_call_update(x86_idle, default_idle); + /* 'idle=halt' HALT for idle. C-states are disabled. */ boot_option_idle_override = IDLE_HALT; } else if (!strcmp(str, "nomwait")) { - /* - * If the boot option of "idle=nomwait" is added, - * it means that mwait will be disabled for CPU C1/C2/C3 - * states. - */ + /* 'idle=nomwait' disables MWAIT for idle */ boot_option_idle_override = IDLE_NOMWAIT; - } else - return -1; + } else { + return -EINVAL; + } return 0; } @@ -1030,7 +1000,10 @@ unsigned long arch_align_stack(unsigned long sp) unsigned long arch_randomize_brk(struct mm_struct *mm) { - return randomize_page(mm->brk, 0x02000000); + if (mmap_is_ia32()) + return randomize_page(mm->brk, SZ_32M); + + return randomize_page(mm->brk, SZ_1G); } /* diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c index 708c87b88cc1..0917c7f25720 100644 --- a/arch/x86/kernel/process_32.c +++ b/arch/x86/kernel/process_32.c @@ -156,13 +156,12 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p) { struct thread_struct *prev = &prev_p->thread, *next = &next_p->thread; - struct fpu *prev_fpu = &prev->fpu; int cpu = smp_processor_id(); /* never put a printk in __switch_to... printk() calls wake_up*() indirectly */ - if (!test_thread_flag(TIF_NEED_FPU_LOAD)) - switch_fpu_prepare(prev_fpu, cpu); + if (!test_tsk_thread_flag(prev_p, TIF_NEED_FPU_LOAD)) + switch_fpu_prepare(prev_p, cpu); /* * Save away %gs. No need to save %fs, as it was saved on the @@ -209,7 +208,7 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p) raw_cpu_write(pcpu_hot.current_task, next_p); - switch_fpu_finish(); + switch_fpu_finish(next_p); /* Load the Intel cache allocation PQR MSR. */ resctrl_sched_in(next_p); diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c index 33b268747bb7..7062b84dd467 100644 --- a/arch/x86/kernel/process_64.c +++ b/arch/x86/kernel/process_64.c @@ -56,6 +56,7 @@ #include <asm/resctrl.h> #include <asm/unistd.h> #include <asm/fsgsbase.h> +#include <asm/fred.h> #ifdef CONFIG_IA32_EMULATION /* Not included via unistd.h */ #include <asm/unistd_32_ia32.h> @@ -117,7 +118,7 @@ void __show_regs(struct pt_regs *regs, enum show_regs_mode mode, printk("%sFS: %016lx(%04x) GS:%016lx(%04x) knlGS:%016lx\n", log_lvl, fs, fsindex, gs, gsindex, shadowgs); - printk("%sCS: %04lx DS: %04x ES: %04x CR0: %016lx\n", + printk("%sCS: %04x DS: %04x ES: %04x CR0: %016lx\n", log_lvl, regs->cs, ds, es, cr0); printk("%sCR2: %016lx CR3: %016lx CR4: %016lx\n", log_lvl, cr2, cr3, cr4); @@ -166,7 +167,29 @@ static noinstr unsigned long __rdgsbase_inactive(void) lockdep_assert_irqs_disabled(); - if (!cpu_feature_enabled(X86_FEATURE_XENPV)) { + /* + * SWAPGS is no longer needed thus NOT allowed with FRED because + * FRED transitions ensure that an operating system can _always_ + * operate with its own GS base address: + * - For events that occur in ring 3, FRED event delivery swaps + * the GS base address with the IA32_KERNEL_GS_BASE MSR. + * - ERETU (the FRED transition that returns to ring 3) also swaps + * the GS base address with the IA32_KERNEL_GS_BASE MSR. + * + * And the operating system can still setup the GS segment for a + * user thread without the need of loading a user thread GS with: + * - Using LKGS, available with FRED, to modify other attributes + * of the GS segment without compromising its ability always to + * operate with its own GS base address. + * - Accessing the GS segment base address for a user thread as + * before using RDMSR or WRMSR on the IA32_KERNEL_GS_BASE MSR. + * + * Note, LKGS loads the GS base address into the IA32_KERNEL_GS_BASE + * MSR instead of the GS segment’s descriptor cache. As such, the + * operating system never changes its runtime GS base address. + */ + if (!cpu_feature_enabled(X86_FEATURE_FRED) && + !cpu_feature_enabled(X86_FEATURE_XENPV)) { native_swapgs(); gsbase = rdgsbase(); native_swapgs(); @@ -191,7 +214,8 @@ static noinstr void __wrgsbase_inactive(unsigned long gsbase) { lockdep_assert_irqs_disabled(); - if (!cpu_feature_enabled(X86_FEATURE_XENPV)) { + if (!cpu_feature_enabled(X86_FEATURE_FRED) && + !cpu_feature_enabled(X86_FEATURE_XENPV)) { native_swapgs(); wrgsbase(gsbase); native_swapgs(); @@ -505,7 +529,7 @@ void x86_gsbase_write_task(struct task_struct *task, unsigned long gsbase) static void start_thread_common(struct pt_regs *regs, unsigned long new_ip, unsigned long new_sp, - unsigned int _cs, unsigned int _ss, unsigned int _ds) + u16 _cs, u16 _ss, u16 _ds) { WARN_ON_ONCE(regs != current_pt_regs()); @@ -522,11 +546,36 @@ start_thread_common(struct pt_regs *regs, unsigned long new_ip, loadsegment(ds, _ds); load_gs_index(0); - regs->ip = new_ip; - regs->sp = new_sp; - regs->cs = _cs; - regs->ss = _ss; - regs->flags = X86_EFLAGS_IF; + regs->ip = new_ip; + regs->sp = new_sp; + regs->csx = _cs; + regs->ssx = _ss; + /* + * Allow single-step trap and NMI when starting a new task, thus + * once the new task enters user space, single-step trap and NMI + * are both enabled immediately. + * + * Entering a new task is logically speaking a return from a + * system call (exec, fork, clone, etc.). As such, if ptrace + * enables single stepping a single step exception should be + * allowed to trigger immediately upon entering user space. + * This is not optional. + * + * NMI should *never* be disabled in user space. As such, this + * is an optional, opportunistic way to catch errors. + * + * Paranoia: High-order 48 bits above the lowest 16 bit SS are + * discarded by the legacy IRET instruction on all Intel, AMD, + * and Cyrix/Centaur/VIA CPUs, thus can be set unconditionally, + * even when FRED is not enabled. But we choose the safer side + * to use these bits only when FRED is enabled. + */ + if (cpu_feature_enabled(X86_FEATURE_FRED)) { + regs->fred_ss.swevent = true; + regs->fred_ss.nmi = true; + } + + regs->flags = X86_EFLAGS_IF | X86_EFLAGS_FIXED; } void @@ -562,14 +611,13 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p) { struct thread_struct *prev = &prev_p->thread; struct thread_struct *next = &next_p->thread; - struct fpu *prev_fpu = &prev->fpu; int cpu = smp_processor_id(); WARN_ON_ONCE(IS_ENABLED(CONFIG_DEBUG_ENTRY) && this_cpu_read(pcpu_hot.hardirq_stack_inuse)); - if (!test_thread_flag(TIF_NEED_FPU_LOAD)) - switch_fpu_prepare(prev_fpu, cpu); + if (!test_tsk_thread_flag(prev_p, TIF_NEED_FPU_LOAD)) + switch_fpu_prepare(prev_p, cpu); /* We must save %fs and %gs before load_TLS() because * %fs and %gs may be cleared by load_TLS(). @@ -623,7 +671,7 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p) raw_cpu_write(pcpu_hot.current_task, next_p); raw_cpu_write(pcpu_hot.top_of_stack, task_top_of_stack(next_p)); - switch_fpu_finish(); + switch_fpu_finish(next_p); /* Reload sp0. */ update_task_stack(next_p); diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 84201071dfac..46d5a8c520ad 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -970,10 +970,8 @@ void __init setup_arch(char **cmdline_p) high_memory = (void *)__va(max_pfn * PAGE_SIZE - 1) + 1; #endif - /* - * Find and reserve possible boot-time SMP configuration: - */ - find_smp_config(); + /* Find and reserve MPTABLE area */ + x86_init.mpparse.find_mptable(); early_alloc_pgt_buf(); @@ -1090,7 +1088,9 @@ void __init setup_arch(char **cmdline_p) early_platform_quirks(); + /* Some platforms need the APIC registered for NUMA configuration */ early_acpi_boot_init(); + x86_init.mpparse.early_parse_smp_cfg(); x86_flattree_get_config(); @@ -1131,24 +1131,19 @@ void __init setup_arch(char **cmdline_p) early_quirks(); - /* - * Read APIC and some other early information from ACPI tables. - */ - acpi_boot_init(); - x86_dtb_init(); + topology_apply_cmdline_limits_early(); /* - * get boot-time SMP configuration: + * Parse SMP configuration. Try ACPI first and then the platform + * specific parser. */ - get_smp_config(); + acpi_boot_init(); + x86_init.mpparse.parse_smp_cfg(); - /* - * Systems w/o ACPI and mptables might not have it mapped the local - * APIC yet, but prefill_possible_map() might need to access it. - */ + /* Last opportunity to detect and map the local APIC */ init_apic_mappings(); - prefill_possible_map(); + topology_init_possible_cpus(); init_cpu_to_node(); init_gi_nodes(); @@ -1211,6 +1206,16 @@ void __init i386_reserve_resources(void) #endif /* CONFIG_X86_32 */ +#ifndef CONFIG_SMP +void __init smp_prepare_boot_cpu(void) +{ + struct cpuinfo_x86 *c = &cpu_data(0); + + *c = boot_cpu_data; + c->initialized = true; +} +#endif + static struct notifier_block kernel_offset_notifier = { .notifier_call = dump_kernel_offset }; diff --git a/arch/x86/kernel/sev-shared.c b/arch/x86/kernel/sev-shared.c index 1d24ec679915..8b04958da5e7 100644 --- a/arch/x86/kernel/sev-shared.c +++ b/arch/x86/kernel/sev-shared.c @@ -9,12 +9,18 @@ * and is included directly into both code-bases. */ +#include <asm/setup_data.h> + #ifndef __BOOT_COMPRESSED -#define error(v) pr_err(v) -#define has_cpuflag(f) boot_cpu_has(f) +#define error(v) pr_err(v) +#define has_cpuflag(f) boot_cpu_has(f) +#define sev_printk(fmt, ...) printk(fmt, ##__VA_ARGS__) +#define sev_printk_rtl(fmt, ...) printk_ratelimited(fmt, ##__VA_ARGS__) #else #undef WARN #define WARN(condition, format...) (!!(condition)) +#define sev_printk(fmt, ...) +#define sev_printk_rtl(fmt, ...) #endif /* I/O parameters for CPUID-related helpers */ @@ -89,7 +95,8 @@ static bool __init sev_es_check_cpu_features(void) return true; } -static void __noreturn sev_es_terminate(unsigned int set, unsigned int reason) +static void __head __noreturn +sev_es_terminate(unsigned int set, unsigned int reason) { u64 val = GHCB_MSR_TERM_REQ; @@ -326,13 +333,7 @@ static int sev_cpuid_hv(struct ghcb *ghcb, struct es_em_ctxt *ctxt, struct cpuid */ static const struct snp_cpuid_table *snp_cpuid_get_table(void) { - void *ptr; - - asm ("lea cpuid_table_copy(%%rip), %0" - : "=r" (ptr) - : "p" (&cpuid_table_copy)); - - return ptr; + return &RIP_REL_REF(cpuid_table_copy); } /* @@ -391,7 +392,7 @@ static u32 snp_cpuid_calc_xsave_size(u64 xfeatures_en, bool compacted) return xsave_size; } -static bool +static bool __head snp_cpuid_get_validated_func(struct cpuid_leaf *leaf) { const struct snp_cpuid_table *cpuid_table = snp_cpuid_get_table(); @@ -528,7 +529,8 @@ static int snp_cpuid_postprocess(struct ghcb *ghcb, struct es_em_ctxt *ctxt, * Returns -EOPNOTSUPP if feature not enabled. Any other non-zero return value * should be treated as fatal by caller. */ -static int snp_cpuid(struct ghcb *ghcb, struct es_em_ctxt *ctxt, struct cpuid_leaf *leaf) +static int __head +snp_cpuid(struct ghcb *ghcb, struct es_em_ctxt *ctxt, struct cpuid_leaf *leaf) { const struct snp_cpuid_table *cpuid_table = snp_cpuid_get_table(); @@ -556,9 +558,9 @@ static int snp_cpuid(struct ghcb *ghcb, struct es_em_ctxt *ctxt, struct cpuid_le leaf->eax = leaf->ebx = leaf->ecx = leaf->edx = 0; /* Skip post-processing for out-of-range zero leafs. */ - if (!(leaf->fn <= cpuid_std_range_max || - (leaf->fn >= 0x40000000 && leaf->fn <= cpuid_hyp_range_max) || - (leaf->fn >= 0x80000000 && leaf->fn <= cpuid_ext_range_max))) + if (!(leaf->fn <= RIP_REL_REF(cpuid_std_range_max) || + (leaf->fn >= 0x40000000 && leaf->fn <= RIP_REL_REF(cpuid_hyp_range_max)) || + (leaf->fn >= 0x80000000 && leaf->fn <= RIP_REL_REF(cpuid_ext_range_max)))) return 0; } @@ -570,10 +572,11 @@ static int snp_cpuid(struct ghcb *ghcb, struct es_em_ctxt *ctxt, struct cpuid_le * page yet, so it only supports the MSR based communication with the * hypervisor and only the CPUID exit-code. */ -void __init do_vc_no_ghcb(struct pt_regs *regs, unsigned long exit_code) +void __head do_vc_no_ghcb(struct pt_regs *regs, unsigned long exit_code) { unsigned int subfn = lower_bits(regs->cx, 32); unsigned int fn = lower_bits(regs->ax, 32); + u16 opcode = *(unsigned short *)regs->ip; struct cpuid_leaf leaf; int ret; @@ -581,6 +584,10 @@ void __init do_vc_no_ghcb(struct pt_regs *regs, unsigned long exit_code) if (exit_code != SVM_EXIT_CPUID) goto fail; + /* Is it really a CPUID insn? */ + if (opcode != 0xa20f) + goto fail; + leaf.fn = fn; leaf.subfn = subfn; @@ -1016,7 +1023,8 @@ struct cc_setup_data { * Search for a Confidential Computing blob passed in as a setup_data entry * via the Linux Boot Protocol. */ -static struct cc_blob_sev_info *find_cc_blob_setup_data(struct boot_params *bp) +static __head +struct cc_blob_sev_info *find_cc_blob_setup_data(struct boot_params *bp) { struct cc_setup_data *sd = NULL; struct setup_data *hdr; @@ -1043,7 +1051,7 @@ static struct cc_blob_sev_info *find_cc_blob_setup_data(struct boot_params *bp) * mapping needs to be updated in sync with all the changes to virtual memory * layout and related mapping facilities throughout the boot process. */ -static void __init setup_cpuid_table(const struct cc_blob_sev_info *cc_info) +static void __head setup_cpuid_table(const struct cc_blob_sev_info *cc_info) { const struct snp_cpuid_table *cpuid_table_fw, *cpuid_table; int i; @@ -1063,11 +1071,11 @@ static void __init setup_cpuid_table(const struct cc_blob_sev_info *cc_info) const struct snp_cpuid_fn *fn = &cpuid_table->fn[i]; if (fn->eax_in == 0x0) - cpuid_std_range_max = fn->eax; + RIP_REL_REF(cpuid_std_range_max) = fn->eax; else if (fn->eax_in == 0x40000000) - cpuid_hyp_range_max = fn->eax; + RIP_REL_REF(cpuid_hyp_range_max) = fn->eax; else if (fn->eax_in == 0x80000000) - cpuid_ext_range_max = fn->eax; + RIP_REL_REF(cpuid_ext_range_max) = fn->eax; } } @@ -1170,3 +1178,92 @@ static int vmgexit_psc(struct ghcb *ghcb, struct snp_psc_desc *desc) out: return ret; } + +static enum es_result vc_check_opcode_bytes(struct es_em_ctxt *ctxt, + unsigned long exit_code) +{ + unsigned int opcode = (unsigned int)ctxt->insn.opcode.value; + u8 modrm = ctxt->insn.modrm.value; + + switch (exit_code) { + + case SVM_EXIT_IOIO: + case SVM_EXIT_NPF: + /* handled separately */ + return ES_OK; + + case SVM_EXIT_CPUID: + if (opcode == 0xa20f) + return ES_OK; + break; + + case SVM_EXIT_INVD: + if (opcode == 0x080f) + return ES_OK; + break; + + case SVM_EXIT_MONITOR: + if (opcode == 0x010f && modrm == 0xc8) + return ES_OK; + break; + + case SVM_EXIT_MWAIT: + if (opcode == 0x010f && modrm == 0xc9) + return ES_OK; + break; + + case SVM_EXIT_MSR: + /* RDMSR */ + if (opcode == 0x320f || + /* WRMSR */ + opcode == 0x300f) + return ES_OK; + break; + + case SVM_EXIT_RDPMC: + if (opcode == 0x330f) + return ES_OK; + break; + + case SVM_EXIT_RDTSC: + if (opcode == 0x310f) + return ES_OK; + break; + + case SVM_EXIT_RDTSCP: + if (opcode == 0x010f && modrm == 0xf9) + return ES_OK; + break; + + case SVM_EXIT_READ_DR7: + if (opcode == 0x210f && + X86_MODRM_REG(ctxt->insn.modrm.value) == 7) + return ES_OK; + break; + + case SVM_EXIT_VMMCALL: + if (opcode == 0x010f && modrm == 0xd9) + return ES_OK; + + break; + + case SVM_EXIT_WRITE_DR7: + if (opcode == 0x230f && + X86_MODRM_REG(ctxt->insn.modrm.value) == 7) + return ES_OK; + break; + + case SVM_EXIT_WBINVD: + if (opcode == 0x90f) + return ES_OK; + break; + + default: + break; + } + + sev_printk(KERN_ERR "Wrong/unhandled opcode bytes: 0x%x, exit_code: 0x%lx, rIP: 0x%lx\n", + opcode, exit_code, ctxt->regs->ip); + + return ES_UNSUPPORTED; +} diff --git a/arch/x86/kernel/sev.c b/arch/x86/kernel/sev.c index c67285824e82..b59b09c2f284 100644 --- a/arch/x86/kernel/sev.c +++ b/arch/x86/kernel/sev.c @@ -25,6 +25,7 @@ #include <linux/psp-sev.h> #include <uapi/linux/sev-guest.h> +#include <asm/init.h> #include <asm/cpu_entry_area.h> #include <asm/stacktrace.h> #include <asm/sev.h> @@ -59,6 +60,25 @@ #define AP_INIT_CR0_DEFAULT 0x60000010 #define AP_INIT_MXCSR_DEFAULT 0x1f80 +static const char * const sev_status_feat_names[] = { + [MSR_AMD64_SEV_ENABLED_BIT] = "SEV", + [MSR_AMD64_SEV_ES_ENABLED_BIT] = "SEV-ES", + [MSR_AMD64_SEV_SNP_ENABLED_BIT] = "SEV-SNP", + [MSR_AMD64_SNP_VTOM_BIT] = "vTom", + [MSR_AMD64_SNP_REFLECT_VC_BIT] = "ReflectVC", + [MSR_AMD64_SNP_RESTRICTED_INJ_BIT] = "RI", + [MSR_AMD64_SNP_ALT_INJ_BIT] = "AI", + [MSR_AMD64_SNP_DEBUG_SWAP_BIT] = "DebugSwap", + [MSR_AMD64_SNP_PREVENT_HOST_IBS_BIT] = "NoHostIBS", + [MSR_AMD64_SNP_BTB_ISOLATION_BIT] = "BTBIsol", + [MSR_AMD64_SNP_VMPL_SSS_BIT] = "VmplSSS", + [MSR_AMD64_SNP_SECURE_TSC_BIT] = "SecureTSC", + [MSR_AMD64_SNP_VMGEXIT_PARAM_BIT] = "VMGExitParam", + [MSR_AMD64_SNP_IBS_VIRT_BIT] = "IBSVirt", + [MSR_AMD64_SNP_VMSA_REG_PROT_BIT] = "VMSARegProt", + [MSR_AMD64_SNP_SMT_PROT_BIT] = "SMTProt", +}; + /* For early boot hypervisor communication in SEV-ES enabled guests */ static struct ghcb boot_ghcb_page __bss_decrypted __aligned(PAGE_SIZE); @@ -682,8 +702,9 @@ static u64 __init get_jump_table_addr(void) return ret; } -static void early_set_pages_state(unsigned long vaddr, unsigned long paddr, - unsigned long npages, enum psc_op op) +static void __head +early_set_pages_state(unsigned long vaddr, unsigned long paddr, + unsigned long npages, enum psc_op op) { unsigned long paddr_end; u64 val; @@ -739,7 +760,7 @@ e_term: sev_es_terminate(SEV_TERM_SET_LINUX, GHCB_TERM_PSC); } -void __init early_snp_set_memory_private(unsigned long vaddr, unsigned long paddr, +void __head early_snp_set_memory_private(unsigned long vaddr, unsigned long paddr, unsigned long npages) { /* @@ -748,7 +769,7 @@ void __init early_snp_set_memory_private(unsigned long vaddr, unsigned long padd * This eliminates worries about jump tables or checking boot_cpu_data * in the cc_platform_has() function. */ - if (!(sev_status & MSR_AMD64_SEV_SNP_ENABLED)) + if (!(RIP_REL_REF(sev_status) & MSR_AMD64_SEV_SNP_ENABLED)) return; /* @@ -767,7 +788,7 @@ void __init early_snp_set_memory_shared(unsigned long vaddr, unsigned long paddr * This eliminates worries about jump tables or checking boot_cpu_data * in the cc_platform_has() function. */ - if (!(sev_status & MSR_AMD64_SEV_SNP_ENABLED)) + if (!(RIP_REL_REF(sev_status) & MSR_AMD64_SEV_SNP_ENABLED)) return; /* Ask hypervisor to mark the memory pages shared in the RMP table. */ @@ -1752,7 +1773,10 @@ static enum es_result vc_handle_exitcode(struct es_em_ctxt *ctxt, struct ghcb *ghcb, unsigned long exit_code) { - enum es_result result; + enum es_result result = vc_check_opcode_bytes(ctxt, exit_code); + + if (result != ES_OK) + return result; switch (exit_code) { case SVM_EXIT_READ_DR7: @@ -2059,7 +2083,7 @@ fail: * * Scan for the blob in that order. */ -static __init struct cc_blob_sev_info *find_cc_blob(struct boot_params *bp) +static __head struct cc_blob_sev_info *find_cc_blob(struct boot_params *bp) { struct cc_blob_sev_info *cc_info; @@ -2085,7 +2109,7 @@ found_cc_info: return cc_info; } -bool __init snp_init(struct boot_params *bp) +bool __head snp_init(struct boot_params *bp) { struct cc_blob_sev_info *cc_info; @@ -2107,7 +2131,7 @@ bool __init snp_init(struct boot_params *bp) return true; } -void __init __noreturn snp_abort(void) +void __head __noreturn snp_abort(void) { sev_es_terminate(SEV_TERM_SET_GEN, GHCB_SNP_UNSUPPORTED); } @@ -2262,3 +2286,29 @@ static int __init snp_init_platform_device(void) return 0; } device_initcall(snp_init_platform_device); + +void kdump_sev_callback(void) +{ + /* + * Do wbinvd() on remote CPUs when SNP is enabled in order to + * safely do SNP_SHUTDOWN on the local CPU. + */ + if (cpu_feature_enabled(X86_FEATURE_SEV_SNP)) + wbinvd(); +} + +void sev_show_status(void) +{ + int i; + + pr_info("Status: "); + for (i = 0; i < MSR_AMD64_SNP_RESV_BIT; i++) { + if (sev_status & BIT_ULL(i)) { + if (!sev_status_feat_names[i]) + continue; + + pr_cont("%s ", sev_status_feat_names[i]); + } + } + pr_cont("\n"); +} diff --git a/arch/x86/kernel/sev_verify_cbit.S b/arch/x86/kernel/sev_verify_cbit.S index 3355e27c69eb..1ab65f6c6ae7 100644 --- a/arch/x86/kernel/sev_verify_cbit.S +++ b/arch/x86/kernel/sev_verify_cbit.S @@ -77,7 +77,7 @@ SYM_FUNC_START(sev_verify_cbit) * The check failed, prevent any forward progress to prevent ROP * attacks, invalidate the stack and go into a hlt loop. */ - xorq %rsp, %rsp + xorl %esp, %esp subq $0x1000, %rsp 2: hlt jmp 2b diff --git a/arch/x86/kernel/smp.c b/arch/x86/kernel/smp.c index 96a771f9f930..2908e063d7d8 100644 --- a/arch/x86/kernel/smp.c +++ b/arch/x86/kernel/smp.c @@ -148,14 +148,16 @@ static int register_stop_handler(void) static void native_stop_other_cpus(int wait) { - unsigned int cpu = smp_processor_id(); + unsigned int old_cpu, this_cpu; unsigned long flags, timeout; if (reboot_force) return; /* Only proceed if this is the first CPU to reach this code */ - if (atomic_cmpxchg(&stopping_cpu, -1, cpu) != -1) + old_cpu = -1; + this_cpu = smp_processor_id(); + if (!atomic_try_cmpxchg(&stopping_cpu, &old_cpu, this_cpu)) return; /* For kexec, ensure that offline CPUs are out of MWAIT and in HLT */ @@ -186,7 +188,7 @@ static void native_stop_other_cpus(int wait) * NMIs. */ cpumask_copy(&cpus_stop_mask, cpu_online_mask); - cpumask_clear_cpu(cpu, &cpus_stop_mask); + cpumask_clear_cpu(this_cpu, &cpus_stop_mask); if (!cpumask_empty(&cpus_stop_mask)) { apic_send_IPI_allbutself(REBOOT_VECTOR); @@ -210,6 +212,8 @@ static void native_stop_other_cpus(int wait) * CPUs to stop. */ if (!smp_no_nmi_ipi && !register_stop_handler()) { + unsigned int cpu; + pr_emerg("Shutting down cpus with NMI\n"); for_each_cpu(cpu, &cpus_stop_mask) diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index 3f57ce68a3f1..fe355c89f6c1 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -101,10 +101,6 @@ EXPORT_PER_CPU_SYMBOL(cpu_core_map); DEFINE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_die_map); EXPORT_PER_CPU_SYMBOL(cpu_die_map); -/* Per CPU bogomips and other parameters */ -DEFINE_PER_CPU_READ_MOSTLY(struct cpuinfo_x86, cpu_info); -EXPORT_PER_CPU_SYMBOL(cpu_info); - /* CPUs which are the primary SMT threads */ struct cpumask __cpu_primary_thread_mask __read_mostly; @@ -125,25 +121,6 @@ struct mwait_cpu_dead { */ static DEFINE_PER_CPU_ALIGNED(struct mwait_cpu_dead, mwait_cpu_dead); -/* Logical package management. */ -struct logical_maps { - u32 phys_pkg_id; - u32 phys_die_id; - u32 logical_pkg_id; - u32 logical_die_id; -}; - -/* Temporary workaround until the full topology mechanics is in place */ -static DEFINE_PER_CPU_READ_MOSTLY(struct logical_maps, logical_maps) = { - .phys_pkg_id = U32_MAX, - .phys_die_id = U32_MAX, -}; - -unsigned int __max_logical_packages __read_mostly; -EXPORT_SYMBOL(__max_logical_packages); -static unsigned int logical_packages __read_mostly; -static unsigned int logical_die __read_mostly; - /* Maximum number of SMT threads on any online core */ int __read_mostly __max_smt_threads = 1; @@ -336,103 +313,11 @@ static void notrace start_secondary(void *unused) cpu_startup_entry(CPUHP_AP_ONLINE_IDLE); } -/** - * topology_phys_to_logical_pkg - Map a physical package id to a logical - * @phys_pkg: The physical package id to map - * - * Returns logical package id or -1 if not found - */ -int topology_phys_to_logical_pkg(unsigned int phys_pkg) -{ - int cpu; - - for_each_possible_cpu(cpu) { - if (per_cpu(logical_maps.phys_pkg_id, cpu) == phys_pkg) - return per_cpu(logical_maps.logical_pkg_id, cpu); - } - return -1; -} -EXPORT_SYMBOL(topology_phys_to_logical_pkg); - -/** - * topology_phys_to_logical_die - Map a physical die id to logical - * @die_id: The physical die id to map - * @cur_cpu: The CPU for which the mapping is done - * - * Returns logical die id or -1 if not found - */ -static int topology_phys_to_logical_die(unsigned int die_id, unsigned int cur_cpu) -{ - int cpu, proc_id = cpu_data(cur_cpu).topo.pkg_id; - - for_each_possible_cpu(cpu) { - if (per_cpu(logical_maps.phys_pkg_id, cpu) == proc_id && - per_cpu(logical_maps.phys_die_id, cpu) == die_id) - return per_cpu(logical_maps.logical_die_id, cpu); - } - return -1; -} - -/** - * topology_update_package_map - Update the physical to logical package map - * @pkg: The physical package id as retrieved via CPUID - * @cpu: The cpu for which this is updated - */ -int topology_update_package_map(unsigned int pkg, unsigned int cpu) -{ - int new; - - /* Already available somewhere? */ - new = topology_phys_to_logical_pkg(pkg); - if (new >= 0) - goto found; - - new = logical_packages++; - if (new != pkg) { - pr_info("CPU %u Converting physical %u to logical package %u\n", - cpu, pkg, new); - } -found: - per_cpu(logical_maps.phys_pkg_id, cpu) = pkg; - per_cpu(logical_maps.logical_pkg_id, cpu) = new; - cpu_data(cpu).topo.logical_pkg_id = new; - return 0; -} -/** - * topology_update_die_map - Update the physical to logical die map - * @die: The die id as retrieved via CPUID - * @cpu: The cpu for which this is updated - */ -int topology_update_die_map(unsigned int die, unsigned int cpu) -{ - int new; - - /* Already available somewhere? */ - new = topology_phys_to_logical_die(die, cpu); - if (new >= 0) - goto found; - - new = logical_die++; - if (new != die) { - pr_info("CPU %u Converting physical %u to logical die %u\n", - cpu, die, new); - } -found: - per_cpu(logical_maps.phys_die_id, cpu) = die; - per_cpu(logical_maps.logical_die_id, cpu) = new; - cpu_data(cpu).topo.logical_die_id = new; - return 0; -} - static void __init smp_store_boot_cpu_info(void) { - int id = 0; /* CPU 0 */ - struct cpuinfo_x86 *c = &cpu_data(id); + struct cpuinfo_x86 *c = &cpu_data(0); *c = boot_cpu_data; - c->cpu_index = id; - topology_update_package_map(c->topo.pkg_id, id); - topology_update_die_map(c->topo.die_id, id); c->initialized = true; } @@ -488,6 +373,7 @@ static bool match_smt(struct cpuinfo_x86 *c, struct cpuinfo_x86 *o) if (c->topo.pkg_id == o->topo.pkg_id && c->topo.die_id == o->topo.die_id && + c->topo.amd_node_id == o->topo.amd_node_id && per_cpu_llc_id(cpu1) == per_cpu_llc_id(cpu2)) { if (c->topo.core_id == o->topo.core_id) return topology_sane(c, o, "smt"); @@ -509,10 +395,13 @@ static bool match_smt(struct cpuinfo_x86 *c, struct cpuinfo_x86 *o) static bool match_die(struct cpuinfo_x86 *c, struct cpuinfo_x86 *o) { - if (c->topo.pkg_id == o->topo.pkg_id && - c->topo.die_id == o->topo.die_id) - return true; - return false; + if (c->topo.pkg_id != o->topo.pkg_id || c->topo.die_id != o->topo.die_id) + return false; + + if (cpu_feature_enabled(X86_FEATURE_TOPOEXT) && topology_amd_nodes_per_pkg() > 1) + return c->topo.amd_node_id == o->topo.amd_node_id; + + return true; } static bool match_l2c(struct cpuinfo_x86 *c, struct cpuinfo_x86 *o) @@ -670,8 +559,8 @@ static void __init build_sched_topology(void) void set_cpu_sibling_map(int cpu) { - bool has_smt = smp_num_siblings > 1; - bool has_mp = has_smt || boot_cpu_data.x86_max_cores > 1; + bool has_smt = __max_threads_per_core > 1; + bool has_mp = has_smt || topology_num_cores_per_package() > 1; struct cpuinfo_x86 *c = &cpu_data(cpu); struct cpuinfo_x86 *o; int i, threads; @@ -1068,9 +957,13 @@ int native_kick_ap(unsigned int cpu, struct task_struct *tidle) pr_debug("++++++++++++++++++++=_---CPU UP %u\n", cpu); - if (apicid == BAD_APICID || !physid_isset(apicid, phys_cpu_present_map) || - !apic_id_valid(apicid)) { - pr_err("%s: bad cpu %d\n", __func__, cpu); + if (apicid == BAD_APICID || !apic_id_valid(apicid)) { + pr_err("CPU %u has invalid APIC ID %x. Aborting bringup\n", cpu, apicid); + return -EINVAL; + } + + if (!test_bit(apicid, phys_cpu_present_map)) { + pr_err("CPU %u APIC ID %x is not present. Aborting bringup\n", cpu, apicid); return -EINVAL; } @@ -1139,14 +1032,8 @@ static __init void disable_smp(void) pr_info("SMP disabled\n"); disable_ioapic_support(); + topology_reset_possible_cpus_up(); - init_cpu_present(cpumask_of(0)); - init_cpu_possible(cpumask_of(0)); - - if (smp_found_config) - physid_set_mask_of_physid(boot_cpu_physical_apicid, &phys_cpu_present_map); - else - physid_set_mask_of_physid(0, &phys_cpu_present_map); cpumask_set_cpu(0, topology_sibling_cpumask(0)); cpumask_set_cpu(0, topology_core_cpumask(0)); cpumask_set_cpu(0, topology_die_cpumask(0)); @@ -1187,6 +1074,11 @@ void __init smp_prepare_cpus_common(void) set_cpu_sibling_map(0); } +void __init smp_prepare_boot_cpu(void) +{ + smp_ops.smp_prepare_boot_cpu(); +} + #ifdef CONFIG_X86_64 /* Establish whether parallel bringup can be supported. */ bool __init arch_cpuhp_init_parallel_bringup(void) @@ -1265,102 +1157,16 @@ void __init native_smp_prepare_boot_cpu(void) native_pv_lock_init(); } -void __init calculate_max_logical_packages(void) -{ - int ncpus; - - /* - * Today neither Intel nor AMD support heterogeneous systems so - * extrapolate the boot cpu's data to all packages. - */ - ncpus = cpu_data(0).booted_cores * topology_max_smt_threads(); - __max_logical_packages = DIV_ROUND_UP(total_cpus, ncpus); - pr_info("Max logical packages: %u\n", __max_logical_packages); -} - void __init native_smp_cpus_done(unsigned int max_cpus) { pr_debug("Boot done\n"); - calculate_max_logical_packages(); build_sched_topology(); nmi_selftest(); impress_friends(); cache_aps_init(); } -static int __initdata setup_possible_cpus = -1; -static int __init _setup_possible_cpus(char *str) -{ - get_option(&str, &setup_possible_cpus); - return 0; -} -early_param("possible_cpus", _setup_possible_cpus); - - -/* - * cpu_possible_mask should be static, it cannot change as cpu's - * are onlined, or offlined. The reason is per-cpu data-structures - * are allocated by some modules at init time, and don't expect to - * do this dynamically on cpu arrival/departure. - * cpu_present_mask on the other hand can change dynamically. - * In case when cpu_hotplug is not compiled, then we resort to current - * behaviour, which is cpu_possible == cpu_present. - * - Ashok Raj - * - * Three ways to find out the number of additional hotplug CPUs: - * - If the BIOS specified disabled CPUs in ACPI/mptables use that. - * - The user can overwrite it with possible_cpus=NUM - * - Otherwise don't reserve additional CPUs. - * We do this because additional CPUs waste a lot of memory. - * -AK - */ -__init void prefill_possible_map(void) -{ - int i, possible; - - i = setup_max_cpus ?: 1; - if (setup_possible_cpus == -1) { - possible = num_processors; -#ifdef CONFIG_HOTPLUG_CPU - if (setup_max_cpus) - possible += disabled_cpus; -#else - if (possible > i) - possible = i; -#endif - } else - possible = setup_possible_cpus; - - total_cpus = max_t(int, possible, num_processors + disabled_cpus); - - /* nr_cpu_ids could be reduced via nr_cpus= */ - if (possible > nr_cpu_ids) { - pr_warn("%d Processors exceeds NR_CPUS limit of %u\n", - possible, nr_cpu_ids); - possible = nr_cpu_ids; - } - -#ifdef CONFIG_HOTPLUG_CPU - if (!setup_max_cpus) -#endif - if (possible > i) { - pr_warn("%d Processors exceeds max_cpus limit of %u\n", - possible, setup_max_cpus); - possible = i; - } - - set_nr_cpu_ids(possible); - - pr_info("Allowing %d CPUs, %d hotplug CPUs\n", - possible, max_t(int, possible - num_processors, 0)); - - reset_cpu_possible_mask(); - - for (i = 0; i < possible; i++) - set_cpu_possible(i, true); -} - /* correctly size the local cpu masks */ void __init setup_cpu_local_masks(void) { diff --git a/arch/x86/kernel/static_call.c b/arch/x86/kernel/static_call.c index 77a9316da435..4eefaac64c6c 100644 --- a/arch/x86/kernel/static_call.c +++ b/arch/x86/kernel/static_call.c @@ -172,7 +172,7 @@ void arch_static_call_transform(void *site, void *tramp, void *func, bool tail) } EXPORT_SYMBOL_GPL(arch_static_call_transform); -#ifdef CONFIG_RETHUNK +#ifdef CONFIG_MITIGATION_RETHUNK /* * This is called by apply_returns() to fix up static call trampolines, * specifically ARCH_DEFINE_STATIC_CALL_NULL_TRAMP which is recorded as diff --git a/arch/x86/kernel/step.c b/arch/x86/kernel/step.c index 8e2b2552b5ee..3e2952679b88 100644 --- a/arch/x86/kernel/step.c +++ b/arch/x86/kernel/step.c @@ -6,7 +6,9 @@ #include <linux/sched/task_stack.h> #include <linux/mm.h> #include <linux/ptrace.h> + #include <asm/desc.h> +#include <asm/debugreg.h> #include <asm/mmu_context.h> unsigned long convert_ip_to_linear(struct task_struct *child, struct pt_regs *regs) diff --git a/arch/x86/kernel/sys_x86_64.c b/arch/x86/kernel/sys_x86_64.c index c783aeb37dce..cb9fa1d5c66f 100644 --- a/arch/x86/kernel/sys_x86_64.c +++ b/arch/x86/kernel/sys_x86_64.c @@ -52,13 +52,6 @@ static unsigned long get_align_bits(void) return va_align.bits & get_align_mask(); } -unsigned long align_vdso_addr(unsigned long addr) -{ - unsigned long align_mask = get_align_mask(); - addr = (addr + align_mask) & ~align_mask; - return addr | get_align_bits(); -} - static int __init control_va_addr_alignment(char *str) { /* guard against enabling this on other CPU families */ diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c index c3b2f863acf0..4fa0b17e5043 100644 --- a/arch/x86/kernel/traps.c +++ b/arch/x86/kernel/traps.c @@ -51,6 +51,7 @@ #include <asm/ftrace.h> #include <asm/traps.h> #include <asm/desc.h> +#include <asm/fred.h> #include <asm/fpu/api.h> #include <asm/cpu.h> #include <asm/cpu_entry_area.h> @@ -773,7 +774,7 @@ DEFINE_IDTENTRY_RAW(exc_int3) */ asmlinkage __visible noinstr struct pt_regs *sync_regs(struct pt_regs *eregs) { - struct pt_regs *regs = (struct pt_regs *)this_cpu_read(pcpu_hot.top_of_stack) - 1; + struct pt_regs *regs = (struct pt_regs *)current_top_of_stack() - 1; if (regs != eregs) *regs = *eregs; return regs; @@ -791,7 +792,7 @@ asmlinkage __visible noinstr struct pt_regs *vc_switch_off_ist(struct pt_regs *r * trust it and switch to the current kernel stack */ if (ip_within_syscall_gap(regs)) { - sp = this_cpu_read(pcpu_hot.top_of_stack); + sp = current_top_of_stack(); goto sync; } @@ -935,8 +936,7 @@ static bool notify_debug(struct pt_regs *regs, unsigned long *dr6) return false; } -static __always_inline void exc_debug_kernel(struct pt_regs *regs, - unsigned long dr6) +static noinstr void exc_debug_kernel(struct pt_regs *regs, unsigned long dr6) { /* * Disable breakpoints during exception handling; recursive exceptions @@ -948,6 +948,11 @@ static __always_inline void exc_debug_kernel(struct pt_regs *regs, * * Entry text is excluded for HW_BP_X and cpu_entry_area, which * includes the entry stack is excluded for everything. + * + * For FRED, nested #DB should just work fine. But when a watchpoint or + * breakpoint is set in the code path which is executed by #DB handler, + * it results in an endless recursion and stack overflow. Thus we stay + * with the IDT approach, i.e., save DR7 and disable #DB. */ unsigned long dr7 = local_db_save(); irqentry_state_t irq_state = irqentry_nmi_enter(regs); @@ -977,7 +982,8 @@ static __always_inline void exc_debug_kernel(struct pt_regs *regs, * Catch SYSENTER with TF set and clear DR_STEP. If this hit a * watchpoint at the same time then that will still be handled. */ - if ((dr6 & DR_STEP) && is_sysenter_singlestep(regs)) + if (!cpu_feature_enabled(X86_FEATURE_FRED) && + (dr6 & DR_STEP) && is_sysenter_singlestep(regs)) dr6 &= ~DR_STEP; /* @@ -1009,8 +1015,7 @@ out: local_db_restore(dr7); } -static __always_inline void exc_debug_user(struct pt_regs *regs, - unsigned long dr6) +static noinstr void exc_debug_user(struct pt_regs *regs, unsigned long dr6) { bool icebp; @@ -1094,6 +1099,34 @@ DEFINE_IDTENTRY_DEBUG_USER(exc_debug) { exc_debug_user(regs, debug_read_clear_dr6()); } + +#ifdef CONFIG_X86_FRED +/* + * When occurred on different ring level, i.e., from user or kernel + * context, #DB needs to be handled on different stack: User #DB on + * current task stack, while kernel #DB on a dedicated stack. + * + * This is exactly how FRED event delivery invokes an exception + * handler: ring 3 event on level 0 stack, i.e., current task stack; + * ring 0 event on the #DB dedicated stack specified in the + * IA32_FRED_STKLVLS MSR. So unlike IDT, the FRED debug exception + * entry stub doesn't do stack switch. + */ +DEFINE_FREDENTRY_DEBUG(exc_debug) +{ + /* + * FRED #DB stores DR6 on the stack in the format which + * debug_read_clear_dr6() returns for the IDT entry points. + */ + unsigned long dr6 = fred_event_data(regs); + + if (user_mode(regs)) + exc_debug_user(regs, dr6); + else + exc_debug_kernel(regs, dr6); +} +#endif /* CONFIG_X86_FRED */ + #else /* 32 bit does not have separate entry points. */ DEFINE_IDTENTRY_RAW(exc_debug) @@ -1369,8 +1402,34 @@ DEFINE_IDTENTRY_SW(iret_error) } #endif +/* Do not enable FRED by default yet. */ +static bool enable_fred __ro_after_init = false; + +#ifdef CONFIG_X86_FRED +static int __init fred_setup(char *str) +{ + if (!str) + return -EINVAL; + + if (!cpu_feature_enabled(X86_FEATURE_FRED)) + return 0; + + if (!strcmp(str, "on")) + enable_fred = true; + else if (!strcmp(str, "off")) + enable_fred = false; + else + pr_warn("invalid FRED option: 'fred=%s'\n", str); + return 0; +} +early_param("fred", fred_setup); +#endif + void __init trap_init(void) { + if (cpu_feature_enabled(X86_FEATURE_FRED) && !enable_fred) + setup_clear_cpu_cap(X86_FEATURE_FRED); + /* Init cpu_entry_area before IST entries are set up */ setup_cpu_entry_areas(); @@ -1379,7 +1438,10 @@ void __init trap_init(void) /* Initialize TSS before setting up traps so ISTs work */ cpu_init_exception_handling(); + /* Setup traps as cpu_init() might #GP */ - idt_setup_traps(); + if (!cpu_feature_enabled(X86_FEATURE_FRED)) + idt_setup_traps(); + cpu_init(); } diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c index 15f97c0abc9d..5a69a49acc96 100644 --- a/arch/x86/kernel/tsc.c +++ b/arch/x86/kernel/tsc.c @@ -53,7 +53,7 @@ static int __read_mostly tsc_force_recalibrate; static u32 art_to_tsc_numerator; static u32 art_to_tsc_denominator; static u64 art_to_tsc_offset; -static struct clocksource *art_related_clocksource; +static bool have_art; struct cyc2ns { struct cyc2ns_data data[2]; /* 0 + 2*16 = 32 */ @@ -652,7 +652,7 @@ success: } /** - * native_calibrate_tsc + * native_calibrate_tsc - determine TSC frequency * Determine TSC frequency via CPUID, else return 0. */ unsigned long native_calibrate_tsc(void) @@ -1168,6 +1168,7 @@ static struct clocksource clocksource_tsc_early = { .mask = CLOCKSOURCE_MASK(64), .flags = CLOCK_SOURCE_IS_CONTINUOUS | CLOCK_SOURCE_MUST_VERIFY, + .id = CSID_X86_TSC_EARLY, .vdso_clock_mode = VDSO_CLOCKMODE_TSC, .enable = tsc_cs_enable, .resume = tsc_resume, @@ -1190,6 +1191,7 @@ static struct clocksource clocksource_tsc = { CLOCK_SOURCE_VALID_FOR_HRES | CLOCK_SOURCE_MUST_VERIFY | CLOCK_SOURCE_VERIFY_PERCPU, + .id = CSID_X86_TSC, .vdso_clock_mode = VDSO_CLOCKMODE_TSC, .enable = tsc_cs_enable, .resume = tsc_resume, @@ -1309,8 +1311,10 @@ struct system_counterval_t convert_art_to_tsc(u64 art) do_div(tmp, art_to_tsc_denominator); res += tmp + art_to_tsc_offset; - return (struct system_counterval_t) {.cs = art_related_clocksource, - .cycles = res}; + return (struct system_counterval_t) { + .cs_id = have_art ? CSID_X86_TSC : CSID_GENERIC, + .cycles = res, + }; } EXPORT_SYMBOL(convert_art_to_tsc); @@ -1327,12 +1331,10 @@ EXPORT_SYMBOL(convert_art_to_tsc); * that this flag is set before conversion to TSC is attempted. * * Return: - * struct system_counterval_t - system counter value with the pointer to the - * corresponding clocksource - * @cycles: System counter value - * @cs: Clocksource corresponding to system counter value. Used - * by timekeeping code to verify comparability of two cycle - * values. + * struct system_counterval_t - system counter value with the ID of the + * corresponding clocksource: + * cycles: System counter value + * cs_id: The clocksource ID for validating comparability */ struct system_counterval_t convert_art_ns_to_tsc(u64 art_ns) @@ -1347,8 +1349,10 @@ struct system_counterval_t convert_art_ns_to_tsc(u64 art_ns) do_div(tmp, USEC_PER_SEC); res += tmp; - return (struct system_counterval_t) { .cs = art_related_clocksource, - .cycles = res}; + return (struct system_counterval_t) { + .cs_id = have_art ? CSID_X86_TSC : CSID_GENERIC, + .cycles = res, + }; } EXPORT_SYMBOL(convert_art_ns_to_tsc); @@ -1357,7 +1361,7 @@ static void tsc_refine_calibration_work(struct work_struct *work); static DECLARE_DELAYED_WORK(tsc_irqwork, tsc_refine_calibration_work); /** * tsc_refine_calibration_work - Further refine tsc freq calibration - * @work - ignored. + * @work: ignored. * * This functions uses delayed work over a period of a * second to further refine the TSC freq value. Since this is @@ -1455,7 +1459,7 @@ out: goto unreg; if (boot_cpu_has(X86_FEATURE_ART)) - art_related_clocksource = &clocksource_tsc; + have_art = true; clocksource_register_khz(&clocksource_tsc, tsc_khz); unreg: clocksource_unregister(&clocksource_tsc_early); @@ -1481,7 +1485,7 @@ static int __init init_tsc_clocksource(void) */ if (boot_cpu_has(X86_FEATURE_TSC_KNOWN_FREQ)) { if (boot_cpu_has(X86_FEATURE_ART)) - art_related_clocksource = &clocksource_tsc; + have_art = true; clocksource_register_khz(&clocksource_tsc, tsc_khz); clocksource_unregister(&clocksource_tsc_early); diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S index a349dbfc6d5a..56451fd2099e 100644 --- a/arch/x86/kernel/vmlinux.lds.S +++ b/arch/x86/kernel/vmlinux.lds.S @@ -46,6 +46,7 @@ ENTRY(phys_startup_64) #endif jiffies = jiffies_64; +const_pcpu_hot = pcpu_hot; #if defined(CONFIG_X86_64) /* @@ -132,7 +133,7 @@ SECTIONS LOCK_TEXT KPROBES_TEXT SOFTIRQENTRY_TEXT -#ifdef CONFIG_RETPOLINE +#ifdef CONFIG_MITIGATION_RETPOLINE *(.text..__x86.indirect_thunk) *(.text..__x86.return_thunk) #endif @@ -142,7 +143,7 @@ SECTIONS *(.text..__x86.rethunk_untrain) ENTRY_TEXT -#ifdef CONFIG_CPU_SRSO +#ifdef CONFIG_MITIGATION_SRSO /* * See the comment above srso_alias_untrain_ret()'s * definition. @@ -267,7 +268,7 @@ SECTIONS } #endif -#ifdef CONFIG_RETPOLINE +#ifdef CONFIG_MITIGATION_RETPOLINE /* * List of instructions that call/jmp/jcc to retpoline thunks * __x86_indirect_thunk_*(). These instructions can be patched along @@ -504,11 +505,11 @@ INIT_PER_CPU(irq_stack_backing_store); "fixed_percpu_data is not at start of per-cpu area"); #endif -#ifdef CONFIG_CPU_UNRET_ENTRY +#ifdef CONFIG_MITIGATION_UNRET_ENTRY . = ASSERT((retbleed_return_thunk & 0x3f) == 0, "retbleed_return_thunk not cacheline-aligned"); #endif -#ifdef CONFIG_CPU_SRSO +#ifdef CONFIG_MITIGATION_SRSO . = ASSERT((srso_safe_ret & 0x3f) == 0, "srso_safe_ret not cacheline-aligned"); /* * GNU ld cannot do XOR until 2.41. diff --git a/arch/x86/kernel/vsmp_64.c b/arch/x86/kernel/vsmp_64.c index d3fc01770558..73511332bb67 100644 --- a/arch/x86/kernel/vsmp_64.c +++ b/arch/x86/kernel/vsmp_64.c @@ -127,25 +127,12 @@ static void __init vsmp_cap_cpus(void) #endif } -static u32 apicid_phys_pkg_id(u32 initial_apic_id, int index_msb) -{ - return read_apic_id() >> index_msb; -} - -static void vsmp_apic_post_init(void) -{ - /* need to update phys_pkg_id */ - apic->phys_pkg_id = apicid_phys_pkg_id; -} - void __init vsmp_init(void) { detect_vsmp_box(); if (!is_vsmp_box()) return; - x86_platform.apic_post_init = vsmp_apic_post_init; - vsmp_cap_cpus(); set_vsmp_ctl(); diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c index a37ebd3b4773..a42830dc151b 100644 --- a/arch/x86/kernel/x86_init.c +++ b/arch/x86/kernel/x86_init.c @@ -70,8 +70,9 @@ struct x86_init_ops x86_init __initdata = { .mpparse = { .setup_ioapic_ids = x86_init_noop, - .find_smp_config = default_find_smp_config, - .get_smp_config = default_get_smp_config, + .find_mptable = mpparse_find_mptable, + .early_parse_smp_cfg = mpparse_parse_early_smp_config, + .parse_smp_cfg = mpparse_parse_smp_config, }, .irqs = { diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig index 87e3da7b0439..65ed14b6540b 100644 --- a/arch/x86/kvm/Kconfig +++ b/arch/x86/kvm/Kconfig @@ -80,9 +80,10 @@ config KVM_SW_PROTECTED_VM depends on KVM && X86_64 select KVM_GENERIC_PRIVATE_MEM help - Enable support for KVM software-protected VMs. Currently "protected" - means the VM can be backed with memory provided by - KVM_CREATE_GUEST_MEMFD. + Enable support for KVM software-protected VMs. Currently, software- + protected VMs are purely a development and testing vehicle for + KVM_CREATE_GUEST_MEMFD. Attempting to run a "real" VM workload as a + software-protected VM will fail miserably. If unsure, say "N". diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index 4943f6b2bbee..8a47f8541eab 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -1322,6 +1322,56 @@ static bool hv_check_msr_access(struct kvm_vcpu_hv *hv_vcpu, u32 msr) return false; } +#define KVM_HV_WIN2016_GUEST_ID 0x1040a00003839 +#define KVM_HV_WIN2016_GUEST_ID_MASK (~GENMASK_ULL(23, 16)) /* mask out the service version */ + +/* + * Hyper-V enabled Windows Server 2016 SMP VMs fail to boot in !XSAVES && XSAVEC + * configuration. + * Such configuration can result from, for example, AMD Erratum 1386 workaround. + * + * Print a notice so users aren't left wondering what's suddenly gone wrong. + */ +static void __kvm_hv_xsaves_xsavec_maybe_warn(struct kvm_vcpu *vcpu) +{ + struct kvm *kvm = vcpu->kvm; + struct kvm_hv *hv = to_kvm_hv(kvm); + + /* Check again under the hv_lock. */ + if (hv->xsaves_xsavec_checked) + return; + + if ((hv->hv_guest_os_id & KVM_HV_WIN2016_GUEST_ID_MASK) != + KVM_HV_WIN2016_GUEST_ID) + return; + + hv->xsaves_xsavec_checked = true; + + /* UP configurations aren't affected */ + if (atomic_read(&kvm->online_vcpus) < 2) + return; + + if (guest_cpuid_has(vcpu, X86_FEATURE_XSAVES) || + !guest_cpuid_has(vcpu, X86_FEATURE_XSAVEC)) + return; + + pr_notice_ratelimited("Booting SMP Windows KVM VM with !XSAVES && XSAVEC. " + "If it fails to boot try disabling XSAVEC in the VM config.\n"); +} + +void kvm_hv_xsaves_xsavec_maybe_warn(struct kvm_vcpu *vcpu) +{ + struct kvm_hv *hv = to_kvm_hv(vcpu->kvm); + + if (!vcpu->arch.hyperv_enabled || + hv->xsaves_xsavec_checked) + return; + + mutex_lock(&hv->hv_lock); + __kvm_hv_xsaves_xsavec_maybe_warn(vcpu); + mutex_unlock(&hv->hv_lock); +} + static int kvm_hv_set_msr_pw(struct kvm_vcpu *vcpu, u32 msr, u64 data, bool host) { diff --git a/arch/x86/kvm/hyperv.h b/arch/x86/kvm/hyperv.h index 1dc0b6604526..923e64903da9 100644 --- a/arch/x86/kvm/hyperv.h +++ b/arch/x86/kvm/hyperv.h @@ -182,6 +182,8 @@ void kvm_hv_setup_tsc_page(struct kvm *kvm, struct pvclock_vcpu_time_info *hv_clock); void kvm_hv_request_tsc_page_update(struct kvm *kvm); +void kvm_hv_xsaves_xsavec_maybe_warn(struct kvm_vcpu *vcpu); + void kvm_hv_init_vm(struct kvm *kvm); void kvm_hv_destroy_vm(struct kvm *kvm); int kvm_hv_vcpu_init(struct kvm_vcpu *vcpu); @@ -267,6 +269,7 @@ int kvm_hv_vcpu_flush_tlb(struct kvm_vcpu *vcpu); static inline void kvm_hv_setup_tsc_page(struct kvm *kvm, struct pvclock_vcpu_time_info *hv_clock) {} static inline void kvm_hv_request_tsc_page_update(struct kvm *kvm) {} +static inline void kvm_hv_xsaves_xsavec_maybe_warn(struct kvm_vcpu *vcpu) {} static inline void kvm_hv_init_vm(struct kvm *kvm) {} static inline void kvm_hv_destroy_vm(struct kvm *kvm) {} static inline int kvm_hv_vcpu_init(struct kvm_vcpu *vcpu) diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index 3242f3da2457..1edf93ee3395 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -2815,7 +2815,10 @@ int kvm_create_lapic(struct kvm_vcpu *vcpu, int timer_advance_ns) vcpu->arch.apic = apic; - apic->regs = (void *)get_zeroed_page(GFP_KERNEL_ACCOUNT); + if (kvm_x86_ops.alloc_apic_backing_page) + apic->regs = static_call(kvm_x86_alloc_apic_backing_page)(vcpu); + else + apic->regs = (void *)get_zeroed_page(GFP_KERNEL_ACCOUNT); if (!apic->regs) { printk(KERN_ERR "malloc apic regs error for vcpu %x\n", vcpu->vcpu_id); diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index 2d6cdeab1f8a..9a905f10e10c 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -53,12 +53,11 @@ #include <asm/cmpxchg.h> #include <asm/io.h> #include <asm/set_memory.h> +#include <asm/spec-ctrl.h> #include <asm/vmx.h> #include "trace.h" -extern bool itlb_multihit_kvm_mitigation; - static bool nx_hugepage_mitigation_hard_disabled; int __read_mostly nx_huge_pages = -1; @@ -263,7 +262,7 @@ static unsigned long get_guest_cr3(struct kvm_vcpu *vcpu) static inline unsigned long kvm_mmu_get_guest_pgd(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu) { - if (IS_ENABLED(CONFIG_RETPOLINE) && mmu->get_guest_pgd == get_guest_cr3) + if (IS_ENABLED(CONFIG_MITIGATION_RETPOLINE) && mmu->get_guest_pgd == get_guest_cr3) return kvm_read_cr3(vcpu); return mmu->get_guest_pgd(vcpu); @@ -4405,6 +4404,31 @@ static int kvm_faultin_pfn(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault, fault->mmu_seq = vcpu->kvm->mmu_invalidate_seq; smp_rmb(); + /* + * Check for a relevant mmu_notifier invalidation event before getting + * the pfn from the primary MMU, and before acquiring mmu_lock. + * + * For mmu_lock, if there is an in-progress invalidation and the kernel + * allows preemption, the invalidation task may drop mmu_lock and yield + * in response to mmu_lock being contended, which is *very* counter- + * productive as this vCPU can't actually make forward progress until + * the invalidation completes. + * + * Retrying now can also avoid unnessary lock contention in the primary + * MMU, as the primary MMU doesn't necessarily hold a single lock for + * the duration of the invalidation, i.e. faulting in a conflicting pfn + * can cause the invalidation to take longer by holding locks that are + * needed to complete the invalidation. + * + * Do the pre-check even for non-preemtible kernels, i.e. even if KVM + * will never yield mmu_lock in response to contention, as this vCPU is + * *guaranteed* to need to retry, i.e. waiting until mmu_lock is held + * to detect retry guarantees the worst case latency for the vCPU. + */ + if (fault->slot && + mmu_invalidate_retry_gfn_unsafe(vcpu->kvm, fault->mmu_seq, fault->gfn)) + return RET_PF_RETRY; + ret = __kvm_faultin_pfn(vcpu, fault); if (ret != RET_PF_CONTINUE) return ret; @@ -4415,6 +4439,18 @@ static int kvm_faultin_pfn(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault, if (unlikely(!fault->slot)) return kvm_handle_noslot_fault(vcpu, fault, access); + /* + * Check again for a relevant mmu_notifier invalidation event purely to + * avoid contending mmu_lock. Most invalidations will be detected by + * the previous check, but checking is extremely cheap relative to the + * overall cost of failing to detect the invalidation until after + * mmu_lock is acquired. + */ + if (mmu_invalidate_retry_gfn_unsafe(vcpu->kvm, fault->mmu_seq, fault->gfn)) { + kvm_release_pfn_clean(fault->pfn); + return RET_PF_RETRY; + } + return RET_PF_CONTINUE; } @@ -4442,6 +4478,11 @@ static bool is_page_fault_stale(struct kvm_vcpu *vcpu, if (!sp && kvm_test_request(KVM_REQ_MMU_FREE_OBSOLETE_ROOTS, vcpu)) return true; + /* + * Check for a relevant mmu_notifier invalidation event one last time + * now that mmu_lock is held, as the "unsafe" checks performed without + * holding mmu_lock can get false negatives. + */ return fault->slot && mmu_invalidate_retry_gfn(vcpu->kvm, fault->mmu_seq, fault->gfn); } diff --git a/arch/x86/kvm/mmu/mmu_internal.h b/arch/x86/kvm/mmu/mmu_internal.h index 0669a8a668ca..5390a591a571 100644 --- a/arch/x86/kvm/mmu/mmu_internal.h +++ b/arch/x86/kvm/mmu/mmu_internal.h @@ -315,7 +315,7 @@ static inline int kvm_mmu_do_page_fault(struct kvm_vcpu *vcpu, gpa_t cr2_or_gpa, if (!prefetch) vcpu->stat.pf_taken++; - if (IS_ENABLED(CONFIG_RETPOLINE) && fault.is_tdp) + if (IS_ENABLED(CONFIG_MITIGATION_RETPOLINE) && fault.is_tdp) r = kvm_tdp_page_fault(vcpu, &fault); else r = vcpu->arch.mmu->page_fault(vcpu, &fault); diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c index dee62362a360..55b9a6d96bcf 100644 --- a/arch/x86/kvm/svm/nested.c +++ b/arch/x86/kvm/svm/nested.c @@ -1181,7 +1181,7 @@ int svm_allocate_nested(struct vcpu_svm *svm) if (svm->nested.initialized) return 0; - vmcb02_page = alloc_page(GFP_KERNEL_ACCOUNT | __GFP_ZERO); + vmcb02_page = snp_safe_alloc_page(&svm->vcpu); if (!vmcb02_page) return -ENOMEM; svm->nested.vmcb02.ptr = page_address(vmcb02_page); diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c index f760106c31f8..ae0ac12382b9 100644 --- a/arch/x86/kvm/svm/sev.c +++ b/arch/x86/kvm/svm/sev.c @@ -57,7 +57,7 @@ static bool sev_es_enabled = true; module_param_named(sev_es, sev_es_enabled, bool, 0444); /* enable/disable SEV-ES DebugSwap support */ -static bool sev_es_debug_swap_enabled = true; +static bool sev_es_debug_swap_enabled = false; module_param_named(debug_swap, sev_es_debug_swap_enabled, bool, 0444); #else #define sev_enabled false @@ -246,6 +246,7 @@ static void sev_unbind_asid(struct kvm *kvm, unsigned int handle) static int sev_guest_init(struct kvm *kvm, struct kvm_sev_cmd *argp) { struct kvm_sev_info *sev = &to_kvm_svm(kvm)->sev_info; + struct sev_platform_init_args init_args = {0}; int asid, ret; if (kvm->created_vcpus) @@ -262,7 +263,8 @@ static int sev_guest_init(struct kvm *kvm, struct kvm_sev_cmd *argp) goto e_no_asid; sev->asid = asid; - ret = sev_platform_init(&argp->error); + init_args.probe = false; + ret = sev_platform_init(&init_args); if (ret) goto e_free; @@ -274,6 +276,7 @@ static int sev_guest_init(struct kvm *kvm, struct kvm_sev_cmd *argp) return 0; e_free: + argp->error = init_args.error; sev_asid_free(sev); sev->asid = 0; e_no_asid: @@ -612,8 +615,11 @@ static int sev_es_sync_vmsa(struct vcpu_svm *svm) save->xss = svm->vcpu.arch.ia32_xss; save->dr6 = svm->vcpu.arch.dr6; - if (sev_es_debug_swap_enabled) + if (sev_es_debug_swap_enabled) { save->sev_features |= SVM_SEV_FEAT_DEBUG_SWAP; + pr_warn_once("Enabling DebugSwap with KVM_SEV_ES_INIT. " + "This will not work starting with Linux 6.10\n"); + } pr_debug("Virtual Machine Save Area (VMSA):\n"); print_hex_dump_debug("", DUMP_PREFIX_NONE, 16, 1, save, sizeof(*save), false); @@ -1975,20 +1981,22 @@ int sev_mem_enc_register_region(struct kvm *kvm, goto e_free; } - region->uaddr = range->addr; - region->size = range->size; - - list_add_tail(®ion->list, &sev->regions_list); - mutex_unlock(&kvm->lock); - /* * The guest may change the memory encryption attribute from C=0 -> C=1 * or vice versa for this memory range. Lets make sure caches are * flushed to ensure that guest data gets written into memory with - * correct C-bit. + * correct C-bit. Note, this must be done before dropping kvm->lock, + * as region and its array of pages can be freed by a different task + * once kvm->lock is released. */ sev_clflush_pages(region->pages, region->npages); + region->uaddr = range->addr; + region->size = range->size; + + list_add_tail(®ion->list, &sev->regions_list); + mutex_unlock(&kvm->lock); + return ret; e_free: @@ -3160,3 +3168,35 @@ void sev_vcpu_deliver_sipi_vector(struct kvm_vcpu *vcpu, u8 vector) ghcb_set_sw_exit_info_2(svm->sev_es.ghcb, 1); } + +struct page *snp_safe_alloc_page(struct kvm_vcpu *vcpu) +{ + unsigned long pfn; + struct page *p; + + if (!cpu_feature_enabled(X86_FEATURE_SEV_SNP)) + return alloc_page(GFP_KERNEL_ACCOUNT | __GFP_ZERO); + + /* + * Allocate an SNP-safe page to workaround the SNP erratum where + * the CPU will incorrectly signal an RMP violation #PF if a + * hugepage (2MB or 1GB) collides with the RMP entry of a + * 2MB-aligned VMCB, VMSA, or AVIC backing page. + * + * Allocate one extra page, choose a page which is not + * 2MB-aligned, and free the other. + */ + p = alloc_pages(GFP_KERNEL_ACCOUNT | __GFP_ZERO, 1); + if (!p) + return NULL; + + split_page(p, 1); + + pfn = page_to_pfn(p); + if (IS_ALIGNED(pfn, PTRS_PER_PMD)) + __free_page(p++); + else + __free_page(p + 1); + + return p; +} diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index e90b429c84f1..272d5ed37ce7 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -703,7 +703,7 @@ static int svm_cpu_init(int cpu) int ret = -ENOMEM; memset(sd, 0, sizeof(struct svm_cpu_data)); - sd->save_area = alloc_page(GFP_KERNEL | __GFP_ZERO); + sd->save_area = snp_safe_alloc_page(NULL); if (!sd->save_area) return ret; @@ -1421,7 +1421,7 @@ static int svm_vcpu_create(struct kvm_vcpu *vcpu) svm = to_svm(vcpu); err = -ENOMEM; - vmcb01_page = alloc_page(GFP_KERNEL_ACCOUNT | __GFP_ZERO); + vmcb01_page = snp_safe_alloc_page(vcpu); if (!vmcb01_page) goto out; @@ -1430,7 +1430,7 @@ static int svm_vcpu_create(struct kvm_vcpu *vcpu) * SEV-ES guests require a separate VMSA page used to contain * the encrypted register state of the guest. */ - vmsa_page = alloc_page(GFP_KERNEL_ACCOUNT | __GFP_ZERO); + vmsa_page = snp_safe_alloc_page(vcpu); if (!vmsa_page) goto error_free_vmcb_page; @@ -3455,7 +3455,7 @@ int svm_invoke_exit_handler(struct kvm_vcpu *vcpu, u64 exit_code) if (!svm_check_exit_valid(exit_code)) return svm_handle_invalid_exit(vcpu, exit_code); -#ifdef CONFIG_RETPOLINE +#ifdef CONFIG_MITIGATION_RETPOLINE if (exit_code == SVM_EXIT_MSR) return msr_interception(vcpu); else if (exit_code == SVM_EXIT_VINTR) @@ -4900,6 +4900,16 @@ static int svm_vm_init(struct kvm *kvm) return 0; } +static void *svm_alloc_apic_backing_page(struct kvm_vcpu *vcpu) +{ + struct page *page = snp_safe_alloc_page(vcpu); + + if (!page) + return NULL; + + return page_address(page); +} + static struct kvm_x86_ops svm_x86_ops __initdata = { .name = KBUILD_MODNAME, @@ -5031,6 +5041,7 @@ static struct kvm_x86_ops svm_x86_ops __initdata = { .vcpu_deliver_sipi_vector = svm_vcpu_deliver_sipi_vector, .vcpu_get_apicv_inhibit_reasons = avic_vcpu_get_apicv_inhibit_reasons, + .alloc_apic_backing_page = svm_alloc_apic_backing_page, }; /* diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h index 8ef95139cd24..7f1fbd874c45 100644 --- a/arch/x86/kvm/svm/svm.h +++ b/arch/x86/kvm/svm/svm.h @@ -694,6 +694,7 @@ void sev_es_vcpu_reset(struct vcpu_svm *svm); void sev_vcpu_deliver_sipi_vector(struct kvm_vcpu *vcpu, u8 vector); void sev_es_prepare_switch_to_guest(struct sev_es_save_area *hostsa); void sev_es_unmap_ghcb(struct vcpu_svm *svm); +struct page *snp_safe_alloc_page(struct kvm_vcpu *vcpu); /* vmenter.S */ diff --git a/arch/x86/kvm/svm/svm_ops.h b/arch/x86/kvm/svm/svm_ops.h index 36c8af87a707..4e725854c63a 100644 --- a/arch/x86/kvm/svm/svm_ops.h +++ b/arch/x86/kvm/svm/svm_ops.h @@ -8,7 +8,7 @@ #define svm_asm(insn, clobber...) \ do { \ - asm_volatile_goto("1: " __stringify(insn) "\n\t" \ + asm goto("1: " __stringify(insn) "\n\t" \ _ASM_EXTABLE(1b, %l[fault]) \ ::: clobber : fault); \ return; \ @@ -18,7 +18,7 @@ fault: \ #define svm_asm1(insn, op1, clobber...) \ do { \ - asm_volatile_goto("1: " __stringify(insn) " %0\n\t" \ + asm goto("1: " __stringify(insn) " %0\n\t" \ _ASM_EXTABLE(1b, %l[fault]) \ :: op1 : clobber : fault); \ return; \ @@ -28,7 +28,7 @@ fault: \ #define svm_asm2(insn, op1, op2, clobber...) \ do { \ - asm_volatile_goto("1: " __stringify(insn) " %1, %0\n\t" \ + asm goto("1: " __stringify(insn) " %1, %0\n\t" \ _ASM_EXTABLE(1b, %l[fault]) \ :: op1, op2 : clobber : fault); \ return; \ diff --git a/arch/x86/kvm/svm/vmenter.S b/arch/x86/kvm/svm/vmenter.S index 9499f9c6b077..187018c424bf 100644 --- a/arch/x86/kvm/svm/vmenter.S +++ b/arch/x86/kvm/svm/vmenter.S @@ -207,7 +207,7 @@ SYM_FUNC_START(__svm_vcpu_run) 7: vmload %_ASM_AX 8: -#ifdef CONFIG_RETPOLINE +#ifdef CONFIG_MITIGATION_RETPOLINE /* IMPORTANT: Stuff the RSB immediately after VM-Exit, before RET! */ FILL_RETURN_BUFFER %_ASM_AX, RSB_CLEAR_LOOPS, X86_FEATURE_RETPOLINE #endif @@ -344,7 +344,7 @@ SYM_FUNC_START(__svm_sev_es_vcpu_run) /* Pop @svm to RDI, guest registers have been saved already. */ pop %_ASM_DI -#ifdef CONFIG_RETPOLINE +#ifdef CONFIG_MITIGATION_RETPOLINE /* IMPORTANT: Stuff the RSB immediately after VM-Exit, before RET! */ FILL_RETURN_BUFFER %_ASM_AX, RSB_CLEAR_LOOPS, X86_FEATURE_RETPOLINE #endif diff --git a/arch/x86/kvm/vmx/pmu_intel.c b/arch/x86/kvm/vmx/pmu_intel.c index a6216c874729..315c7c2ba89b 100644 --- a/arch/x86/kvm/vmx/pmu_intel.c +++ b/arch/x86/kvm/vmx/pmu_intel.c @@ -71,7 +71,7 @@ static int fixed_pmc_events[] = { static void reprogram_fixed_counters(struct kvm_pmu *pmu, u64 data) { struct kvm_pmc *pmc; - u8 old_fixed_ctr_ctrl = pmu->fixed_ctr_ctrl; + u64 old_fixed_ctr_ctrl = pmu->fixed_ctr_ctrl; int i; pmu->fixed_ctr_ctrl = data; diff --git a/arch/x86/kvm/vmx/run_flags.h b/arch/x86/kvm/vmx/run_flags.h index edc3f16cc189..6a9bfdfbb6e5 100644 --- a/arch/x86/kvm/vmx/run_flags.h +++ b/arch/x86/kvm/vmx/run_flags.h @@ -2,7 +2,10 @@ #ifndef __KVM_X86_VMX_RUN_FLAGS_H #define __KVM_X86_VMX_RUN_FLAGS_H -#define VMX_RUN_VMRESUME (1 << 0) -#define VMX_RUN_SAVE_SPEC_CTRL (1 << 1) +#define VMX_RUN_VMRESUME_SHIFT 0 +#define VMX_RUN_SAVE_SPEC_CTRL_SHIFT 1 + +#define VMX_RUN_VMRESUME BIT(VMX_RUN_VMRESUME_SHIFT) +#define VMX_RUN_SAVE_SPEC_CTRL BIT(VMX_RUN_SAVE_SPEC_CTRL_SHIFT) #endif /* __KVM_X86_VMX_RUN_FLAGS_H */ diff --git a/arch/x86/kvm/vmx/vmenter.S b/arch/x86/kvm/vmx/vmenter.S index 906ecd001511..2bfbf758d061 100644 --- a/arch/x86/kvm/vmx/vmenter.S +++ b/arch/x86/kvm/vmx/vmenter.S @@ -139,7 +139,7 @@ SYM_FUNC_START(__vmx_vcpu_run) mov (%_ASM_SP), %_ASM_AX /* Check if vmlaunch or vmresume is needed */ - test $VMX_RUN_VMRESUME, %ebx + bt $VMX_RUN_VMRESUME_SHIFT, %ebx /* Load guest registers. Don't clobber flags. */ mov VCPU_RCX(%_ASM_AX), %_ASM_CX @@ -161,8 +161,11 @@ SYM_FUNC_START(__vmx_vcpu_run) /* Load guest RAX. This kills the @regs pointer! */ mov VCPU_RAX(%_ASM_AX), %_ASM_AX - /* Check EFLAGS.ZF from 'test VMX_RUN_VMRESUME' above */ - jz .Lvmlaunch + /* Clobbers EFLAGS.ZF */ + CLEAR_CPU_BUFFERS + + /* Check EFLAGS.CF from the VMX_RUN_VMRESUME bit test above. */ + jnc .Lvmlaunch /* * After a successful VMRESUME/VMLAUNCH, control flow "magically" diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index e262bc2ba4e5..305237dcba88 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -38,6 +38,7 @@ #include <asm/desc.h> #include <asm/fpu/api.h> #include <asm/fpu/xstate.h> +#include <asm/fred.h> #include <asm/idtentry.h> #include <asm/io.h> #include <asm/irq_remapping.h> @@ -388,7 +389,16 @@ static __always_inline void vmx_enable_fb_clear(struct vcpu_vmx *vmx) static void vmx_update_fb_clear_dis(struct kvm_vcpu *vcpu, struct vcpu_vmx *vmx) { - vmx->disable_fb_clear = (host_arch_capabilities & ARCH_CAP_FB_CLEAR_CTRL) && + /* + * Disable VERW's behavior of clearing CPU buffers for the guest if the + * CPU isn't affected by MDS/TAA, and the host hasn't forcefully enabled + * the mitigation. Disabling the clearing behavior provides a + * performance boost for guests that aren't aware that manually clearing + * CPU buffers is unnecessary, at the cost of MSR accesses on VM-Entry + * and VM-Exit. + */ + vmx->disable_fb_clear = !cpu_feature_enabled(X86_FEATURE_CLEAR_CPU_BUF) && + (host_arch_capabilities & ARCH_CAP_FB_CLEAR_CTRL) && !boot_cpu_has_bug(X86_BUG_MDS) && !boot_cpu_has_bug(X86_BUG_TAA); @@ -738,7 +748,7 @@ static int vmx_set_guest_uret_msr(struct vcpu_vmx *vmx, */ static int kvm_cpu_vmxoff(void) { - asm_volatile_goto("1: vmxoff\n\t" + asm goto("1: vmxoff\n\t" _ASM_EXTABLE(1b, %l[fault]) ::: "cc", "memory" : fault); @@ -2784,7 +2794,7 @@ static int kvm_cpu_vmxon(u64 vmxon_pointer) cr4_set_bits(X86_CR4_VMXE); - asm_volatile_goto("1: vmxon %[vmxon_pointer]\n\t" + asm goto("1: vmxon %[vmxon_pointer]\n\t" _ASM_EXTABLE(1b, %l[fault]) : : [vmxon_pointer] "m"(vmxon_pointer) : : fault); @@ -6543,7 +6553,7 @@ static int __vmx_handle_exit(struct kvm_vcpu *vcpu, fastpath_t exit_fastpath) if (exit_reason.basic >= kvm_vmx_max_exit_handlers) goto unexpected_vmexit; -#ifdef CONFIG_RETPOLINE +#ifdef CONFIG_MITIGATION_RETPOLINE if (exit_reason.basic == EXIT_REASON_MSR_WRITE) return kvm_emulate_wrmsr(vcpu); else if (exit_reason.basic == EXIT_REASON_PREEMPTION_TIMER) @@ -6960,14 +6970,16 @@ static void handle_external_interrupt_irqoff(struct kvm_vcpu *vcpu) { u32 intr_info = vmx_get_intr_info(vcpu); unsigned int vector = intr_info & INTR_INFO_VECTOR_MASK; - gate_desc *desc = (gate_desc *)host_idt_base + vector; if (KVM_BUG(!is_external_intr(intr_info), vcpu->kvm, "unexpected VM-Exit interrupt info: 0x%x", intr_info)) return; kvm_before_interrupt(vcpu, KVM_HANDLING_IRQ); - vmx_do_interrupt_irqoff(gate_offset(desc)); + if (cpu_feature_enabled(X86_FEATURE_FRED)) + fred_entry_from_kvm(EVENT_TYPE_EXTINT, vector); + else + vmx_do_interrupt_irqoff(gate_offset((gate_desc *)host_idt_base + vector)); kvm_after_interrupt(vcpu); vcpu->arch.at_instruction_boundary = true; @@ -7224,11 +7236,14 @@ static noinstr void vmx_vcpu_enter_exit(struct kvm_vcpu *vcpu, guest_state_enter_irqoff(); - /* L1D Flush includes CPU buffer clear to mitigate MDS */ + /* + * L1D Flush includes CPU buffer clear to mitigate MDS, but VERW + * mitigation for MDS is done late in VMentry and is still + * executed in spite of L1D Flush. This is because an extra VERW + * should not matter much after the big hammer L1D Flush. + */ if (static_branch_unlikely(&vmx_l1d_should_flush)) vmx_l1d_flush(vcpu); - else if (static_branch_unlikely(&mds_user_clear)) - mds_clear_cpu_buffers(); else if (static_branch_unlikely(&mmio_stale_data_clear) && kvm_arch_has_assigned_device(vcpu->kvm)) mds_clear_cpu_buffers(); @@ -7260,7 +7275,10 @@ static noinstr void vmx_vcpu_enter_exit(struct kvm_vcpu *vcpu, if ((u16)vmx->exit_reason.basic == EXIT_REASON_EXCEPTION_NMI && is_nmi(vmx_get_intr_info(vcpu))) { kvm_before_interrupt(vcpu, KVM_HANDLING_NMI); - vmx_do_nmi_irqoff(); + if (cpu_feature_enabled(X86_FEATURE_FRED)) + fred_entry_from_kvm(EVENT_TYPE_NMI, NMI_VECTOR); + else + vmx_do_nmi_irqoff(); kvm_after_interrupt(vcpu); } diff --git a/arch/x86/kvm/vmx/vmx_ops.h b/arch/x86/kvm/vmx/vmx_ops.h index f41ce3c24123..8060e5fc6dbd 100644 --- a/arch/x86/kvm/vmx/vmx_ops.h +++ b/arch/x86/kvm/vmx/vmx_ops.h @@ -94,7 +94,7 @@ static __always_inline unsigned long __vmcs_readl(unsigned long field) #ifdef CONFIG_CC_HAS_ASM_GOTO_OUTPUT - asm_volatile_goto("1: vmread %[field], %[output]\n\t" + asm_goto_output("1: vmread %[field], %[output]\n\t" "jna %l[do_fail]\n\t" _ASM_EXTABLE(1b, %l[do_exception]) @@ -188,7 +188,7 @@ static __always_inline unsigned long vmcs_readl(unsigned long field) #define vmx_asm1(insn, op1, error_args...) \ do { \ - asm_volatile_goto("1: " __stringify(insn) " %0\n\t" \ + asm goto("1: " __stringify(insn) " %0\n\t" \ ".byte 0x2e\n\t" /* branch not taken hint */ \ "jna %l[error]\n\t" \ _ASM_EXTABLE(1b, %l[fault]) \ @@ -205,7 +205,7 @@ fault: \ #define vmx_asm2(insn, op1, op2, error_args...) \ do { \ - asm_volatile_goto("1: " __stringify(insn) " %1, %0\n\t" \ + asm goto("1: " __stringify(insn) " %1, %0\n\t" \ ".byte 0x2e\n\t" /* branch not taken hint */ \ "jna %l[error]\n\t" \ _ASM_EXTABLE(1b, %l[fault]) \ diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 363b1c080205..ffe580169c93 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -1623,7 +1623,8 @@ static bool kvm_is_immutable_feature_msr(u32 msr) ARCH_CAP_SKIP_VMENTRY_L1DFLUSH | ARCH_CAP_SSB_NO | ARCH_CAP_MDS_NO | \ ARCH_CAP_PSCHANGE_MC_NO | ARCH_CAP_TSX_CTRL_MSR | ARCH_CAP_TAA_NO | \ ARCH_CAP_SBDR_SSDP_NO | ARCH_CAP_FBSDP_NO | ARCH_CAP_PSDP_NO | \ - ARCH_CAP_FB_CLEAR | ARCH_CAP_RRSBA | ARCH_CAP_PBRSB_NO | ARCH_CAP_GDS_NO) + ARCH_CAP_FB_CLEAR | ARCH_CAP_RRSBA | ARCH_CAP_PBRSB_NO | ARCH_CAP_GDS_NO | \ + ARCH_CAP_RFDS_NO | ARCH_CAP_RFDS_CLEAR) static u64 kvm_get_arch_capabilities(void) { @@ -1655,6 +1656,8 @@ static u64 kvm_get_arch_capabilities(void) data |= ARCH_CAP_SSB_NO; if (!boot_cpu_has_bug(X86_BUG_MDS)) data |= ARCH_CAP_MDS_NO; + if (!boot_cpu_has_bug(X86_BUG_RFDS)) + data |= ARCH_CAP_RFDS_NO; if (!boot_cpu_has(X86_FEATURE_RTM)) { /* @@ -1704,22 +1707,17 @@ static int do_get_msr_feature(struct kvm_vcpu *vcpu, unsigned index, u64 *data) struct kvm_msr_entry msr; int r; + /* Unconditionally clear the output for simplicity */ + msr.data = 0; msr.index = index; r = kvm_get_msr_feature(&msr); - if (r == KVM_MSR_RET_INVALID) { - /* Unconditionally clear the output for simplicity */ - *data = 0; - if (kvm_msr_ignored_check(index, 0, false)) - r = 0; - } - - if (r) - return r; + if (r == KVM_MSR_RET_INVALID && kvm_msr_ignored_check(index, 0, false)) + r = 0; *data = msr.data; - return 0; + return r; } static bool __kvm_valid_efer(struct kvm_vcpu *vcpu, u64 efer) @@ -1782,6 +1780,10 @@ static int set_efer(struct kvm_vcpu *vcpu, struct msr_data *msr_info) if ((efer ^ old_efer) & KVM_MMU_EFER_ROLE_BITS) kvm_mmu_reset_context(vcpu); + if (!static_cpu_has(X86_FEATURE_XSAVES) && + (efer & EFER_SVME)) + kvm_hv_xsaves_xsavec_maybe_warn(vcpu); + return 0; } @@ -2507,7 +2509,7 @@ static u64 compute_guest_tsc(struct kvm_vcpu *vcpu, s64 kernel_ns) } #ifdef CONFIG_X86_64 -static inline int gtod_is_based_on_tsc(int mode) +static inline bool gtod_is_based_on_tsc(int mode) { return mode == VDSO_CLOCKMODE_TSC || mode == VDSO_CLOCKMODE_HVCLOCK; } @@ -4581,7 +4583,7 @@ static bool kvm_is_vm_type_supported(unsigned long type) { return type == KVM_X86_DEFAULT_VM || (type == KVM_X86_SW_PROTECTED_VM && - IS_ENABLED(CONFIG_KVM_SW_PROTECTED_VM) && tdp_enabled); + IS_ENABLED(CONFIG_KVM_SW_PROTECTED_VM) && tdp_mmu_enabled); } int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) @@ -5454,7 +5456,8 @@ static int kvm_vcpu_ioctl_x86_set_vcpu_events(struct kvm_vcpu *vcpu, if (events->flags & KVM_VCPUEVENT_VALID_NMI_PENDING) { vcpu->arch.nmi_pending = 0; atomic_set(&vcpu->arch.nmi_queued, events->nmi.pending); - kvm_make_request(KVM_REQ_NMI, vcpu); + if (events->nmi.pending) + kvm_make_request(KVM_REQ_NMI, vcpu); } static_call(kvm_x86_set_nmi_mask)(vcpu, events->nmi.masked); @@ -7016,6 +7019,9 @@ set_identity_unlock: r = -EEXIST; if (kvm->arch.vpit) goto create_pit_unlock; + r = -ENOENT; + if (!pic_in_kernel(kvm)) + goto create_pit_unlock; r = -ENOMEM; kvm->arch.vpit = kvm_create_pit(kvm, u.pit_config.flags); if (kvm->arch.vpit) @@ -8004,6 +8010,16 @@ static int emulator_cmpxchg_emulated(struct x86_emulate_ctxt *ctxt, if (r < 0) return X86EMUL_UNHANDLEABLE; + + /* + * Mark the page dirty _before_ checking whether or not the CMPXCHG was + * successful, as the old value is written back on failure. Note, for + * live migration, this is unnecessarily conservative as CMPXCHG writes + * back the original value and the access is atomic, but KVM's ABI is + * that all writes are dirty logged, regardless of the value written. + */ + kvm_vcpu_mark_page_dirty(vcpu, gpa_to_gfn(gpa)); + if (r) return X86EMUL_CMPXCHG_FAILED; diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile index ea3a28e7b613..6da73513f026 100644 --- a/arch/x86/lib/Makefile +++ b/arch/x86/lib/Makefile @@ -14,19 +14,6 @@ ifdef CONFIG_KCSAN CFLAGS_REMOVE_delay.o = $(CC_FLAGS_FTRACE) endif -# Early boot use of cmdline; don't instrument it -ifdef CONFIG_AMD_MEM_ENCRYPT -KCOV_INSTRUMENT_cmdline.o := n -KASAN_SANITIZE_cmdline.o := n -KCSAN_SANITIZE_cmdline.o := n - -ifdef CONFIG_FUNCTION_TRACER -CFLAGS_REMOVE_cmdline.o = -pg -endif - -CFLAGS_cmdline.o := -fno-stack-protector -fno-jump-tables -endif - inat_tables_script = $(srctree)/arch/x86/tools/gen-insn-attr-x86.awk inat_tables_maps = $(srctree)/arch/x86/lib/x86-opcode-map.txt quiet_cmd_inat_tables = GEN $@ @@ -49,7 +36,7 @@ lib-$(CONFIG_ARCH_HAS_COPY_MC) += copy_mc.o copy_mc_64.o lib-$(CONFIG_INSTRUCTION_DECODER) += insn.o inat.o insn-eval.o lib-$(CONFIG_RANDOMIZE_BASE) += kaslr.o lib-$(CONFIG_FUNCTION_ERROR_INJECTION) += error-inject.o -lib-$(CONFIG_RETPOLINE) += retpoline.o +lib-$(CONFIG_MITIGATION_RETPOLINE) += retpoline.o obj-y += msr.o msr-reg.o msr-reg-export.o hweight.o obj-y += iomem.o diff --git a/arch/x86/lib/cmpxchg16b_emu.S b/arch/x86/lib/cmpxchg16b_emu.S index 6962df315793..4fb44894ad87 100644 --- a/arch/x86/lib/cmpxchg16b_emu.S +++ b/arch/x86/lib/cmpxchg16b_emu.S @@ -23,14 +23,14 @@ SYM_FUNC_START(this_cpu_cmpxchg16b_emu) cli /* if (*ptr == old) */ - cmpq PER_CPU_VAR(0(%rsi)), %rax + cmpq __percpu (%rsi), %rax jne .Lnot_same - cmpq PER_CPU_VAR(8(%rsi)), %rdx + cmpq __percpu 8(%rsi), %rdx jne .Lnot_same /* *ptr = new */ - movq %rbx, PER_CPU_VAR(0(%rsi)) - movq %rcx, PER_CPU_VAR(8(%rsi)) + movq %rbx, __percpu (%rsi) + movq %rcx, __percpu 8(%rsi) /* set ZF in EFLAGS to indicate success */ orl $X86_EFLAGS_ZF, (%rsp) @@ -42,8 +42,8 @@ SYM_FUNC_START(this_cpu_cmpxchg16b_emu) /* *ptr != old */ /* old = *ptr */ - movq PER_CPU_VAR(0(%rsi)), %rax - movq PER_CPU_VAR(8(%rsi)), %rdx + movq __percpu (%rsi), %rax + movq __percpu 8(%rsi), %rdx /* clear ZF in EFLAGS to indicate failure */ andl $(~X86_EFLAGS_ZF), (%rsp) diff --git a/arch/x86/lib/cmpxchg8b_emu.S b/arch/x86/lib/cmpxchg8b_emu.S index 873e4ef23e49..1c96be769adc 100644 --- a/arch/x86/lib/cmpxchg8b_emu.S +++ b/arch/x86/lib/cmpxchg8b_emu.S @@ -24,12 +24,12 @@ SYM_FUNC_START(cmpxchg8b_emu) pushfl cli - cmpl 0(%esi), %eax + cmpl (%esi), %eax jne .Lnot_same cmpl 4(%esi), %edx jne .Lnot_same - movl %ebx, 0(%esi) + movl %ebx, (%esi) movl %ecx, 4(%esi) orl $X86_EFLAGS_ZF, (%esp) @@ -38,7 +38,7 @@ SYM_FUNC_START(cmpxchg8b_emu) RET .Lnot_same: - movl 0(%esi), %eax + movl (%esi), %eax movl 4(%esi), %edx andl $(~X86_EFLAGS_ZF), (%esp) @@ -53,18 +53,30 @@ EXPORT_SYMBOL(cmpxchg8b_emu) #ifndef CONFIG_UML +/* + * Emulate 'cmpxchg8b %fs:(%rsi)' + * + * Inputs: + * %esi : memory location to compare + * %eax : low 32 bits of old value + * %edx : high 32 bits of old value + * %ebx : low 32 bits of new value + * %ecx : high 32 bits of new value + * + * Notably this is not LOCK prefixed and is not safe against NMIs + */ SYM_FUNC_START(this_cpu_cmpxchg8b_emu) pushfl cli - cmpl PER_CPU_VAR(0(%esi)), %eax + cmpl __percpu (%esi), %eax jne .Lnot_same2 - cmpl PER_CPU_VAR(4(%esi)), %edx + cmpl __percpu 4(%esi), %edx jne .Lnot_same2 - movl %ebx, PER_CPU_VAR(0(%esi)) - movl %ecx, PER_CPU_VAR(4(%esi)) + movl %ebx, __percpu (%esi) + movl %ecx, __percpu 4(%esi) orl $X86_EFLAGS_ZF, (%esp) @@ -72,8 +84,8 @@ SYM_FUNC_START(this_cpu_cmpxchg8b_emu) RET .Lnot_same2: - movl PER_CPU_VAR(0(%esi)), %eax - movl PER_CPU_VAR(4(%esi)), %edx + movl __percpu (%esi), %eax + movl __percpu 4(%esi), %edx andl $(~X86_EFLAGS_ZF), (%esp) diff --git a/arch/x86/lib/getuser.S b/arch/x86/lib/getuser.S index 20ef350a60fb..10d5ed8b5990 100644 --- a/arch/x86/lib/getuser.S +++ b/arch/x86/lib/getuser.S @@ -163,23 +163,23 @@ SYM_CODE_END(__get_user_8_handle_exception) #endif /* get_user */ - _ASM_EXTABLE(1b, __get_user_handle_exception) - _ASM_EXTABLE(2b, __get_user_handle_exception) - _ASM_EXTABLE(3b, __get_user_handle_exception) + _ASM_EXTABLE_UA(1b, __get_user_handle_exception) + _ASM_EXTABLE_UA(2b, __get_user_handle_exception) + _ASM_EXTABLE_UA(3b, __get_user_handle_exception) #ifdef CONFIG_X86_64 - _ASM_EXTABLE(4b, __get_user_handle_exception) + _ASM_EXTABLE_UA(4b, __get_user_handle_exception) #else - _ASM_EXTABLE(4b, __get_user_8_handle_exception) - _ASM_EXTABLE(5b, __get_user_8_handle_exception) + _ASM_EXTABLE_UA(4b, __get_user_8_handle_exception) + _ASM_EXTABLE_UA(5b, __get_user_8_handle_exception) #endif /* __get_user */ - _ASM_EXTABLE(6b, __get_user_handle_exception) - _ASM_EXTABLE(7b, __get_user_handle_exception) - _ASM_EXTABLE(8b, __get_user_handle_exception) + _ASM_EXTABLE_UA(6b, __get_user_handle_exception) + _ASM_EXTABLE_UA(7b, __get_user_handle_exception) + _ASM_EXTABLE_UA(8b, __get_user_handle_exception) #ifdef CONFIG_X86_64 - _ASM_EXTABLE(9b, __get_user_handle_exception) + _ASM_EXTABLE_UA(9b, __get_user_handle_exception) #else - _ASM_EXTABLE(9b, __get_user_8_handle_exception) - _ASM_EXTABLE(10b, __get_user_8_handle_exception) + _ASM_EXTABLE_UA(9b, __get_user_8_handle_exception) + _ASM_EXTABLE_UA(10b, __get_user_8_handle_exception) #endif diff --git a/arch/x86/lib/insn-eval.c b/arch/x86/lib/insn-eval.c index 558a605929db..98631c0e7a11 100644 --- a/arch/x86/lib/insn-eval.c +++ b/arch/x86/lib/insn-eval.c @@ -1129,15 +1129,15 @@ static int get_eff_addr_modrm_16(struct insn *insn, struct pt_regs *regs, * get_eff_addr_sib() - Obtain referenced effective address via SIB * @insn: Instruction. Must be valid. * @regs: Register values as seen when entering kernel mode - * @regoff: Obtained operand offset, in pt_regs, associated with segment + * @base_offset: Obtained operand offset, in pt_regs, associated with segment * @eff_addr: Obtained effective address * * Obtain the effective address referenced by the SIB byte of @insn. After * identifying the registers involved in the indexed, register-indirect memory * reference, its value is obtained from the operands in @regs. The computed * address is stored @eff_addr. Also, the register operand that indicates the - * associated segment is stored in @regoff, this parameter can later be used to - * determine such segment. + * associated segment is stored in @base_offset; this parameter can later be + * used to determine such segment. * * Returns: * diff --git a/arch/x86/lib/insn.c b/arch/x86/lib/insn.c index 55e371cc69fd..1bb155a0955b 100644 --- a/arch/x86/lib/insn.c +++ b/arch/x86/lib/insn.c @@ -71,7 +71,7 @@ void insn_init(struct insn *insn, const void *kaddr, int buf_len, int x86_64) insn->kaddr = kaddr; insn->end_kaddr = kaddr + buf_len; insn->next_byte = kaddr; - insn->x86_64 = x86_64 ? 1 : 0; + insn->x86_64 = x86_64; insn->opnd_bytes = 4; if (x86_64) insn->addr_bytes = 8; @@ -268,11 +268,9 @@ int insn_get_opcode(struct insn *insn) if (opcode->got) return 0; - if (!insn->prefixes.got) { - ret = insn_get_prefixes(insn); - if (ret) - return ret; - } + ret = insn_get_prefixes(insn); + if (ret) + return ret; /* Get first opcode */ op = get_next(insn_byte_t, insn); @@ -339,11 +337,9 @@ int insn_get_modrm(struct insn *insn) if (modrm->got) return 0; - if (!insn->opcode.got) { - ret = insn_get_opcode(insn); - if (ret) - return ret; - } + ret = insn_get_opcode(insn); + if (ret) + return ret; if (inat_has_modrm(insn->attr)) { mod = get_next(insn_byte_t, insn); @@ -386,11 +382,9 @@ int insn_rip_relative(struct insn *insn) if (!insn->x86_64) return 0; - if (!modrm->got) { - ret = insn_get_modrm(insn); - if (ret) - return 0; - } + ret = insn_get_modrm(insn); + if (ret) + return 0; /* * For rip-relative instructions, the mod field (top 2 bits) * is zero and the r/m field (bottom 3 bits) is 0x5. @@ -417,11 +411,9 @@ int insn_get_sib(struct insn *insn) if (insn->sib.got) return 0; - if (!insn->modrm.got) { - ret = insn_get_modrm(insn); - if (ret) - return ret; - } + ret = insn_get_modrm(insn); + if (ret) + return ret; if (insn->modrm.nbytes) { modrm = insn->modrm.bytes[0]; @@ -460,11 +452,9 @@ int insn_get_displacement(struct insn *insn) if (insn->displacement.got) return 0; - if (!insn->sib.got) { - ret = insn_get_sib(insn); - if (ret) - return ret; - } + ret = insn_get_sib(insn); + if (ret) + return ret; if (insn->modrm.nbytes) { /* @@ -628,11 +618,9 @@ int insn_get_immediate(struct insn *insn) if (insn->immediate.got) return 0; - if (!insn->displacement.got) { - ret = insn_get_displacement(insn); - if (ret) - return ret; - } + ret = insn_get_displacement(insn); + if (ret) + return ret; if (inat_has_moffset(insn->attr)) { if (!__get_moffset(insn)) @@ -703,11 +691,9 @@ int insn_get_length(struct insn *insn) if (insn->length) return 0; - if (!insn->immediate.got) { - ret = insn_get_immediate(insn); - if (ret) - return ret; - } + ret = insn_get_immediate(insn); + if (ret) + return ret; insn->length = (unsigned char)((unsigned long)insn->next_byte - (unsigned long)insn->kaddr); diff --git a/arch/x86/lib/msr-smp.c b/arch/x86/lib/msr-smp.c index 40bbe56bde32..acd463d887e1 100644 --- a/arch/x86/lib/msr-smp.c +++ b/arch/x86/lib/msr-smp.c @@ -9,10 +9,9 @@ static void __rdmsr_on_cpu(void *info) { struct msr_info *rv = info; struct msr *reg; - int this_cpu = raw_smp_processor_id(); if (rv->msrs) - reg = per_cpu_ptr(rv->msrs, this_cpu); + reg = this_cpu_ptr(rv->msrs); else reg = &rv->reg; @@ -23,10 +22,9 @@ static void __wrmsr_on_cpu(void *info) { struct msr_info *rv = info; struct msr *reg; - int this_cpu = raw_smp_processor_id(); if (rv->msrs) - reg = per_cpu_ptr(rv->msrs, this_cpu); + reg = this_cpu_ptr(rv->msrs); else reg = &rv->reg; @@ -97,7 +95,7 @@ int wrmsrl_on_cpu(unsigned int cpu, u32 msr_no, u64 q) EXPORT_SYMBOL(wrmsrl_on_cpu); static void __rwmsr_on_cpus(const struct cpumask *mask, u32 msr_no, - struct msr *msrs, + struct msr __percpu *msrs, void (*msr_func) (void *info)) { struct msr_info rv; @@ -124,7 +122,7 @@ static void __rwmsr_on_cpus(const struct cpumask *mask, u32 msr_no, * @msrs: array of MSR values * */ -void rdmsr_on_cpus(const struct cpumask *mask, u32 msr_no, struct msr *msrs) +void rdmsr_on_cpus(const struct cpumask *mask, u32 msr_no, struct msr __percpu *msrs) { __rwmsr_on_cpus(mask, msr_no, msrs, __rdmsr_on_cpu); } @@ -138,7 +136,7 @@ EXPORT_SYMBOL(rdmsr_on_cpus); * @msrs: array of MSR values * */ -void wrmsr_on_cpus(const struct cpumask *mask, u32 msr_no, struct msr *msrs) +void wrmsr_on_cpus(const struct cpumask *mask, u32 msr_no, struct msr __percpu *msrs) { __rwmsr_on_cpus(mask, msr_no, msrs, __wrmsr_on_cpu); } diff --git a/arch/x86/lib/msr.c b/arch/x86/lib/msr.c index 47fd9bd6b91d..4bf4fad5b148 100644 --- a/arch/x86/lib/msr.c +++ b/arch/x86/lib/msr.c @@ -6,9 +6,9 @@ #define CREATE_TRACE_POINTS #include <asm/msr-trace.h> -struct msr *msrs_alloc(void) +struct msr __percpu *msrs_alloc(void) { - struct msr *msrs = NULL; + struct msr __percpu *msrs = NULL; msrs = alloc_percpu(struct msr); if (!msrs) { @@ -20,7 +20,7 @@ struct msr *msrs_alloc(void) } EXPORT_SYMBOL(msrs_alloc); -void msrs_free(struct msr *msrs) +void msrs_free(struct msr __percpu *msrs) { free_percpu(msrs); } diff --git a/arch/x86/lib/putuser.S b/arch/x86/lib/putuser.S index 2877f5934177..975c9c18263d 100644 --- a/arch/x86/lib/putuser.S +++ b/arch/x86/lib/putuser.S @@ -133,15 +133,15 @@ SYM_CODE_START_LOCAL(__put_user_handle_exception) RET SYM_CODE_END(__put_user_handle_exception) - _ASM_EXTABLE(1b, __put_user_handle_exception) - _ASM_EXTABLE(2b, __put_user_handle_exception) - _ASM_EXTABLE(3b, __put_user_handle_exception) - _ASM_EXTABLE(4b, __put_user_handle_exception) - _ASM_EXTABLE(5b, __put_user_handle_exception) - _ASM_EXTABLE(6b, __put_user_handle_exception) - _ASM_EXTABLE(7b, __put_user_handle_exception) - _ASM_EXTABLE(9b, __put_user_handle_exception) + _ASM_EXTABLE_UA(1b, __put_user_handle_exception) + _ASM_EXTABLE_UA(2b, __put_user_handle_exception) + _ASM_EXTABLE_UA(3b, __put_user_handle_exception) + _ASM_EXTABLE_UA(4b, __put_user_handle_exception) + _ASM_EXTABLE_UA(5b, __put_user_handle_exception) + _ASM_EXTABLE_UA(6b, __put_user_handle_exception) + _ASM_EXTABLE_UA(7b, __put_user_handle_exception) + _ASM_EXTABLE_UA(9b, __put_user_handle_exception) #ifdef CONFIG_X86_32 - _ASM_EXTABLE(8b, __put_user_handle_exception) - _ASM_EXTABLE(10b, __put_user_handle_exception) + _ASM_EXTABLE_UA(8b, __put_user_handle_exception) + _ASM_EXTABLE_UA(10b, __put_user_handle_exception) #endif diff --git a/arch/x86/lib/retpoline.S b/arch/x86/lib/retpoline.S index 7b2589877d06..721b528da9ac 100644 --- a/arch/x86/lib/retpoline.S +++ b/arch/x86/lib/retpoline.S @@ -71,7 +71,7 @@ SYM_CODE_END(__x86_indirect_thunk_array) #include <asm/GEN-for-each-reg.h> #undef GEN -#ifdef CONFIG_CALL_DEPTH_TRACKING +#ifdef CONFIG_MITIGATION_CALL_DEPTH_TRACKING .macro CALL_THUNK reg .align RETPOLINE_THUNK_SIZE @@ -127,7 +127,7 @@ SYM_CODE_END(__x86_indirect_jump_thunk_array) #undef GEN #endif -#ifdef CONFIG_RETHUNK +#ifdef CONFIG_MITIGATION_RETHUNK /* * Be careful here: that label cannot really be removed because in @@ -138,7 +138,7 @@ SYM_CODE_END(__x86_indirect_jump_thunk_array) */ .section .text..__x86.return_thunk -#ifdef CONFIG_CPU_SRSO +#ifdef CONFIG_MITIGATION_SRSO /* * srso_alias_untrain_ret() and srso_alias_safe_ret() are placed at @@ -225,12 +225,12 @@ SYM_CODE_END(srso_return_thunk) #define JMP_SRSO_UNTRAIN_RET "jmp srso_untrain_ret" #define JMP_SRSO_ALIAS_UNTRAIN_RET "jmp srso_alias_untrain_ret" -#else /* !CONFIG_CPU_SRSO */ +#else /* !CONFIG_MITIGATION_SRSO */ #define JMP_SRSO_UNTRAIN_RET "ud2" #define JMP_SRSO_ALIAS_UNTRAIN_RET "ud2" -#endif /* CONFIG_CPU_SRSO */ +#endif /* CONFIG_MITIGATION_SRSO */ -#ifdef CONFIG_CPU_UNRET_ENTRY +#ifdef CONFIG_MITIGATION_UNRET_ENTRY /* * Some generic notes on the untraining sequences: @@ -312,11 +312,11 @@ SYM_CODE_END(retbleed_return_thunk) SYM_FUNC_END(retbleed_untrain_ret) #define JMP_RETBLEED_UNTRAIN_RET "jmp retbleed_untrain_ret" -#else /* !CONFIG_CPU_UNRET_ENTRY */ +#else /* !CONFIG_MITIGATION_UNRET_ENTRY */ #define JMP_RETBLEED_UNTRAIN_RET "ud2" -#endif /* CONFIG_CPU_UNRET_ENTRY */ +#endif /* CONFIG_MITIGATION_UNRET_ENTRY */ -#if defined(CONFIG_CPU_UNRET_ENTRY) || defined(CONFIG_CPU_SRSO) +#if defined(CONFIG_MITIGATION_UNRET_ENTRY) || defined(CONFIG_MITIGATION_SRSO) SYM_FUNC_START(entry_untrain_ret) ALTERNATIVE_2 JMP_RETBLEED_UNTRAIN_RET, \ @@ -325,9 +325,9 @@ SYM_FUNC_START(entry_untrain_ret) SYM_FUNC_END(entry_untrain_ret) __EXPORT_THUNK(entry_untrain_ret) -#endif /* CONFIG_CPU_UNRET_ENTRY || CONFIG_CPU_SRSO */ +#endif /* CONFIG_MITIGATION_UNRET_ENTRY || CONFIG_MITIGATION_SRSO */ -#ifdef CONFIG_CALL_DEPTH_TRACKING +#ifdef CONFIG_MITIGATION_CALL_DEPTH_TRACKING .align 64 SYM_FUNC_START(call_depth_return_thunk) @@ -359,7 +359,7 @@ SYM_FUNC_START(call_depth_return_thunk) int3 SYM_FUNC_END(call_depth_return_thunk) -#endif /* CONFIG_CALL_DEPTH_TRACKING */ +#endif /* CONFIG_MITIGATION_CALL_DEPTH_TRACKING */ /* * This function name is magical and is used by -mfunction-return=thunk-extern @@ -369,21 +369,18 @@ SYM_FUNC_END(call_depth_return_thunk) * 'JMP __x86_return_thunk' sites are changed to something else by * apply_returns(). * - * This should be converted eventually to call a warning function which - * should scream loudly when the default return thunk is called after - * alternatives have been applied. - * - * That warning function cannot BUG() because the bug splat cannot be - * displayed in all possible configurations, leading to users not really - * knowing why the machine froze. + * The ALTERNATIVE below adds a really loud warning to catch the case + * where the insufficient default return thunk ends up getting used for + * whatever reason like miscompilation or failure of + * objtool/alternatives/etc to patch all the return sites. */ SYM_CODE_START(__x86_return_thunk) UNWIND_HINT_FUNC ANNOTATE_NOENDBR - ANNOTATE_UNRET_SAFE - ret + ALTERNATIVE __stringify(ANNOTATE_UNRET_SAFE; ret), \ + "jmp warn_thunk_thunk", X86_FEATURE_ALWAYS int3 SYM_CODE_END(__x86_return_thunk) EXPORT_SYMBOL(__x86_return_thunk) -#endif /* CONFIG_RETHUNK */ +#endif /* CONFIG_MITIGATION_RETHUNK */ diff --git a/arch/x86/lib/x86-opcode-map.txt b/arch/x86/lib/x86-opcode-map.txt index 5168ee0360b2..12af572201a2 100644 --- a/arch/x86/lib/x86-opcode-map.txt +++ b/arch/x86/lib/x86-opcode-map.txt @@ -1051,8 +1051,8 @@ GrpTable: Grp6 EndTable GrpTable: Grp7 -0: SGDT Ms | VMCALL (001),(11B) | VMLAUNCH (010),(11B) | VMRESUME (011),(11B) | VMXOFF (100),(11B) | PCONFIG (101),(11B) | ENCLV (000),(11B) -1: SIDT Ms | MONITOR (000),(11B) | MWAIT (001),(11B) | CLAC (010),(11B) | STAC (011),(11B) | ENCLS (111),(11B) +0: SGDT Ms | VMCALL (001),(11B) | VMLAUNCH (010),(11B) | VMRESUME (011),(11B) | VMXOFF (100),(11B) | PCONFIG (101),(11B) | ENCLV (000),(11B) | WRMSRNS (110),(11B) +1: SIDT Ms | MONITOR (000),(11B) | MWAIT (001),(11B) | CLAC (010),(11B) | STAC (011),(11B) | ENCLS (111),(11B) | ERETU (F3),(010),(11B) | ERETS (F2),(010),(11B) 2: LGDT Ms | XGETBV (000),(11B) | XSETBV (001),(11B) | VMFUNC (100),(11B) | XEND (101)(11B) | XTEST (110)(11B) | ENCLU (111),(11B) 3: LIDT Ms 4: SMSW Mw/Rv diff --git a/arch/x86/mm/Makefile b/arch/x86/mm/Makefile index c80febc44cd2..428048e73bd2 100644 --- a/arch/x86/mm/Makefile +++ b/arch/x86/mm/Makefile @@ -16,6 +16,7 @@ KASAN_SANITIZE_pgprot.o := n KCSAN_SANITIZE := n # Avoid recursion by not calling KMSAN hooks for CEA code. KMSAN_SANITIZE_cpu_entry_area.o := n +KMSAN_SANITIZE_mem_encrypt_identity.o := n ifdef CONFIG_FUNCTION_TRACER CFLAGS_REMOVE_mem_encrypt.o = -pg @@ -60,7 +61,7 @@ obj-$(CONFIG_NUMA_EMU) += numa_emulation.o obj-$(CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS) += pkeys.o obj-$(CONFIG_RANDOMIZE_MEMORY) += kaslr.o -obj-$(CONFIG_PAGE_TABLE_ISOLATION) += pti.o +obj-$(CONFIG_MITIGATION_PAGE_TABLE_ISOLATION) += pti.o obj-$(CONFIG_X86_MEM_ENCRYPT) += mem_encrypt.o obj-$(CONFIG_AMD_MEM_ENCRYPT) += mem_encrypt_amd.o diff --git a/arch/x86/mm/amdtopology.c b/arch/x86/mm/amdtopology.c index b3ca7d23e4b0..9332b36a1091 100644 --- a/arch/x86/mm/amdtopology.c +++ b/arch/x86/mm/amdtopology.c @@ -54,13 +54,11 @@ static __init int find_northbridge(void) int __init amd_numa_init(void) { - u64 start = PFN_PHYS(0); + unsigned int numnodes, cores, apicid; + u64 prevbase, start = PFN_PHYS(0); u64 end = PFN_PHYS(max_pfn); - unsigned numnodes; - u64 prevbase; - int i, j, nb; u32 nodeid, reg; - unsigned int bits, cores, apicid_base; + int i, j, nb; if (!early_pci_allowed()) return -EINVAL; @@ -158,26 +156,18 @@ int __init amd_numa_init(void) return -ENOENT; /* - * We seem to have valid NUMA configuration. Map apicids to nodes - * using the coreid bits from early_identify_cpu. + * We seem to have valid NUMA configuration. Map apicids to nodes + * using the size of the core domain in the APIC space. */ - bits = boot_cpu_data.x86_coreid_bits; - cores = 1 << bits; - apicid_base = 0; + cores = topology_get_domain_size(TOPO_CORE_DOMAIN); - /* - * get boot-time SMP configuration: - */ - early_get_smp_config(); + apicid = boot_cpu_physical_apicid; + if (apicid > 0) + pr_info("BSP APIC ID: %02x\n", apicid); - if (boot_cpu_physical_apicid > 0) { - pr_info("BSP APIC ID: %02x\n", boot_cpu_physical_apicid); - apicid_base = boot_cpu_physical_apicid; + for_each_node_mask(i, numa_nodes_parsed) { + for (j = 0; j < cores; j++, apicid++) + set_apicid_to_node(apicid, i); } - - for_each_node_mask(i, numa_nodes_parsed) - for (j = apicid_base; j < cores + apicid_base; j++) - set_apicid_to_node((i << bits) + j, i); - return 0; } diff --git a/arch/x86/mm/debug_pagetables.c b/arch/x86/mm/debug_pagetables.c index b43301cb2a80..ae5c213a1cb0 100644 --- a/arch/x86/mm/debug_pagetables.c +++ b/arch/x86/mm/debug_pagetables.c @@ -22,7 +22,7 @@ static int ptdump_curknl_show(struct seq_file *m, void *v) DEFINE_SHOW_ATTRIBUTE(ptdump_curknl); -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION static int ptdump_curusr_show(struct seq_file *m, void *v) { if (current->mm->pgd) @@ -54,7 +54,7 @@ static int __init pt_dump_debug_init(void) debugfs_create_file("current_kernel", 0400, dir, NULL, &ptdump_curknl_fops); -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION debugfs_create_file("current_user", 0400, dir, NULL, &ptdump_curusr_fops); #endif diff --git a/arch/x86/mm/dump_pagetables.c b/arch/x86/mm/dump_pagetables.c index e1b599ecbbc2..b7b88c1d91ec 100644 --- a/arch/x86/mm/dump_pagetables.c +++ b/arch/x86/mm/dump_pagetables.c @@ -408,7 +408,7 @@ void ptdump_walk_pgd_level_debugfs(struct seq_file *m, struct mm_struct *mm, bool user) { pgd_t *pgd = mm->pgd; -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION if (user && boot_cpu_has(X86_FEATURE_PTI)) pgd = kernel_to_user_pgdp(pgd); #endif @@ -418,7 +418,7 @@ EXPORT_SYMBOL_GPL(ptdump_walk_pgd_level_debugfs); void ptdump_walk_user_pgd_level_checkwx(void) { -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION pgd_t *pgd = INIT_PGD; if (!(__supported_pte_mask & _PAGE_NX) || diff --git a/arch/x86/mm/extable.c b/arch/x86/mm/extable.c index 271dcb2deabc..b522933bfa56 100644 --- a/arch/x86/mm/extable.c +++ b/arch/x86/mm/extable.c @@ -6,6 +6,7 @@ #include <xen/xen.h> #include <asm/fpu/api.h> +#include <asm/fred.h> #include <asm/sev.h> #include <asm/traps.h> #include <asm/kdebug.h> @@ -223,6 +224,79 @@ static bool ex_handler_ucopy_len(const struct exception_table_entry *fixup, return ex_handler_uaccess(fixup, regs, trapnr, fault_address); } +#ifdef CONFIG_X86_FRED +static bool ex_handler_eretu(const struct exception_table_entry *fixup, + struct pt_regs *regs, unsigned long error_code) +{ + struct pt_regs *uregs = (struct pt_regs *)(regs->sp - offsetof(struct pt_regs, orig_ax)); + unsigned short ss = uregs->ss; + unsigned short cs = uregs->cs; + + /* + * Move the NMI bit from the invalid stack frame, which caused ERETU + * to fault, to the fault handler's stack frame, thus to unblock NMI + * with the fault handler's ERETS instruction ASAP if NMI is blocked. + */ + regs->fred_ss.nmi = uregs->fred_ss.nmi; + + /* + * Sync event information to uregs, i.e., the ERETU return frame, but + * is it safe to write to the ERETU return frame which is just above + * current event stack frame? + * + * The RSP used by FRED to push a stack frame is not the value in %rsp, + * it is calculated from %rsp with the following 2 steps: + * 1) RSP = %rsp - (IA32_FRED_CONFIG & 0x1c0) // Reserve N*64 bytes + * 2) RSP = RSP & ~0x3f // Align to a 64-byte cache line + * when an event delivery doesn't trigger a stack level change. + * + * Here is an example with N*64 (N=1) bytes reserved: + * + * 64-byte cache line ==> ______________ + * |___Reserved___| + * |__Event_data__| + * |_____SS_______| + * |_____RSP______| + * |_____FLAGS____| + * |_____CS_______| + * |_____IP_______| + * 64-byte cache line ==> |__Error_code__| <== ERETU return frame + * |______________| + * |______________| + * |______________| + * |______________| + * |______________| + * |______________| + * |______________| + * 64-byte cache line ==> |______________| <== RSP after step 1) and 2) + * |___Reserved___| + * |__Event_data__| + * |_____SS_______| + * |_____RSP______| + * |_____FLAGS____| + * |_____CS_______| + * |_____IP_______| + * 64-byte cache line ==> |__Error_code__| <== ERETS return frame + * + * Thus a new FRED stack frame will always be pushed below a previous + * FRED stack frame ((N*64) bytes may be reserved between), and it is + * safe to write to a previous FRED stack frame as they never overlap. + */ + fred_info(uregs)->edata = fred_event_data(regs); + uregs->ssx = regs->ssx; + uregs->fred_ss.ss = ss; + /* The NMI bit was moved away above */ + uregs->fred_ss.nmi = 0; + uregs->csx = regs->csx; + uregs->fred_cs.sl = 0; + uregs->fred_cs.wfe = 0; + uregs->cs = cs; + uregs->orig_ax = error_code; + + return ex_handler_default(fixup, regs); +} +#endif + int ex_get_fixup_type(unsigned long ip) { const struct exception_table_entry *e = search_exception_tables(ip); @@ -300,6 +374,10 @@ int fixup_exception(struct pt_regs *regs, int trapnr, unsigned long error_code, return ex_handler_ucopy_len(e, regs, trapnr, fault_addr, reg, imm); case EX_TYPE_ZEROPAD: return ex_handler_zeropad(e, regs, fault_addr); +#ifdef CONFIG_X86_FRED + case EX_TYPE_ERETU: + return ex_handler_eretu(e, regs, error_code); +#endif } BUG(); } diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index 679b09cfe241..402e08f6b7ec 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -34,6 +34,8 @@ #include <asm/kvm_para.h> /* kvm_handle_async_pf */ #include <asm/vdso.h> /* fixup_vdso_exception() */ #include <asm/irq_stack.h> +#include <asm/fred.h> +#include <asm/sev.h> /* snp_dump_hva_rmpentry() */ #define CREATE_TRACE_POINTS #include <asm/trace/exceptions.h> @@ -547,6 +549,7 @@ show_fault_oops(struct pt_regs *regs, unsigned long error_code, unsigned long ad !(error_code & X86_PF_PROT) ? "not-present page" : (error_code & X86_PF_RSVD) ? "reserved bit violation" : (error_code & X86_PF_PK) ? "protection keys violation" : + (error_code & X86_PF_RMP) ? "RMP violation" : "permissions violation"); if (!(error_code & X86_PF_USER) && user_mode(regs)) { @@ -579,6 +582,9 @@ show_fault_oops(struct pt_regs *regs, unsigned long error_code, unsigned long ad } dump_pagetable(address); + + if (error_code & X86_PF_RMP) + snp_dump_hva_rmpentry(address); } static noinline void @@ -798,15 +804,6 @@ show_signal_msg(struct pt_regs *regs, unsigned long error_code, show_opcodes(regs, loglvl); } -/* - * The (legacy) vsyscall page is the long page in the kernel portion - * of the address space that has user-accessible permissions. - */ -static bool is_vsyscall_vaddr(unsigned long vaddr) -{ - return unlikely((vaddr & PAGE_MASK) == VSYSCALL_ADDR); -} - static void __bad_area_nosemaphore(struct pt_regs *regs, unsigned long error_code, unsigned long address, u32 pkey, int si_code) @@ -1302,21 +1299,14 @@ void do_user_addr_fault(struct pt_regs *regs, return; } - /* - * It's safe to allow irq's after cr2 has been saved and the - * vmalloc fault has been handled. - * - * User-mode registers count as a user access even for any - * potential system fault or CPU buglet: - */ - if (user_mode(regs)) { - local_irq_enable(); - flags |= FAULT_FLAG_USER; - } else { - if (regs->flags & X86_EFLAGS_IF) - local_irq_enable(); + /* Legacy check - remove this after verifying that it doesn't trigger */ + if (WARN_ON_ONCE(!(regs->flags & X86_EFLAGS_IF))) { + bad_area_nosemaphore(regs, error_code, address); + return; } + local_irq_enable(); + perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address); /* @@ -1332,6 +1322,14 @@ void do_user_addr_fault(struct pt_regs *regs, if (error_code & X86_PF_INSTR) flags |= FAULT_FLAG_INSTRUCTION; + /* + * We set FAULT_FLAG_USER based on the register state, not + * based on X86_PF_USER. User space accesses that cause + * system page faults are still user accesses. + */ + if (user_mode(regs)) + flags |= FAULT_FLAG_USER; + #ifdef CONFIG_X86_64 /* * Faults in the vsyscall page might need emulation. The @@ -1518,8 +1516,10 @@ handle_page_fault(struct pt_regs *regs, unsigned long error_code, DEFINE_IDTENTRY_RAW_ERRORCODE(exc_page_fault) { - unsigned long address = read_cr2(); irqentry_state_t state; + unsigned long address; + + address = cpu_feature_enabled(X86_FEATURE_FRED) ? fred_event_data(regs) : read_cr2(); prefetchw(¤t->mm->mmap_lock); diff --git a/arch/x86/mm/ident_map.c b/arch/x86/mm/ident_map.c index 968d7005f4a7..f50cc210a981 100644 --- a/arch/x86/mm/ident_map.c +++ b/arch/x86/mm/ident_map.c @@ -26,18 +26,31 @@ static int ident_pud_init(struct x86_mapping_info *info, pud_t *pud_page, for (; addr < end; addr = next) { pud_t *pud = pud_page + pud_index(addr); pmd_t *pmd; + bool use_gbpage; next = (addr & PUD_MASK) + PUD_SIZE; if (next > end) next = end; - if (info->direct_gbpages) { - pud_t pudval; + /* if this is already a gbpage, this portion is already mapped */ + if (pud_large(*pud)) + continue; + + /* Is using a gbpage allowed? */ + use_gbpage = info->direct_gbpages; - if (pud_present(*pud)) - continue; + /* Don't use gbpage if it maps more than the requested region. */ + /* at the begining: */ + use_gbpage &= ((addr & ~PUD_MASK) == 0); + /* ... or at the end: */ + use_gbpage &= ((next & ~PUD_MASK) == 0); + + /* Never overwrite existing mappings */ + use_gbpage &= !pud_present(*pud); + + if (use_gbpage) { + pud_t pudval; - addr &= PUD_MASK; pudval = __pud((addr - info->offset) | info->page_flag); set_pud(pud, pudval); continue; diff --git a/arch/x86/mm/maccess.c b/arch/x86/mm/maccess.c index 6993f026adec..42115ac079cf 100644 --- a/arch/x86/mm/maccess.c +++ b/arch/x86/mm/maccess.c @@ -3,6 +3,8 @@ #include <linux/uaccess.h> #include <linux/kernel.h> +#include <asm/vsyscall.h> + #ifdef CONFIG_X86_64 bool copy_from_kernel_nofault_allowed(const void *unsafe_src, size_t size) { @@ -16,6 +18,14 @@ bool copy_from_kernel_nofault_allowed(const void *unsafe_src, size_t size) return false; /* + * Reading from the vsyscall page may cause an unhandled fault in + * certain cases. Though it is at an address above TASK_SIZE_MAX, it is + * usually considered as a user space address. + */ + if (is_vsyscall_vaddr(vaddr)) + return false; + + /* * Allow everything during early boot before 'x86_virt_bits' * is initialized. Needed for instruction decoding in early * exception handlers. diff --git a/arch/x86/mm/mem_encrypt.c b/arch/x86/mm/mem_encrypt.c index c290c55b632b..6f3b3e028718 100644 --- a/arch/x86/mm/mem_encrypt.c +++ b/arch/x86/mm/mem_encrypt.c @@ -14,6 +14,8 @@ #include <linux/mem_encrypt.h> #include <linux/virtio_anchor.h> +#include <asm/sev.h> + /* Override for DMA direct allocation check - ARCH_HAS_FORCE_DMA_UNENCRYPTED */ bool force_dma_unencrypted(struct device *dev) { @@ -42,38 +44,45 @@ bool force_dma_unencrypted(struct device *dev) static void print_mem_encrypt_feature_info(void) { - pr_info("Memory Encryption Features active:"); - - if (cpu_feature_enabled(X86_FEATURE_TDX_GUEST)) { - pr_cont(" Intel TDX\n"); - return; - } + pr_info("Memory Encryption Features active: "); - pr_cont(" AMD"); + switch (cc_vendor) { + case CC_VENDOR_INTEL: + pr_cont("Intel TDX\n"); + break; + case CC_VENDOR_AMD: + pr_cont("AMD"); - /* Secure Memory Encryption */ - if (cc_platform_has(CC_ATTR_HOST_MEM_ENCRYPT)) { + /* Secure Memory Encryption */ + if (cc_platform_has(CC_ATTR_HOST_MEM_ENCRYPT)) { /* * SME is mutually exclusive with any of the SEV * features below. - */ - pr_cont(" SME\n"); - return; - } + */ + pr_cont(" SME\n"); + return; + } - /* Secure Encrypted Virtualization */ - if (cc_platform_has(CC_ATTR_GUEST_MEM_ENCRYPT)) - pr_cont(" SEV"); + /* Secure Encrypted Virtualization */ + if (cc_platform_has(CC_ATTR_GUEST_MEM_ENCRYPT)) + pr_cont(" SEV"); + + /* Encrypted Register State */ + if (cc_platform_has(CC_ATTR_GUEST_STATE_ENCRYPT)) + pr_cont(" SEV-ES"); - /* Encrypted Register State */ - if (cc_platform_has(CC_ATTR_GUEST_STATE_ENCRYPT)) - pr_cont(" SEV-ES"); + /* Secure Nested Paging */ + if (cc_platform_has(CC_ATTR_GUEST_SEV_SNP)) + pr_cont(" SEV-SNP"); - /* Secure Nested Paging */ - if (cc_platform_has(CC_ATTR_GUEST_SEV_SNP)) - pr_cont(" SEV-SNP"); + pr_cont("\n"); - pr_cont("\n"); + sev_show_status(); + + break; + default: + pr_cont("Unknown\n"); + } } /* Architecture __weak replacement functions */ diff --git a/arch/x86/mm/mem_encrypt_identity.c b/arch/x86/mm/mem_encrypt_identity.c index d73aeb16417f..64b5005d49e5 100644 --- a/arch/x86/mm/mem_encrypt_identity.c +++ b/arch/x86/mm/mem_encrypt_identity.c @@ -41,9 +41,9 @@ #include <linux/mem_encrypt.h> #include <linux/cc_platform.h> +#include <asm/init.h> #include <asm/setup.h> #include <asm/sections.h> -#include <asm/cmdline.h> #include <asm/coco.h> #include <asm/sev.h> @@ -95,11 +95,7 @@ struct sme_populate_pgd_data { */ static char sme_workarea[2 * PMD_SIZE] __section(".init.scratch"); -static char sme_cmdline_arg[] __initdata = "mem_encrypt"; -static char sme_cmdline_on[] __initdata = "on"; -static char sme_cmdline_off[] __initdata = "off"; - -static void __init sme_clear_pgd(struct sme_populate_pgd_data *ppd) +static void __head sme_clear_pgd(struct sme_populate_pgd_data *ppd) { unsigned long pgd_start, pgd_end, pgd_size; pgd_t *pgd_p; @@ -114,7 +110,7 @@ static void __init sme_clear_pgd(struct sme_populate_pgd_data *ppd) memset(pgd_p, 0, pgd_size); } -static pud_t __init *sme_prepare_pgd(struct sme_populate_pgd_data *ppd) +static pud_t __head *sme_prepare_pgd(struct sme_populate_pgd_data *ppd) { pgd_t *pgd; p4d_t *p4d; @@ -151,7 +147,7 @@ static pud_t __init *sme_prepare_pgd(struct sme_populate_pgd_data *ppd) return pud; } -static void __init sme_populate_pgd_large(struct sme_populate_pgd_data *ppd) +static void __head sme_populate_pgd_large(struct sme_populate_pgd_data *ppd) { pud_t *pud; pmd_t *pmd; @@ -167,7 +163,7 @@ static void __init sme_populate_pgd_large(struct sme_populate_pgd_data *ppd) set_pmd(pmd, __pmd(ppd->paddr | ppd->pmd_flags)); } -static void __init sme_populate_pgd(struct sme_populate_pgd_data *ppd) +static void __head sme_populate_pgd(struct sme_populate_pgd_data *ppd) { pud_t *pud; pmd_t *pmd; @@ -193,7 +189,7 @@ static void __init sme_populate_pgd(struct sme_populate_pgd_data *ppd) set_pte(pte, __pte(ppd->paddr | ppd->pte_flags)); } -static void __init __sme_map_range_pmd(struct sme_populate_pgd_data *ppd) +static void __head __sme_map_range_pmd(struct sme_populate_pgd_data *ppd) { while (ppd->vaddr < ppd->vaddr_end) { sme_populate_pgd_large(ppd); @@ -203,7 +199,7 @@ static void __init __sme_map_range_pmd(struct sme_populate_pgd_data *ppd) } } -static void __init __sme_map_range_pte(struct sme_populate_pgd_data *ppd) +static void __head __sme_map_range_pte(struct sme_populate_pgd_data *ppd) { while (ppd->vaddr < ppd->vaddr_end) { sme_populate_pgd(ppd); @@ -213,7 +209,7 @@ static void __init __sme_map_range_pte(struct sme_populate_pgd_data *ppd) } } -static void __init __sme_map_range(struct sme_populate_pgd_data *ppd, +static void __head __sme_map_range(struct sme_populate_pgd_data *ppd, pmdval_t pmd_flags, pteval_t pte_flags) { unsigned long vaddr_end; @@ -237,22 +233,22 @@ static void __init __sme_map_range(struct sme_populate_pgd_data *ppd, __sme_map_range_pte(ppd); } -static void __init sme_map_range_encrypted(struct sme_populate_pgd_data *ppd) +static void __head sme_map_range_encrypted(struct sme_populate_pgd_data *ppd) { __sme_map_range(ppd, PMD_FLAGS_ENC, PTE_FLAGS_ENC); } -static void __init sme_map_range_decrypted(struct sme_populate_pgd_data *ppd) +static void __head sme_map_range_decrypted(struct sme_populate_pgd_data *ppd) { __sme_map_range(ppd, PMD_FLAGS_DEC, PTE_FLAGS_DEC); } -static void __init sme_map_range_decrypted_wp(struct sme_populate_pgd_data *ppd) +static void __head sme_map_range_decrypted_wp(struct sme_populate_pgd_data *ppd) { __sme_map_range(ppd, PMD_FLAGS_DEC_WP, PTE_FLAGS_DEC_WP); } -static unsigned long __init sme_pgtable_calc(unsigned long len) +static unsigned long __head sme_pgtable_calc(unsigned long len) { unsigned long entries = 0, tables = 0; @@ -289,7 +285,7 @@ static unsigned long __init sme_pgtable_calc(unsigned long len) return entries + tables; } -void __init sme_encrypt_kernel(struct boot_params *bp) +void __head sme_encrypt_kernel(struct boot_params *bp) { unsigned long workarea_start, workarea_end, workarea_len; unsigned long execute_start, execute_end, execute_len; @@ -305,7 +301,8 @@ void __init sme_encrypt_kernel(struct boot_params *bp) * instrumentation or checking boot_cpu_data in the cc_platform_has() * function. */ - if (!sme_get_me_mask() || sev_status & MSR_AMD64_SEV_ENABLED) + if (!sme_get_me_mask() || + RIP_REL_REF(sev_status) & MSR_AMD64_SEV_ENABLED) return; /* @@ -323,9 +320,8 @@ void __init sme_encrypt_kernel(struct boot_params *bp) * memory from being cached. */ - /* Physical addresses gives us the identity mapped virtual addresses */ - kernel_start = __pa_symbol(_text); - kernel_end = ALIGN(__pa_symbol(_end), PMD_SIZE); + kernel_start = (unsigned long)RIP_REL_REF(_text); + kernel_end = ALIGN((unsigned long)RIP_REL_REF(_end), PMD_SIZE); kernel_len = kernel_end - kernel_start; initrd_start = 0; @@ -343,14 +339,6 @@ void __init sme_encrypt_kernel(struct boot_params *bp) #endif /* - * We're running identity mapped, so we must obtain the address to the - * SME encryption workarea using rip-relative addressing. - */ - asm ("lea sme_workarea(%%rip), %0" - : "=r" (workarea_start) - : "p" (sme_workarea)); - - /* * Calculate required number of workarea bytes needed: * executable encryption area size: * stack page (PAGE_SIZE) @@ -359,7 +347,7 @@ void __init sme_encrypt_kernel(struct boot_params *bp) * pagetable structures for the encryption of the kernel * pagetable structures for workarea (in case not currently mapped) */ - execute_start = workarea_start; + execute_start = workarea_start = (unsigned long)RIP_REL_REF(sme_workarea); execute_end = execute_start + (PAGE_SIZE * 2) + PMD_SIZE; execute_len = execute_end - execute_start; @@ -502,14 +490,11 @@ void __init sme_encrypt_kernel(struct boot_params *bp) native_write_cr3(__native_read_cr3()); } -void __init sme_enable(struct boot_params *bp) +void __head sme_enable(struct boot_params *bp) { - const char *cmdline_ptr, *cmdline_arg, *cmdline_on, *cmdline_off; unsigned int eax, ebx, ecx, edx; unsigned long feature_mask; - bool active_by_default; unsigned long me_mask; - char buffer[16]; bool snp; u64 msr; @@ -543,15 +528,18 @@ void __init sme_enable(struct boot_params *bp) me_mask = 1UL << (ebx & 0x3f); /* Check the SEV MSR whether SEV or SME is enabled */ - sev_status = __rdmsr(MSR_AMD64_SEV); - feature_mask = (sev_status & MSR_AMD64_SEV_ENABLED) ? AMD_SEV_BIT : AMD_SME_BIT; + RIP_REL_REF(sev_status) = msr = __rdmsr(MSR_AMD64_SEV); + feature_mask = (msr & MSR_AMD64_SEV_ENABLED) ? AMD_SEV_BIT : AMD_SME_BIT; /* The SEV-SNP CC blob should never be present unless SEV-SNP is enabled. */ - if (snp && !(sev_status & MSR_AMD64_SEV_SNP_ENABLED)) + if (snp && !(msr & MSR_AMD64_SEV_SNP_ENABLED)) snp_abort(); /* Check if memory encryption is enabled */ if (feature_mask == AMD_SME_BIT) { + if (!(bp->hdr.xloadflags & XLF_MEM_ENCRYPTION)) + return; + /* * No SME if Hypervisor bit is set. This check is here to * prevent a guest from trying to enable SME. For running as a @@ -571,48 +559,10 @@ void __init sme_enable(struct boot_params *bp) msr = __rdmsr(MSR_AMD64_SYSCFG); if (!(msr & MSR_AMD64_SYSCFG_MEM_ENCRYPT)) return; - } else { - /* SEV state cannot be controlled by a command line option */ - sme_me_mask = me_mask; - goto out; } - /* - * Fixups have not been applied to phys_base yet and we're running - * identity mapped, so we must obtain the address to the SME command - * line argument data using rip-relative addressing. - */ - asm ("lea sme_cmdline_arg(%%rip), %0" - : "=r" (cmdline_arg) - : "p" (sme_cmdline_arg)); - asm ("lea sme_cmdline_on(%%rip), %0" - : "=r" (cmdline_on) - : "p" (sme_cmdline_on)); - asm ("lea sme_cmdline_off(%%rip), %0" - : "=r" (cmdline_off) - : "p" (sme_cmdline_off)); - - if (IS_ENABLED(CONFIG_AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT)) - active_by_default = true; - else - active_by_default = false; - - cmdline_ptr = (const char *)((u64)bp->hdr.cmd_line_ptr | - ((u64)bp->ext_cmd_line_ptr << 32)); - - if (cmdline_find_option(cmdline_ptr, cmdline_arg, buffer, sizeof(buffer)) < 0) - return; - - if (!strncmp(buffer, cmdline_on, sizeof(buffer))) - sme_me_mask = me_mask; - else if (!strncmp(buffer, cmdline_off, sizeof(buffer))) - sme_me_mask = 0; - else - sme_me_mask = active_by_default ? me_mask : 0; -out: - if (sme_me_mask) { - physical_mask &= ~sme_me_mask; - cc_vendor = CC_VENDOR_AMD; - cc_set_mask(sme_me_mask); - } + RIP_REL_REF(sme_me_mask) = me_mask; + physical_mask &= ~me_mask; + cc_vendor = CC_VENDOR_AMD; + cc_set_mask(me_mask); } diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c index adc497b93f03..65e9a6e391c0 100644 --- a/arch/x86/mm/numa.c +++ b/arch/x86/mm/numa.c @@ -934,7 +934,7 @@ static int __init cmp_memblk(const void *a, const void *b) const struct numa_memblk *ma = *(const struct numa_memblk **)a; const struct numa_memblk *mb = *(const struct numa_memblk **)b; - return ma->start - mb->start; + return (ma->start > mb->start) - (ma->start < mb->start); } static struct numa_memblk *numa_memblk_list[NR_NODE_MEMBLKS] __initdata; @@ -944,14 +944,12 @@ static struct numa_memblk *numa_memblk_list[NR_NODE_MEMBLKS] __initdata; * @start: address to begin fill * @end: address to end fill * - * Find and extend numa_meminfo memblks to cover the @start-@end - * physical address range, such that the first memblk includes - * @start, the last memblk includes @end, and any gaps in between - * are filled. + * Find and extend numa_meminfo memblks to cover the physical + * address range @start-@end * * RETURNS: * 0 : Success - * NUMA_NO_MEMBLK : No memblk exists in @start-@end range + * NUMA_NO_MEMBLK : No memblks exist in address range @start-@end */ int __init numa_fill_memblks(u64 start, u64 end) @@ -963,17 +961,14 @@ int __init numa_fill_memblks(u64 start, u64 end) /* * Create a list of pointers to numa_meminfo memblks that - * overlap start, end. Exclude (start == bi->end) since - * end addresses in both a CFMWS range and a memblk range - * are exclusive. - * - * This list of pointers is used to make in-place changes - * that fill out the numa_meminfo memblks. + * overlap start, end. The list is used to make in-place + * changes that fill out the numa_meminfo memblks. */ for (int i = 0; i < mi->nr_blks; i++) { struct numa_memblk *bi = &mi->blk[i]; - if (start < bi->end && end >= bi->start) { + if (memblock_addrs_overlap(start, end - start, bi->start, + bi->end - bi->start)) { blk[count] = &mi->blk[i]; count++; } diff --git a/arch/x86/mm/pat/memtype.c b/arch/x86/mm/pat/memtype.c index 0904d7e8e126..0d72183b5dd0 100644 --- a/arch/x86/mm/pat/memtype.c +++ b/arch/x86/mm/pat/memtype.c @@ -240,6 +240,8 @@ void pat_cpu_init(void) } wrmsrl(MSR_IA32_CR_PAT, pat_msr_val); + + __flush_tlb_all(); } /** @@ -296,13 +298,8 @@ void __init pat_bp_init(void) /* * Xen PV doesn't allow to set PAT MSR, but all cache modes are * supported. - * When running as TDX guest setting the PAT MSR won't work either - * due to the requirement to set CR0.CD when doing so. Rely on - * firmware to have set the PAT MSR correctly. */ - if (pat_disabled || - cpu_feature_enabled(X86_FEATURE_XENPV) || - cpu_feature_enabled(X86_FEATURE_TDX_GUEST)) { + if (pat_disabled || cpu_feature_enabled(X86_FEATURE_XENPV)) { init_cache_modes(pat_msr_val); return; } diff --git a/arch/x86/mm/pat/set_memory.c b/arch/x86/mm/pat/set_memory.c index e9b448d1b1b7..e5b2985a7c51 100644 --- a/arch/x86/mm/pat/set_memory.c +++ b/arch/x86/mm/pat/set_memory.c @@ -755,10 +755,14 @@ pmd_t *lookup_pmd_address(unsigned long address) * areas on 32-bit NUMA systems. The percpu areas can * end up in this kind of memory, for instance. * - * This could be optimized, but it is only intended to be - * used at initialization time, and keeping it - * unoptimized should increase the testing coverage for - * the more obscure platforms. + * Note that as long as the PTEs are well-formed with correct PFNs, this + * works without checking the PRESENT bit in the leaf PTE. This is unlike + * the similar vmalloc_to_page() and derivatives. Callers may depend on + * this behavior. + * + * This could be optimized, but it is only used in paths that are not perf + * sensitive, and keeping it unoptimized should increase the testing coverage + * for the more obscure platforms. */ phys_addr_t slow_virt_to_phys(void *__virt_addr) { @@ -2041,17 +2045,12 @@ int set_mce_nospec(unsigned long pfn) return rc; } -static int set_memory_p(unsigned long *addr, int numpages) -{ - return change_page_attr_set(addr, numpages, __pgprot(_PAGE_PRESENT), 0); -} - /* Restore full speculative operation to the pfn. */ int clear_mce_nospec(unsigned long pfn) { unsigned long addr = (unsigned long) pfn_to_kaddr(pfn); - return set_memory_p(&addr, 1); + return set_memory_p(addr, 1); } EXPORT_SYMBOL_GPL(clear_mce_nospec); #endif /* CONFIG_X86_64 */ @@ -2104,6 +2103,11 @@ int set_memory_np_noalias(unsigned long addr, int numpages) CPA_NO_CHECK_ALIAS, NULL); } +int set_memory_p(unsigned long addr, int numpages) +{ + return change_page_attr_set(&addr, numpages, __pgprot(_PAGE_PRESENT), 0); +} + int set_memory_4k(unsigned long addr, int numpages) { return change_page_attr_set_clr(&addr, numpages, __pgprot(0), @@ -2153,7 +2157,7 @@ static int __set_memory_enc_pgtable(unsigned long addr, int numpages, bool enc) /* Notify hypervisor that we are about to set/clr encryption attribute. */ if (!x86_platform.guest.enc_status_change_prepare(addr, numpages, enc)) - return -EIO; + goto vmm_fail; ret = __change_page_attr_set_clr(&cpa, 1); @@ -2166,13 +2170,20 @@ static int __set_memory_enc_pgtable(unsigned long addr, int numpages, bool enc) */ cpa_flush(&cpa, 0); + if (ret) + return ret; + /* Notify hypervisor that we have successfully set/clr encryption attribute. */ - if (!ret) { - if (!x86_platform.guest.enc_status_change_finish(addr, numpages, enc)) - ret = -EIO; - } + if (!x86_platform.guest.enc_status_change_finish(addr, numpages, enc)) + goto vmm_fail; - return ret; + return 0; + +vmm_fail: + WARN_ONCE(1, "CPA VMM failure to convert memory (addr=%p, numpages=%d) to %s.\n", + (void *)addr, numpages, enc ? "private" : "shared"); + + return -EIO; } static int __set_memory_enc_dec(unsigned long addr, int numpages, bool enc) diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c index 0cbc1b8e8e3d..cceb779d882d 100644 --- a/arch/x86/mm/pgtable.c +++ b/arch/x86/mm/pgtable.c @@ -293,7 +293,7 @@ static void pgd_mop_up_pmds(struct mm_struct *mm, pgd_t *pgdp) for (i = 0; i < PREALLOCATED_PMDS; i++) mop_up_one_pmd(mm, &pgdp[i]); -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION if (!boot_cpu_has(X86_FEATURE_PTI)) return; @@ -325,7 +325,7 @@ static void pgd_prepopulate_pmd(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmds[]) } } -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION static void pgd_prepopulate_user_pmd(struct mm_struct *mm, pgd_t *k_pgd, pmd_t *pmds[]) { diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c index 5768d386efab..4af930947380 100644 --- a/arch/x86/mm/tlb.c +++ b/arch/x86/mm/tlb.c @@ -89,10 +89,10 @@ #define CR3_HW_ASID_BITS 12 /* - * When enabled, PAGE_TABLE_ISOLATION consumes a single bit for + * When enabled, MITIGATION_PAGE_TABLE_ISOLATION consumes a single bit for * user/kernel switches */ -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION # define PTI_CONSUMED_PCID_BITS 1 #else # define PTI_CONSUMED_PCID_BITS 0 @@ -114,7 +114,7 @@ static inline u16 kern_pcid(u16 asid) { VM_WARN_ON_ONCE(asid > MAX_ASID_AVAILABLE); -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION /* * Make sure that the dynamic ASID space does not conflict with the * bit we are using to switch between user and kernel ASIDs. @@ -149,7 +149,7 @@ static inline u16 kern_pcid(u16 asid) static inline u16 user_pcid(u16 asid) { u16 ret = kern_pcid(asid); -#ifdef CONFIG_PAGE_TABLE_ISOLATION +#ifdef CONFIG_MITIGATION_PAGE_TABLE_ISOLATION ret |= 1 << X86_CR3_PTI_PCID_USER_BIT; #endif return ret; @@ -262,7 +262,7 @@ static void choose_new_asid(struct mm_struct *next, u64 next_tlb_gen, static inline void invalidate_user_asid(u16 asid) { /* There is no user ASID if address space separation is off */ - if (!IS_ENABLED(CONFIG_PAGE_TABLE_ISOLATION)) + if (!IS_ENABLED(CONFIG_MITIGATION_PAGE_TABLE_ISOLATION)) return; /* diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c index 919f647c740f..f3b4716317c1 100644 --- a/arch/x86/net/bpf_jit_comp.c +++ b/arch/x86/net/bpf_jit_comp.c @@ -553,7 +553,7 @@ static void emit_indirect_jump(u8 **pprog, int reg, u8 *ip) emit_jump(&prog, &__x86_indirect_thunk_array[reg], ip); } else { EMIT2(0xFF, 0xE0 + reg); /* jmp *%\reg */ - if (IS_ENABLED(CONFIG_RETPOLINE) || IS_ENABLED(CONFIG_SLS)) + if (IS_ENABLED(CONFIG_MITIGATION_RETPOLINE) || IS_ENABLED(CONFIG_MITIGATION_SLS)) EMIT1(0xCC); /* int3 */ } @@ -568,7 +568,7 @@ static void emit_return(u8 **pprog, u8 *ip) emit_jump(&prog, x86_return_thunk, ip); } else { EMIT1(0xC3); /* ret */ - if (IS_ENABLED(CONFIG_SLS)) + if (IS_ENABLED(CONFIG_MITIGATION_SLS)) EMIT1(0xCC); /* int3 */ } diff --git a/arch/x86/net/bpf_jit_comp32.c b/arch/x86/net/bpf_jit_comp32.c index b18ce19981ec..c10083a8e68e 100644 --- a/arch/x86/net/bpf_jit_comp32.c +++ b/arch/x86/net/bpf_jit_comp32.c @@ -1273,7 +1273,7 @@ static int emit_jmp_edx(u8 **pprog, u8 *ip) u8 *prog = *pprog; int cnt = 0; -#ifdef CONFIG_RETPOLINE +#ifdef CONFIG_MITIGATION_RETPOLINE EMIT1_off32(0xE9, (u8 *)__x86_indirect_thunk_edx - (ip + 5)); #else EMIT2(0xFF, 0xE2); diff --git a/arch/x86/platform/ce4100/ce4100.c b/arch/x86/platform/ce4100/ce4100.c index 40745664d92f..f32451bdcfdd 100644 --- a/arch/x86/platform/ce4100/ce4100.c +++ b/arch/x86/platform/ce4100/ce4100.c @@ -135,13 +135,13 @@ static void sdv_pci_init(void) */ void __init x86_ce4100_early_setup(void) { - x86_init.oem.arch_setup = sdv_arch_setup; - x86_init.resources.probe_roms = x86_init_noop; - x86_init.mpparse.get_smp_config = x86_init_uint_noop; - x86_init.mpparse.find_smp_config = x86_init_noop; - x86_init.mpparse.setup_ioapic_ids = setup_ioapic_ids_from_mpc_nocheck; - x86_init.pci.init = ce4100_pci_init; - x86_init.pci.init_irq = sdv_pci_init; + x86_init.oem.arch_setup = sdv_arch_setup; + x86_init.resources.probe_roms = x86_init_noop; + x86_init.mpparse.find_mptable = x86_init_noop; + x86_init.mpparse.early_parse_smp_cfg = x86_init_noop; + x86_init.mpparse.parse_smp_cfg = x86_dtb_parse_smp_config; + x86_init.pci.init = ce4100_pci_init; + x86_init.pci.init_irq = sdv_pci_init; /* * By default, the reboot method is ACPI which is supported by the diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index e9f99c56f3ce..f090ec972d7b 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -950,3 +950,8 @@ umode_t efi_attr_is_visible(struct kobject *kobj, struct attribute *attr, int n) } return attr->mode; } + +enum efi_secureboot_mode __x86_ima_efi_boot_mode(void) +{ + return boot_params.secure_boot; +} diff --git a/arch/x86/platform/intel-mid/intel-mid.c b/arch/x86/platform/intel-mid/intel-mid.c index f4592dc7a1c1..7be71c2cdc83 100644 --- a/arch/x86/platform/intel-mid/intel-mid.c +++ b/arch/x86/platform/intel-mid/intel-mid.c @@ -118,7 +118,8 @@ void __init x86_intel_mid_early_setup(void) machine_ops.emergency_restart = intel_mid_reboot; /* Avoid searching for BIOS MP tables */ - x86_init.mpparse.find_smp_config = x86_init_noop; - x86_init.mpparse.get_smp_config = x86_init_uint_noop; + x86_init.mpparse.find_mptable = x86_init_noop; + x86_init.mpparse.early_parse_smp_cfg = x86_init_noop; + x86_init.mpparse.parse_smp_cfg = x86_init_noop; set_bit(MP_BUS_ISA, mp_bus_not_pci); } diff --git a/arch/x86/platform/pvh/enlighten.c b/arch/x86/platform/pvh/enlighten.c index 00a92cb2c814..944e0290f2c0 100644 --- a/arch/x86/platform/pvh/enlighten.c +++ b/arch/x86/platform/pvh/enlighten.c @@ -3,6 +3,7 @@ #include <xen/hvc-console.h> +#include <asm/bootparam.h> #include <asm/io_apic.h> #include <asm/hypervisor.h> #include <asm/e820/api.h> diff --git a/arch/x86/purgatory/Makefile b/arch/x86/purgatory/Makefile index 08aa0f25f12a..bc31863c5ee6 100644 --- a/arch/x86/purgatory/Makefile +++ b/arch/x86/purgatory/Makefile @@ -61,7 +61,7 @@ ifdef CONFIG_STACKPROTECTOR_STRONG PURGATORY_CFLAGS_REMOVE += -fstack-protector-strong endif -ifdef CONFIG_RETPOLINE +ifdef CONFIG_MITIGATION_RETPOLINE PURGATORY_CFLAGS_REMOVE += $(RETPOLINE_CFLAGS) endif diff --git a/arch/x86/realmode/rm/trampoline_64.S b/arch/x86/realmode/rm/trampoline_64.S index c9f76fae902e..14d9c7daf90f 100644 --- a/arch/x86/realmode/rm/trampoline_64.S +++ b/arch/x86/realmode/rm/trampoline_64.S @@ -37,13 +37,15 @@ .text .code16 -.macro LOCK_AND_LOAD_REALMODE_ESP lock_pa=0 +.macro LOCK_AND_LOAD_REALMODE_ESP lock_pa=0 lock_rip=0 /* * Make sure only one CPU fiddles with the realmode stack */ .Llock_rm\@: .if \lock_pa lock btsl $0, pa_tr_lock + .elseif \lock_rip + lock btsl $0, tr_lock(%rip) .else lock btsl $0, tr_lock .endif @@ -220,6 +222,35 @@ SYM_CODE_START(trampoline_start64) lidt tr_idt(%rip) lgdt tr_gdt64(%rip) + /* Check if paging mode has to be changed */ + movq %cr4, %rax + xorl tr_cr4(%rip), %eax + testl $X86_CR4_LA57, %eax + jnz .L_switch_paging + + /* Paging mode is correct proceed in 64-bit mode */ + + LOCK_AND_LOAD_REALMODE_ESP lock_rip=1 + + movw $__KERNEL_DS, %dx + movl %edx, %ss + addl $pa_real_mode_base, %esp + movl %edx, %ds + movl %edx, %es + movl %edx, %fs + movl %edx, %gs + + movl $pa_trampoline_pgd, %eax + movq %rax, %cr3 + + pushq $__KERNEL_CS + pushq tr_start(%rip) + lretq +.L_switch_paging: + /* + * To switch between 4- and 5-level paging modes, it is necessary + * to disable paging. This must be done in the compatibility mode. + */ ljmpl *tr_compat(%rip) SYM_CODE_END(trampoline_start64) diff --git a/arch/x86/virt/svm/Makefile b/arch/x86/virt/svm/Makefile new file mode 100644 index 000000000000..ef2a31bdcc70 --- /dev/null +++ b/arch/x86/virt/svm/Makefile @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0 + +obj-$(CONFIG_KVM_AMD_SEV) += sev.o diff --git a/arch/x86/virt/svm/sev.c b/arch/x86/virt/svm/sev.c new file mode 100644 index 000000000000..cffe1157a90a --- /dev/null +++ b/arch/x86/virt/svm/sev.c @@ -0,0 +1,560 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * AMD SVM-SEV Host Support. + * + * Copyright (C) 2023 Advanced Micro Devices, Inc. + * + * Author: Ashish Kalra <ashish.kalra@amd.com> + * + */ + +#include <linux/cc_platform.h> +#include <linux/printk.h> +#include <linux/mm_types.h> +#include <linux/set_memory.h> +#include <linux/memblock.h> +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/cpumask.h> +#include <linux/iommu.h> +#include <linux/amd-iommu.h> + +#include <asm/sev.h> +#include <asm/processor.h> +#include <asm/setup.h> +#include <asm/svm.h> +#include <asm/smp.h> +#include <asm/cpu.h> +#include <asm/apic.h> +#include <asm/cpuid.h> +#include <asm/cmdline.h> +#include <asm/iommu.h> + +/* + * The RMP entry format is not architectural. The format is defined in PPR + * Family 19h Model 01h, Rev B1 processor. + */ +struct rmpentry { + union { + struct { + u64 assigned : 1, + pagesize : 1, + immutable : 1, + rsvd1 : 9, + gpa : 39, + asid : 10, + vmsa : 1, + validated : 1, + rsvd2 : 1; + }; + u64 lo; + }; + u64 hi; +} __packed; + +/* + * The first 16KB from the RMP_BASE is used by the processor for the + * bookkeeping, the range needs to be added during the RMP entry lookup. + */ +#define RMPTABLE_CPU_BOOKKEEPING_SZ 0x4000 + +/* Mask to apply to a PFN to get the first PFN of a 2MB page */ +#define PFN_PMD_MASK GENMASK_ULL(63, PMD_SHIFT - PAGE_SHIFT) + +static u64 probed_rmp_base, probed_rmp_size; +static struct rmpentry *rmptable __ro_after_init; +static u64 rmptable_max_pfn __ro_after_init; + +static LIST_HEAD(snp_leaked_pages_list); +static DEFINE_SPINLOCK(snp_leaked_pages_list_lock); + +static unsigned long snp_nr_leaked_pages; + +#undef pr_fmt +#define pr_fmt(fmt) "SEV-SNP: " fmt + +static int __mfd_enable(unsigned int cpu) +{ + u64 val; + + if (!cpu_feature_enabled(X86_FEATURE_SEV_SNP)) + return 0; + + rdmsrl(MSR_AMD64_SYSCFG, val); + + val |= MSR_AMD64_SYSCFG_MFDM; + + wrmsrl(MSR_AMD64_SYSCFG, val); + + return 0; +} + +static __init void mfd_enable(void *arg) +{ + __mfd_enable(smp_processor_id()); +} + +static int __snp_enable(unsigned int cpu) +{ + u64 val; + + if (!cpu_feature_enabled(X86_FEATURE_SEV_SNP)) + return 0; + + rdmsrl(MSR_AMD64_SYSCFG, val); + + val |= MSR_AMD64_SYSCFG_SNP_EN; + val |= MSR_AMD64_SYSCFG_SNP_VMPL_EN; + + wrmsrl(MSR_AMD64_SYSCFG, val); + + return 0; +} + +static __init void snp_enable(void *arg) +{ + __snp_enable(smp_processor_id()); +} + +#define RMP_ADDR_MASK GENMASK_ULL(51, 13) + +bool snp_probe_rmptable_info(void) +{ + u64 max_rmp_pfn, calc_rmp_sz, rmp_sz, rmp_base, rmp_end; + + rdmsrl(MSR_AMD64_RMP_BASE, rmp_base); + rdmsrl(MSR_AMD64_RMP_END, rmp_end); + + if (!(rmp_base & RMP_ADDR_MASK) || !(rmp_end & RMP_ADDR_MASK)) { + pr_err("Memory for the RMP table has not been reserved by BIOS\n"); + return false; + } + + if (rmp_base > rmp_end) { + pr_err("RMP configuration not valid: base=%#llx, end=%#llx\n", rmp_base, rmp_end); + return false; + } + + rmp_sz = rmp_end - rmp_base + 1; + + /* + * Calculate the amount the memory that must be reserved by the BIOS to + * address the whole RAM, including the bookkeeping area. The RMP itself + * must also be covered. + */ + max_rmp_pfn = max_pfn; + if (PHYS_PFN(rmp_end) > max_pfn) + max_rmp_pfn = PHYS_PFN(rmp_end); + + calc_rmp_sz = (max_rmp_pfn << 4) + RMPTABLE_CPU_BOOKKEEPING_SZ; + + if (calc_rmp_sz > rmp_sz) { + pr_err("Memory reserved for the RMP table does not cover full system RAM (expected 0x%llx got 0x%llx)\n", + calc_rmp_sz, rmp_sz); + return false; + } + + probed_rmp_base = rmp_base; + probed_rmp_size = rmp_sz; + + pr_info("RMP table physical range [0x%016llx - 0x%016llx]\n", + probed_rmp_base, probed_rmp_base + probed_rmp_size - 1); + + return true; +} + +/* + * Do the necessary preparations which are verified by the firmware as + * described in the SNP_INIT_EX firmware command description in the SNP + * firmware ABI spec. + */ +static int __init snp_rmptable_init(void) +{ + void *rmptable_start; + u64 rmptable_size; + u64 val; + + if (!cpu_feature_enabled(X86_FEATURE_SEV_SNP)) + return 0; + + if (!amd_iommu_snp_en) + return 0; + + if (!probed_rmp_size) + goto nosnp; + + rmptable_start = memremap(probed_rmp_base, probed_rmp_size, MEMREMAP_WB); + if (!rmptable_start) { + pr_err("Failed to map RMP table\n"); + return 1; + } + + /* + * Check if SEV-SNP is already enabled, this can happen in case of + * kexec boot. + */ + rdmsrl(MSR_AMD64_SYSCFG, val); + if (val & MSR_AMD64_SYSCFG_SNP_EN) + goto skip_enable; + + memset(rmptable_start, 0, probed_rmp_size); + + /* Flush the caches to ensure that data is written before SNP is enabled. */ + wbinvd_on_all_cpus(); + + /* MtrrFixDramModEn must be enabled on all the CPUs prior to enabling SNP. */ + on_each_cpu(mfd_enable, NULL, 1); + + on_each_cpu(snp_enable, NULL, 1); + +skip_enable: + rmptable_start += RMPTABLE_CPU_BOOKKEEPING_SZ; + rmptable_size = probed_rmp_size - RMPTABLE_CPU_BOOKKEEPING_SZ; + + rmptable = (struct rmpentry *)rmptable_start; + rmptable_max_pfn = rmptable_size / sizeof(struct rmpentry) - 1; + + cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "x86/rmptable_init:online", __snp_enable, NULL); + + /* + * Setting crash_kexec_post_notifiers to 'true' to ensure that SNP panic + * notifier is invoked to do SNP IOMMU shutdown before kdump. + */ + crash_kexec_post_notifiers = true; + + return 0; + +nosnp: + setup_clear_cpu_cap(X86_FEATURE_SEV_SNP); + return -ENOSYS; +} + +/* + * This must be called after the IOMMU has been initialized. + */ +device_initcall(snp_rmptable_init); + +static struct rmpentry *get_rmpentry(u64 pfn) +{ + if (WARN_ON_ONCE(pfn > rmptable_max_pfn)) + return ERR_PTR(-EFAULT); + + return &rmptable[pfn]; +} + +static struct rmpentry *__snp_lookup_rmpentry(u64 pfn, int *level) +{ + struct rmpentry *large_entry, *entry; + + if (!cpu_feature_enabled(X86_FEATURE_SEV_SNP)) + return ERR_PTR(-ENODEV); + + entry = get_rmpentry(pfn); + if (IS_ERR(entry)) + return entry; + + /* + * Find the authoritative RMP entry for a PFN. This can be either a 4K + * RMP entry or a special large RMP entry that is authoritative for a + * whole 2M area. + */ + large_entry = get_rmpentry(pfn & PFN_PMD_MASK); + if (IS_ERR(large_entry)) + return large_entry; + + *level = RMP_TO_PG_LEVEL(large_entry->pagesize); + + return entry; +} + +int snp_lookup_rmpentry(u64 pfn, bool *assigned, int *level) +{ + struct rmpentry *e; + + e = __snp_lookup_rmpentry(pfn, level); + if (IS_ERR(e)) + return PTR_ERR(e); + + *assigned = !!e->assigned; + return 0; +} +EXPORT_SYMBOL_GPL(snp_lookup_rmpentry); + +/* + * Dump the raw RMP entry for a particular PFN. These bits are documented in the + * PPR for a particular CPU model and provide useful information about how a + * particular PFN is being utilized by the kernel/firmware at the time certain + * unexpected events occur, such as RMP faults. + */ +static void dump_rmpentry(u64 pfn) +{ + u64 pfn_i, pfn_end; + struct rmpentry *e; + int level; + + e = __snp_lookup_rmpentry(pfn, &level); + if (IS_ERR(e)) { + pr_err("Failed to read RMP entry for PFN 0x%llx, error %ld\n", + pfn, PTR_ERR(e)); + return; + } + + if (e->assigned) { + pr_info("PFN 0x%llx, RMP entry: [0x%016llx - 0x%016llx]\n", + pfn, e->lo, e->hi); + return; + } + + /* + * If the RMP entry for a particular PFN is not in an assigned state, + * then it is sometimes useful to get an idea of whether or not any RMP + * entries for other PFNs within the same 2MB region are assigned, since + * those too can affect the ability to access a particular PFN in + * certain situations, such as when the PFN is being accessed via a 2MB + * mapping in the host page table. + */ + pfn_i = ALIGN_DOWN(pfn, PTRS_PER_PMD); + pfn_end = pfn_i + PTRS_PER_PMD; + + pr_info("PFN 0x%llx unassigned, dumping non-zero entries in 2M PFN region: [0x%llx - 0x%llx]\n", + pfn, pfn_i, pfn_end); + + while (pfn_i < pfn_end) { + e = __snp_lookup_rmpentry(pfn_i, &level); + if (IS_ERR(e)) { + pr_err("Error %ld reading RMP entry for PFN 0x%llx\n", + PTR_ERR(e), pfn_i); + pfn_i++; + continue; + } + + if (e->lo || e->hi) + pr_info("PFN: 0x%llx, [0x%016llx - 0x%016llx]\n", pfn_i, e->lo, e->hi); + pfn_i++; + } +} + +void snp_dump_hva_rmpentry(unsigned long hva) +{ + unsigned long paddr; + unsigned int level; + pgd_t *pgd; + pte_t *pte; + + pgd = __va(read_cr3_pa()); + pgd += pgd_index(hva); + pte = lookup_address_in_pgd(pgd, hva, &level); + + if (!pte) { + pr_err("Can't dump RMP entry for HVA %lx: no PTE/PFN found\n", hva); + return; + } + + paddr = PFN_PHYS(pte_pfn(*pte)) | (hva & ~page_level_mask(level)); + dump_rmpentry(PHYS_PFN(paddr)); +} + +/* + * PSMASH a 2MB aligned page into 4K pages in the RMP table while preserving the + * Validated bit. + */ +int psmash(u64 pfn) +{ + unsigned long paddr = pfn << PAGE_SHIFT; + int ret; + + if (!cpu_feature_enabled(X86_FEATURE_SEV_SNP)) + return -ENODEV; + + if (!pfn_valid(pfn)) + return -EINVAL; + + /* Binutils version 2.36 supports the PSMASH mnemonic. */ + asm volatile(".byte 0xF3, 0x0F, 0x01, 0xFF" + : "=a" (ret) + : "a" (paddr) + : "memory", "cc"); + + return ret; +} +EXPORT_SYMBOL_GPL(psmash); + +/* + * If the kernel uses a 2MB or larger directmap mapping to write to an address, + * and that mapping contains any 4KB pages that are set to private in the RMP + * table, an RMP #PF will trigger and cause a host crash. Hypervisor code that + * owns the PFNs being transitioned will never attempt such a write, but other + * kernel tasks writing to other PFNs in the range may trigger these checks + * inadvertently due a large directmap mapping that happens to overlap such a + * PFN. + * + * Prevent this by splitting any 2MB+ mappings that might end up containing a + * mix of private/shared PFNs as a result of a subsequent RMPUPDATE for the + * PFN/rmp_level passed in. + * + * Note that there is no attempt here to scan all the RMP entries for the 2MB + * physical range, since it would only be worthwhile in determining if a + * subsequent RMPUPDATE for a 4KB PFN would result in all the entries being of + * the same shared/private state, thus avoiding the need to split the mapping. + * But that would mean the entries are currently in a mixed state, and so the + * mapping would have already been split as a result of prior transitions. + * And since the 4K split is only done if the mapping is 2MB+, and there isn't + * currently a mechanism in place to restore 2MB+ mappings, such a check would + * not provide any usable benefit. + * + * More specifics on how these checks are carried out can be found in APM + * Volume 2, "RMP and VMPL Access Checks". + */ +static int adjust_direct_map(u64 pfn, int rmp_level) +{ + unsigned long vaddr; + unsigned int level; + int npages, ret; + pte_t *pte; + + /* + * pfn_to_kaddr() will return a vaddr only within the direct + * map range. + */ + vaddr = (unsigned long)pfn_to_kaddr(pfn); + + /* Only 4KB/2MB RMP entries are supported by current hardware. */ + if (WARN_ON_ONCE(rmp_level > PG_LEVEL_2M)) + return -EINVAL; + + if (!pfn_valid(pfn)) + return -EINVAL; + + if (rmp_level == PG_LEVEL_2M && + (!IS_ALIGNED(pfn, PTRS_PER_PMD) || !pfn_valid(pfn + PTRS_PER_PMD - 1))) + return -EINVAL; + + /* + * If an entire 2MB physical range is being transitioned, then there is + * no risk of RMP #PFs due to write accesses from overlapping mappings, + * since even accesses from 1GB mappings will be treated as 2MB accesses + * as far as RMP table checks are concerned. + */ + if (rmp_level == PG_LEVEL_2M) + return 0; + + pte = lookup_address(vaddr, &level); + if (!pte || pte_none(*pte)) + return 0; + + if (level == PG_LEVEL_4K) + return 0; + + npages = page_level_size(rmp_level) / PAGE_SIZE; + ret = set_memory_4k(vaddr, npages); + if (ret) + pr_warn("Failed to split direct map for PFN 0x%llx, ret: %d\n", + pfn, ret); + + return ret; +} + +/* + * It is expected that those operations are seldom enough so that no mutual + * exclusion of updaters is needed and thus the overlap error condition below + * should happen very rarely and would get resolved relatively quickly by + * the firmware. + * + * If not, one could consider introducing a mutex or so here to sync concurrent + * RMP updates and thus diminish the amount of cases where firmware needs to + * lock 2M ranges to protect against concurrent updates. + * + * The optimal solution would be range locking to avoid locking disjoint + * regions unnecessarily but there's no support for that yet. + */ +static int rmpupdate(u64 pfn, struct rmp_state *state) +{ + unsigned long paddr = pfn << PAGE_SHIFT; + int ret, level; + + if (!cpu_feature_enabled(X86_FEATURE_SEV_SNP)) + return -ENODEV; + + level = RMP_TO_PG_LEVEL(state->pagesize); + + if (adjust_direct_map(pfn, level)) + return -EFAULT; + + do { + /* Binutils version 2.36 supports the RMPUPDATE mnemonic. */ + asm volatile(".byte 0xF2, 0x0F, 0x01, 0xFE" + : "=a" (ret) + : "a" (paddr), "c" ((unsigned long)state) + : "memory", "cc"); + } while (ret == RMPUPDATE_FAIL_OVERLAP); + + if (ret) { + pr_err("RMPUPDATE failed for PFN %llx, pg_level: %d, ret: %d\n", + pfn, level, ret); + dump_rmpentry(pfn); + dump_stack(); + return -EFAULT; + } + + return 0; +} + +/* Transition a page to guest-owned/private state in the RMP table. */ +int rmp_make_private(u64 pfn, u64 gpa, enum pg_level level, u32 asid, bool immutable) +{ + struct rmp_state state; + + memset(&state, 0, sizeof(state)); + state.assigned = 1; + state.asid = asid; + state.immutable = immutable; + state.gpa = gpa; + state.pagesize = PG_LEVEL_TO_RMP(level); + + return rmpupdate(pfn, &state); +} +EXPORT_SYMBOL_GPL(rmp_make_private); + +/* Transition a page to hypervisor-owned/shared state in the RMP table. */ +int rmp_make_shared(u64 pfn, enum pg_level level) +{ + struct rmp_state state; + + memset(&state, 0, sizeof(state)); + state.pagesize = PG_LEVEL_TO_RMP(level); + + return rmpupdate(pfn, &state); +} +EXPORT_SYMBOL_GPL(rmp_make_shared); + +void snp_leak_pages(u64 pfn, unsigned int npages) +{ + struct page *page = pfn_to_page(pfn); + + pr_warn("Leaking PFN range 0x%llx-0x%llx\n", pfn, pfn + npages); + + spin_lock(&snp_leaked_pages_list_lock); + while (npages--) { + + /* + * Reuse the page's buddy list for chaining into the leaked + * pages list. This page should not be on a free list currently + * and is also unsafe to be added to a free list. + */ + if (likely(!PageCompound(page)) || + + /* + * Skip inserting tail pages of compound page as + * page->buddy_list of tail pages is not usable. + */ + (PageHead(page) && compound_nr(page) <= npages)) + list_add_tail(&page->buddy_list, &snp_leaked_pages_list); + + dump_rmpentry(pfn); + snp_nr_leaked_pages++; + pfn++; + page++; + } + spin_unlock(&snp_leaked_pages_list_lock); +} +EXPORT_SYMBOL_GPL(snp_leak_pages); diff --git a/arch/x86/xen/apic.c b/arch/x86/xen/apic.c index 9dd5490b3318..8b045dd25196 100644 --- a/arch/x86/xen/apic.c +++ b/arch/x86/xen/apic.c @@ -33,12 +33,6 @@ static unsigned int xen_io_apic_read(unsigned apic, unsigned reg) return 0xfd; } -static u32 xen_set_apic_id(u32 x) -{ - WARN_ON(1); - return x; -} - static u32 xen_get_apic_id(u32 x) { return ((x)>>24) & 0xFFu; @@ -49,20 +43,20 @@ static u32 xen_apic_read(u32 reg) struct xen_platform_op op = { .cmd = XENPF_get_cpuinfo, .interface_version = XENPF_INTERFACE_VERSION, - .u.pcpu_info.xen_cpuid = 0, }; - int ret; - - /* Shouldn't need this as APIC is turned off for PV, and we only - * get called on the bootup processor. But just in case. */ - if (!xen_initial_domain() || smp_processor_id()) - return 0; + int ret, cpu; if (reg == APIC_LVR) return 0x14; if (reg != APIC_ID) return 0; + cpu = smp_processor_id(); + if (!xen_initial_domain()) + return cpu ? cpuid_to_apicid[cpu] << 24 : 0; + + op.u.pcpu_info.xen_cpuid = cpu; + ret = HYPERVISOR_platform_op(&op); if (ret) op.u.pcpu_info.apic_id = BAD_APICID; @@ -110,11 +104,6 @@ static int xen_madt_oem_check(char *oem_id, char *oem_table_id) return xen_pv_domain(); } -static u32 xen_phys_pkg_id(u32 initial_apic_id, int index_msb) -{ - return initial_apic_id >> index_msb; -} - static u32 xen_cpu_present_to_apicid(int cpu) { if (cpu_present(cpu)) @@ -133,11 +122,9 @@ static struct apic xen_pv_apic __ro_after_init = { .disable_esr = 0, .cpu_present_to_apicid = xen_cpu_present_to_apicid, - .phys_pkg_id = xen_phys_pkg_id, /* detect_ht */ .max_apic_id = UINT_MAX, .get_apic_id = xen_get_apic_id, - .set_apic_id = xen_set_apic_id, .calc_dest_apicid = apic_flat_calc_apicid, diff --git a/arch/x86/xen/enlighten_hvm.c b/arch/x86/xen/enlighten_hvm.c index 3f8c34707c50..99a68fa71dbe 100644 --- a/arch/x86/xen/enlighten_hvm.c +++ b/arch/x86/xen/enlighten_hvm.c @@ -168,7 +168,7 @@ static int xen_cpu_up_prepare_hvm(unsigned int cpu) */ xen_uninit_lock_cpu(cpu); - if (cpu_acpi_id(cpu) != U32_MAX) + if (cpu_acpi_id(cpu) != CPU_ACPIID_INVALID) per_cpu(xen_vcpu_id, cpu) = cpu_acpi_id(cpu); else per_cpu(xen_vcpu_id, cpu) = cpu; diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c index aeb33e0a3f76..ace2eb054053 100644 --- a/arch/x86/xen/enlighten_pv.c +++ b/arch/x86/xen/enlighten_pv.c @@ -200,6 +200,9 @@ static void __init xen_pv_init_platform(void) xen_set_mtrr_data(); else mtrr_overwrite_state(NULL, 0, MTRR_TYPE_WRBACK); + + /* Adjust nr_cpu_ids before "enumeration" happens */ + xen_smp_count_cpus(); } static void __init xen_pv_guest_late_init(void) diff --git a/arch/x86/xen/enlighten_pvh.c b/arch/x86/xen/enlighten_pvh.c index ada3868c02c2..9e9db601bd52 100644 --- a/arch/x86/xen/enlighten_pvh.c +++ b/arch/x86/xen/enlighten_pvh.c @@ -4,6 +4,7 @@ #include <xen/hvc-console.h> +#include <asm/bootparam.h> #include <asm/io_apic.h> #include <asm/hypervisor.h> #include <asm/e820/api.h> diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c index 4b0d6fff88de..935771726f9c 100644 --- a/arch/x86/xen/smp.c +++ b/arch/x86/xen/smp.c @@ -65,6 +65,8 @@ int xen_smp_intr_init(unsigned int cpu) char *resched_name, *callfunc_name, *debug_name; resched_name = kasprintf(GFP_KERNEL, "resched%d", cpu); + if (!resched_name) + goto fail_mem; per_cpu(xen_resched_irq, cpu).name = resched_name; rc = bind_ipi_to_irqhandler(XEN_RESCHEDULE_VECTOR, cpu, @@ -77,6 +79,8 @@ int xen_smp_intr_init(unsigned int cpu) per_cpu(xen_resched_irq, cpu).irq = rc; callfunc_name = kasprintf(GFP_KERNEL, "callfunc%d", cpu); + if (!callfunc_name) + goto fail_mem; per_cpu(xen_callfunc_irq, cpu).name = callfunc_name; rc = bind_ipi_to_irqhandler(XEN_CALL_FUNCTION_VECTOR, cpu, @@ -90,6 +94,9 @@ int xen_smp_intr_init(unsigned int cpu) if (!xen_fifo_events) { debug_name = kasprintf(GFP_KERNEL, "debug%d", cpu); + if (!debug_name) + goto fail_mem; + per_cpu(xen_debug_irq, cpu).name = debug_name; rc = bind_virq_to_irqhandler(VIRQ_DEBUG, cpu, xen_debug_interrupt, @@ -101,6 +108,9 @@ int xen_smp_intr_init(unsigned int cpu) } callfunc_name = kasprintf(GFP_KERNEL, "callfuncsingle%d", cpu); + if (!callfunc_name) + goto fail_mem; + per_cpu(xen_callfuncsingle_irq, cpu).name = callfunc_name; rc = bind_ipi_to_irqhandler(XEN_CALL_FUNCTION_SINGLE_VECTOR, cpu, @@ -114,6 +124,8 @@ int xen_smp_intr_init(unsigned int cpu) return 0; + fail_mem: + rc = -ENOMEM; fail: xen_smp_intr_free(cpu); return rc; @@ -123,8 +135,6 @@ void __init xen_smp_cpus_done(unsigned int max_cpus) { if (xen_hvm_domain()) native_smp_cpus_done(max_cpus); - else - calculate_max_logical_packages(); } void xen_smp_send_reschedule(int cpu) diff --git a/arch/x86/xen/smp.h b/arch/x86/xen/smp.h index c20cbb14c82b..b8efdbc693f7 100644 --- a/arch/x86/xen/smp.h +++ b/arch/x86/xen/smp.h @@ -19,6 +19,7 @@ extern void xen_smp_intr_free(unsigned int cpu); int xen_smp_intr_init_pv(unsigned int cpu); void xen_smp_intr_free_pv(unsigned int cpu); +void xen_smp_count_cpus(void); void xen_smp_cpus_done(unsigned int max_cpus); void xen_smp_send_reschedule(int cpu); @@ -44,6 +45,7 @@ static inline int xen_smp_intr_init_pv(unsigned int cpu) return 0; } static inline void xen_smp_intr_free_pv(unsigned int cpu) {} +static inline void xen_smp_count_cpus(void) { } #endif /* CONFIG_SMP */ #endif diff --git a/arch/x86/xen/smp_pv.c b/arch/x86/xen/smp_pv.c index a0f07bbfcd6e..27d1a5b7f571 100644 --- a/arch/x86/xen/smp_pv.c +++ b/arch/x86/xen/smp_pv.c @@ -29,6 +29,7 @@ #include <asm/idtentry.h> #include <asm/desc.h> #include <asm/cpu.h> +#include <asm/apic.h> #include <asm/io_apic.h> #include <xen/interface/xen.h> @@ -73,7 +74,6 @@ static void cpu_bringup(void) } cpu = smp_processor_id(); smp_store_cpu_info(cpu); - cpu_data(cpu).x86_max_cores = 1; set_cpu_sibling_map(cpu); speculative_store_bypass_ht_init(); @@ -149,39 +149,16 @@ int xen_smp_intr_init_pv(unsigned int cpu) return rc; } -static void __init _get_smp_config(unsigned int early) +static void __init xen_pv_smp_config(void) { - int i, rc; - unsigned int subtract = 0; - - if (early) - return; - - num_processors = 0; - disabled_cpus = 0; - for (i = 0; i < nr_cpu_ids; i++) { - rc = HYPERVISOR_vcpu_op(VCPUOP_is_up, i, NULL); - if (rc >= 0) { - num_processors++; - set_cpu_possible(i, true); - } else { - set_cpu_possible(i, false); - set_cpu_present(i, false); - subtract++; - } - } -#ifdef CONFIG_HOTPLUG_CPU - /* This is akin to using 'nr_cpus' on the Linux command line. - * Which is OK as when we use 'dom0_max_vcpus=X' we can only - * have up to X, while nr_cpu_ids is greater than X. This - * normally is not a problem, except when CPU hotplugging - * is involved and then there might be more than X CPUs - * in the guest - which will not work as there is no - * hypercall to expand the max number of VCPUs an already - * running guest has. So cap it up to X. */ - if (subtract) - set_nr_cpu_ids(nr_cpu_ids - subtract); -#endif + u32 apicid = 0; + int i; + + topology_register_boot_apic(apicid++); + + for (i = 1; i < nr_cpu_ids; i++) + topology_register_apic(apicid++, CPU_ACPIID_INVALID, true); + /* Pretend to be a proper enumerated system */ smp_found_config = 1; } @@ -224,8 +201,6 @@ static void __init xen_pv_smp_prepare_cpus(unsigned int max_cpus) smp_prepare_cpus_common(); - cpu_data(0).x86_max_cores = 1; - speculative_store_bypass_ht_init(); xen_pmu_init(0); @@ -434,6 +409,20 @@ static irqreturn_t xen_irq_work_interrupt(int irq, void *dev_id) return IRQ_HANDLED; } +void __init xen_smp_count_cpus(void) +{ + unsigned int cpus; + + for (cpus = 0; cpus < nr_cpu_ids; cpus++) { + if (HYPERVISOR_vcpu_op(VCPUOP_is_up, cpus, NULL) < 0) + break; + } + + pr_info("Xen PV: Detected %u vCPUS\n", cpus); + if (cpus < nr_cpu_ids) + set_nr_cpu_ids(cpus); +} + static const struct smp_ops xen_smp_ops __initconst = { .smp_prepare_boot_cpu = xen_pv_smp_prepare_boot_cpu, .smp_prepare_cpus = xen_pv_smp_prepare_cpus, @@ -458,6 +447,12 @@ void __init xen_smp_init(void) smp_ops = xen_smp_ops; /* Avoid searching for BIOS MP tables */ - x86_init.mpparse.find_smp_config = x86_init_noop; - x86_init.mpparse.get_smp_config = _get_smp_config; + x86_init.mpparse.find_mptable = x86_init_noop; + x86_init.mpparse.early_parse_smp_cfg = x86_init_noop; + + /* XEN/PV Dom0 has halfways sane topology information via CPUID/MADT */ + if (xen_initial_domain()) + x86_init.mpparse.parse_smp_cfg = x86_init_noop; + else + x86_init.mpparse.parse_smp_cfg = xen_pv_smp_config; } diff --git a/arch/x86/xen/vga.c b/arch/x86/xen/vga.c index d97adab8420f..f7547807b0bd 100644 --- a/arch/x86/xen/vga.c +++ b/arch/x86/xen/vga.c @@ -2,7 +2,6 @@ #include <linux/screen_info.h> #include <linux/init.h> -#include <asm/bootparam.h> #include <asm/setup.h> #include <xen/interface/xen.h> diff --git a/arch/x86/xen/xen-asm.S b/arch/x86/xen/xen-asm.S index 1a9cd18dfbd3..83189cf5cdce 100644 --- a/arch/x86/xen/xen-asm.S +++ b/arch/x86/xen/xen-asm.S @@ -28,7 +28,7 @@ * non-zero. */ SYM_FUNC_START(xen_irq_disable_direct) - movb $1, PER_CPU_VAR(xen_vcpu_info) + XEN_vcpu_info_mask + movb $1, PER_CPU_VAR(xen_vcpu_info + XEN_vcpu_info_mask) RET SYM_FUNC_END(xen_irq_disable_direct) @@ -69,7 +69,7 @@ SYM_FUNC_END(check_events) SYM_FUNC_START(xen_irq_enable_direct) FRAME_BEGIN /* Unmask events */ - movb $0, PER_CPU_VAR(xen_vcpu_info) + XEN_vcpu_info_mask + movb $0, PER_CPU_VAR(xen_vcpu_info + XEN_vcpu_info_mask) /* * Preempt here doesn't matter because that will deal with any @@ -78,7 +78,7 @@ SYM_FUNC_START(xen_irq_enable_direct) */ /* Test for pending */ - testb $0xff, PER_CPU_VAR(xen_vcpu_info) + XEN_vcpu_info_pending + testb $0xff, PER_CPU_VAR(xen_vcpu_info + XEN_vcpu_info_pending) jz 1f call check_events @@ -97,7 +97,7 @@ SYM_FUNC_END(xen_irq_enable_direct) * x86 use opposite senses (mask vs enable). */ SYM_FUNC_START(xen_save_fl_direct) - testb $0xff, PER_CPU_VAR(xen_vcpu_info) + XEN_vcpu_info_mask + testb $0xff, PER_CPU_VAR(xen_vcpu_info + XEN_vcpu_info_mask) setz %ah addb %ah, %ah RET @@ -113,7 +113,7 @@ SYM_FUNC_END(xen_read_cr2); SYM_FUNC_START(xen_read_cr2_direct) FRAME_BEGIN - _ASM_MOV PER_CPU_VAR(xen_vcpu_info) + XEN_vcpu_info_arch_cr2, %_ASM_AX + _ASM_MOV PER_CPU_VAR(xen_vcpu_info + XEN_vcpu_info_arch_cr2), %_ASM_AX FRAME_END RET SYM_FUNC_END(xen_read_cr2_direct); diff --git a/arch/x86/xen/xen-head.S b/arch/x86/xen/xen-head.S index a0ea285878db..04101b984f24 100644 --- a/arch/x86/xen/xen-head.S +++ b/arch/x86/xen/xen-head.S @@ -49,7 +49,7 @@ SYM_CODE_START(startup_xen) ANNOTATE_NOENDBR cld - leaq (__end_init_task - PTREGS_SIZE)(%rip), %rsp + leaq (__end_init_task - TOP_OF_KERNEL_STACK_PADDING - PTREGS_SIZE)(%rip), %rsp /* Set up %gs. * diff --git a/arch/xtensa/include/asm/jump_label.h b/arch/xtensa/include/asm/jump_label.h index c812bf85021c..46c8596259d2 100644 --- a/arch/xtensa/include/asm/jump_label.h +++ b/arch/xtensa/include/asm/jump_label.h @@ -13,7 +13,7 @@ static __always_inline bool arch_static_branch(struct static_key *key, bool branch) { - asm_volatile_goto("1:\n\t" + asm goto("1:\n\t" "_nop\n\t" ".pushsection __jump_table, \"aw\"\n\t" ".word 1b, %l[l_yes], %c0\n\t" @@ -38,7 +38,7 @@ static __always_inline bool arch_static_branch_jump(struct static_key *key, * make it reachable and wrap both into a no-transform block * to avoid any assembler interference with this. */ - asm_volatile_goto("1:\n\t" + asm goto("1:\n\t" ".begin no-transform\n\t" "_j %l[l_yes]\n\t" "2:\n\t" diff --git a/arch/xtensa/platforms/iss/simdisk.c b/arch/xtensa/platforms/iss/simdisk.c index 178cf96ca10a..defc67909a9c 100644 --- a/arch/xtensa/platforms/iss/simdisk.c +++ b/arch/xtensa/platforms/iss/simdisk.c @@ -264,16 +264,18 @@ static int __init simdisk_setup(struct simdisk *dev, int which, struct proc_dir_entry *procdir) { char tmp[2] = { '0' + which, 0 }; - int err = -ENOMEM; + int err; dev->fd = -1; dev->filename = NULL; spin_lock_init(&dev->lock); dev->users = 0; - dev->gd = blk_alloc_disk(NUMA_NO_NODE); - if (!dev->gd) + dev->gd = blk_alloc_disk(NULL, NUMA_NO_NODE); + if (IS_ERR(dev->gd)) { + err = PTR_ERR(dev->gd); goto out; + } dev->gd->major = simdisk_major; dev->gd->first_minor = which; dev->gd->minors = SIMDISK_MINORS; |