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authorMichael Ellerman <mpe@ellerman.id.au>2021-05-08 14:12:55 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2021-05-08 14:12:55 +0300
commitf96271cefe6dfd1cb04195b76f4a33e185cd7f92 (patch)
treef290b3e7aa9c12fdc4853ce97c150c4f9abd90a3 /arch
parent32b48bf8514c28cdc89cd8069eceeb6e6cff0612 (diff)
parentdd860052c99b1e088352bdd4fb7aef46f8d2ef47 (diff)
downloadlinux-f96271cefe6dfd1cb04195b76f4a33e185cd7f92.tar.xz
Merge branch 'master' into next
Merge master back into next, this allows us to resolve some conflicts in arch/powerpc/Kconfig, and also re-sort the symbols under config PPC so that they are in alphabetical order again.
Diffstat (limited to 'arch')
-rw-r--r--arch/alpha/include/asm/io.h5
-rw-r--r--arch/alpha/kernel/pc873xx.c4
-rw-r--r--arch/alpha/lib/csum_partial_copy.c1
-rw-r--r--arch/arc/Kconfig9
-rw-r--r--arch/arm/Kconfig10
-rw-r--r--arch/arm/boot/compressed/Makefile4
-rw-r--r--arch/arm/boot/dts/rk3036.dtsi4
-rw-r--r--arch/arm/boot/dts/rk3288.dtsi4
-rw-r--r--arch/arm/configs/dove_defconfig1
-rw-r--r--arch/arm/configs/footbridge_defconfig1
-rw-r--r--arch/arm/configs/magician_defconfig1
-rw-r--r--arch/arm/configs/moxart_defconfig1
-rw-r--r--arch/arm/configs/mps2_defconfig1
-rw-r--r--arch/arm/configs/mvebu_v5_defconfig1
-rw-r--r--arch/arm/configs/xcep_defconfig1
-rw-r--r--arch/arm/include/asm/bug.h1
-rw-r--r--arch/arm/include/asm/io.h5
-rw-r--r--arch/arm/include/asm/kexec.h3
-rw-r--r--arch/arm/include/asm/memory.h15
-rw-r--r--arch/arm/include/asm/set_memory.h8
-rw-r--r--arch/arm/include/uapi/asm/Kbuild1
-rw-r--r--arch/arm/include/uapi/asm/unistd.h1
-rw-r--r--arch/arm/kernel/asm-offsets.c3
-rw-r--r--arch/arm/kernel/entry-common.S8
-rw-r--r--arch/arm/kernel/hw_breakpoint.c2
-rw-r--r--arch/arm/kernel/machine_kexec.c8
-rw-r--r--arch/arm/kernel/process.c11
-rw-r--r--arch/arm/kernel/smccc-call.S11
-rw-r--r--arch/arm/kernel/suspend.c19
-rw-r--r--arch/arm/kernel/traps.c1
-rw-r--r--arch/arm/mach-footbridge/Kconfig21
-rw-r--r--arch/arm/mach-footbridge/Makefile2
-rw-r--r--arch/arm/mach-footbridge/personal-pci.c57
-rw-r--r--arch/arm/mach-footbridge/personal.c25
-rw-r--r--arch/arm/mach-iop32x/n2100.c8
-rw-r--r--arch/arm/mm/cache-v7.S58
-rw-r--r--arch/arm/mm/dump.c4
-rw-r--r--arch/arm/mm/init.c27
-rw-r--r--arch/arm/mm/proc-v7.S39
-rw-r--r--arch/arm/mm/ptdump_debugfs.c15
-rw-r--r--arch/arm/probes/kprobes/test-arm.c294
-rw-r--r--arch/arm/probes/kprobes/test-core.h1
-rw-r--r--arch/arm/tools/Makefile26
-rw-r--r--arch/arm/tools/syscallhdr.sh31
-rw-r--r--arch/arm/tools/syscalltbl.sh22
-rw-r--r--arch/arm/xen/mm.c2
-rw-r--r--arch/arm64/Kconfig41
-rw-r--r--arch/arm64/boot/dts/rockchip/rk3368.dtsi4
-rw-r--r--arch/arm64/boot/dts/rockchip/rk3399.dtsi4
-rw-r--r--arch/arm64/include/asm/daifflags.h3
-rw-r--r--arch/arm64/include/asm/kernel-pgtable.h2
-rw-r--r--arch/arm64/include/asm/memory.h4
-rw-r--r--arch/arm64/include/asm/sparsemem.h3
-rw-r--r--arch/arm64/kernel/alternative.c5
-rw-r--r--arch/arm64/kernel/cpufeature.c5
-rw-r--r--arch/arm64/kernel/cpuidle.c2
-rw-r--r--arch/arm64/kernel/entry-common.c17
-rw-r--r--arch/arm64/kernel/entry.S21
-rw-r--r--arch/arm64/kernel/process.c9
-rw-r--r--arch/arm64/kernel/stacktrace.c10
-rw-r--r--arch/arm64/kernel/vdso/vdso.lds.S8
-rw-r--r--arch/arm64/kernel/vdso32/Makefile8
-rw-r--r--arch/arm64/mm/hugetlbpage.c7
-rw-r--r--arch/arm64/mm/init.c8
-rw-r--r--arch/arm64/mm/mmu.c2
-rw-r--r--arch/arm64/mm/ptdump.c2
-rw-r--r--arch/csky/include/asm/Kbuild1
-rw-r--r--arch/csky/include/asm/asid.h2
-rw-r--r--arch/csky/include/asm/barrier.h2
-rw-r--r--arch/csky/include/asm/segment.h7
-rw-r--r--arch/csky/include/asm/uaccess.h452
-rw-r--r--arch/csky/include/asm/vdso.h2
-rw-r--r--arch/csky/kernel/entry.S1
-rw-r--r--arch/csky/lib/usercopy.c366
-rw-r--r--arch/csky/mm/fault.c2
-rw-r--r--arch/csky/mm/syscache.c1
-rw-r--r--arch/h8300/include/asm/bitops.h8
-rw-r--r--arch/hexagon/Makefile6
-rw-r--r--arch/hexagon/configs/comet_defconfig2
-rw-r--r--arch/hexagon/include/asm/futex.h4
-rw-r--r--arch/hexagon/include/asm/io.h1
-rw-r--r--arch/hexagon/include/asm/timex.h3
-rw-r--r--arch/hexagon/kernel/hexagon_ksyms.c8
-rw-r--r--arch/hexagon/kernel/ptrace.c4
-rw-r--r--arch/hexagon/lib/Makefile3
-rw-r--r--arch/hexagon/lib/divsi3.S67
-rw-r--r--arch/hexagon/lib/memcpy_likely_aligned.S56
-rw-r--r--arch/hexagon/lib/modsi3.S46
-rw-r--r--arch/hexagon/lib/udivsi3.S38
-rw-r--r--arch/hexagon/lib/umodsi3.S36
-rw-r--r--arch/ia64/Kconfig14
-rw-r--r--arch/ia64/include/asm/io.h1
-rw-r--r--arch/ia64/include/asm/uaccess.h18
-rw-r--r--arch/ia64/mm/hugetlbpage.c3
-rw-r--r--arch/m68k/atari/time.c7
-rw-r--r--arch/m68k/coldfire/intc-simr.c12
-rw-r--r--arch/m68k/configs/amcore_defconfig1
-rw-r--r--arch/m68k/include/asm/bitops.h6
-rw-r--r--arch/m68k/include/asm/io_mm.h5
-rw-r--r--arch/microblaze/include/asm/ftrace.h2
-rw-r--r--arch/mips/Kconfig6
-rw-r--r--arch/mips/include/asm/io.h5
-rw-r--r--arch/mips/mm/hugetlbpage.c4
-rw-r--r--arch/nds32/include/asm/uaccess.h1
-rw-r--r--arch/nds32/kernel/ftrace.c2
-rw-r--r--arch/nios2/include/asm/uaccess.h1
-rw-r--r--arch/openrisc/configs/or1ksim_defconfig1
-rw-r--r--arch/parisc/Kconfig5
-rw-r--r--arch/parisc/include/asm/Kbuild1
-rw-r--r--arch/parisc/include/asm/io.h5
-rw-r--r--arch/parisc/include/asm/pdc_chassis.h1
-rw-r--r--arch/parisc/kernel/setup.c2
-rw-r--r--arch/parisc/kernel/syscall.S16
-rw-r--r--arch/parisc/kernel/syscalls/Makefile30
-rw-r--r--arch/parisc/kernel/syscalls/syscallhdr.sh36
-rw-r--r--arch/parisc/kernel/syscalls/syscalltbl.sh36
-rw-r--r--arch/parisc/mm/hugetlbpage.c2
-rw-r--r--arch/powerpc/Kconfig19
-rw-r--r--arch/powerpc/include/asm/ftrace.h4
-rw-r--r--arch/powerpc/include/asm/io.h5
-rw-r--r--arch/powerpc/mm/hugetlbpage.c3
-rw-r--r--arch/powerpc/platforms/Kconfig.cputype16
-rw-r--r--arch/powerpc/platforms/pseries/svm.c6
-rw-r--r--arch/riscv/Kconfig96
-rw-r--r--arch/riscv/Kconfig.erratas44
-rw-r--r--arch/riscv/Kconfig.socs8
-rw-r--r--arch/riscv/Makefile9
-rw-r--r--arch/riscv/boot/Makefile13
-rw-r--r--arch/riscv/boot/dts/Makefile1
-rw-r--r--arch/riscv/boot/dts/microchip/Makefile2
-rw-r--r--arch/riscv/boot/dts/microchip/microchip-mpfs-icicle-kit.dts72
-rw-r--r--arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi329
-rw-r--r--arch/riscv/boot/dts/sifive/fu740-c000.dtsi33
-rw-r--r--arch/riscv/boot/loader.lds.S3
-rw-r--r--arch/riscv/configs/defconfig4
-rw-r--r--arch/riscv/errata/Makefile2
-rw-r--r--arch/riscv/errata/alternative.c74
-rw-r--r--arch/riscv/errata/sifive/Makefile2
-rw-r--r--arch/riscv/errata/sifive/errata.c106
-rw-r--r--arch/riscv/errata/sifive/errata_cip_453.S38
-rw-r--r--arch/riscv/include/asm/alternative-macros.h142
-rw-r--r--arch/riscv/include/asm/alternative.h39
-rw-r--r--arch/riscv/include/asm/asm.h1
-rw-r--r--arch/riscv/include/asm/csr.h3
-rw-r--r--arch/riscv/include/asm/elf.h6
-rw-r--r--arch/riscv/include/asm/errata_list.h39
-rw-r--r--arch/riscv/include/asm/ftrace.h14
-rw-r--r--arch/riscv/include/asm/kexec.h56
-rw-r--r--arch/riscv/include/asm/page.h47
-rw-r--r--arch/riscv/include/asm/pgtable.h65
-rw-r--r--arch/riscv/include/asm/sbi.h3
-rw-r--r--arch/riscv/include/asm/sections.h1
-rw-r--r--arch/riscv/include/asm/set_memory.h1
-rw-r--r--arch/riscv/include/asm/smp.h4
-rw-r--r--arch/riscv/include/asm/string.h5
-rw-r--r--arch/riscv/include/asm/syscall.h2
-rw-r--r--arch/riscv/include/asm/tlbflush.h3
-rw-r--r--arch/riscv/include/asm/uaccess.h1
-rw-r--r--arch/riscv/include/asm/vendorid_list.h10
-rw-r--r--arch/riscv/kernel/Makefile6
-rw-r--r--arch/riscv/kernel/crash_dump.c46
-rw-r--r--arch/riscv/kernel/crash_save_regs.S56
-rw-r--r--arch/riscv/kernel/entry.S6
-rw-r--r--arch/riscv/kernel/head.S49
-rw-r--r--arch/riscv/kernel/head.h3
-rw-r--r--arch/riscv/kernel/kexec_relocate.S223
-rw-r--r--arch/riscv/kernel/machine_kexec.c193
-rw-r--r--arch/riscv/kernel/mcount.S10
-rw-r--r--arch/riscv/kernel/module.c8
-rw-r--r--arch/riscv/kernel/probes/kprobes.c12
-rw-r--r--arch/riscv/kernel/sbi.c31
-rw-r--r--arch/riscv/kernel/setup.c130
-rw-r--r--arch/riscv/kernel/smp.c24
-rw-r--r--arch/riscv/kernel/smpboot.c4
-rw-r--r--arch/riscv/kernel/syscall_table.c2
-rw-r--r--arch/riscv/kernel/time.c2
-rw-r--r--arch/riscv/kernel/traps.c2
-rw-r--r--arch/riscv/kernel/vdso.c4
-rw-r--r--arch/riscv/kernel/vdso/Makefile16
-rw-r--r--arch/riscv/kernel/vmlinux-xip.lds.S133
-rw-r--r--arch/riscv/kernel/vmlinux.lds.S16
-rw-r--r--arch/riscv/mm/fault.c13
-rw-r--r--arch/riscv/mm/init.c337
-rw-r--r--arch/riscv/mm/kasan_init.c71
-rw-r--r--arch/riscv/mm/physaddr.c2
-rw-r--r--arch/riscv/mm/ptdump.c75
-rw-r--r--arch/riscv/net/bpf_jit_comp64.c13
-rw-r--r--arch/riscv/net/bpf_jit_core.c14
-rw-r--r--arch/s390/Kconfig13
-rw-r--r--arch/s390/configs/debug_defconfig3
-rw-r--r--arch/s390/configs/defconfig3
-rw-r--r--arch/s390/include/asm/cpu_mcf.h2
-rw-r--r--arch/s390/include/asm/entry-common.h10
-rw-r--r--arch/s390/include/asm/io.h5
-rw-r--r--arch/s390/include/asm/pci.h2
-rw-r--r--arch/s390/kernel/perf_cpum_cf.c12
-rw-r--r--arch/s390/kernel/perf_cpum_cf_common.c46
-rw-r--r--arch/s390/kernel/perf_cpum_cf_diag.c54
-rw-r--r--arch/s390/kernel/setup.c4
-rw-r--r--arch/s390/kernel/syscall.c1
-rw-r--r--arch/s390/kernel/traps.c2
-rw-r--r--arch/s390/mm/hugetlbpage.c2
-rw-r--r--arch/s390/pci/pci.c10
-rw-r--r--arch/s390/pci/pci_event.c28
-rw-r--r--arch/sh/Kconfig7
-rw-r--r--arch/sh/configs/edosk7705_defconfig1
-rw-r--r--arch/sh/configs/se7206_defconfig1
-rw-r--r--arch/sh/configs/sh2007_defconfig1
-rw-r--r--arch/sh/configs/sh7724_generic_defconfig1
-rw-r--r--arch/sh/configs/sh7770_generic_defconfig1
-rw-r--r--arch/sh/configs/sh7785lcr_32bit_defconfig1
-rw-r--r--arch/sh/include/asm/bitops.h5
-rw-r--r--arch/sh/include/asm/io.h5
-rw-r--r--arch/sh/kernel/ftrace.c2
-rw-r--r--arch/sh/mm/Kconfig8
-rw-r--r--arch/sh/mm/hugetlbpage.c2
-rw-r--r--arch/sparc/configs/sparc64_defconfig1
-rw-r--r--arch/sparc/include/asm/ftrace.h2
-rw-r--r--arch/sparc/include/asm/io_64.h5
-rw-r--r--arch/sparc/mm/hugetlbpage.c2
-rw-r--r--arch/um/Kconfig.debug1
-rw-r--r--arch/um/drivers/cow.h7
-rw-r--r--arch/um/drivers/hostaudio_kern.c4
-rw-r--r--arch/um/drivers/vector_kern.c1
-rw-r--r--arch/um/include/asm/pgtable.h2
-rw-r--r--arch/um/include/uapi/asm/Kbuild1
-rw-r--r--arch/um/kernel/Makefile1
-rw-r--r--arch/um/kernel/dyn.lds.S6
-rw-r--r--arch/um/kernel/gmon_syms.c16
-rw-r--r--arch/um/kernel/mem.c3
-rw-r--r--arch/um/kernel/uml.lds.S6
-rw-r--r--arch/x86/Kconfig29
-rw-r--r--arch/x86/kernel/process.c19
-rw-r--r--arch/x86/mm/pat/set_memory.c8
-rw-r--r--arch/x86/pci/amd_bus.c2
-rw-r--r--arch/x86/um/Makefile1
-rw-r--r--arch/x86/um/asm/elf.h2
-rw-r--r--arch/x86/um/shared/sysdep/stub_32.h2
-rw-r--r--arch/x86/xen/pci-swiotlb-xen.c4
-rw-r--r--arch/xtensa/configs/xip_kc705_defconfig1
240 files changed, 3722 insertions, 1751 deletions
diff --git a/arch/alpha/include/asm/io.h b/arch/alpha/include/asm/io.h
index 1f6a909d1fa5..0fab5ac90775 100644
--- a/arch/alpha/include/asm/io.h
+++ b/arch/alpha/include/asm/io.h
@@ -602,11 +602,6 @@ extern void outsl (unsigned long port, const void *src, unsigned long count);
*/
#define xlate_dev_mem_ptr(p) __va(p)
-/*
- * Convert a virtual cached pointer to an uncached pointer
- */
-#define xlate_dev_kmem_ptr(p) p
-
#endif /* __KERNEL__ */
#endif /* __ALPHA_IO_H */
diff --git a/arch/alpha/kernel/pc873xx.c b/arch/alpha/kernel/pc873xx.c
index 63aee5d86e02..82b19c9e59d6 100644
--- a/arch/alpha/kernel/pc873xx.c
+++ b/arch/alpha/kernel/pc873xx.c
@@ -13,12 +13,12 @@ static char *pc873xx_names[] = {
static unsigned int base, model;
-unsigned int __init pc873xx_get_base()
+unsigned int __init pc873xx_get_base(void)
{
return base;
}
-char *__init pc873xx_get_model()
+char *__init pc873xx_get_model(void)
{
return pc873xx_names[model];
}
diff --git a/arch/alpha/lib/csum_partial_copy.c b/arch/alpha/lib/csum_partial_copy.c
index dc68efbe9367..1931a04af85a 100644
--- a/arch/alpha/lib/csum_partial_copy.c
+++ b/arch/alpha/lib/csum_partial_copy.c
@@ -13,6 +13,7 @@
#include <linux/types.h>
#include <linux/string.h>
#include <linux/uaccess.h>
+#include <net/checksum.h>
#define ldq_u(x,y) \
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index bc8d6aecfbbd..2d98501c0897 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -6,6 +6,7 @@
config ARC
def_bool y
select ARC_TIMERS
+ select ARCH_HAS_CACHE_LINE_SIZE
select ARCH_HAS_DEBUG_VM_PGTABLE
select ARCH_HAS_DMA_PREP_COHERENT
select ARCH_HAS_PTE_SPECIAL
@@ -28,6 +29,7 @@ config ARC
select GENERIC_SMP_IDLE_THREAD
select HAVE_ARCH_KGDB
select HAVE_ARCH_TRACEHOOK
+ select HAVE_ARCH_TRANSPARENT_HUGEPAGE if ARC_MMU_V4
select HAVE_DEBUG_STACKOVERFLOW
select HAVE_DEBUG_KMEMLEAK
select HAVE_FUTEX_CMPXCHG if FUTEX
@@ -48,9 +50,6 @@ config ARC
select HAVE_ARCH_JUMP_LABEL if ISA_ARCV2 && !CPU_ENDIAN_BE32
select SET_FS
-config ARCH_HAS_CACHE_LINE_SIZE
- def_bool y
-
config TRACE_IRQFLAGS_SUPPORT
def_bool y
@@ -86,10 +85,6 @@ config STACKTRACE_SUPPORT
def_bool y
select STACKTRACE
-config HAVE_ARCH_TRANSPARENT_HUGEPAGE
- def_bool y
- depends on ARC_MMU_V4
-
menu "ARC Architecture Configuration"
menu "ARC Platform/SoC/Board"
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 085c830d344b..24804f11302d 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -31,6 +31,7 @@ config ARM
select ARCH_OPTIONAL_KERNEL_RWX if ARCH_HAS_STRICT_KERNEL_RWX
select ARCH_OPTIONAL_KERNEL_RWX_DEFAULT if CPU_V7
select ARCH_SUPPORTS_ATOMIC_RMW
+ select ARCH_SUPPORTS_HUGETLBFS if ARM_LPAE
select ARCH_USE_BUILTIN_BSWAP
select ARCH_USE_CMPXCHG_LOCKREF
select ARCH_USE_MEMTEST
@@ -77,6 +78,7 @@ config ARM
select HAVE_ARCH_SECCOMP_FILTER if AEABI && !OABI_COMPAT
select HAVE_ARCH_THREAD_STRUCT_WHITELIST
select HAVE_ARCH_TRACEHOOK
+ select HAVE_ARCH_TRANSPARENT_HUGEPAGE if ARM_LPAE
select HAVE_ARM_SMCCC if CPU_V7
select HAVE_EBPF_JIT if !CPU_ENDIAN_BE32
select HAVE_CONTEXT_TRACKING
@@ -1511,14 +1513,6 @@ config HW_PERF_EVENTS
def_bool y
depends on ARM_PMU
-config SYS_SUPPORTS_HUGETLBFS
- def_bool y
- depends on ARM_LPAE
-
-config HAVE_ARCH_TRANSPARENT_HUGEPAGE
- def_bool y
- depends on ARM_LPAE
-
config ARCH_WANT_GENERAL_HUGETLB
def_bool y
diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile
index fd94e27ba4fa..c1f804768621 100644
--- a/arch/arm/boot/compressed/Makefile
+++ b/arch/arm/boot/compressed/Makefile
@@ -118,8 +118,8 @@ asflags-y := -DZIMAGE
# Supply kernel BSS size to the decompressor via a linker symbol.
KBSS_SZ = $(shell echo $$(($$($(NM) $(obj)/../../../../vmlinux | \
- sed -n -e 's/^\([^ ]*\) [AB] __bss_start$$/-0x\1/p' \
- -e 's/^\([^ ]*\) [AB] __bss_stop$$/+0x\1/p') )) )
+ sed -n -e 's/^\([^ ]*\) [ABD] __bss_start$$/-0x\1/p' \
+ -e 's/^\([^ ]*\) [ABD] __bss_stop$$/+0x\1/p') )) )
LDFLAGS_vmlinux = --defsym _kernel_bss_size=$(KBSS_SZ)
# Supply ZRELADDR to the decompressor via a linker symbol.
ifneq ($(CONFIG_AUTO_ZRELADDR),y)
diff --git a/arch/arm/boot/dts/rk3036.dtsi b/arch/arm/boot/dts/rk3036.dtsi
index 47a787a12e55..e24230d50a78 100644
--- a/arch/arm/boot/dts/rk3036.dtsi
+++ b/arch/arm/boot/dts/rk3036.dtsi
@@ -355,7 +355,6 @@
reg = <0x20050000 0x10>;
#pwm-cells = <3>;
clocks = <&cru PCLK_PWM>;
- clock-names = "pwm";
pinctrl-names = "default";
pinctrl-0 = <&pwm0_pin>;
status = "disabled";
@@ -366,7 +365,6 @@
reg = <0x20050010 0x10>;
#pwm-cells = <3>;
clocks = <&cru PCLK_PWM>;
- clock-names = "pwm";
pinctrl-names = "default";
pinctrl-0 = <&pwm1_pin>;
status = "disabled";
@@ -377,7 +375,6 @@
reg = <0x20050020 0x10>;
#pwm-cells = <3>;
clocks = <&cru PCLK_PWM>;
- clock-names = "pwm";
pinctrl-names = "default";
pinctrl-0 = <&pwm2_pin>;
status = "disabled";
@@ -388,7 +385,6 @@
reg = <0x20050030 0x10>;
#pwm-cells = <2>;
clocks = <&cru PCLK_PWM>;
- clock-names = "pwm";
pinctrl-names = "default";
pinctrl-0 = <&pwm3_pin>;
status = "disabled";
diff --git a/arch/arm/boot/dts/rk3288.dtsi b/arch/arm/boot/dts/rk3288.dtsi
index ea7416c31f9b..05557ad02b33 100644
--- a/arch/arm/boot/dts/rk3288.dtsi
+++ b/arch/arm/boot/dts/rk3288.dtsi
@@ -679,7 +679,6 @@
pinctrl-names = "default";
pinctrl-0 = <&pwm0_pin>;
clocks = <&cru PCLK_RKPWM>;
- clock-names = "pwm";
status = "disabled";
};
@@ -690,7 +689,6 @@
pinctrl-names = "default";
pinctrl-0 = <&pwm1_pin>;
clocks = <&cru PCLK_RKPWM>;
- clock-names = "pwm";
status = "disabled";
};
@@ -701,7 +699,6 @@
pinctrl-names = "default";
pinctrl-0 = <&pwm2_pin>;
clocks = <&cru PCLK_RKPWM>;
- clock-names = "pwm";
status = "disabled";
};
@@ -712,7 +709,6 @@
pinctrl-names = "default";
pinctrl-0 = <&pwm3_pin>;
clocks = <&cru PCLK_RKPWM>;
- clock-names = "pwm";
status = "disabled";
};
diff --git a/arch/arm/configs/dove_defconfig b/arch/arm/configs/dove_defconfig
index e70c997d5f4c..b935162a8bba 100644
--- a/arch/arm/configs/dove_defconfig
+++ b/arch/arm/configs/dove_defconfig
@@ -63,7 +63,6 @@ CONFIG_INPUT_EVDEV=y
# CONFIG_MOUSE_PS2 is not set
# CONFIG_SERIO is not set
CONFIG_LEGACY_PTY_COUNT=16
-# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_RUNTIME_UARTS=2
diff --git a/arch/arm/configs/footbridge_defconfig b/arch/arm/configs/footbridge_defconfig
index 3a7938f244e5..2aa3ebeb89d7 100644
--- a/arch/arm/configs/footbridge_defconfig
+++ b/arch/arm/configs/footbridge_defconfig
@@ -7,7 +7,6 @@ CONFIG_EXPERT=y
CONFIG_MODULES=y
CONFIG_ARCH_FOOTBRIDGE=y
CONFIG_ARCH_CATS=y
-CONFIG_ARCH_PERSONAL_SERVER=y
CONFIG_ARCH_EBSA285_HOST=y
CONFIG_ARCH_NETWINDER=y
CONFIG_LEDS=y
diff --git a/arch/arm/configs/magician_defconfig b/arch/arm/configs/magician_defconfig
index b4670d42f378..abde1fb23b20 100644
--- a/arch/arm/configs/magician_defconfig
+++ b/arch/arm/configs/magician_defconfig
@@ -72,7 +72,6 @@ CONFIG_INPUT_TOUCHSCREEN=y
CONFIG_INPUT_MISC=y
CONFIG_INPUT_UINPUT=m
# CONFIG_SERIO is not set
-# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_PXA=y
# CONFIG_LEGACY_PTYS is not set
# CONFIG_HW_RANDOM is not set
diff --git a/arch/arm/configs/moxart_defconfig b/arch/arm/configs/moxart_defconfig
index 6834e97af348..eacc089d86c5 100644
--- a/arch/arm/configs/moxart_defconfig
+++ b/arch/arm/configs/moxart_defconfig
@@ -79,7 +79,6 @@ CONFIG_INPUT_EVBUG=y
# CONFIG_SERIO is not set
# CONFIG_VT is not set
# CONFIG_LEGACY_PTYS is not set
-# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_NR_UARTS=1
diff --git a/arch/arm/configs/mps2_defconfig b/arch/arm/configs/mps2_defconfig
index 1d923dbb9928..89f4a6ff30bd 100644
--- a/arch/arm/configs/mps2_defconfig
+++ b/arch/arm/configs/mps2_defconfig
@@ -69,7 +69,6 @@ CONFIG_SMSC911X=y
# CONFIG_VT is not set
# CONFIG_LEGACY_PTYS is not set
CONFIG_SERIAL_NONSTANDARD=y
-# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_MPS2_UART_CONSOLE=y
CONFIG_SERIAL_MPS2_UART=y
# CONFIG_HW_RANDOM is not set
diff --git a/arch/arm/configs/mvebu_v5_defconfig b/arch/arm/configs/mvebu_v5_defconfig
index 4f16716bfc32..d57ff30dabff 100644
--- a/arch/arm/configs/mvebu_v5_defconfig
+++ b/arch/arm/configs/mvebu_v5_defconfig
@@ -100,7 +100,6 @@ CONFIG_INPUT_EVDEV=y
CONFIG_KEYBOARD_GPIO=y
# CONFIG_INPUT_MOUSE is not set
CONFIG_LEGACY_PTY_COUNT=16
-# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_RUNTIME_UARTS=2
diff --git a/arch/arm/configs/xcep_defconfig b/arch/arm/configs/xcep_defconfig
index f1fbdfc5c8c6..4d8e7f2eaef7 100644
--- a/arch/arm/configs/xcep_defconfig
+++ b/arch/arm/configs/xcep_defconfig
@@ -53,7 +53,6 @@ CONFIG_NET_ETHERNET=y
# CONFIG_INPUT_KEYBOARD is not set
# CONFIG_INPUT_MOUSE is not set
# CONFIG_SERIO is not set
-# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_PXA=y
CONFIG_SERIAL_PXA_CONSOLE=y
# CONFIG_LEGACY_PTYS is not set
diff --git a/arch/arm/include/asm/bug.h b/arch/arm/include/asm/bug.h
index 673c7dd75ab9..ba8d9d7d242b 100644
--- a/arch/arm/include/asm/bug.h
+++ b/arch/arm/include/asm/bug.h
@@ -88,5 +88,6 @@ extern asmlinkage void c_backtrace(unsigned long fp, int pmode,
struct mm_struct;
void show_pte(const char *lvl, struct mm_struct *mm, unsigned long addr);
extern void __show_regs(struct pt_regs *);
+extern void __show_regs_alloc_free(struct pt_regs *regs);
#endif
diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h
index fc748122f1e0..f74944c6fe8d 100644
--- a/arch/arm/include/asm/io.h
+++ b/arch/arm/include/asm/io.h
@@ -430,11 +430,6 @@ extern void pci_iounmap(struct pci_dev *dev, void __iomem *addr);
*/
#define xlate_dev_mem_ptr(p) __va(p)
-/*
- * Convert a virtual cached pointer to an uncached pointer
- */
-#define xlate_dev_kmem_ptr(p) p
-
#include <asm-generic/io.h>
#ifdef CONFIG_MMU
diff --git a/arch/arm/include/asm/kexec.h b/arch/arm/include/asm/kexec.h
index 22751b5b5735..e62832dcba76 100644
--- a/arch/arm/include/asm/kexec.h
+++ b/arch/arm/include/asm/kexec.h
@@ -56,9 +56,6 @@ static inline void crash_setup_regs(struct pt_regs *newregs,
}
}
-/* Function pointer to optional machine-specific reinitialization */
-extern void (*kexec_reinit)(void);
-
static inline unsigned long phys_to_boot_phys(phys_addr_t phys)
{
return phys_to_idmap(phys);
diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h
index 2f841cb65c30..a711322d9f40 100644
--- a/arch/arm/include/asm/memory.h
+++ b/arch/arm/include/asm/memory.h
@@ -150,21 +150,6 @@ extern unsigned long vectors_base;
*/
#define PLAT_PHYS_OFFSET UL(CONFIG_PHYS_OFFSET)
-#ifdef CONFIG_XIP_KERNEL
-/*
- * When referencing data in RAM from the XIP region in a relative manner
- * with the MMU off, we need the relative offset between the two physical
- * addresses. The macro below achieves this, which is:
- * __pa(v_data) - __xip_pa(v_text)
- */
-#define PHYS_RELATIVE(v_data, v_text) \
- (((v_data) - PAGE_OFFSET + PLAT_PHYS_OFFSET) - \
- ((v_text) - XIP_VIRT_ADDR(CONFIG_XIP_PHYS_ADDR) + \
- CONFIG_XIP_PHYS_ADDR))
-#else
-#define PHYS_RELATIVE(v_data, v_text) ((v_data) - (v_text))
-#endif
-
#ifndef __ASSEMBLY__
/*
diff --git a/arch/arm/include/asm/set_memory.h b/arch/arm/include/asm/set_memory.h
index a1ceff4295d3..ec17fc0fda7a 100644
--- a/arch/arm/include/asm/set_memory.h
+++ b/arch/arm/include/asm/set_memory.h
@@ -18,12 +18,4 @@ static inline int set_memory_x(unsigned long addr, int numpages) { return 0; }
static inline int set_memory_nx(unsigned long addr, int numpages) { return 0; }
#endif
-#ifdef CONFIG_STRICT_KERNEL_RWX
-void set_kernel_text_rw(void);
-void set_kernel_text_ro(void);
-#else
-static inline void set_kernel_text_rw(void) { }
-static inline void set_kernel_text_ro(void) { }
-#endif
-
#endif
diff --git a/arch/arm/include/uapi/asm/Kbuild b/arch/arm/include/uapi/asm/Kbuild
index ce8573157774..63748af8bc9d 100644
--- a/arch/arm/include/uapi/asm/Kbuild
+++ b/arch/arm/include/uapi/asm/Kbuild
@@ -1,6 +1,5 @@
# SPDX-License-Identifier: GPL-2.0
-generated-y += unistd-common.h
generated-y += unistd-oabi.h
generated-y += unistd-eabi.h
generic-y += kvm_para.h
diff --git a/arch/arm/include/uapi/asm/unistd.h b/arch/arm/include/uapi/asm/unistd.h
index 93ecf8aa4fe5..ae7749e15726 100644
--- a/arch/arm/include/uapi/asm/unistd.h
+++ b/arch/arm/include/uapi/asm/unistd.h
@@ -24,7 +24,6 @@
#include <asm/unistd-oabi.h>
#endif
-#include <asm/unistd-common.h>
#define __NR_sync_file_range2 __NR_arm_sync_file_range
/*
diff --git a/arch/arm/kernel/asm-offsets.c b/arch/arm/kernel/asm-offsets.c
index be8050b0c3df..70993af22d80 100644
--- a/arch/arm/kernel/asm-offsets.c
+++ b/arch/arm/kernel/asm-offsets.c
@@ -24,6 +24,7 @@
#include <asm/vdso_datapage.h>
#include <asm/hardware/cache-l2x0.h>
#include <linux/kbuild.h>
+#include <linux/arm-smccc.h>
#include "signal.h"
/*
@@ -148,6 +149,8 @@ int main(void)
DEFINE(SLEEP_SAVE_SP_PHYS, offsetof(struct sleep_save_sp, save_ptr_stash_phys));
DEFINE(SLEEP_SAVE_SP_VIRT, offsetof(struct sleep_save_sp, save_ptr_stash));
#endif
+ DEFINE(ARM_SMCCC_QUIRK_ID_OFFS, offsetof(struct arm_smccc_quirk, id));
+ DEFINE(ARM_SMCCC_QUIRK_STATE_OFFS, offsetof(struct arm_smccc_quirk, state));
BLANK();
DEFINE(DMA_BIDIRECTIONAL, DMA_BIDIRECTIONAL);
DEFINE(DMA_TO_DEVICE, DMA_TO_DEVICE);
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
index e0d7833a1827..7f0b7aba1498 100644
--- a/arch/arm/kernel/entry-common.S
+++ b/arch/arm/kernel/entry-common.S
@@ -344,20 +344,19 @@ ENTRY(\sym)
.size \sym, . - \sym
.endm
-#define NATIVE(nr, func) syscall nr, func
+#define __SYSCALL_WITH_COMPAT(nr, native, compat) __SYSCALL(nr, native)
+#define __SYSCALL(nr, func) syscall nr, func
/*
* This is the syscall table declaration for native ABI syscalls.
* With EABI a couple syscalls are obsolete and defined as sys_ni_syscall.
*/
syscall_table_start sys_call_table
-#define COMPAT(nr, native, compat) syscall nr, native
#ifdef CONFIG_AEABI
#include <calls-eabi.S>
#else
#include <calls-oabi.S>
#endif
-#undef COMPAT
syscall_table_end sys_call_table
/*============================================================================
@@ -455,7 +454,8 @@ ENDPROC(sys_oabi_readahead)
* using the compatibility syscall entries.
*/
syscall_table_start sys_oabi_call_table
-#define COMPAT(nr, native, compat) syscall nr, compat
+#undef __SYSCALL_WITH_COMPAT
+#define __SYSCALL_WITH_COMPAT(nr, native, compat) __SYSCALL(nr, compat)
#include <calls-oabi.S>
syscall_table_end sys_oabi_call_table
diff --git a/arch/arm/kernel/hw_breakpoint.c b/arch/arm/kernel/hw_breakpoint.c
index 08660ae9dcbc..b1423fb130ea 100644
--- a/arch/arm/kernel/hw_breakpoint.c
+++ b/arch/arm/kernel/hw_breakpoint.c
@@ -886,7 +886,7 @@ static void breakpoint_handler(unsigned long unknown, struct pt_regs *regs)
info->trigger = addr;
pr_debug("breakpoint fired: address = 0x%x\n", addr);
perf_bp_event(bp, regs);
- if (!bp->overflow_handler)
+ if (is_default_overflow_handler(bp))
enable_single_step(bp, addr);
goto unlock;
}
diff --git a/arch/arm/kernel/machine_kexec.c b/arch/arm/kernel/machine_kexec.c
index 2b09dad7935e..f567032a09c0 100644
--- a/arch/arm/kernel/machine_kexec.c
+++ b/arch/arm/kernel/machine_kexec.c
@@ -147,11 +147,6 @@ void machine_crash_shutdown(struct pt_regs *regs)
pr_info("Loading crashdump kernel...\n");
}
-/*
- * Function pointer to optional machine-specific reinitialization
- */
-void (*kexec_reinit)(void);
-
void machine_kexec(struct kimage *image)
{
unsigned long page_list, reboot_entry_phys;
@@ -187,9 +182,6 @@ void machine_kexec(struct kimage *image)
pr_info("Bye!\n");
- if (kexec_reinit)
- kexec_reinit();
-
soft_restart(reboot_entry_phys);
}
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 5199a2bb4111..6324f4db9b02 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -92,6 +92,17 @@ void arch_cpu_idle_exit(void)
ledtrig_cpu(CPU_LED_IDLE_END);
}
+void __show_regs_alloc_free(struct pt_regs *regs)
+{
+ int i;
+
+ /* check for r0 - r12 only */
+ for (i = 0; i < 13; i++) {
+ pr_alert("Register r%d information:", i);
+ mem_dump_obj((void *)regs->uregs[i]);
+ }
+}
+
void __show_regs(struct pt_regs *regs)
{
unsigned long flags;
diff --git a/arch/arm/kernel/smccc-call.S b/arch/arm/kernel/smccc-call.S
index 00664c78faca..931df62a7831 100644
--- a/arch/arm/kernel/smccc-call.S
+++ b/arch/arm/kernel/smccc-call.S
@@ -3,7 +3,9 @@
* Copyright (c) 2015, Linaro Limited
*/
#include <linux/linkage.h>
+#include <linux/arm-smccc.h>
+#include <asm/asm-offsets.h>
#include <asm/opcodes-sec.h>
#include <asm/opcodes-virt.h>
#include <asm/unwind.h>
@@ -27,7 +29,14 @@ UNWIND( .fnstart)
UNWIND( .save {r4-r7})
ldm r12, {r4-r7}
\instr
- pop {r4-r7}
+ ldr r4, [sp, #36]
+ cmp r4, #0
+ beq 1f // No quirk structure
+ ldr r5, [r4, #ARM_SMCCC_QUIRK_ID_OFFS]
+ cmp r5, #ARM_SMCCC_QUIRK_QCOM_A6
+ bne 1f // No quirk present
+ str r6, [r4, #ARM_SMCCC_QUIRK_STATE_OFFS]
+1: pop {r4-r7}
ldr r12, [sp, #(4 * 4)]
stm r12, {r0-r3}
bx lr
diff --git a/arch/arm/kernel/suspend.c b/arch/arm/kernel/suspend.c
index 24bd20564be7..43f0a3ebf390 100644
--- a/arch/arm/kernel/suspend.c
+++ b/arch/arm/kernel/suspend.c
@@ -1,4 +1,5 @@
// SPDX-License-Identifier: GPL-2.0
+#include <linux/ftrace.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/mm_types.h>
@@ -26,12 +27,22 @@ int cpu_suspend(unsigned long arg, int (*fn)(unsigned long))
return -EINVAL;
/*
+ * Function graph tracer state gets incosistent when the kernel
+ * calls functions that never return (aka suspend finishers) hence
+ * disable graph tracing during their execution.
+ */
+ pause_graph_tracing();
+
+ /*
* Provide a temporary page table with an identity mapping for
* the MMU-enable code, required for resuming. On successful
* resume (indicated by a zero return code), we need to switch
* back to the correct page tables.
*/
ret = __cpu_suspend(arg, fn, __mpidr);
+
+ unpause_graph_tracing();
+
if (ret == 0) {
cpu_switch_mm(mm->pgd, mm);
local_flush_bp_all();
@@ -45,7 +56,13 @@ int cpu_suspend(unsigned long arg, int (*fn)(unsigned long))
int cpu_suspend(unsigned long arg, int (*fn)(unsigned long))
{
u32 __mpidr = cpu_logical_map(smp_processor_id());
- return __cpu_suspend(arg, fn, __mpidr);
+ int ret;
+
+ pause_graph_tracing();
+ ret = __cpu_suspend(arg, fn, __mpidr);
+ unpause_graph_tracing();
+
+ return ret;
}
#define idmap_pgd NULL
#endif
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 17d5a785df28..64308e3a5d0c 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -287,6 +287,7 @@ static int __die(const char *str, int err, struct pt_regs *regs)
print_modules();
__show_regs(regs);
+ __show_regs_alloc_free(regs);
pr_emerg("Process %.*s (pid: %d, stack limit = 0x%p)\n",
TASK_COMM_LEN, tsk->comm, task_pid_nr(tsk), end_of_stack(tsk));
diff --git a/arch/arm/mach-footbridge/Kconfig b/arch/arm/mach-footbridge/Kconfig
index 844aa585b966..728aff93fba9 100644
--- a/arch/arm/mach-footbridge/Kconfig
+++ b/arch/arm/mach-footbridge/Kconfig
@@ -16,27 +16,6 @@ config ARCH_CATS
Saying N will reduce the size of the Footbridge kernel.
-config ARCH_PERSONAL_SERVER
- bool "Compaq Personal Server"
- select FOOTBRIDGE_HOST
- select ISA
- select ISA_DMA
- select FORCE_PCI
- help
- Say Y here if you intend to run this kernel on the Compaq
- Personal Server.
-
- Saying N will reduce the size of the Footbridge kernel.
-
- The Compaq Personal Server is not available for purchase.
- There are no product plans beyond the current research
- prototypes at this time. Information is available at:
-
- <http://www.crl.hpl.hp.com/projects/personalserver/>
-
- If you have any questions or comments about the Compaq Personal
- Server, send e-mail to <skiff@crl.dec.com>.
-
config ARCH_EBSA285_ADDIN
bool "EBSA285 (addin mode)"
select ARCH_EBSA285
diff --git a/arch/arm/mach-footbridge/Makefile b/arch/arm/mach-footbridge/Makefile
index a09f1041f141..6262993c0555 100644
--- a/arch/arm/mach-footbridge/Makefile
+++ b/arch/arm/mach-footbridge/Makefile
@@ -11,12 +11,10 @@ pci-y += dc21285.o
pci-$(CONFIG_ARCH_CATS) += cats-pci.o
pci-$(CONFIG_ARCH_EBSA285_HOST) += ebsa285-pci.o
pci-$(CONFIG_ARCH_NETWINDER) += netwinder-pci.o
-pci-$(CONFIG_ARCH_PERSONAL_SERVER) += personal-pci.o
obj-$(CONFIG_ARCH_CATS) += cats-hw.o isa-timer.o
obj-$(CONFIG_ARCH_EBSA285) += ebsa285.o dc21285-timer.o
obj-$(CONFIG_ARCH_NETWINDER) += netwinder-hw.o isa-timer.o
-obj-$(CONFIG_ARCH_PERSONAL_SERVER) += personal.o dc21285-timer.o
obj-$(CONFIG_PCI) +=$(pci-y)
diff --git a/arch/arm/mach-footbridge/personal-pci.c b/arch/arm/mach-footbridge/personal-pci.c
deleted file mode 100644
index 9d19aa98a663..000000000000
--- a/arch/arm/mach-footbridge/personal-pci.c
+++ /dev/null
@@ -1,57 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * linux/arch/arm/mach-footbridge/personal-pci.c
- *
- * PCI bios-type initialisation for PCI machines
- *
- * Bits taken from various places.
- */
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-
-#include <asm/irq.h>
-#include <asm/mach/pci.h>
-#include <asm/mach-types.h>
-
-static int irqmap_personal_server[] = {
- IRQ_IN0, IRQ_IN1, IRQ_IN2, IRQ_IN3, 0, 0, 0,
- IRQ_DOORBELLHOST, IRQ_DMA1, IRQ_DMA2, IRQ_PCI
-};
-
-static int personal_server_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
-{
- unsigned char line;
-
- pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &line);
-
- if (line > 0x40 && line <= 0x5f) {
- /* line corresponds to the bit controlling this interrupt
- * in the footbridge. Ignore the first 8 interrupt bits,
- * look up the rest in the map. IN0 is bit number 8
- */
- return irqmap_personal_server[(line & 0x1f) - 8];
- } else if (line == 0) {
- /* no interrupt */
- return 0;
- } else
- return irqmap_personal_server[(line - 1) & 3];
-}
-
-static struct hw_pci personal_server_pci __initdata = {
- .map_irq = personal_server_map_irq,
- .nr_controllers = 1,
- .ops = &dc21285_ops,
- .setup = dc21285_setup,
- .preinit = dc21285_preinit,
- .postinit = dc21285_postinit,
-};
-
-static int __init personal_pci_init(void)
-{
- if (machine_is_personal_server())
- pci_common_init(&personal_server_pci);
- return 0;
-}
-
-subsys_initcall(personal_pci_init);
diff --git a/arch/arm/mach-footbridge/personal.c b/arch/arm/mach-footbridge/personal.c
deleted file mode 100644
index ca715754fc00..000000000000
--- a/arch/arm/mach-footbridge/personal.c
+++ /dev/null
@@ -1,25 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * linux/arch/arm/mach-footbridge/personal.c
- *
- * Personal server (Skiff) machine fixup
- */
-#include <linux/init.h>
-#include <linux/spinlock.h>
-
-#include <asm/hardware/dec21285.h>
-#include <asm/mach-types.h>
-
-#include <asm/mach/arch.h>
-
-#include "common.h"
-
-MACHINE_START(PERSONAL_SERVER, "Compaq-PersonalServer")
- /* Maintainer: Jamey Hicks / George France */
- .atag_offset = 0x100,
- .map_io = footbridge_map_io,
- .init_irq = footbridge_init_irq,
- .init_time = footbridge_timer_init,
- .restart = footbridge_restart,
-MACHINE_END
-
diff --git a/arch/arm/mach-iop32x/n2100.c b/arch/arm/mach-iop32x/n2100.c
index 78b9a5ee41c9..bf99e718f8b8 100644
--- a/arch/arm/mach-iop32x/n2100.c
+++ b/arch/arm/mach-iop32x/n2100.c
@@ -116,16 +116,16 @@ static struct hw_pci n2100_pci __initdata = {
};
/*
- * Both r8169 chips on the n2100 exhibit PCI parity problems. Set
- * the ->broken_parity_status flag for both ports so that the r8169
- * driver knows it should ignore error interrupts.
+ * Both r8169 chips on the n2100 exhibit PCI parity problems. Turn
+ * off parity reporting for both ports so we don't get error interrupts
+ * for them.
*/
static void n2100_fixup_r8169(struct pci_dev *dev)
{
if (dev->bus->number == 0 &&
(dev->devfn == PCI_DEVFN(1, 0) ||
dev->devfn == PCI_DEVFN(2, 0)))
- dev->broken_parity_status = 1;
+ pci_disable_parity(dev);
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, PCI_ANY_ID, n2100_fixup_r8169);
diff --git a/arch/arm/mm/cache-v7.S b/arch/arm/mm/cache-v7.S
index dc8f152f3556..830bbfb26ca5 100644
--- a/arch/arm/mm/cache-v7.S
+++ b/arch/arm/mm/cache-v7.S
@@ -33,41 +33,41 @@ icache_size:
* processor. We fix this by performing an invalidate, rather than a
* clean + invalidate, before jumping into the kernel.
*
- * This function is cloned from arch/arm/mach-tegra/headsmp.S, and needs
- * to be called for both secondary cores startup and primary core resume
- * procedures.
+ * This function needs to be called for both secondary cores startup and
+ * primary core resume procedures.
*/
ENTRY(v7_invalidate_l1)
- mov r0, #0
- mcr p15, 2, r0, c0, c0, 0
- mrc p15, 1, r0, c0, c0, 0
-
- movw r1, #0x7fff
- and r2, r1, r0, lsr #13
+ mov r0, #0
+ mcr p15, 2, r0, c0, c0, 0 @ select L1 data cache in CSSELR
+ isb
+ mrc p15, 1, r0, c0, c0, 0 @ read cache geometry from CCSIDR
- movw r1, #0x3ff
+ movw r3, #0x3ff
+ and r3, r3, r0, lsr #3 @ 'Associativity' in CCSIDR[12:3]
+ clz r1, r3 @ WayShift
+ mov r2, #1
+ mov r3, r3, lsl r1 @ NumWays-1 shifted into bits [31:...]
+ movs r1, r2, lsl r1 @ #1 shifted left by same amount
+ moveq r1, #1 @ r1 needs value > 0 even if only 1 way
- and r3, r1, r0, lsr #3 @ NumWays - 1
- add r2, r2, #1 @ NumSets
+ and r2, r0, #0x7
+ add r2, r2, #4 @ SetShift
- and r0, r0, #0x7
- add r0, r0, #4 @ SetShift
+1: movw ip, #0x7fff
+ and r0, ip, r0, lsr #13 @ 'NumSets' in CCSIDR[27:13]
- clz r1, r3 @ WayShift
- add r4, r3, #1 @ NumWays
-1: sub r2, r2, #1 @ NumSets--
- mov r3, r4 @ Temp = NumWays
-2: subs r3, r3, #1 @ Temp--
- mov r5, r3, lsl r1
- mov r6, r2, lsl r0
- orr r5, r5, r6 @ Reg = (Temp<<WayShift)|(NumSets<<SetShift)
- mcr p15, 0, r5, c7, c6, 2
- bgt 2b
- cmp r2, #0
- bgt 1b
- dsb st
- isb
- ret lr
+2: mov ip, r0, lsl r2 @ NumSet << SetShift
+ orr ip, ip, r3 @ Reg = (Temp<<WayShift)|(NumSets<<SetShift)
+ mcr p15, 0, ip, c7, c6, 2
+ subs r0, r0, #1 @ Set--
+ bpl 2b
+ subs r3, r3, r1 @ Way--
+ bcc 3f
+ mrc p15, 1, r0, c0, c0, 0 @ re-read cache geometry from CCSIDR
+ b 1b
+3: dsb st
+ isb
+ ret lr
ENDPROC(v7_invalidate_l1)
/*
diff --git a/arch/arm/mm/dump.c b/arch/arm/mm/dump.c
index 93ff0097f00b..fb688003d156 100644
--- a/arch/arm/mm/dump.c
+++ b/arch/arm/mm/dump.c
@@ -420,7 +420,7 @@ void ptdump_walk_pgd(struct seq_file *m, struct ptdump_info *info)
note_page(&st, 0, 0, 0, NULL);
}
-static void ptdump_initialize(void)
+static void __init ptdump_initialize(void)
{
unsigned i, j;
@@ -466,7 +466,7 @@ void ptdump_check_wx(void)
pr_info("Checked W+X mappings: passed, no W+X pages found\n");
}
-static int ptdump_init(void)
+static int __init ptdump_init(void)
{
ptdump_initialize();
ptdump_debugfs_register(&kernel_ptdump_info, "kernel_page_tables");
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 7022b7b5c400..9d4744a632c6 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -301,7 +301,11 @@ static void __init free_highpages(void)
void __init mem_init(void)
{
#ifdef CONFIG_ARM_LPAE
- swiotlb_init(1);
+ if (swiotlb_force == SWIOTLB_FORCE ||
+ max_pfn > arm_dma_pfn_limit)
+ swiotlb_init(1);
+ else
+ swiotlb_force = SWIOTLB_NO_FORCE;
#endif
set_max_mapnr(pfn_to_page(max_pfn) - mem_map);
@@ -485,33 +489,12 @@ static int __mark_rodata_ro(void *unused)
return 0;
}
-static int kernel_set_to_readonly __read_mostly;
-
void mark_rodata_ro(void)
{
- kernel_set_to_readonly = 1;
stop_machine(__mark_rodata_ro, NULL, NULL);
debug_checkwx();
}
-void set_kernel_text_rw(void)
-{
- if (!kernel_set_to_readonly)
- return;
-
- set_section_perms(ro_perms, ARRAY_SIZE(ro_perms), false,
- current->active_mm);
-}
-
-void set_kernel_text_ro(void)
-{
- if (!kernel_set_to_readonly)
- return;
-
- set_section_perms(ro_perms, ARRAY_SIZE(ro_perms), true,
- current->active_mm);
-}
-
#else
static inline void fix_kernmem_perms(void) { }
#endif /* CONFIG_STRICT_KERNEL_RWX */
diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S
index 28c9d32fa99a..26d726a08a34 100644
--- a/arch/arm/mm/proc-v7.S
+++ b/arch/arm/mm/proc-v7.S
@@ -256,6 +256,20 @@ ENDPROC(cpu_pj4b_do_resume)
#endif
+ @
+ @ Invoke the v7_invalidate_l1() function, which adheres to the AAPCS
+ @ rules, and so it may corrupt registers that we need to preserve.
+ @
+ .macro do_invalidate_l1
+ mov r6, r1
+ mov r7, r2
+ mov r10, lr
+ bl v7_invalidate_l1 @ corrupts {r0-r3, ip, lr}
+ mov r1, r6
+ mov r2, r7
+ mov lr, r10
+ .endm
+
/*
* __v7_setup
*
@@ -277,6 +291,7 @@ __v7_ca5mp_setup:
__v7_ca9mp_setup:
__v7_cr7mp_setup:
__v7_cr8mp_setup:
+ do_invalidate_l1
mov r10, #(1 << 0) @ Cache/TLB ops broadcasting
b 1f
__v7_ca7mp_setup:
@@ -284,13 +299,9 @@ __v7_ca12mp_setup:
__v7_ca15mp_setup:
__v7_b15mp_setup:
__v7_ca17mp_setup:
+ do_invalidate_l1
mov r10, #0
-1: adr r0, __v7_setup_stack_ptr
- ldr r12, [r0]
- add r12, r12, r0 @ the local stack
- stmia r12, {r1-r6, lr} @ v7_invalidate_l1 touches r0-r6
- bl v7_invalidate_l1
- ldmia r12, {r1-r6, lr}
+1:
#ifdef CONFIG_SMP
orr r10, r10, #(1 << 6) @ Enable SMP/nAMP mode
ALT_SMP(mrc p15, 0, r0, c1, c0, 1)
@@ -471,12 +482,7 @@ __v7_pj4b_setup:
#endif /* CONFIG_CPU_PJ4B */
__v7_setup:
- adr r0, __v7_setup_stack_ptr
- ldr r12, [r0]
- add r12, r12, r0 @ the local stack
- stmia r12, {r1-r6, lr} @ v7_invalidate_l1 touches r0-r6
- bl v7_invalidate_l1
- ldmia r12, {r1-r6, lr}
+ do_invalidate_l1
__v7_setup_cont:
and r0, r9, #0xff000000 @ ARM?
@@ -548,17 +554,8 @@ __errata_finish:
orr r0, r0, r6 @ set them
THUMB( orr r0, r0, #1 << 30 ) @ Thumb exceptions
ret lr @ return to head.S:__ret
-
- .align 2
-__v7_setup_stack_ptr:
- .word PHYS_RELATIVE(__v7_setup_stack, .)
ENDPROC(__v7_setup)
- .bss
- .align 2
-__v7_setup_stack:
- .space 4 * 7 @ 7 registers
-
__INITDATA
.weak cpu_v7_bugs_init
diff --git a/arch/arm/mm/ptdump_debugfs.c b/arch/arm/mm/ptdump_debugfs.c
index 598b636615a2..318de969ae0f 100644
--- a/arch/arm/mm/ptdump_debugfs.c
+++ b/arch/arm/mm/ptdump_debugfs.c
@@ -11,20 +11,9 @@ static int ptdump_show(struct seq_file *m, void *v)
ptdump_walk_pgd(m, info);
return 0;
}
+DEFINE_SHOW_ATTRIBUTE(ptdump);
-static int ptdump_open(struct inode *inode, struct file *file)
-{
- return single_open(file, ptdump_show, inode->i_private);
-}
-
-static const struct file_operations ptdump_fops = {
- .open = ptdump_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-void ptdump_debugfs_register(struct ptdump_info *info, const char *name)
+void __init ptdump_debugfs_register(struct ptdump_info *info, const char *name)
{
debugfs_create_file(name, 0400, NULL, info, &ptdump_fops);
}
diff --git a/arch/arm/probes/kprobes/test-arm.c b/arch/arm/probes/kprobes/test-arm.c
index 977369f1aa48..a0dae35ffacd 100644
--- a/arch/arm/probes/kprobes/test-arm.c
+++ b/arch/arm/probes/kprobes/test-arm.c
@@ -55,25 +55,25 @@ void kprobe_arm_test_cases(void)
TEST_GROUP("Data-processing (register), (register-shifted register), (immediate)")
#define _DATA_PROCESSING_DNM(op,s,val) \
- TEST_RR( op "eq" s " r0, r",1, VAL1,", r",2, val, "") \
- TEST_RR( op "ne" s " r1, r",1, VAL1,", r",2, val, ", lsl #3") \
- TEST_RR( op "cs" s " r2, r",3, VAL1,", r",2, val, ", lsr #4") \
- TEST_RR( op "cc" s " r3, r",3, VAL1,", r",2, val, ", asr #5") \
- TEST_RR( op "mi" s " r4, r",5, VAL1,", r",2, N(val),", asr #6") \
- TEST_RR( op "pl" s " r5, r",5, VAL1,", r",2, val, ", ror #7") \
- TEST_RR( op "vs" s " r6, r",7, VAL1,", r",2, val, ", rrx") \
- TEST_R( op "vc" s " r6, r",7, VAL1,", pc, lsl #3") \
- TEST_R( op "vc" s " r6, r",7, VAL1,", sp, lsr #4") \
- TEST_R( op "vc" s " r6, pc, r",7, VAL1,", asr #5") \
- TEST_R( op "vc" s " r6, sp, r",7, VAL1,", ror #6") \
- TEST_RRR( op "hi" s " r8, r",9, VAL1,", r",14,val, ", lsl r",0, 3,"")\
- TEST_RRR( op "ls" s " r9, r",9, VAL1,", r",14,val, ", lsr r",7, 4,"")\
- TEST_RRR( op "ge" s " r10, r",11,VAL1,", r",14,val, ", asr r",7, 5,"")\
- TEST_RRR( op "lt" s " r11, r",11,VAL1,", r",14,N(val),", asr r",7, 6,"")\
- TEST_RR( op "gt" s " r12, r13" ", r",14,val, ", ror r",14,7,"")\
- TEST_RR( op "le" s " r14, r",0, val, ", r13" ", lsl r",14,8,"")\
- TEST_R( op "eq" s " r0, r",11,VAL1,", #0xf5") \
- TEST_R( op "ne" s " r11, r",0, VAL1,", #0xf5000000") \
+ TEST_RR( op s "eq r0, r",1, VAL1,", r",2, val, "") \
+ TEST_RR( op s "ne r1, r",1, VAL1,", r",2, val, ", lsl #3") \
+ TEST_RR( op s "cs r2, r",3, VAL1,", r",2, val, ", lsr #4") \
+ TEST_RR( op s "cc r3, r",3, VAL1,", r",2, val, ", asr #5") \
+ TEST_RR( op s "mi r4, r",5, VAL1,", r",2, N(val),", asr #6") \
+ TEST_RR( op s "pl r5, r",5, VAL1,", r",2, val, ", ror #7") \
+ TEST_RR( op s "vs r6, r",7, VAL1,", r",2, val, ", rrx") \
+ TEST_R( op s "vc r6, r",7, VAL1,", pc, lsl #3") \
+ TEST_R( op s "vc r6, r",7, VAL1,", sp, lsr #4") \
+ TEST_R( op s "vc r6, pc, r",7, VAL1,", asr #5") \
+ TEST_R( op s "vc r6, sp, r",7, VAL1,", ror #6") \
+ TEST_RRR( op s "hi r8, r",9, VAL1,", r",14,val, ", lsl r",0, 3,"")\
+ TEST_RRR( op s "ls r9, r",9, VAL1,", r",14,val, ", lsr r",7, 4,"")\
+ TEST_RRR( op s "ge r10, r",11,VAL1,", r",14,val, ", asr r",7, 5,"")\
+ TEST_RRR( op s "lt r11, r",11,VAL1,", r",14,N(val),", asr r",7, 6,"")\
+ TEST_RR( op s "gt r12, r13" ", r",14,val, ", ror r",14,7,"")\
+ TEST_RR( op s "le r14, r",0, val, ", r13" ", lsl r",14,8,"")\
+ TEST_R( op s "eq r0, r",11,VAL1,", #0xf5") \
+ TEST_R( op s "ne r11, r",0, VAL1,", #0xf5000000") \
TEST_R( op s " r7, r",8, VAL2,", #0x000af000") \
TEST( op s " r4, pc" ", #0x00005a00")
@@ -104,23 +104,23 @@ void kprobe_arm_test_cases(void)
TEST_R( op " r",8, VAL2,", #0x000af000")
#define _DATA_PROCESSING_DM(op,s,val) \
- TEST_R( op "eq" s " r0, r",1, val, "") \
- TEST_R( op "ne" s " r1, r",1, val, ", lsl #3") \
- TEST_R( op "cs" s " r2, r",3, val, ", lsr #4") \
- TEST_R( op "cc" s " r3, r",3, val, ", asr #5") \
- TEST_R( op "mi" s " r4, r",5, N(val),", asr #6") \
- TEST_R( op "pl" s " r5, r",5, val, ", ror #7") \
- TEST_R( op "vs" s " r6, r",10,val, ", rrx") \
- TEST( op "vs" s " r7, pc, lsl #3") \
- TEST( op "vs" s " r7, sp, lsr #4") \
- TEST_RR( op "vc" s " r8, r",7, val, ", lsl r",0, 3,"") \
- TEST_RR( op "hi" s " r9, r",9, val, ", lsr r",7, 4,"") \
- TEST_RR( op "ls" s " r10, r",9, val, ", asr r",7, 5,"") \
- TEST_RR( op "ge" s " r11, r",11,N(val),", asr r",7, 6,"") \
- TEST_RR( op "lt" s " r12, r",11,val, ", ror r",14,7,"") \
- TEST_R( op "gt" s " r14, r13" ", lsl r",14,8,"") \
- TEST( op "eq" s " r0, #0xf5") \
- TEST( op "ne" s " r11, #0xf5000000") \
+ TEST_R( op s "eq r0, r",1, val, "") \
+ TEST_R( op s "ne r1, r",1, val, ", lsl #3") \
+ TEST_R( op s "cs r2, r",3, val, ", lsr #4") \
+ TEST_R( op s "cc r3, r",3, val, ", asr #5") \
+ TEST_R( op s "mi r4, r",5, N(val),", asr #6") \
+ TEST_R( op s "pl r5, r",5, val, ", ror #7") \
+ TEST_R( op s "vs r6, r",10,val, ", rrx") \
+ TEST( op s "vs r7, pc, lsl #3") \
+ TEST( op s "vs r7, sp, lsr #4") \
+ TEST_RR( op s "vc r8, r",7, val, ", lsl r",0, 3,"") \
+ TEST_RR( op s "hi r9, r",9, val, ", lsr r",7, 4,"") \
+ TEST_RR( op s "ls r10, r",9, val, ", asr r",7, 5,"") \
+ TEST_RR( op s "ge r11, r",11,N(val),", asr r",7, 6,"") \
+ TEST_RR( op s "lt r12, r",11,val, ", ror r",14,7,"") \
+ TEST_R( op s "gt r14, r13" ", lsl r",14,8,"") \
+ TEST( op s "eq r0, #0xf5") \
+ TEST( op s "ne r11, #0xf5000000") \
TEST( op s " r7, #0x000af000") \
TEST( op s " r4, #0x00005a00")
@@ -166,10 +166,10 @@ void kprobe_arm_test_cases(void)
/* Data-processing with PC as a target and status registers updated */
TEST_UNSUPPORTED("movs pc, r1")
- TEST_UNSUPPORTED("movs pc, r1, lsl r2")
+ TEST_UNSUPPORTED(__inst_arm(0xe1b0f211) " @movs pc, r1, lsl r2")
TEST_UNSUPPORTED("movs pc, #0x10000")
TEST_UNSUPPORTED("adds pc, lr, r1")
- TEST_UNSUPPORTED("adds pc, lr, r1, lsl r2")
+ TEST_UNSUPPORTED(__inst_arm(0xe09ef211) " @adds pc, lr, r1, lsl r2")
TEST_UNSUPPORTED("adds pc, lr, #4")
/* Data-processing with SP as target */
@@ -352,7 +352,7 @@ void kprobe_arm_test_cases(void)
TEST_UNSUPPORTED(__inst_arm(0xe000029f) " @ mul r0, pc, r2")
TEST_UNSUPPORTED(__inst_arm(0xe0000f91) " @ mul r0, r1, pc")
TEST_RR( "muls r0, r",1, VAL1,", r",2, VAL2,"")
- TEST_RR( "mullss r7, r",8, VAL2,", r",9, VAL2,"")
+ TEST_RR( "mulsls r7, r",8, VAL2,", r",9, VAL2,"")
TEST_R( "muls lr, r",4, VAL3,", r13")
TEST_UNSUPPORTED(__inst_arm(0xe01f0291) " @ muls pc, r1, r2")
@@ -361,7 +361,7 @@ void kprobe_arm_test_cases(void)
TEST_RR( "mla lr, r",1, VAL2,", r",2, VAL3,", r13")
TEST_UNSUPPORTED(__inst_arm(0xe02f3291) " @ mla pc, r1, r2, r3")
TEST_RRR( "mlas r0, r",1, VAL1,", r",2, VAL2,", r",3, VAL3,"")
- TEST_RRR( "mlahis r7, r",8, VAL3,", r",9, VAL1,", r",10, VAL2,"")
+ TEST_RRR( "mlashi r7, r",8, VAL3,", r",9, VAL1,", r",10, VAL2,"")
TEST_RR( "mlas lr, r",1, VAL2,", r",2, VAL3,", r13")
TEST_UNSUPPORTED(__inst_arm(0xe03f3291) " @ mlas pc, r1, r2, r3")
@@ -394,7 +394,7 @@ void kprobe_arm_test_cases(void)
TEST_UNSUPPORTED(__inst_arm(0xe081f392) " @ umull pc, r1, r2, r3")
TEST_UNSUPPORTED(__inst_arm(0xe08f1392) " @ umull r1, pc, r2, r3")
TEST_RR( "umulls r0, r1, r",2, VAL1,", r",3, VAL2,"")
- TEST_RR( "umulllss r7, r8, r",9, VAL2,", r",10, VAL1,"")
+ TEST_RR( "umullsls r7, r8, r",9, VAL2,", r",10, VAL1,"")
TEST_R( "umulls lr, r12, r",11,VAL3,", r13")
TEST_UNSUPPORTED(__inst_arm(0xe091f392) " @ umulls pc, r1, r2, r3")
TEST_UNSUPPORTED(__inst_arm(0xe09f1392) " @ umulls r1, pc, r2, r3")
@@ -405,7 +405,7 @@ void kprobe_arm_test_cases(void)
TEST_UNSUPPORTED(__inst_arm(0xe0af1392) " @ umlal pc, r1, r2, r3")
TEST_UNSUPPORTED(__inst_arm(0xe0a1f392) " @ umlal r1, pc, r2, r3")
TEST_RRRR( "umlals r",0, VAL1,", r",1, VAL2,", r",2, VAL3,", r",3, VAL4)
- TEST_RRRR( "umlalles r",8, VAL4,", r",9, VAL1,", r",10,VAL2,", r",11,VAL3)
+ TEST_RRRR( "umlalsle r",8, VAL4,", r",9, VAL1,", r",10,VAL2,", r",11,VAL3)
TEST_RRR( "umlals r",14,VAL3,", r",7, VAL4,", r",5, VAL1,", r13")
TEST_UNSUPPORTED(__inst_arm(0xe0bf1392) " @ umlals pc, r1, r2, r3")
TEST_UNSUPPORTED(__inst_arm(0xe0b1f392) " @ umlals r1, pc, r2, r3")
@@ -416,7 +416,7 @@ void kprobe_arm_test_cases(void)
TEST_UNSUPPORTED(__inst_arm(0xe0c1f392) " @ smull pc, r1, r2, r3")
TEST_UNSUPPORTED(__inst_arm(0xe0cf1392) " @ smull r1, pc, r2, r3")
TEST_RR( "smulls r0, r1, r",2, VAL1,", r",3, VAL2,"")
- TEST_RR( "smulllss r7, r8, r",9, VAL2,", r",10, VAL1,"")
+ TEST_RR( "smullsls r7, r8, r",9, VAL2,", r",10, VAL1,"")
TEST_R( "smulls lr, r12, r",11,VAL3,", r13")
TEST_UNSUPPORTED(__inst_arm(0xe0d1f392) " @ smulls pc, r1, r2, r3")
TEST_UNSUPPORTED(__inst_arm(0xe0df1392) " @ smulls r1, pc, r2, r3")
@@ -427,7 +427,7 @@ void kprobe_arm_test_cases(void)
TEST_UNSUPPORTED(__inst_arm(0xe0ef1392) " @ smlal pc, r1, r2, r3")
TEST_UNSUPPORTED(__inst_arm(0xe0e1f392) " @ smlal r1, pc, r2, r3")
TEST_RRRR( "smlals r",0, VAL1,", r",1, VAL2,", r",2, VAL3,", r",3, VAL4)
- TEST_RRRR( "smlalles r",8, VAL4,", r",9, VAL1,", r",10,VAL2,", r",11,VAL3)
+ TEST_RRRR( "smlalsle r",8, VAL4,", r",9, VAL1,", r",10,VAL2,", r",11,VAL3)
TEST_RRR( "smlals r",14,VAL3,", r",7, VAL4,", r",5, VAL1,", r13")
TEST_UNSUPPORTED(__inst_arm(0xe0ff1392) " @ smlals pc, r1, r2, r3")
TEST_UNSUPPORTED(__inst_arm(0xe0f0f392) " @ smlals r0, pc, r2, r3")
@@ -450,7 +450,7 @@ void kprobe_arm_test_cases(void)
TEST_UNSUPPORTED(__inst_arm(0xe10f0091) " @ swp r0, r1, [pc]")
#if __LINUX_ARM_ARCH__ < 6
TEST_RP("swpb lr, r",7,VAL2,", [r",8,0,"]")
- TEST_R( "swpvsb r0, r",1,VAL1,", [sp]")
+ TEST_R( "swpbvs r0, r",1,VAL1,", [sp]")
#else
TEST_UNSUPPORTED(__inst_arm(0xe148e097) " @ swpb lr, r7, [r8]")
TEST_UNSUPPORTED(__inst_arm(0x614d0091) " @ swpvsb r0, r1, [sp]")
@@ -477,11 +477,11 @@ void kprobe_arm_test_cases(void)
TEST_GROUP("Extra load/store instructions")
TEST_RPR( "strh r",0, VAL1,", [r",1, 48,", -r",2, 24,"]")
- TEST_RPR( "streqh r",14,VAL2,", [r",11,0, ", r",12, 48,"]")
- TEST_UNSUPPORTED( "streqh r14, [r13, r12]")
- TEST_UNSUPPORTED( "streqh r14, [r12, r13]")
+ TEST_RPR( "strheq r",14,VAL2,", [r",11,0, ", r",12, 48,"]")
+ TEST_UNSUPPORTED( "strheq r14, [r13, r12]")
+ TEST_UNSUPPORTED( "strheq r14, [r12, r13]")
TEST_RPR( "strh r",1, VAL1,", [r",2, 24,", r",3, 48,"]!")
- TEST_RPR( "strneh r",12,VAL2,", [r",11,48,", -r",10,24,"]!")
+ TEST_RPR( "strhne r",12,VAL2,", [r",11,48,", -r",10,24,"]!")
TEST_RPR( "strh r",2, VAL1,", [r",3, 24,"], r",4, 48,"")
TEST_RPR( "strh r",10,VAL2,", [r",9, 48,"], -r",11,24,"")
TEST_UNSUPPORTED(__inst_arm(0xe1afc0ba) " @ strh r12, [pc, r10]!")
@@ -489,9 +489,9 @@ void kprobe_arm_test_cases(void)
TEST_UNSUPPORTED(__inst_arm(0xe089a0bf) " @ strh r10, [r9], pc")
TEST_PR( "ldrh r0, [r",0, 48,", -r",2, 24,"]")
- TEST_PR( "ldrcsh r14, [r",13,0, ", r",12, 48,"]")
+ TEST_PR( "ldrhcs r14, [r",13,0, ", r",12, 48,"]")
TEST_PR( "ldrh r1, [r",2, 24,", r",3, 48,"]!")
- TEST_PR( "ldrcch r12, [r",11,48,", -r",10,24,"]!")
+ TEST_PR( "ldrhcc r12, [r",11,48,", -r",10,24,"]!")
TEST_PR( "ldrh r2, [r",3, 24,"], r",4, 48,"")
TEST_PR( "ldrh r10, [r",9, 48,"], -r",11,24,"")
TEST_UNSUPPORTED(__inst_arm(0xe1bfc0ba) " @ ldrh r12, [pc, r10]!")
@@ -499,9 +499,9 @@ void kprobe_arm_test_cases(void)
TEST_UNSUPPORTED(__inst_arm(0xe099a0bf) " @ ldrh r10, [r9], pc")
TEST_RP( "strh r",0, VAL1,", [r",1, 24,", #-2]")
- TEST_RP( "strmih r",14,VAL2,", [r",13,0, ", #2]")
+ TEST_RP( "strhmi r",14,VAL2,", [r",13,0, ", #2]")
TEST_RP( "strh r",1, VAL1,", [r",2, 24,", #4]!")
- TEST_RP( "strplh r",12,VAL2,", [r",11,24,", #-4]!")
+ TEST_RP( "strhpl r",12,VAL2,", [r",11,24,", #-4]!")
TEST_RP( "strh r",2, VAL1,", [r",3, 24,"], #48")
TEST_RP( "strh r",10,VAL2,", [r",9, 64,"], #-48")
TEST_RP( "strh r",3, VAL1,", [r",13,TEST_MEMORY_SIZE,", #-"__stringify(MAX_STACK_SIZE)"]!")
@@ -511,9 +511,9 @@ void kprobe_arm_test_cases(void)
TEST_UNSUPPORTED(__inst_arm(0xe0c9f3b0) " @ strh pc, [r9], #48")
TEST_P( "ldrh r0, [r",0, 24,", #-2]")
- TEST_P( "ldrvsh r14, [r",13,0, ", #2]")
+ TEST_P( "ldrhvs r14, [r",13,0, ", #2]")
TEST_P( "ldrh r1, [r",2, 24,", #4]!")
- TEST_P( "ldrvch r12, [r",11,24,", #-4]!")
+ TEST_P( "ldrhvc r12, [r",11,24,", #-4]!")
TEST_P( "ldrh r2, [r",3, 24,"], #48")
TEST_P( "ldrh r10, [r",9, 64,"], #-48")
TEST( "ldrh r0, [pc, #0]")
@@ -521,18 +521,18 @@ void kprobe_arm_test_cases(void)
TEST_UNSUPPORTED(__inst_arm(0xe0d9f3b0) " @ ldrh pc, [r9], #48")
TEST_PR( "ldrsb r0, [r",0, 48,", -r",2, 24,"]")
- TEST_PR( "ldrhisb r14, [r",13,0,", r",12, 48,"]")
+ TEST_PR( "ldrsbhi r14, [r",13,0,", r",12, 48,"]")
TEST_PR( "ldrsb r1, [r",2, 24,", r",3, 48,"]!")
- TEST_PR( "ldrlssb r12, [r",11,48,", -r",10,24,"]!")
+ TEST_PR( "ldrsbls r12, [r",11,48,", -r",10,24,"]!")
TEST_PR( "ldrsb r2, [r",3, 24,"], r",4, 48,"")
TEST_PR( "ldrsb r10, [r",9, 48,"], -r",11,24,"")
TEST_UNSUPPORTED(__inst_arm(0xe1bfc0da) " @ ldrsb r12, [pc, r10]!")
TEST_UNSUPPORTED(__inst_arm(0xe099f0db) " @ ldrsb pc, [r9], r11")
TEST_P( "ldrsb r0, [r",0, 24,", #-1]")
- TEST_P( "ldrgesb r14, [r",13,0, ", #1]")
+ TEST_P( "ldrsbge r14, [r",13,0, ", #1]")
TEST_P( "ldrsb r1, [r",2, 24,", #4]!")
- TEST_P( "ldrltsb r12, [r",11,24,", #-4]!")
+ TEST_P( "ldrsblt r12, [r",11,24,", #-4]!")
TEST_P( "ldrsb r2, [r",3, 24,"], #48")
TEST_P( "ldrsb r10, [r",9, 64,"], #-48")
TEST( "ldrsb r0, [pc, #0]")
@@ -540,18 +540,18 @@ void kprobe_arm_test_cases(void)
TEST_UNSUPPORTED(__inst_arm(0xe0d9f3d0) " @ ldrsb pc, [r9], #48")
TEST_PR( "ldrsh r0, [r",0, 48,", -r",2, 24,"]")
- TEST_PR( "ldrgtsh r14, [r",13,0, ", r",12, 48,"]")
+ TEST_PR( "ldrshgt r14, [r",13,0, ", r",12, 48,"]")
TEST_PR( "ldrsh r1, [r",2, 24,", r",3, 48,"]!")
- TEST_PR( "ldrlesh r12, [r",11,48,", -r",10,24,"]!")
+ TEST_PR( "ldrshle r12, [r",11,48,", -r",10,24,"]!")
TEST_PR( "ldrsh r2, [r",3, 24,"], r",4, 48,"")
TEST_PR( "ldrsh r10, [r",9, 48,"], -r",11,24,"")
TEST_UNSUPPORTED(__inst_arm(0xe1bfc0fa) " @ ldrsh r12, [pc, r10]!")
TEST_UNSUPPORTED(__inst_arm(0xe099f0fb) " @ ldrsh pc, [r9], r11")
TEST_P( "ldrsh r0, [r",0, 24,", #-1]")
- TEST_P( "ldreqsh r14, [r",13,0 ,", #1]")
+ TEST_P( "ldrsheq r14, [r",13,0 ,", #1]")
TEST_P( "ldrsh r1, [r",2, 24,", #4]!")
- TEST_P( "ldrnesh r12, [r",11,24,", #-4]!")
+ TEST_P( "ldrshne r12, [r",11,24,", #-4]!")
TEST_P( "ldrsh r2, [r",3, 24,"], #48")
TEST_P( "ldrsh r10, [r",9, 64,"], #-48")
TEST( "ldrsh r0, [pc, #0]")
@@ -571,30 +571,30 @@ void kprobe_arm_test_cases(void)
#if __LINUX_ARM_ARCH__ >= 5
TEST_RPR( "strd r",0, VAL1,", [r",1, 48,", -r",2,24,"]")
- TEST_RPR( "strccd r",8, VAL2,", [r",11,0, ", r",12,48,"]")
- TEST_UNSUPPORTED( "strccd r8, [r13, r12]")
- TEST_UNSUPPORTED( "strccd r8, [r12, r13]")
+ TEST_RPR( "strdcc r",8, VAL2,", [r",11,0, ", r",12,48,"]")
+ TEST_UNSUPPORTED( "strdcc r8, [r13, r12]")
+ TEST_UNSUPPORTED( "strdcc r8, [r12, r13]")
TEST_RPR( "strd r",4, VAL1,", [r",2, 24,", r",3, 48,"]!")
- TEST_RPR( "strcsd r",12,VAL2,", [r",11,48,", -r",10,24,"]!")
- TEST_RPR( "strd r",2, VAL1,", [r",5, 24,"], r",4,48,"")
- TEST_RPR( "strd r",10,VAL2,", [r",9, 48,"], -r",7,24,"")
+ TEST_RPR( "strdcs r",12,VAL2,", r13, [r",11,48,", -r",10,24,"]!")
+ TEST_RPR( "strd r",2, VAL1,", r3, [r",5, 24,"], r",4,48,"")
+ TEST_RPR( "strd r",10,VAL2,", r11, [r",9, 48,"], -r",7,24,"")
TEST_UNSUPPORTED(__inst_arm(0xe1afc0fa) " @ strd r12, [pc, r10]!")
TEST_PR( "ldrd r0, [r",0, 48,", -r",2,24,"]")
- TEST_PR( "ldrmid r8, [r",13,0, ", r",12,48,"]")
+ TEST_PR( "ldrdmi r8, [r",13,0, ", r",12,48,"]")
TEST_PR( "ldrd r4, [r",2, 24,", r",3, 48,"]!")
- TEST_PR( "ldrpld r6, [r",11,48,", -r",10,24,"]!")
- TEST_PR( "ldrd r2, [r",5, 24,"], r",4,48,"")
- TEST_PR( "ldrd r10, [r",9,48,"], -r",7,24,"")
+ TEST_PR( "ldrdpl r6, [r",11,48,", -r",10,24,"]!")
+ TEST_PR( "ldrd r2, r3, [r",5, 24,"], r",4,48,"")
+ TEST_PR( "ldrd r10, r11, [r",9,48,"], -r",7,24,"")
TEST_UNSUPPORTED(__inst_arm(0xe1afc0da) " @ ldrd r12, [pc, r10]!")
TEST_UNSUPPORTED(__inst_arm(0xe089f0db) " @ ldrd pc, [r9], r11")
TEST_UNSUPPORTED(__inst_arm(0xe089e0db) " @ ldrd lr, [r9], r11")
TEST_UNSUPPORTED(__inst_arm(0xe089c0df) " @ ldrd r12, [r9], pc")
TEST_RP( "strd r",0, VAL1,", [r",1, 24,", #-8]")
- TEST_RP( "strvsd r",8, VAL2,", [r",13,0, ", #8]")
+ TEST_RP( "strdvs r",8, VAL2,", [r",13,0, ", #8]")
TEST_RP( "strd r",4, VAL1,", [r",2, 24,", #16]!")
- TEST_RP( "strvcd r",12,VAL2,", [r",11,24,", #-16]!")
+ TEST_RP( "strdvc r",12,VAL2,", r13, [r",11,24,", #-16]!")
TEST_RP( "strd r",2, VAL1,", [r",4, 24,"], #48")
TEST_RP( "strd r",10,VAL2,", [r",9, 64,"], #-48")
TEST_RP( "strd r",6, VAL1,", [r",13,TEST_MEMORY_SIZE,", #-"__stringify(MAX_STACK_SIZE)"]!")
@@ -603,9 +603,9 @@ void kprobe_arm_test_cases(void)
TEST_UNSUPPORTED(__inst_arm(0xe1efc3f0) " @ strd r12, [pc, #48]!")
TEST_P( "ldrd r0, [r",0, 24,", #-8]")
- TEST_P( "ldrhid r8, [r",13,0, ", #8]")
+ TEST_P( "ldrdhi r8, [r",13,0, ", #8]")
TEST_P( "ldrd r4, [r",2, 24,", #16]!")
- TEST_P( "ldrlsd r6, [r",11,24,", #-16]!")
+ TEST_P( "ldrdls r6, [r",11,24,", #-16]!")
TEST_P( "ldrd r2, [r",5, 24,"], #48")
TEST_P( "ldrd r10, [r",9,6,"], #-48")
TEST_UNSUPPORTED(__inst_arm(0xe1efc3d0) " @ ldrd r12, [pc, #48]!")
@@ -1084,63 +1084,63 @@ void kprobe_arm_test_cases(void)
TEST_GROUP("Branch, branch with link, and block data transfer")
TEST_P( "stmda r",0, 16*4,", {r0}")
- TEST_P( "stmeqda r",4, 16*4,", {r0-r15}")
- TEST_P( "stmneda r",8, 16*4,"!, {r8-r15}")
+ TEST_P( "stmdaeq r",4, 16*4,", {r0-r15}")
+ TEST_P( "stmdane r",8, 16*4,"!, {r8-r15}")
TEST_P( "stmda r",12,16*4,"!, {r1,r3,r5,r7,r8-r11,r14}")
TEST_P( "stmda r",13,0, "!, {pc}")
TEST_P( "ldmda r",0, 16*4,", {r0}")
- TEST_BF_P("ldmcsda r",4, 15*4,", {r0-r15}")
- TEST_BF_P("ldmccda r",7, 15*4,"!, {r8-r15}")
+ TEST_BF_P("ldmdacs r",4, 15*4,", {r0-r15}")
+ TEST_BF_P("ldmdacc r",7, 15*4,"!, {r8-r15}")
TEST_P( "ldmda r",12,16*4,"!, {r1,r3,r5,r7,r8-r11,r14}")
TEST_BF_P("ldmda r",14,15*4,"!, {pc}")
TEST_P( "stmia r",0, 16*4,", {r0}")
- TEST_P( "stmmiia r",4, 16*4,", {r0-r15}")
- TEST_P( "stmplia r",8, 16*4,"!, {r8-r15}")
+ TEST_P( "stmiami r",4, 16*4,", {r0-r15}")
+ TEST_P( "stmiapl r",8, 16*4,"!, {r8-r15}")
TEST_P( "stmia r",12,16*4,"!, {r1,r3,r5,r7,r8-r11,r14}")
TEST_P( "stmia r",14,0, "!, {pc}")
TEST_P( "ldmia r",0, 16*4,", {r0}")
- TEST_BF_P("ldmvsia r",4, 0, ", {r0-r15}")
- TEST_BF_P("ldmvcia r",7, 8*4, "!, {r8-r15}")
+ TEST_BF_P("ldmiavs r",4, 0, ", {r0-r15}")
+ TEST_BF_P("ldmiavc r",7, 8*4, "!, {r8-r15}")
TEST_P( "ldmia r",12,16*4,"!, {r1,r3,r5,r7,r8-r11,r14}")
TEST_BF_P("ldmia r",14,15*4,"!, {pc}")
TEST_P( "stmdb r",0, 16*4,", {r0}")
- TEST_P( "stmhidb r",4, 16*4,", {r0-r15}")
- TEST_P( "stmlsdb r",8, 16*4,"!, {r8-r15}")
+ TEST_P( "stmdbhi r",4, 16*4,", {r0-r15}")
+ TEST_P( "stmdbls r",8, 16*4,"!, {r8-r15}")
TEST_P( "stmdb r",12,16*4,"!, {r1,r3,r5,r7,r8-r11,r14}")
TEST_P( "stmdb r",13,4, "!, {pc}")
TEST_P( "ldmdb r",0, 16*4,", {r0}")
- TEST_BF_P("ldmgedb r",4, 16*4,", {r0-r15}")
- TEST_BF_P("ldmltdb r",7, 16*4,"!, {r8-r15}")
+ TEST_BF_P("ldmdbge r",4, 16*4,", {r0-r15}")
+ TEST_BF_P("ldmdblt r",7, 16*4,"!, {r8-r15}")
TEST_P( "ldmdb r",12,16*4,"!, {r1,r3,r5,r7,r8-r11,r14}")
TEST_BF_P("ldmdb r",14,16*4,"!, {pc}")
TEST_P( "stmib r",0, 16*4,", {r0}")
- TEST_P( "stmgtib r",4, 16*4,", {r0-r15}")
- TEST_P( "stmleib r",8, 16*4,"!, {r8-r15}")
+ TEST_P( "stmibgt r",4, 16*4,", {r0-r15}")
+ TEST_P( "stmible r",8, 16*4,"!, {r8-r15}")
TEST_P( "stmib r",12,16*4,"!, {r1,r3,r5,r7,r8-r11,r14}")
TEST_P( "stmib r",13,-4, "!, {pc}")
TEST_P( "ldmib r",0, 16*4,", {r0}")
- TEST_BF_P("ldmeqib r",4, -4,", {r0-r15}")
- TEST_BF_P("ldmneib r",7, 7*4,"!, {r8-r15}")
+ TEST_BF_P("ldmibeq r",4, -4,", {r0-r15}")
+ TEST_BF_P("ldmibne r",7, 7*4,"!, {r8-r15}")
TEST_P( "ldmib r",12,16*4,"!, {r1,r3,r5,r7,r8-r11,r14}")
TEST_BF_P("ldmib r",14,14*4,"!, {pc}")
TEST_P( "stmdb r",13,16*4,"!, {r3-r12,lr}")
- TEST_P( "stmeqdb r",13,16*4,"!, {r3-r12}")
- TEST_P( "stmnedb r",2, 16*4,", {r3-r12,lr}")
+ TEST_P( "stmdbeq r",13,16*4,"!, {r3-r12}")
+ TEST_P( "stmdbne r",2, 16*4,", {r3-r12,lr}")
TEST_P( "stmdb r",13,16*4,"!, {r2-r12,lr}")
TEST_P( "stmdb r",0, 16*4,", {r0-r12}")
TEST_P( "stmdb r",0, 16*4,", {r0-r12,lr}")
TEST_BF_P("ldmia r",13,5*4, "!, {r3-r12,pc}")
- TEST_P( "ldmccia r",13,5*4, "!, {r3-r12}")
- TEST_BF_P("ldmcsia r",2, 5*4, "!, {r3-r12,pc}")
+ TEST_P( "ldmiacc r",13,5*4, "!, {r3-r12}")
+ TEST_BF_P("ldmiacs r",2, 5*4, "!, {r3-r12,pc}")
TEST_BF_P("ldmia r",13,4*4, "!, {r2-r12,pc}")
TEST_P( "ldmia r",0, 16*4,", {r0-r12}")
TEST_P( "ldmia r",0, 16*4,", {r0-r12,lr}")
@@ -1174,80 +1174,80 @@ void kprobe_arm_test_cases(void)
#define TEST_COPROCESSOR(code) TEST_UNSUPPORTED(code)
#define COPROCESSOR_INSTRUCTIONS_ST_LD(two,cc) \
- TEST_COPROCESSOR("stc"two" 0, cr0, [r13, #4]") \
- TEST_COPROCESSOR("stc"two" 0, cr0, [r13, #-4]") \
- TEST_COPROCESSOR("stc"two" 0, cr0, [r13, #4]!") \
- TEST_COPROCESSOR("stc"two" 0, cr0, [r13, #-4]!") \
- TEST_COPROCESSOR("stc"two" 0, cr0, [r13], #4") \
- TEST_COPROCESSOR("stc"two" 0, cr0, [r13], #-4") \
- TEST_COPROCESSOR("stc"two" 0, cr0, [r13], {1}") \
- TEST_COPROCESSOR("stc"two"l 0, cr0, [r13, #4]") \
- TEST_COPROCESSOR("stc"two"l 0, cr0, [r13, #-4]") \
- TEST_COPROCESSOR("stc"two"l 0, cr0, [r13, #4]!") \
- TEST_COPROCESSOR("stc"two"l 0, cr0, [r13, #-4]!") \
- TEST_COPROCESSOR("stc"two"l 0, cr0, [r13], #4") \
- TEST_COPROCESSOR("stc"two"l 0, cr0, [r13], #-4") \
- TEST_COPROCESSOR("stc"two"l 0, cr0, [r13], {1}") \
- TEST_COPROCESSOR("ldc"two" 0, cr0, [r13, #4]") \
- TEST_COPROCESSOR("ldc"two" 0, cr0, [r13, #-4]") \
- TEST_COPROCESSOR("ldc"two" 0, cr0, [r13, #4]!") \
- TEST_COPROCESSOR("ldc"two" 0, cr0, [r13, #-4]!") \
- TEST_COPROCESSOR("ldc"two" 0, cr0, [r13], #4") \
- TEST_COPROCESSOR("ldc"two" 0, cr0, [r13], #-4") \
- TEST_COPROCESSOR("ldc"two" 0, cr0, [r13], {1}") \
- TEST_COPROCESSOR("ldc"two"l 0, cr0, [r13, #4]") \
- TEST_COPROCESSOR("ldc"two"l 0, cr0, [r13, #-4]") \
- TEST_COPROCESSOR("ldc"two"l 0, cr0, [r13, #4]!") \
- TEST_COPROCESSOR("ldc"two"l 0, cr0, [r13, #-4]!") \
- TEST_COPROCESSOR("ldc"two"l 0, cr0, [r13], #4") \
- TEST_COPROCESSOR("ldc"two"l 0, cr0, [r13], #-4") \
- TEST_COPROCESSOR("ldc"two"l 0, cr0, [r13], {1}") \
+ TEST_COPROCESSOR("stc"two" p0, cr0, [r13, #4]") \
+ TEST_COPROCESSOR("stc"two" p0, cr0, [r13, #-4]") \
+ TEST_COPROCESSOR("stc"two" p0, cr0, [r13, #4]!") \
+ TEST_COPROCESSOR("stc"two" p0, cr0, [r13, #-4]!") \
+ TEST_COPROCESSOR("stc"two" p0, cr0, [r13], #4") \
+ TEST_COPROCESSOR("stc"two" p0, cr0, [r13], #-4") \
+ TEST_COPROCESSOR("stc"two" p0, cr0, [r13], {1}") \
+ TEST_COPROCESSOR("stc"two"l p0, cr0, [r13, #4]") \
+ TEST_COPROCESSOR("stc"two"l p0, cr0, [r13, #-4]") \
+ TEST_COPROCESSOR("stc"two"l p0, cr0, [r13, #4]!") \
+ TEST_COPROCESSOR("stc"two"l p0, cr0, [r13, #-4]!") \
+ TEST_COPROCESSOR("stc"two"l p0, cr0, [r13], #4") \
+ TEST_COPROCESSOR("stc"two"l p0, cr0, [r13], #-4") \
+ TEST_COPROCESSOR("stc"two"l p0, cr0, [r13], {1}") \
+ TEST_COPROCESSOR("ldc"two" p0, cr0, [r13, #4]") \
+ TEST_COPROCESSOR("ldc"two" p0, cr0, [r13, #-4]") \
+ TEST_COPROCESSOR("ldc"two" p0, cr0, [r13, #4]!") \
+ TEST_COPROCESSOR("ldc"two" p0, cr0, [r13, #-4]!") \
+ TEST_COPROCESSOR("ldc"two" p0, cr0, [r13], #4") \
+ TEST_COPROCESSOR("ldc"two" p0, cr0, [r13], #-4") \
+ TEST_COPROCESSOR("ldc"two" p0, cr0, [r13], {1}") \
+ TEST_COPROCESSOR("ldc"two"l p0, cr0, [r13, #4]") \
+ TEST_COPROCESSOR("ldc"two"l p0, cr0, [r13, #-4]") \
+ TEST_COPROCESSOR("ldc"two"l p0, cr0, [r13, #4]!") \
+ TEST_COPROCESSOR("ldc"two"l p0, cr0, [r13, #-4]!") \
+ TEST_COPROCESSOR("ldc"two"l p0, cr0, [r13], #4") \
+ TEST_COPROCESSOR("ldc"two"l p0, cr0, [r13], #-4") \
+ TEST_COPROCESSOR("ldc"two"l p0, cr0, [r13], {1}") \
\
- TEST_COPROCESSOR( "stc"two" 0, cr0, [r15, #4]") \
- TEST_COPROCESSOR( "stc"two" 0, cr0, [r15, #-4]") \
+ TEST_COPROCESSOR( "stc"two" p0, cr0, [r15, #4]") \
+ TEST_COPROCESSOR( "stc"two" p0, cr0, [r15, #-4]") \
TEST_UNSUPPORTED(__inst_arm(0x##cc##daf0001) " @ stc"two" 0, cr0, [r15, #4]!") \
TEST_UNSUPPORTED(__inst_arm(0x##cc##d2f0001) " @ stc"two" 0, cr0, [r15, #-4]!") \
TEST_UNSUPPORTED(__inst_arm(0x##cc##caf0001) " @ stc"two" 0, cr0, [r15], #4") \
TEST_UNSUPPORTED(__inst_arm(0x##cc##c2f0001) " @ stc"two" 0, cr0, [r15], #-4") \
- TEST_COPROCESSOR( "stc"two" 0, cr0, [r15], {1}") \
- TEST_COPROCESSOR( "stc"two"l 0, cr0, [r15, #4]") \
- TEST_COPROCESSOR( "stc"two"l 0, cr0, [r15, #-4]") \
+ TEST_COPROCESSOR( "stc"two" p0, cr0, [r15], {1}") \
+ TEST_COPROCESSOR( "stc"two"l p0, cr0, [r15, #4]") \
+ TEST_COPROCESSOR( "stc"two"l p0, cr0, [r15, #-4]") \
TEST_UNSUPPORTED(__inst_arm(0x##cc##def0001) " @ stc"two"l 0, cr0, [r15, #4]!") \
TEST_UNSUPPORTED(__inst_arm(0x##cc##d6f0001) " @ stc"two"l 0, cr0, [r15, #-4]!") \
TEST_UNSUPPORTED(__inst_arm(0x##cc##cef0001) " @ stc"two"l 0, cr0, [r15], #4") \
TEST_UNSUPPORTED(__inst_arm(0x##cc##c6f0001) " @ stc"two"l 0, cr0, [r15], #-4") \
- TEST_COPROCESSOR( "stc"two"l 0, cr0, [r15], {1}") \
- TEST_COPROCESSOR( "ldc"two" 0, cr0, [r15, #4]") \
- TEST_COPROCESSOR( "ldc"two" 0, cr0, [r15, #-4]") \
+ TEST_COPROCESSOR( "stc"two"l p0, cr0, [r15], {1}") \
+ TEST_COPROCESSOR( "ldc"two" p0, cr0, [r15, #4]") \
+ TEST_COPROCESSOR( "ldc"two" p0, cr0, [r15, #-4]") \
TEST_UNSUPPORTED(__inst_arm(0x##cc##dbf0001) " @ ldc"two" 0, cr0, [r15, #4]!") \
TEST_UNSUPPORTED(__inst_arm(0x##cc##d3f0001) " @ ldc"two" 0, cr0, [r15, #-4]!") \
TEST_UNSUPPORTED(__inst_arm(0x##cc##cbf0001) " @ ldc"two" 0, cr0, [r15], #4") \
TEST_UNSUPPORTED(__inst_arm(0x##cc##c3f0001) " @ ldc"two" 0, cr0, [r15], #-4") \
- TEST_COPROCESSOR( "ldc"two" 0, cr0, [r15], {1}") \
- TEST_COPROCESSOR( "ldc"two"l 0, cr0, [r15, #4]") \
- TEST_COPROCESSOR( "ldc"two"l 0, cr0, [r15, #-4]") \
+ TEST_COPROCESSOR( "ldc"two" p0, cr0, [r15], {1}") \
+ TEST_COPROCESSOR( "ldc"two"l p0, cr0, [r15, #4]") \
+ TEST_COPROCESSOR( "ldc"two"l p0, cr0, [r15, #-4]") \
TEST_UNSUPPORTED(__inst_arm(0x##cc##dff0001) " @ ldc"two"l 0, cr0, [r15, #4]!") \
TEST_UNSUPPORTED(__inst_arm(0x##cc##d7f0001) " @ ldc"two"l 0, cr0, [r15, #-4]!") \
TEST_UNSUPPORTED(__inst_arm(0x##cc##cff0001) " @ ldc"two"l 0, cr0, [r15], #4") \
TEST_UNSUPPORTED(__inst_arm(0x##cc##c7f0001) " @ ldc"two"l 0, cr0, [r15], #-4") \
- TEST_COPROCESSOR( "ldc"two"l 0, cr0, [r15], {1}")
+ TEST_COPROCESSOR( "ldc"two"l p0, cr0, [r15], {1}")
#define COPROCESSOR_INSTRUCTIONS_MC_MR(two,cc) \
\
- TEST_COPROCESSOR( "mcrr"two" 0, 15, r0, r14, cr0") \
- TEST_COPROCESSOR( "mcrr"two" 15, 0, r14, r0, cr15") \
+ TEST_COPROCESSOR( "mcrr"two" p0, 15, r0, r14, cr0") \
+ TEST_COPROCESSOR( "mcrr"two" p15, 0, r14, r0, cr15") \
TEST_UNSUPPORTED(__inst_arm(0x##cc##c4f00f0) " @ mcrr"two" 0, 15, r0, r15, cr0") \
TEST_UNSUPPORTED(__inst_arm(0x##cc##c40ff0f) " @ mcrr"two" 15, 0, r15, r0, cr15") \
- TEST_COPROCESSOR( "mrrc"two" 0, 15, r0, r14, cr0") \
- TEST_COPROCESSOR( "mrrc"two" 15, 0, r14, r0, cr15") \
+ TEST_COPROCESSOR( "mrrc"two" p0, 15, r0, r14, cr0") \
+ TEST_COPROCESSOR( "mrrc"two" p15, 0, r14, r0, cr15") \
TEST_UNSUPPORTED(__inst_arm(0x##cc##c5f00f0) " @ mrrc"two" 0, 15, r0, r15, cr0") \
TEST_UNSUPPORTED(__inst_arm(0x##cc##c50ff0f) " @ mrrc"two" 15, 0, r15, r0, cr15") \
- TEST_COPROCESSOR( "cdp"two" 15, 15, cr15, cr15, cr15, 7") \
- TEST_COPROCESSOR( "cdp"two" 0, 0, cr0, cr0, cr0, 0") \
- TEST_COPROCESSOR( "mcr"two" 15, 7, r15, cr15, cr15, 7") \
- TEST_COPROCESSOR( "mcr"two" 0, 0, r0, cr0, cr0, 0") \
- TEST_COPROCESSOR( "mrc"two" 15, 7, r15, cr15, cr15, 7") \
- TEST_COPROCESSOR( "mrc"two" 0, 0, r0, cr0, cr0, 0")
+ TEST_COPROCESSOR( "cdp"two" p15, 15, cr15, cr15, cr15, 7") \
+ TEST_COPROCESSOR( "cdp"two" p0, 0, cr0, cr0, cr0, 0") \
+ TEST_COPROCESSOR( "mcr"two" p15, 7, r15, cr15, cr15, 7") \
+ TEST_COPROCESSOR( "mcr"two" p0, 0, r0, cr0, cr0, 0") \
+ TEST_COPROCESSOR( "mrc"two" p15, 7, r14, cr15, cr15, 7") \
+ TEST_COPROCESSOR( "mrc"two" p0, 0, r0, cr0, cr0, 0")
COPROCESSOR_INSTRUCTIONS_ST_LD("",e)
#if __LINUX_ARM_ARCH__ >= 5
diff --git a/arch/arm/probes/kprobes/test-core.h b/arch/arm/probes/kprobes/test-core.h
index 19a5b2add41e..f1d5583e7bbb 100644
--- a/arch/arm/probes/kprobes/test-core.h
+++ b/arch/arm/probes/kprobes/test-core.h
@@ -108,6 +108,7 @@ struct test_arg_end {
#define TESTCASE_START(title) \
__asm__ __volatile__ ( \
+ ".syntax unified \n\t" \
"bl __kprobes_test_case_start \n\t" \
".pushsection .rodata \n\t" \
"10: \n\t" \
diff --git a/arch/arm/tools/Makefile b/arch/arm/tools/Makefile
index 3654f979851b..87de1f63f649 100644
--- a/arch/arm/tools/Makefile
+++ b/arch/arm/tools/Makefile
@@ -8,16 +8,15 @@
gen := arch/$(ARCH)/include/generated
kapi := $(gen)/asm
uapi := $(gen)/uapi/asm
-syshdr := $(srctree)/$(src)/syscallhdr.sh
+syshdr := $(srctree)/scripts/syscallhdr.sh
sysnr := $(srctree)/$(src)/syscallnr.sh
-systbl := $(srctree)/$(src)/syscalltbl.sh
+systbl := $(srctree)/scripts/syscalltbl.sh
syscall := $(src)/syscall.tbl
gen-y := $(gen)/calls-oabi.S
gen-y += $(gen)/calls-eabi.S
kapi-hdrs-y := $(kapi)/unistd-nr.h
kapi-hdrs-y += $(kapi)/mach-types.h
-uapi-hdrs-y := $(uapi)/unistd-common.h
uapi-hdrs-y += $(uapi)/unistd-oabi.h
uapi-hdrs-y += $(uapi)/unistd-eabi.h
@@ -41,28 +40,21 @@ $(kapi)/mach-types.h: $(src)/gen-mach-types $(src)/mach-types FORCE
$(call if_changed,gen_mach)
quiet_cmd_syshdr = SYSHDR $@
- cmd_syshdr = $(CONFIG_SHELL) '$(syshdr)' '$<' '$@' \
- '$(syshdr_abi_$(basetarget))' \
- '$(syshdr_pfx_$(basetarget))' \
- '__NR_SYSCALL_BASE'
+ cmd_syshdr = $(CONFIG_SHELL) $(syshdr) --abis $(abis) \
+ --offset __NR_SYSCALL_BASE $< $@
quiet_cmd_systbl = SYSTBL $@
- cmd_systbl = $(CONFIG_SHELL) '$(systbl)' '$<' '$@' \
- '$(systbl_abi_$(basetarget))'
+ cmd_systbl = $(CONFIG_SHELL) $(systbl) --abis $(abis) $< $@
quiet_cmd_sysnr = SYSNR $@
cmd_sysnr = $(CONFIG_SHELL) '$(sysnr)' '$<' '$@' \
'$(syshdr_abi_$(basetarget))'
-syshdr_abi_unistd-common := common
-$(uapi)/unistd-common.h: $(syscall) $(syshdr) FORCE
- $(call if_changed,syshdr)
-
-syshdr_abi_unistd-oabi := oabi
+$(uapi)/unistd-oabi.h: abis := common,oabi
$(uapi)/unistd-oabi.h: $(syscall) $(syshdr) FORCE
$(call if_changed,syshdr)
-syshdr_abi_unistd-eabi := eabi
+$(uapi)/unistd-eabi.h: abis := common,eabi
$(uapi)/unistd-eabi.h: $(syscall) $(syshdr) FORCE
$(call if_changed,syshdr)
@@ -70,10 +62,10 @@ sysnr_abi_unistd-nr := common,oabi,eabi,compat
$(kapi)/unistd-nr.h: $(syscall) $(sysnr) FORCE
$(call if_changed,sysnr)
-systbl_abi_calls-oabi := common,oabi
+$(gen)/calls-oabi.S: abis := common,oabi
$(gen)/calls-oabi.S: $(syscall) $(systbl) FORCE
$(call if_changed,systbl)
-systbl_abi_calls-eabi := common,eabi
+$(gen)/calls-eabi.S: abis := common,eabi
$(gen)/calls-eabi.S: $(syscall) $(systbl) FORCE
$(call if_changed,systbl)
diff --git a/arch/arm/tools/syscallhdr.sh b/arch/arm/tools/syscallhdr.sh
deleted file mode 100644
index 6b2f25cdd721..000000000000
--- a/arch/arm/tools/syscallhdr.sh
+++ /dev/null
@@ -1,31 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-
-in="$1"
-out="$2"
-my_abis=`echo "($3)" | tr ',' '|'`
-prefix="$4"
-offset="$5"
-
-fileguard=_ASM_ARM_`basename "$out" | sed \
- -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \
- -e 's/[^A-Z0-9_]/_/g' -e 's/__/_/g'`
-if echo $out | grep -q uapi; then
- fileguard="_UAPI$fileguard"
-fi
-grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
- echo "#ifndef ${fileguard}"
- echo "#define ${fileguard} 1"
- echo ""
-
- while read nr abi name entry ; do
- if [ -z "$offset" ]; then
- echo "#define __NR_${prefix}${name} $nr"
- else
- echo "#define __NR_${prefix}${name} ($offset + $nr)"
- fi
- done
-
- echo ""
- echo "#endif /* ${fileguard} */"
-) > "$out"
diff --git a/arch/arm/tools/syscalltbl.sh b/arch/arm/tools/syscalltbl.sh
deleted file mode 100644
index ae7e93cfbfd3..000000000000
--- a/arch/arm/tools/syscalltbl.sh
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-in="$1"
-out="$2"
-my_abis=`echo "($3)" | tr ',' '|'`
-
-grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
- while read nr abi name entry compat; do
- if [ "$abi" = "eabi" -a -n "$compat" ]; then
- echo "$in: error: a compat entry for an EABI syscall ($name) makes no sense" >&2
- exit 1
- fi
-
- if [ -n "$entry" ]; then
- if [ -z "$compat" ]; then
- echo "NATIVE($nr, $entry)"
- else
- echo "COMPAT($nr, $entry, $compat)"
- fi
- fi
- done
-) > "$out"
diff --git a/arch/arm/xen/mm.c b/arch/arm/xen/mm.c
index e1b12b242a32..f8f07469d259 100644
--- a/arch/arm/xen/mm.c
+++ b/arch/arm/xen/mm.c
@@ -152,7 +152,7 @@ static int __init xen_mm_init(void)
struct gnttab_cache_flush cflush;
if (!xen_swiotlb_detect())
return 0;
- xen_swiotlb_init(1, false);
+ xen_swiotlb_init();
cflush.op = 0;
cflush.a.dev_bus_addr = 0;
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 7f2a80091337..9f1d8566bbf9 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -11,6 +11,12 @@ config ARM64
select ACPI_PPTT if ACPI
select ARCH_HAS_DEBUG_WX
select ARCH_BINFMT_ELF_STATE
+ select ARCH_ENABLE_HUGEPAGE_MIGRATION if HUGETLB_PAGE && MIGRATION
+ select ARCH_ENABLE_MEMORY_HOTPLUG
+ select ARCH_ENABLE_MEMORY_HOTREMOVE
+ select ARCH_ENABLE_SPLIT_PMD_PTLOCK if PGTABLE_LEVELS > 2
+ select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE
+ select ARCH_HAS_CACHE_LINE_SIZE
select ARCH_HAS_DEBUG_VIRTUAL
select ARCH_HAS_DEBUG_VM_PGTABLE
select ARCH_HAS_DMA_PREP_COHERENT
@@ -72,6 +78,7 @@ config ARM64
select ARCH_USE_QUEUED_SPINLOCKS
select ARCH_USE_SYM_ANNOTATIONS
select ARCH_SUPPORTS_DEBUG_PAGEALLOC
+ select ARCH_SUPPORTS_HUGETLBFS
select ARCH_SUPPORTS_MEMORY_FAILURE
select ARCH_SUPPORTS_SHADOW_CALL_STACK if CC_HAVE_SHADOW_CALL_STACK
select ARCH_SUPPORTS_LTO_CLANG if CPU_LITTLE_ENDIAN
@@ -163,7 +170,6 @@ config ARM64
select HAVE_CMPXCHG_DOUBLE
select HAVE_CMPXCHG_LOCAL
select HAVE_CONTEXT_TRACKING
- select HAVE_DEBUG_BUGVERBOSE
select HAVE_DEBUG_KMEMLEAK
select HAVE_DMA_CONTIGUOUS
select HAVE_DYNAMIC_FTRACE
@@ -213,6 +219,7 @@ config ARM64
select SWIOTLB
select SYSCTL_EXCEPTION_TRACE
select THREAD_INFO_IN_TASK
+ select HAVE_ARCH_USERFAULTFD_MINOR if USERFAULTFD
help
ARM 64-bit (AArch64) Linux support.
@@ -308,10 +315,7 @@ config ZONE_DMA32
bool "Support DMA32 zone" if EXPERT
default y
-config ARCH_ENABLE_MEMORY_HOTPLUG
- def_bool y
-
-config ARCH_ENABLE_MEMORY_HOTREMOVE
+config ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE
def_bool y
config SMP
@@ -1056,32 +1060,15 @@ source "kernel/Kconfig.hz"
config ARCH_SPARSEMEM_ENABLE
def_bool y
select SPARSEMEM_VMEMMAP_ENABLE
-
-config ARCH_SPARSEMEM_DEFAULT
- def_bool ARCH_SPARSEMEM_ENABLE
-
-config ARCH_SELECT_MEMORY_MODEL
- def_bool ARCH_SPARSEMEM_ENABLE
-
-config ARCH_FLATMEM_ENABLE
- def_bool !NUMA
+ select SPARSEMEM_VMEMMAP
config HW_PERF_EVENTS
def_bool y
depends on ARM_PMU
-config SYS_SUPPORTS_HUGETLBFS
- def_bool y
-
-config ARCH_HAS_CACHE_LINE_SIZE
- def_bool y
-
config ARCH_HAS_FILTER_PGPROT
def_bool y
-config ARCH_ENABLE_SPLIT_PMD_PTLOCK
- def_bool y if PGTABLE_LEVELS > 2
-
# Supported by clang >= 7.0
config CC_HAVE_SHADOW_CALL_STACK
def_bool $(cc-option, -fsanitize=shadow-call-stack -ffixed-x18)
@@ -1923,14 +1910,6 @@ config SYSVIPC_COMPAT
def_bool y
depends on COMPAT && SYSVIPC
-config ARCH_ENABLE_HUGEPAGE_MIGRATION
- def_bool y
- depends on HUGETLB_PAGE && MIGRATION
-
-config ARCH_ENABLE_THP_MIGRATION
- def_bool y
- depends on TRANSPARENT_HUGEPAGE
-
menu "Power management options"
source "kernel/power/Kconfig"
diff --git a/arch/arm64/boot/dts/rockchip/rk3368.dtsi b/arch/arm64/boot/dts/rockchip/rk3368.dtsi
index 242f821a90ba..dfc6376171d0 100644
--- a/arch/arm64/boot/dts/rockchip/rk3368.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3368.dtsi
@@ -558,7 +558,6 @@
pinctrl-names = "default";
pinctrl-0 = <&pwm0_pin>;
clocks = <&cru PCLK_PWM1>;
- clock-names = "pwm";
status = "disabled";
};
@@ -569,7 +568,6 @@
pinctrl-names = "default";
pinctrl-0 = <&pwm1_pin>;
clocks = <&cru PCLK_PWM1>;
- clock-names = "pwm";
status = "disabled";
};
@@ -578,7 +576,6 @@
reg = <0x0 0xff680020 0x0 0x10>;
#pwm-cells = <3>;
clocks = <&cru PCLK_PWM1>;
- clock-names = "pwm";
status = "disabled";
};
@@ -589,7 +586,6 @@
pinctrl-names = "default";
pinctrl-0 = <&pwm3_pin>;
clocks = <&cru PCLK_PWM1>;
- clock-names = "pwm";
status = "disabled";
};
diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
index 0f2879cc1a66..634a91af8e83 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
@@ -1182,7 +1182,6 @@
pinctrl-names = "default";
pinctrl-0 = <&pwm0_pin>;
clocks = <&pmucru PCLK_RKPWM_PMU>;
- clock-names = "pwm";
status = "disabled";
};
@@ -1193,7 +1192,6 @@
pinctrl-names = "default";
pinctrl-0 = <&pwm1_pin>;
clocks = <&pmucru PCLK_RKPWM_PMU>;
- clock-names = "pwm";
status = "disabled";
};
@@ -1204,7 +1202,6 @@
pinctrl-names = "default";
pinctrl-0 = <&pwm2_pin>;
clocks = <&pmucru PCLK_RKPWM_PMU>;
- clock-names = "pwm";
status = "disabled";
};
@@ -1215,7 +1212,6 @@
pinctrl-names = "default";
pinctrl-0 = <&pwm3a_pin>;
clocks = <&pmucru PCLK_RKPWM_PMU>;
- clock-names = "pwm";
status = "disabled";
};
diff --git a/arch/arm64/include/asm/daifflags.h b/arch/arm64/include/asm/daifflags.h
index 5eb7af9c4557..55f57dfa8e2f 100644
--- a/arch/arm64/include/asm/daifflags.h
+++ b/arch/arm64/include/asm/daifflags.h
@@ -131,6 +131,9 @@ static inline void local_daif_inherit(struct pt_regs *regs)
if (interrupts_enabled(regs))
trace_hardirqs_on();
+ if (system_uses_irq_prio_masking())
+ gic_write_pmr(regs->pmr_save);
+
/*
* We can't use local_daif_restore(regs->pstate) here as
* system_has_prio_mask_debugging() won't restore the I bit if it can
diff --git a/arch/arm64/include/asm/kernel-pgtable.h b/arch/arm64/include/asm/kernel-pgtable.h
index 587c504a4c8b..d44df9d62fc9 100644
--- a/arch/arm64/include/asm/kernel-pgtable.h
+++ b/arch/arm64/include/asm/kernel-pgtable.h
@@ -136,7 +136,7 @@
* has a direct correspondence, and needs to appear sufficiently aligned
* in the virtual address space.
*/
-#if defined(CONFIG_SPARSEMEM_VMEMMAP) && ARM64_MEMSTART_SHIFT < SECTION_SIZE_BITS
+#if ARM64_MEMSTART_SHIFT < SECTION_SIZE_BITS
#define ARM64_MEMSTART_ALIGN (1UL << SECTION_SIZE_BITS)
#else
#define ARM64_MEMSTART_ALIGN (1UL << ARM64_MEMSTART_SHIFT)
diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h
index 6d9915d066fa..87b90dc27a43 100644
--- a/arch/arm64/include/asm/memory.h
+++ b/arch/arm64/include/asm/memory.h
@@ -345,7 +345,7 @@ static inline void *phys_to_virt(phys_addr_t x)
*/
#define ARCH_PFN_OFFSET ((unsigned long)PHYS_PFN_OFFSET)
-#if !defined(CONFIG_SPARSEMEM_VMEMMAP) || defined(CONFIG_DEBUG_VIRTUAL)
+#if defined(CONFIG_DEBUG_VIRTUAL)
#define page_to_virt(x) ({ \
__typeof__(x) __page = x; \
void *__addr = __va(page_to_phys(__page)); \
@@ -365,7 +365,7 @@ static inline void *phys_to_virt(phys_addr_t x)
u64 __addr = VMEMMAP_START + (__idx * sizeof(struct page)); \
(struct page *)__addr; \
})
-#endif /* !CONFIG_SPARSEMEM_VMEMMAP || CONFIG_DEBUG_VIRTUAL */
+#endif /* CONFIG_DEBUG_VIRTUAL */
#define virt_addr_valid(addr) ({ \
__typeof__(addr) __addr = __tag_reset(addr); \
diff --git a/arch/arm64/include/asm/sparsemem.h b/arch/arm64/include/asm/sparsemem.h
index eb4a75d720ed..4b73463423c3 100644
--- a/arch/arm64/include/asm/sparsemem.h
+++ b/arch/arm64/include/asm/sparsemem.h
@@ -5,7 +5,6 @@
#ifndef __ASM_SPARSEMEM_H
#define __ASM_SPARSEMEM_H
-#ifdef CONFIG_SPARSEMEM
#define MAX_PHYSMEM_BITS CONFIG_ARM64_PA_BITS
/*
@@ -27,6 +26,4 @@
#define SECTION_SIZE_BITS 27
#endif /* CONFIG_ARM64_64K_PAGES */
-#endif /* CONFIG_SPARSEMEM*/
-
#endif
diff --git a/arch/arm64/kernel/alternative.c b/arch/arm64/kernel/alternative.c
index abc84636af07..c906d20c7b52 100644
--- a/arch/arm64/kernel/alternative.c
+++ b/arch/arm64/kernel/alternative.c
@@ -133,11 +133,10 @@ static void clean_dcache_range_nopatch(u64 start, u64 end)
} while (cur += d_size, cur < end);
}
-static void __nocfi __apply_alternatives(void *alt_region, bool is_module,
- unsigned long *feature_mask)
+static void __nocfi __apply_alternatives(struct alt_region *region, bool is_module,
+ unsigned long *feature_mask)
{
struct alt_instr *alt;
- struct alt_region *region = alt_region;
__le32 *origptr, *updptr;
alternative_cb_t alt_cb;
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index 30c82d38c189..efed2830d141 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -68,6 +68,7 @@
#include <linux/sort.h>
#include <linux/stop_machine.h>
#include <linux/types.h>
+#include <linux/minmax.h>
#include <linux/mm.h>
#include <linux/cpu.h>
#include <linux/kasan.h>
@@ -694,14 +695,14 @@ static s64 arm64_ftr_safe_value(const struct arm64_ftr_bits *ftrp, s64 new,
ret = ftrp->safe_val;
break;
case FTR_LOWER_SAFE:
- ret = new < cur ? new : cur;
+ ret = min(new, cur);
break;
case FTR_HIGHER_OR_ZERO_SAFE:
if (!cur || !new)
break;
fallthrough;
case FTR_HIGHER_SAFE:
- ret = new > cur ? new : cur;
+ ret = max(new, cur);
break;
default:
BUG();
diff --git a/arch/arm64/kernel/cpuidle.c b/arch/arm64/kernel/cpuidle.c
index b512b5503f6e..03991eeff643 100644
--- a/arch/arm64/kernel/cpuidle.c
+++ b/arch/arm64/kernel/cpuidle.c
@@ -29,7 +29,7 @@ int arm_cpuidle_init(unsigned int cpu)
/**
* arm_cpuidle_suspend() - function to enter a low-power idle state
- * @arg: argument to pass to CPU suspend operations
+ * @index: argument to pass to CPU suspend operations
*
* Return: 0 on success, -EOPNOTSUPP if CPU suspend hook not initialized, CPU
* operations back-end error code otherwise.
diff --git a/arch/arm64/kernel/entry-common.c b/arch/arm64/kernel/entry-common.c
index a1ec351c36bd..340d04e13617 100644
--- a/arch/arm64/kernel/entry-common.c
+++ b/arch/arm64/kernel/entry-common.c
@@ -230,14 +230,6 @@ static void noinstr el1_dbg(struct pt_regs *regs, unsigned long esr)
{
unsigned long far = read_sysreg(far_el1);
- /*
- * The CPU masked interrupts, and we are leaving them masked during
- * do_debug_exception(). Update PMR as if we had called
- * local_daif_mask().
- */
- if (system_uses_irq_prio_masking())
- gic_write_pmr(GIC_PRIO_IRQON | GIC_PRIO_PSR_I_SET);
-
arm64_enter_el1_dbg(regs);
if (!cortex_a76_erratum_1463225_debug_handler(regs))
do_debug_exception(far, esr, regs);
@@ -404,9 +396,6 @@ static void noinstr el0_dbg(struct pt_regs *regs, unsigned long esr)
/* Only watchpoints write FAR_EL1, otherwise its UNKNOWN */
unsigned long far = read_sysreg(far_el1);
- if (system_uses_irq_prio_masking())
- gic_write_pmr(GIC_PRIO_IRQON | GIC_PRIO_PSR_I_SET);
-
enter_from_user_mode();
do_debug_exception(far, esr, regs);
local_daif_restore(DAIF_PROCCTX_NOIRQ);
@@ -414,9 +403,6 @@ static void noinstr el0_dbg(struct pt_regs *regs, unsigned long esr)
static void noinstr el0_svc(struct pt_regs *regs)
{
- if (system_uses_irq_prio_masking())
- gic_write_pmr(GIC_PRIO_IRQON | GIC_PRIO_PSR_I_SET);
-
enter_from_user_mode();
cortex_a76_erratum_1463225_svc_handler();
do_el0_svc(regs);
@@ -492,9 +478,6 @@ static void noinstr el0_cp15(struct pt_regs *regs, unsigned long esr)
static void noinstr el0_svc_compat(struct pt_regs *regs)
{
- if (system_uses_irq_prio_masking())
- gic_write_pmr(GIC_PRIO_IRQON | GIC_PRIO_PSR_I_SET);
-
enter_from_user_mode();
cortex_a76_erratum_1463225_svc_handler();
do_el0_svc_compat(regs);
diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S
index 4ac5455c0ead..3513984a88bd 100644
--- a/arch/arm64/kernel/entry.S
+++ b/arch/arm64/kernel/entry.S
@@ -285,16 +285,16 @@ alternative_else_nop_endif
stp lr, x21, [sp, #S_LR]
/*
- * For exceptions from EL0, terminate the callchain here.
+ * For exceptions from EL0, create a terminal frame record.
* For exceptions from EL1, create a synthetic frame record so the
* interrupted code shows up in the backtrace.
*/
.if \el == 0
- mov x29, xzr
+ stp xzr, xzr, [sp, #S_STACKFRAME]
.else
stp x29, x22, [sp, #S_STACKFRAME]
- add x29, sp, #S_STACKFRAME
.endif
+ add x29, sp, #S_STACKFRAME
#ifdef CONFIG_ARM64_SW_TTBR0_PAN
alternative_if_not ARM64_HAS_PAN
@@ -314,6 +314,8 @@ alternative_else_nop_endif
alternative_if ARM64_HAS_IRQ_PRIO_MASKING
mrs_s x20, SYS_ICC_PMR_EL1
str x20, [sp, #S_PMR_SAVE]
+ mov x20, #GIC_PRIO_IRQON | GIC_PRIO_PSR_I_SET
+ msr_s SYS_ICC_PMR_EL1, x20
alternative_else_nop_endif
/* Re-enable tag checking (TCO set on exception entry) */
@@ -550,17 +552,7 @@ tsk .req x28 // current thread_info
#endif
.endm
- .macro gic_prio_irq_setup, pmr:req, tmp:req
-#ifdef CONFIG_ARM64_PSEUDO_NMI
- alternative_if ARM64_HAS_IRQ_PRIO_MASKING
- orr \tmp, \pmr, #GIC_PRIO_PSR_I_SET
- msr_s SYS_ICC_PMR_EL1, \tmp
- alternative_else_nop_endif
-#endif
- .endm
-
.macro el1_interrupt_handler, handler:req
- gic_prio_irq_setup pmr=x20, tmp=x1
enable_da
mov x0, sp
@@ -590,7 +582,6 @@ alternative_else_nop_endif
.endm
.macro el0_interrupt_handler, handler:req
- gic_prio_irq_setup pmr=x20, tmp=x0
user_exit_irqoff
enable_da
@@ -788,7 +779,6 @@ SYM_CODE_END(el0_fiq)
SYM_CODE_START_LOCAL(el1_error)
kernel_entry 1
mrs x1, esr_el1
- gic_prio_kentry_setup tmp=x2
enable_dbg
mov x0, sp
bl do_serror
@@ -799,7 +789,6 @@ SYM_CODE_START_LOCAL(el0_error)
kernel_entry 0
el0_error_naked:
mrs x25, esr_el1
- gic_prio_kentry_setup tmp=x2
user_exit_irqoff
enable_dbg
mov x0, sp
diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
index cbf52109583b..b4bb67f17a2c 100644
--- a/arch/arm64/kernel/process.c
+++ b/arch/arm64/kernel/process.c
@@ -294,13 +294,10 @@ void __show_regs(struct pt_regs *regs)
i = top_reg;
while (i >= 0) {
- printk("x%-2d: %016llx ", i, regs->regs[i]);
- i--;
+ printk("x%-2d: %016llx", i, regs->regs[i]);
- if (i % 2 == 0) {
- pr_cont("x%-2d: %016llx ", i, regs->regs[i]);
- i--;
- }
+ while (i-- % 3)
+ pr_cont(" x%-2d: %016llx", i, regs->regs[i]);
pr_cont("\n");
}
diff --git a/arch/arm64/kernel/stacktrace.c b/arch/arm64/kernel/stacktrace.c
index 84b676bcf867..de07147a7926 100644
--- a/arch/arm64/kernel/stacktrace.c
+++ b/arch/arm64/kernel/stacktrace.c
@@ -68,10 +68,6 @@ int notrace unwind_frame(struct task_struct *tsk, struct stackframe *frame)
unsigned long fp = frame->fp;
struct stack_info info;
- /* Terminal record; nothing to unwind */
- if (!fp)
- return -ENOENT;
-
if (fp & 0xf)
return -EINVAL;
@@ -132,6 +128,12 @@ int notrace unwind_frame(struct task_struct *tsk, struct stackframe *frame)
frame->pc = ptrauth_strip_insn_pac(frame->pc);
+ /*
+ * This is a terminal record, so we have finished unwinding.
+ */
+ if (!frame->fp && !frame->pc)
+ return -ENOENT;
+
return 0;
}
NOKPROBE_SYMBOL(unwind_frame);
diff --git a/arch/arm64/kernel/vdso/vdso.lds.S b/arch/arm64/kernel/vdso/vdso.lds.S
index 61dbb4c838ef..a5e61e09ea92 100644
--- a/arch/arm64/kernel/vdso/vdso.lds.S
+++ b/arch/arm64/kernel/vdso/vdso.lds.S
@@ -31,6 +31,13 @@ SECTIONS
.gnu.version_d : { *(.gnu.version_d) }
.gnu.version_r : { *(.gnu.version_r) }
+ /*
+ * Discard .note.gnu.property sections which are unused and have
+ * different alignment requirement from vDSO note sections.
+ */
+ /DISCARD/ : {
+ *(.note.GNU-stack .note.gnu.property)
+ }
.note : { *(.note.*) } :text :note
. = ALIGN(16);
@@ -48,7 +55,6 @@ SECTIONS
PROVIDE(end = .);
/DISCARD/ : {
- *(.note.GNU-stack)
*(.data .data.* .gnu.linkonce.d.* .sdata*)
*(.bss .sbss .dynbss .dynsbss)
*(.eh_frame .eh_frame_hdr)
diff --git a/arch/arm64/kernel/vdso32/Makefile b/arch/arm64/kernel/vdso32/Makefile
index 789ad420f16b..3dba0c4f8f42 100644
--- a/arch/arm64/kernel/vdso32/Makefile
+++ b/arch/arm64/kernel/vdso32/Makefile
@@ -10,15 +10,7 @@ include $(srctree)/lib/vdso/Makefile
# Same as cc-*option, but using CC_COMPAT instead of CC
ifeq ($(CONFIG_CC_IS_CLANG), y)
-COMPAT_GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE_COMPAT)elfedit))
-COMPAT_GCC_TOOLCHAIN := $(realpath $(COMPAT_GCC_TOOLCHAIN_DIR)/..)
-
CC_COMPAT_CLANG_FLAGS := --target=$(notdir $(CROSS_COMPILE_COMPAT:%-=%))
-CC_COMPAT_CLANG_FLAGS += --prefix=$(COMPAT_GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE_COMPAT))
-CC_COMPAT_CLANG_FLAGS += -no-integrated-as -Qunused-arguments
-ifneq ($(COMPAT_GCC_TOOLCHAIN),)
-CC_COMPAT_CLANG_FLAGS += --gcc-toolchain=$(COMPAT_GCC_TOOLCHAIN)
-endif
CC_COMPAT ?= $(CC)
CC_COMPAT += $(CC_COMPAT_CLANG_FLAGS)
diff --git a/arch/arm64/mm/hugetlbpage.c b/arch/arm64/mm/hugetlbpage.c
index 55ecf6de9ff7..58987a98e179 100644
--- a/arch/arm64/mm/hugetlbpage.c
+++ b/arch/arm64/mm/hugetlbpage.c
@@ -252,7 +252,7 @@ void set_huge_swap_pte_at(struct mm_struct *mm, unsigned long addr,
set_pte(ptep, pte);
}
-pte_t *huge_pte_alloc(struct mm_struct *mm,
+pte_t *huge_pte_alloc(struct mm_struct *mm, struct vm_area_struct *vma,
unsigned long addr, unsigned long sz)
{
pgd_t *pgdp;
@@ -284,9 +284,8 @@ pte_t *huge_pte_alloc(struct mm_struct *mm,
*/
ptep = pte_alloc_map(mm, pmdp, addr);
} else if (sz == PMD_SIZE) {
- if (IS_ENABLED(CONFIG_ARCH_WANT_HUGE_PMD_SHARE) &&
- pud_none(READ_ONCE(*pudp)))
- ptep = huge_pmd_share(mm, addr, pudp);
+ if (want_pmd_share(vma, addr) && pud_none(READ_ONCE(*pudp)))
+ ptep = huge_pmd_share(mm, vma, addr, pudp);
else
ptep = (pte_t *)pmd_alloc(mm, pudp, addr);
} else if (sz == (CONT_PMD_SIZE)) {
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index 0696a459ea95..16a2b2b1c54d 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -221,6 +221,7 @@ static void __init zone_sizes_init(unsigned long min, unsigned long max)
int pfn_valid(unsigned long pfn)
{
phys_addr_t addr = PFN_PHYS(pfn);
+ struct mem_section *ms;
/*
* Ensure the upper PAGE_SHIFT bits are clear in the
@@ -231,10 +232,6 @@ int pfn_valid(unsigned long pfn)
if (PHYS_PFN(addr) != pfn)
return 0;
-#ifdef CONFIG_SPARSEMEM
-{
- struct mem_section *ms;
-
if (pfn_to_section_nr(pfn) >= NR_MEM_SECTIONS)
return 0;
@@ -253,8 +250,7 @@ int pfn_valid(unsigned long pfn)
*/
if (!early_section(ms))
return pfn_section_valid(ms, pfn);
-}
-#endif
+
return memblock_is_map_memory(addr);
}
EXPORT_SYMBOL(pfn_valid);
diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c
index 70fa3cdbe841..6dd9369e3ea0 100644
--- a/arch/arm64/mm/mmu.c
+++ b/arch/arm64/mm/mmu.c
@@ -1113,7 +1113,6 @@ static void free_empty_tables(unsigned long addr, unsigned long end,
}
#endif
-#ifdef CONFIG_SPARSEMEM_VMEMMAP
#if !ARM64_SWAPPER_USES_SECTION_MAPS
int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node,
struct vmem_altmap *altmap)
@@ -1177,7 +1176,6 @@ void vmemmap_free(unsigned long start, unsigned long end,
free_empty_tables(start, end, VMEMMAP_START, VMEMMAP_END);
#endif
}
-#endif /* CONFIG_SPARSEMEM_VMEMMAP */
static inline pud_t *fixmap_pud(unsigned long addr)
{
diff --git a/arch/arm64/mm/ptdump.c b/arch/arm64/mm/ptdump.c
index a50e92ea1878..a1937dfff31c 100644
--- a/arch/arm64/mm/ptdump.c
+++ b/arch/arm64/mm/ptdump.c
@@ -51,10 +51,8 @@ static struct addr_marker address_markers[] = {
{ FIXADDR_TOP, "Fixmap end" },
{ PCI_IO_START, "PCI I/O start" },
{ PCI_IO_END, "PCI I/O end" },
-#ifdef CONFIG_SPARSEMEM_VMEMMAP
{ VMEMMAP_START, "vmemmap start" },
{ VMEMMAP_START + VMEMMAP_SIZE, "vmemmap end" },
-#endif
{ -1, NULL },
};
diff --git a/arch/csky/include/asm/Kbuild b/arch/csky/include/asm/Kbuild
index cc24bb8e539f..904a18a818be 100644
--- a/arch/csky/include/asm/Kbuild
+++ b/arch/csky/include/asm/Kbuild
@@ -1,5 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
generic-y += asm-offsets.h
+generic-y += extable.h
generic-y += gpio.h
generic-y += kvm_para.h
generic-y += qrwlock.h
diff --git a/arch/csky/include/asm/asid.h b/arch/csky/include/asm/asid.h
index ac08b0ffbe1f..6ff205a97a14 100644
--- a/arch/csky/include/asm/asid.h
+++ b/arch/csky/include/asm/asid.h
@@ -37,7 +37,7 @@ void asid_new_context(struct asid_info *info, atomic64_t *pasid,
* Check the ASID is still valid for the context. If not generate a new ASID.
*
* @pasid: Pointer to the current ASID batch
- * @cpu: current CPU ID. Must have been acquired throught get_cpu()
+ * @cpu: current CPU ID. Must have been acquired through get_cpu()
*/
static inline void asid_check_context(struct asid_info *info,
atomic64_t *pasid, unsigned int cpu,
diff --git a/arch/csky/include/asm/barrier.h b/arch/csky/include/asm/barrier.h
index 84fc600c8b45..f4045dd53e17 100644
--- a/arch/csky/include/asm/barrier.h
+++ b/arch/csky/include/asm/barrier.h
@@ -64,7 +64,7 @@
/*
* sync: completion barrier, all sync.xx instructions
- * guarantee the last response recieved by bus transaction
+ * guarantee the last response received by bus transaction
* made by ld/st instructions before sync.s
* sync.s: inherit from sync, but also shareable to other cores
* sync.i: inherit from sync, but also flush cpu pipeline
diff --git a/arch/csky/include/asm/segment.h b/arch/csky/include/asm/segment.h
index 589e8321dc14..5bc1cc62b87f 100644
--- a/arch/csky/include/asm/segment.h
+++ b/arch/csky/include/asm/segment.h
@@ -7,11 +7,4 @@ typedef struct {
unsigned long seg;
} mm_segment_t;
-#define KERNEL_DS ((mm_segment_t) { 0xFFFFFFFF })
-
-#define USER_DS ((mm_segment_t) { PAGE_OFFSET })
-#define get_fs() (current_thread_info()->addr_limit)
-#define set_fs(x) (current_thread_info()->addr_limit = (x))
-#define uaccess_kernel() (get_fs().seg == KERNEL_DS.seg)
-
#endif /* __ASM_CSKY_SEGMENT_H */
diff --git a/arch/csky/include/asm/uaccess.h b/arch/csky/include/asm/uaccess.h
index 3dec272e1fa3..ac83823fc437 100644
--- a/arch/csky/include/asm/uaccess.h
+++ b/arch/csky/include/asm/uaccess.h
@@ -3,122 +3,26 @@
#ifndef __ASM_CSKY_UACCESS_H
#define __ASM_CSKY_UACCESS_H
-/*
- * User space memory access functions
- */
-#include <linux/compiler.h>
-#include <linux/errno.h>
-#include <linux/types.h>
-#include <linux/sched.h>
-#include <linux/string.h>
-#include <linux/version.h>
-#include <asm/segment.h>
+#define user_addr_max() \
+ (uaccess_kernel() ? KERNEL_DS.seg : get_fs().seg)
-static inline int access_ok(const void *addr, unsigned long size)
+static inline int __access_ok(unsigned long addr, unsigned long size)
{
unsigned long limit = current_thread_info()->addr_limit.seg;
- return (((unsigned long)addr < limit) &&
- ((unsigned long)(addr + size) < limit));
+ return ((addr < limit) && ((addr + size) < limit));
}
-
-#define __addr_ok(addr) (access_ok(addr, 0))
-
-extern int __put_user_bad(void);
+#define __access_ok __access_ok
/*
- * Tell gcc we read from memory instead of writing: this is because
- * we do not write to any memory gcc knows about, so there are no
- * aliasing issues.
+ * __put_user_fn
*/
+extern int __put_user_bad(void);
-/*
- * These are the main single-value transfer routines. They automatically
- * use the right size if we just have the right pointer type.
- *
- * This gets kind of ugly. We want to return _two_ values in "get_user()"
- * and yet we don't want to do any pointers, because that is too much
- * of a performance impact. Thus we have a few rather ugly macros here,
- * and hide all the ugliness from the user.
- *
- * The "__xxx" versions of the user access functions are versions that
- * do not verify the address space, that must have been done previously
- * with a separate "access_ok()" call (this is used when we do multiple
- * accesses to the same area of user memory).
- *
- * As we use the same address space for kernel and user data on
- * Ckcore, we can just do these as direct assignments. (Of course, the
- * exception handling means that it's no longer "just"...)
- */
-
-#define put_user(x, ptr) \
- __put_user_check((x), (ptr), sizeof(*(ptr)))
-
-#define __put_user(x, ptr) \
- __put_user_nocheck((x), (ptr), sizeof(*(ptr)))
-
-#define __ptr(x) ((unsigned long *)(x))
-
-#define get_user(x, ptr) \
- __get_user_check((x), (ptr), sizeof(*(ptr)))
-
-#define __get_user(x, ptr) \
- __get_user_nocheck((x), (ptr), sizeof(*(ptr)))
-
-#define __put_user_nocheck(x, ptr, size) \
-({ \
- long __pu_err = 0; \
- typeof(*(ptr)) *__pu_addr = (ptr); \
- typeof(*(ptr)) __pu_val = (typeof(*(ptr)))(x); \
- if (__pu_addr) \
- __put_user_size(__pu_val, (__pu_addr), (size), \
- __pu_err); \
- __pu_err; \
-})
-
-#define __put_user_check(x, ptr, size) \
-({ \
- long __pu_err = -EFAULT; \
- typeof(*(ptr)) *__pu_addr = (ptr); \
- typeof(*(ptr)) __pu_val = (typeof(*(ptr)))(x); \
- if (access_ok(__pu_addr, size) && __pu_addr) \
- __put_user_size(__pu_val, __pu_addr, (size), __pu_err); \
- __pu_err; \
-})
-
-#define __put_user_size(x, ptr, size, retval) \
-do { \
- retval = 0; \
- switch (size) { \
- case 1: \
- __put_user_asm_b(x, ptr, retval); \
- break; \
- case 2: \
- __put_user_asm_h(x, ptr, retval); \
- break; \
- case 4: \
- __put_user_asm_w(x, ptr, retval); \
- break; \
- case 8: \
- __put_user_asm_64(x, ptr, retval); \
- break; \
- default: \
- __put_user_bad(); \
- } \
-} while (0)
-
-/*
- * We don't tell gcc that we are accessing memory, but this is OK
- * because we do not write to any memory gcc knows about, so there
- * are no aliasing issues.
- *
- * Note that PC at a fault is the address *after* the faulting
- * instruction.
- */
#define __put_user_asm_b(x, ptr, err) \
do { \
int errcode; \
- asm volatile( \
+ __asm__ __volatile__( \
"1: stb %1, (%2,0) \n" \
" br 3f \n" \
"2: mov %0, %3 \n" \
@@ -136,7 +40,7 @@ do { \
#define __put_user_asm_h(x, ptr, err) \
do { \
int errcode; \
- asm volatile( \
+ __asm__ __volatile__( \
"1: sth %1, (%2,0) \n" \
" br 3f \n" \
"2: mov %0, %3 \n" \
@@ -154,7 +58,7 @@ do { \
#define __put_user_asm_w(x, ptr, err) \
do { \
int errcode; \
- asm volatile( \
+ __asm__ __volatile__( \
"1: stw %1, (%2,0) \n" \
" br 3f \n" \
"2: mov %0, %3 \n" \
@@ -169,241 +73,149 @@ do { \
: "memory"); \
} while (0)
-#define __put_user_asm_64(x, ptr, err) \
-do { \
- int tmp; \
- int errcode; \
- typeof(*(ptr))src = (typeof(*(ptr)))x; \
- typeof(*(ptr))*psrc = &src; \
- \
- asm volatile( \
- " ldw %3, (%1, 0) \n" \
- "1: stw %3, (%2, 0) \n" \
- " ldw %3, (%1, 4) \n" \
- "2: stw %3, (%2, 4) \n" \
- " br 4f \n" \
- "3: mov %0, %4 \n" \
- " br 4f \n" \
- ".section __ex_table, \"a\" \n" \
- ".align 2 \n" \
- ".long 1b, 3b \n" \
- ".long 2b, 3b \n" \
- ".previous \n" \
- "4: \n" \
- : "=r"(err), "=r"(psrc), "=r"(ptr), \
- "=r"(tmp), "=r"(errcode) \
- : "0"(err), "1"(psrc), "2"(ptr), "3"(0), "4"(-EFAULT) \
- : "memory"); \
-} while (0)
-
-#define __get_user_nocheck(x, ptr, size) \
-({ \
- long __gu_err; \
- __get_user_size(x, (ptr), (size), __gu_err); \
- __gu_err; \
-})
-
-#define __get_user_check(x, ptr, size) \
-({ \
- int __gu_err = -EFAULT; \
- const __typeof__(*(ptr)) __user *__gu_ptr = (ptr); \
- if (access_ok(__gu_ptr, size) && __gu_ptr) \
- __get_user_size(x, __gu_ptr, size, __gu_err); \
- __gu_err; \
-})
-
-#define __get_user_size(x, ptr, size, retval) \
-do { \
- switch (size) { \
- case 1: \
- __get_user_asm_common((x), ptr, "ldb", retval); \
- break; \
- case 2: \
- __get_user_asm_common((x), ptr, "ldh", retval); \
- break; \
- case 4: \
- __get_user_asm_common((x), ptr, "ldw", retval); \
- break; \
- default: \
- x = 0; \
- (retval) = __get_user_bad(); \
- } \
+#define __put_user_asm_64(x, ptr, err) \
+do { \
+ int tmp; \
+ int errcode; \
+ \
+ __asm__ __volatile__( \
+ " ldw %3, (%1, 0) \n" \
+ "1: stw %3, (%2, 0) \n" \
+ " ldw %3, (%1, 4) \n" \
+ "2: stw %3, (%2, 4) \n" \
+ " br 4f \n" \
+ "3: mov %0, %4 \n" \
+ " br 4f \n" \
+ ".section __ex_table, \"a\" \n" \
+ ".align 2 \n" \
+ ".long 1b, 3b \n" \
+ ".long 2b, 3b \n" \
+ ".previous \n" \
+ "4: \n" \
+ : "=r"(err), "=r"(x), "=r"(ptr), \
+ "=r"(tmp), "=r"(errcode) \
+ : "0"(err), "1"(x), "2"(ptr), "3"(0), \
+ "4"(-EFAULT) \
+ : "memory"); \
} while (0)
-#define __get_user_asm_common(x, ptr, ins, err) \
-do { \
- int errcode; \
- asm volatile( \
- "1: " ins " %1, (%4,0) \n" \
- " br 3f \n" \
- /* Fix up codes */ \
- "2: mov %0, %2 \n" \
- " movi %1, 0 \n" \
- " br 3f \n" \
- ".section __ex_table,\"a\" \n" \
- ".align 2 \n" \
- ".long 1b, 2b \n" \
- ".previous \n" \
- "3: \n" \
- : "=r"(err), "=r"(x), "=r"(errcode) \
- : "0"(0), "r"(ptr), "2"(-EFAULT) \
- : "memory"); \
-} while (0)
+static inline int __put_user_fn(size_t size, void __user *ptr, void *x)
+{
+ int retval = 0;
+ u32 tmp;
+
+ switch (size) {
+ case 1:
+ tmp = *(u8 *)x;
+ __put_user_asm_b(tmp, ptr, retval);
+ break;
+ case 2:
+ tmp = *(u16 *)x;
+ __put_user_asm_h(tmp, ptr, retval);
+ break;
+ case 4:
+ tmp = *(u32 *)x;
+ __put_user_asm_w(tmp, ptr, retval);
+ break;
+ case 8:
+ __put_user_asm_64(x, (u64 *)ptr, retval);
+ break;
+ }
+
+ return retval;
+}
+#define __put_user_fn __put_user_fn
+/*
+ * __get_user_fn
+ */
extern int __get_user_bad(void);
-#define ___copy_to_user(to, from, n) \
+#define __get_user_asm_common(x, ptr, ins, err) \
do { \
- int w0, w1, w2, w3; \
- asm volatile( \
- "0: cmpnei %1, 0 \n" \
- " bf 8f \n" \
- " mov %3, %1 \n" \
- " or %3, %2 \n" \
- " andi %3, 3 \n" \
- " cmpnei %3, 0 \n" \
- " bf 1f \n" \
- " br 5f \n" \
- "1: cmplti %0, 16 \n" /* 4W */ \
- " bt 3f \n" \
- " ldw %3, (%2, 0) \n" \
- " ldw %4, (%2, 4) \n" \
- " ldw %5, (%2, 8) \n" \
- " ldw %6, (%2, 12) \n" \
- "2: stw %3, (%1, 0) \n" \
- "9: stw %4, (%1, 4) \n" \
- "10: stw %5, (%1, 8) \n" \
- "11: stw %6, (%1, 12) \n" \
- " addi %2, 16 \n" \
- " addi %1, 16 \n" \
- " subi %0, 16 \n" \
- " br 1b \n" \
- "3: cmplti %0, 4 \n" /* 1W */ \
- " bt 5f \n" \
- " ldw %3, (%2, 0) \n" \
- "4: stw %3, (%1, 0) \n" \
- " addi %2, 4 \n" \
- " addi %1, 4 \n" \
- " subi %0, 4 \n" \
- " br 3b \n" \
- "5: cmpnei %0, 0 \n" /* 1B */ \
- " bf 13f \n" \
- " ldb %3, (%2, 0) \n" \
- "6: stb %3, (%1, 0) \n" \
- " addi %2, 1 \n" \
- " addi %1, 1 \n" \
- " subi %0, 1 \n" \
- " br 5b \n" \
- "7: subi %0, 4 \n" \
- "8: subi %0, 4 \n" \
- "12: subi %0, 4 \n" \
- " br 13f \n" \
- ".section __ex_table, \"a\" \n" \
- ".align 2 \n" \
- ".long 2b, 13f \n" \
- ".long 4b, 13f \n" \
- ".long 6b, 13f \n" \
- ".long 9b, 12b \n" \
- ".long 10b, 8b \n" \
- ".long 11b, 7b \n" \
- ".previous \n" \
- "13: \n" \
- : "=r"(n), "=r"(to), "=r"(from), "=r"(w0), \
- "=r"(w1), "=r"(w2), "=r"(w3) \
- : "0"(n), "1"(to), "2"(from) \
+ int errcode; \
+ __asm__ __volatile__( \
+ "1: " ins " %1, (%4, 0) \n" \
+ " br 3f \n" \
+ "2: mov %0, %2 \n" \
+ " movi %1, 0 \n" \
+ " br 3f \n" \
+ ".section __ex_table,\"a\" \n" \
+ ".align 2 \n" \
+ ".long 1b, 2b \n" \
+ ".previous \n" \
+ "3: \n" \
+ : "=r"(err), "=r"(x), "=r"(errcode) \
+ : "0"(0), "r"(ptr), "2"(-EFAULT) \
: "memory"); \
} while (0)
-#define ___copy_from_user(to, from, n) \
+#define __get_user_asm_64(x, ptr, err) \
do { \
int tmp; \
- int nsave; \
- asm volatile( \
- "0: cmpnei %1, 0 \n" \
- " bf 7f \n" \
- " mov %3, %1 \n" \
- " or %3, %2 \n" \
- " andi %3, 3 \n" \
- " cmpnei %3, 0 \n" \
- " bf 1f \n" \
- " br 5f \n" \
- "1: cmplti %0, 16 \n" \
- " bt 3f \n" \
- "2: ldw %3, (%2, 0) \n" \
- "10: ldw %4, (%2, 4) \n" \
- " stw %3, (%1, 0) \n" \
- " stw %4, (%1, 4) \n" \
- "11: ldw %3, (%2, 8) \n" \
- "12: ldw %4, (%2, 12) \n" \
- " stw %3, (%1, 8) \n" \
- " stw %4, (%1, 12) \n" \
- " addi %2, 16 \n" \
- " addi %1, 16 \n" \
- " subi %0, 16 \n" \
- " br 1b \n" \
- "3: cmplti %0, 4 \n" \
- " bt 5f \n" \
- "4: ldw %3, (%2, 0) \n" \
- " stw %3, (%1, 0) \n" \
- " addi %2, 4 \n" \
- " addi %1, 4 \n" \
- " subi %0, 4 \n" \
- " br 3b \n" \
- "5: cmpnei %0, 0 \n" \
- " bf 7f \n" \
- "6: ldb %3, (%2, 0) \n" \
- " stb %3, (%1, 0) \n" \
- " addi %2, 1 \n" \
- " addi %1, 1 \n" \
- " subi %0, 1 \n" \
- " br 5b \n" \
- "8: stw %3, (%1, 0) \n" \
- " subi %0, 4 \n" \
- " bf 7f \n" \
- "9: subi %0, 8 \n" \
- " bf 7f \n" \
- "13: stw %3, (%1, 8) \n" \
- " subi %0, 12 \n" \
- " bf 7f \n" \
- ".section __ex_table, \"a\" \n" \
- ".align 2 \n" \
- ".long 2b, 7f \n" \
- ".long 4b, 7f \n" \
- ".long 6b, 7f \n" \
- ".long 10b, 8b \n" \
- ".long 11b, 9b \n" \
- ".long 12b,13b \n" \
- ".previous \n" \
- "7: \n" \
- : "=r"(n), "=r"(to), "=r"(from), "=r"(nsave), \
- "=r"(tmp) \
- : "0"(n), "1"(to), "2"(from) \
+ int errcode; \
+ \
+ __asm__ __volatile__( \
+ "1: ldw %3, (%2, 0) \n" \
+ " stw %3, (%1, 0) \n" \
+ "2: ldw %3, (%2, 4) \n" \
+ " stw %3, (%1, 4) \n" \
+ " br 4f \n" \
+ "3: mov %0, %4 \n" \
+ " br 4f \n" \
+ ".section __ex_table, \"a\" \n" \
+ ".align 2 \n" \
+ ".long 1b, 3b \n" \
+ ".long 2b, 3b \n" \
+ ".previous \n" \
+ "4: \n" \
+ : "=r"(err), "=r"(x), "=r"(ptr), \
+ "=r"(tmp), "=r"(errcode) \
+ : "0"(err), "1"(x), "2"(ptr), "3"(0), \
+ "4"(-EFAULT) \
: "memory"); \
} while (0)
+static inline int __get_user_fn(size_t size, const void __user *ptr, void *x)
+{
+ int retval;
+ u32 tmp;
+
+ switch (size) {
+ case 1:
+ __get_user_asm_common(tmp, ptr, "ldb", retval);
+ *(u8 *)x = (u8)tmp;
+ break;
+ case 2:
+ __get_user_asm_common(tmp, ptr, "ldh", retval);
+ *(u16 *)x = (u16)tmp;
+ break;
+ case 4:
+ __get_user_asm_common(tmp, ptr, "ldw", retval);
+ *(u32 *)x = (u32)tmp;
+ break;
+ case 8:
+ __get_user_asm_64(x, ptr, retval);
+ break;
+ }
+
+ return retval;
+}
+#define __get_user_fn __get_user_fn
+
unsigned long raw_copy_from_user(void *to, const void *from, unsigned long n);
unsigned long raw_copy_to_user(void *to, const void *from, unsigned long n);
-unsigned long clear_user(void *to, unsigned long n);
unsigned long __clear_user(void __user *to, unsigned long n);
+#define __clear_user __clear_user
-long strncpy_from_user(char *dst, const char *src, long count);
long __strncpy_from_user(char *dst, const char *src, long count);
+#define __strncpy_from_user __strncpy_from_user
-/*
- * Return the size of a string (including the ending 0)
- *
- * Return 0 on exception, a value greater than N if too long
- */
-long strnlen_user(const char *src, long n);
-
-#define strlen_user(str) strnlen_user(str, 32767)
-
-struct exception_table_entry {
- unsigned long insn;
- unsigned long nextinsn;
-};
+long __strnlen_user(const char *s, long n);
+#define __strnlen_user __strnlen_user
-extern int fixup_exception(struct pt_regs *regs);
+#include <asm/segment.h>
+#include <asm-generic/uaccess.h>
#endif /* __ASM_CSKY_UACCESS_H */
diff --git a/arch/csky/include/asm/vdso.h b/arch/csky/include/asm/vdso.h
index eb5142f9c564..bdce581b5fcb 100644
--- a/arch/csky/include/asm/vdso.h
+++ b/arch/csky/include/asm/vdso.h
@@ -16,7 +16,7 @@ struct vdso_data {
* offset of 0, but since the linker must support setting weak undefined
* symbols to the absolute address 0 it also happens to support other low
* addresses even when the code model suggests those low addresses would not
- * otherwise be availiable.
+ * otherwise be available.
*/
#define VDSO_SYMBOL(base, name) \
({ \
diff --git a/arch/csky/kernel/entry.S b/arch/csky/kernel/entry.S
index c1bd7a6b4ab6..00e3c8ebf9b8 100644
--- a/arch/csky/kernel/entry.S
+++ b/arch/csky/kernel/entry.S
@@ -9,7 +9,6 @@
#include <asm/unistd.h>
#include <asm/asm-offsets.h>
#include <linux/threads.h>
-#include <asm/setup.h>
#include <asm/page.h>
#include <asm/thread_info.h>
diff --git a/arch/csky/lib/usercopy.c b/arch/csky/lib/usercopy.c
index 3c9bd645e643..c5d394a0ae78 100644
--- a/arch/csky/lib/usercopy.c
+++ b/arch/csky/lib/usercopy.c
@@ -7,7 +7,70 @@
unsigned long raw_copy_from_user(void *to, const void *from,
unsigned long n)
{
- ___copy_from_user(to, from, n);
+ int tmp, nsave;
+
+ __asm__ __volatile__(
+ "0: cmpnei %1, 0 \n"
+ " bf 7f \n"
+ " mov %3, %1 \n"
+ " or %3, %2 \n"
+ " andi %3, 3 \n"
+ " cmpnei %3, 0 \n"
+ " bf 1f \n"
+ " br 5f \n"
+ "1: cmplti %0, 16 \n"
+ " bt 3f \n"
+ "2: ldw %3, (%2, 0) \n"
+ "10: ldw %4, (%2, 4) \n"
+ " stw %3, (%1, 0) \n"
+ " stw %4, (%1, 4) \n"
+ "11: ldw %3, (%2, 8) \n"
+ "12: ldw %4, (%2, 12) \n"
+ " stw %3, (%1, 8) \n"
+ " stw %4, (%1, 12) \n"
+ " addi %2, 16 \n"
+ " addi %1, 16 \n"
+ " subi %0, 16 \n"
+ " br 1b \n"
+ "3: cmplti %0, 4 \n"
+ " bt 5f \n"
+ "4: ldw %3, (%2, 0) \n"
+ " stw %3, (%1, 0) \n"
+ " addi %2, 4 \n"
+ " addi %1, 4 \n"
+ " subi %0, 4 \n"
+ " br 3b \n"
+ "5: cmpnei %0, 0 \n"
+ " bf 7f \n"
+ "6: ldb %3, (%2, 0) \n"
+ " stb %3, (%1, 0) \n"
+ " addi %2, 1 \n"
+ " addi %1, 1 \n"
+ " subi %0, 1 \n"
+ " br 5b \n"
+ "8: stw %3, (%1, 0) \n"
+ " subi %0, 4 \n"
+ " bf 7f \n"
+ "9: subi %0, 8 \n"
+ " bf 7f \n"
+ "13: stw %3, (%1, 8) \n"
+ " subi %0, 12 \n"
+ " bf 7f \n"
+ ".section __ex_table, \"a\" \n"
+ ".align 2 \n"
+ ".long 2b, 7f \n"
+ ".long 4b, 7f \n"
+ ".long 6b, 7f \n"
+ ".long 10b, 8b \n"
+ ".long 11b, 9b \n"
+ ".long 12b,13b \n"
+ ".previous \n"
+ "7: \n"
+ : "=r"(n), "=r"(to), "=r"(from), "=r"(nsave),
+ "=r"(tmp)
+ : "0"(n), "1"(to), "2"(from)
+ : "memory");
+
return n;
}
EXPORT_SYMBOL(raw_copy_from_user);
@@ -15,48 +78,70 @@ EXPORT_SYMBOL(raw_copy_from_user);
unsigned long raw_copy_to_user(void *to, const void *from,
unsigned long n)
{
- ___copy_to_user(to, from, n);
+ int w0, w1, w2, w3;
+
+ __asm__ __volatile__(
+ "0: cmpnei %1, 0 \n"
+ " bf 8f \n"
+ " mov %3, %1 \n"
+ " or %3, %2 \n"
+ " andi %3, 3 \n"
+ " cmpnei %3, 0 \n"
+ " bf 1f \n"
+ " br 5f \n"
+ "1: cmplti %0, 16 \n" /* 4W */
+ " bt 3f \n"
+ " ldw %3, (%2, 0) \n"
+ " ldw %4, (%2, 4) \n"
+ " ldw %5, (%2, 8) \n"
+ " ldw %6, (%2, 12) \n"
+ "2: stw %3, (%1, 0) \n"
+ "9: stw %4, (%1, 4) \n"
+ "10: stw %5, (%1, 8) \n"
+ "11: stw %6, (%1, 12) \n"
+ " addi %2, 16 \n"
+ " addi %1, 16 \n"
+ " subi %0, 16 \n"
+ " br 1b \n"
+ "3: cmplti %0, 4 \n" /* 1W */
+ " bt 5f \n"
+ " ldw %3, (%2, 0) \n"
+ "4: stw %3, (%1, 0) \n"
+ " addi %2, 4 \n"
+ " addi %1, 4 \n"
+ " subi %0, 4 \n"
+ " br 3b \n"
+ "5: cmpnei %0, 0 \n" /* 1B */
+ " bf 13f \n"
+ " ldb %3, (%2, 0) \n"
+ "6: stb %3, (%1, 0) \n"
+ " addi %2, 1 \n"
+ " addi %1, 1 \n"
+ " subi %0, 1 \n"
+ " br 5b \n"
+ "7: subi %0, 4 \n"
+ "8: subi %0, 4 \n"
+ "12: subi %0, 4 \n"
+ " br 13f \n"
+ ".section __ex_table, \"a\" \n"
+ ".align 2 \n"
+ ".long 2b, 13f \n"
+ ".long 4b, 13f \n"
+ ".long 6b, 13f \n"
+ ".long 9b, 12b \n"
+ ".long 10b, 8b \n"
+ ".long 11b, 7b \n"
+ ".previous \n"
+ "13: \n"
+ : "=r"(n), "=r"(to), "=r"(from), "=r"(w0),
+ "=r"(w1), "=r"(w2), "=r"(w3)
+ : "0"(n), "1"(to), "2"(from)
+ : "memory");
+
return n;
}
EXPORT_SYMBOL(raw_copy_to_user);
-
-/*
- * copy a null terminated string from userspace.
- */
-#define __do_strncpy_from_user(dst, src, count, res) \
-do { \
- int tmp; \
- long faultres; \
- asm volatile( \
- " cmpnei %3, 0 \n" \
- " bf 4f \n" \
- "1: cmpnei %1, 0 \n" \
- " bf 5f \n" \
- "2: ldb %4, (%3, 0) \n" \
- " stb %4, (%2, 0) \n" \
- " cmpnei %4, 0 \n" \
- " bf 3f \n" \
- " addi %3, 1 \n" \
- " addi %2, 1 \n" \
- " subi %1, 1 \n" \
- " br 1b \n" \
- "3: subu %0, %1 \n" \
- " br 5f \n" \
- "4: mov %0, %5 \n" \
- " br 5f \n" \
- ".section __ex_table, \"a\" \n" \
- ".align 2 \n" \
- ".long 2b, 4b \n" \
- ".previous \n" \
- "5: \n" \
- : "=r"(res), "=r"(count), "=r"(dst), \
- "=r"(src), "=r"(tmp), "=r"(faultres) \
- : "5"(-EFAULT), "0"(count), "1"(count), \
- "2"(dst), "3"(src) \
- : "memory", "cc"); \
-} while (0)
-
/*
* __strncpy_from_user: - Copy a NUL terminated string from userspace,
* with less checking.
@@ -80,43 +165,43 @@ do { \
*/
long __strncpy_from_user(char *dst, const char *src, long count)
{
- long res;
+ long res, faultres;
+ int tmp;
- __do_strncpy_from_user(dst, src, count, res);
- return res;
-}
-EXPORT_SYMBOL(__strncpy_from_user);
-
-/*
- * strncpy_from_user: - Copy a NUL terminated string from userspace.
- * @dst: Destination address, in kernel space. This buffer must be at
- * least @count bytes long.
- * @src: Source address, in user space.
- * @count: Maximum number of bytes to copy, including the trailing NUL.
- *
- * Copies a NUL-terminated string from userspace to kernel space.
- *
- * On success, returns the length of the string (not including the trailing
- * NUL).
- *
- * If access to userspace fails, returns -EFAULT (some data may have been
- * copied).
- *
- * If @count is smaller than the length of the string, copies @count bytes
- * and returns @count.
- */
-long strncpy_from_user(char *dst, const char *src, long count)
-{
- long res = -EFAULT;
+ __asm__ __volatile__(
+ " cmpnei %3, 0 \n"
+ " bf 4f \n"
+ "1: cmpnei %1, 0 \n"
+ " bf 5f \n"
+ "2: ldb %4, (%3, 0) \n"
+ " stb %4, (%2, 0) \n"
+ " cmpnei %4, 0 \n"
+ " bf 3f \n"
+ " addi %3, 1 \n"
+ " addi %2, 1 \n"
+ " subi %1, 1 \n"
+ " br 1b \n"
+ "3: subu %0, %1 \n"
+ " br 5f \n"
+ "4: mov %0, %5 \n"
+ " br 5f \n"
+ ".section __ex_table, \"a\" \n"
+ ".align 2 \n"
+ ".long 2b, 4b \n"
+ ".previous \n"
+ "5: \n"
+ : "=r"(res), "=r"(count), "=r"(dst),
+ "=r"(src), "=r"(tmp), "=r"(faultres)
+ : "5"(-EFAULT), "0"(count), "1"(count),
+ "2"(dst), "3"(src)
+ : "memory");
- if (access_ok(src, 1))
- __do_strncpy_from_user(dst, src, count, res);
return res;
}
-EXPORT_SYMBOL(strncpy_from_user);
+EXPORT_SYMBOL(__strncpy_from_user);
/*
- * strlen_user: - Get the size of a string in user space.
+ * strnlen_user: - Get the size of a string in user space.
* @str: The string to measure.
* @n: The maximum valid length
*
@@ -126,14 +211,11 @@ EXPORT_SYMBOL(strncpy_from_user);
* On exception, returns 0.
* If the string is too long, returns a value greater than @n.
*/
-long strnlen_user(const char *s, long n)
+long __strnlen_user(const char *s, long n)
{
unsigned long res, tmp;
- if (s == NULL)
- return 0;
-
- asm volatile(
+ __asm__ __volatile__(
" cmpnei %1, 0 \n"
" bf 3f \n"
"1: cmpnei %0, 0 \n"
@@ -156,87 +238,11 @@ long strnlen_user(const char *s, long n)
"5: \n"
: "=r"(n), "=r"(s), "=r"(res), "=r"(tmp)
: "0"(n), "1"(s), "2"(n)
- : "memory", "cc");
+ : "memory");
return res;
}
-EXPORT_SYMBOL(strnlen_user);
-
-#define __do_clear_user(addr, size) \
-do { \
- int __d0, zvalue, tmp; \
- \
- asm volatile( \
- "0: cmpnei %1, 0 \n" \
- " bf 7f \n" \
- " mov %3, %1 \n" \
- " andi %3, 3 \n" \
- " cmpnei %3, 0 \n" \
- " bf 1f \n" \
- " br 5f \n" \
- "1: cmplti %0, 32 \n" /* 4W */ \
- " bt 3f \n" \
- "8: stw %2, (%1, 0) \n" \
- "10: stw %2, (%1, 4) \n" \
- "11: stw %2, (%1, 8) \n" \
- "12: stw %2, (%1, 12) \n" \
- "13: stw %2, (%1, 16) \n" \
- "14: stw %2, (%1, 20) \n" \
- "15: stw %2, (%1, 24) \n" \
- "16: stw %2, (%1, 28) \n" \
- " addi %1, 32 \n" \
- " subi %0, 32 \n" \
- " br 1b \n" \
- "3: cmplti %0, 4 \n" /* 1W */ \
- " bt 5f \n" \
- "4: stw %2, (%1, 0) \n" \
- " addi %1, 4 \n" \
- " subi %0, 4 \n" \
- " br 3b \n" \
- "5: cmpnei %0, 0 \n" /* 1B */ \
- "9: bf 7f \n" \
- "6: stb %2, (%1, 0) \n" \
- " addi %1, 1 \n" \
- " subi %0, 1 \n" \
- " br 5b \n" \
- ".section __ex_table,\"a\" \n" \
- ".align 2 \n" \
- ".long 8b, 9b \n" \
- ".long 10b, 9b \n" \
- ".long 11b, 9b \n" \
- ".long 12b, 9b \n" \
- ".long 13b, 9b \n" \
- ".long 14b, 9b \n" \
- ".long 15b, 9b \n" \
- ".long 16b, 9b \n" \
- ".long 4b, 9b \n" \
- ".long 6b, 9b \n" \
- ".previous \n" \
- "7: \n" \
- : "=r"(size), "=r" (__d0), \
- "=r"(zvalue), "=r"(tmp) \
- : "0"(size), "1"(addr), "2"(0) \
- : "memory", "cc"); \
-} while (0)
-
-/*
- * clear_user: - Zero a block of memory in user space.
- * @to: Destination address, in user space.
- * @n: Number of bytes to zero.
- *
- * Zero a block of memory in user space.
- *
- * Returns number of bytes that could not be cleared.
- * On success, this will be zero.
- */
-unsigned long
-clear_user(void __user *to, unsigned long n)
-{
- if (access_ok(to, n))
- __do_clear_user(to, n);
- return n;
-}
-EXPORT_SYMBOL(clear_user);
+EXPORT_SYMBOL(__strnlen_user);
/*
* __clear_user: - Zero a block of memory in user space, with less checking.
@@ -252,7 +258,59 @@ EXPORT_SYMBOL(clear_user);
unsigned long
__clear_user(void __user *to, unsigned long n)
{
- __do_clear_user(to, n);
+ int data, value, tmp;
+
+ __asm__ __volatile__(
+ "0: cmpnei %1, 0 \n"
+ " bf 7f \n"
+ " mov %3, %1 \n"
+ " andi %3, 3 \n"
+ " cmpnei %3, 0 \n"
+ " bf 1f \n"
+ " br 5f \n"
+ "1: cmplti %0, 32 \n" /* 4W */
+ " bt 3f \n"
+ "8: stw %2, (%1, 0) \n"
+ "10: stw %2, (%1, 4) \n"
+ "11: stw %2, (%1, 8) \n"
+ "12: stw %2, (%1, 12) \n"
+ "13: stw %2, (%1, 16) \n"
+ "14: stw %2, (%1, 20) \n"
+ "15: stw %2, (%1, 24) \n"
+ "16: stw %2, (%1, 28) \n"
+ " addi %1, 32 \n"
+ " subi %0, 32 \n"
+ " br 1b \n"
+ "3: cmplti %0, 4 \n" /* 1W */
+ " bt 5f \n"
+ "4: stw %2, (%1, 0) \n"
+ " addi %1, 4 \n"
+ " subi %0, 4 \n"
+ " br 3b \n"
+ "5: cmpnei %0, 0 \n" /* 1B */
+ "9: bf 7f \n"
+ "6: stb %2, (%1, 0) \n"
+ " addi %1, 1 \n"
+ " subi %0, 1 \n"
+ " br 5b \n"
+ ".section __ex_table,\"a\" \n"
+ ".align 2 \n"
+ ".long 8b, 9b \n"
+ ".long 10b, 9b \n"
+ ".long 11b, 9b \n"
+ ".long 12b, 9b \n"
+ ".long 13b, 9b \n"
+ ".long 14b, 9b \n"
+ ".long 15b, 9b \n"
+ ".long 16b, 9b \n"
+ ".long 4b, 9b \n"
+ ".long 6b, 9b \n"
+ ".previous \n"
+ "7: \n"
+ : "=r"(n), "=r" (data), "=r"(value), "=r"(tmp)
+ : "0"(n), "1"(to), "2"(0)
+ : "memory");
+
return n;
}
EXPORT_SYMBOL(__clear_user);
diff --git a/arch/csky/mm/fault.c b/arch/csky/mm/fault.c
index 1482de56f4f7..466ad949818a 100644
--- a/arch/csky/mm/fault.c
+++ b/arch/csky/mm/fault.c
@@ -12,7 +12,7 @@ int fixup_exception(struct pt_regs *regs)
fixup = search_exception_tables(instruction_pointer(regs));
if (fixup) {
- regs->pc = fixup->nextinsn;
+ regs->pc = fixup->fixup;
return 1;
}
diff --git a/arch/csky/mm/syscache.c b/arch/csky/mm/syscache.c
index ffade2f9a4c8..4e51d63850c4 100644
--- a/arch/csky/mm/syscache.c
+++ b/arch/csky/mm/syscache.c
@@ -17,6 +17,7 @@ SYSCALL_DEFINE3(cacheflush,
flush_icache_mm_range(current->mm,
(unsigned long)addr,
(unsigned long)addr + bytes);
+ fallthrough;
case DCACHE:
dcache_wb_range((unsigned long)addr,
(unsigned long)addr + bytes);
diff --git a/arch/h8300/include/asm/bitops.h b/arch/h8300/include/asm/bitops.h
index 7aa16c732aa9..c867a80cab5b 100644
--- a/arch/h8300/include/asm/bitops.h
+++ b/arch/h8300/include/asm/bitops.h
@@ -9,6 +9,10 @@
#include <linux/compiler.h>
+#include <asm-generic/bitops/fls.h>
+#include <asm-generic/bitops/__fls.h>
+#include <asm-generic/bitops/fls64.h>
+
#ifdef __KERNEL__
#ifndef _LINUX_BITOPS_H
@@ -173,8 +177,4 @@ static inline unsigned long __ffs(unsigned long word)
#endif /* __KERNEL__ */
-#include <asm-generic/bitops/fls.h>
-#include <asm-generic/bitops/__fls.h>
-#include <asm-generic/bitops/fls64.h>
-
#endif /* _H8300_BITOPS_H */
diff --git a/arch/hexagon/Makefile b/arch/hexagon/Makefile
index c168c6980d05..74b644ea8a00 100644
--- a/arch/hexagon/Makefile
+++ b/arch/hexagon/Makefile
@@ -10,6 +10,9 @@ LDFLAGS_vmlinux += -G0
# Do not use single-byte enums; these will overflow.
KBUILD_CFLAGS += -fno-short-enums
+# We must use long-calls:
+KBUILD_CFLAGS += -mlong-calls
+
# Modules must use either long-calls, or use pic/plt.
# Use long-calls for now, it's easier. And faster.
# KBUILD_CFLAGS_MODULE += -fPIC
@@ -30,9 +33,6 @@ TIR_NAME := r19
KBUILD_CFLAGS += -ffixed-$(TIR_NAME) -DTHREADINFO_REG=$(TIR_NAME) -D__linux__
KBUILD_AFLAGS += -DTHREADINFO_REG=$(TIR_NAME)
-LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name 2>/dev/null)
-libs-y += $(LIBGCC)
-
head-y := arch/hexagon/kernel/head.o
core-y += arch/hexagon/kernel/ \
diff --git a/arch/hexagon/configs/comet_defconfig b/arch/hexagon/configs/comet_defconfig
index f19ae2ab0aaa..9b2b1cc0794a 100644
--- a/arch/hexagon/configs/comet_defconfig
+++ b/arch/hexagon/configs/comet_defconfig
@@ -34,7 +34,6 @@ CONFIG_NET_ETHERNET=y
# CONFIG_SERIO is not set
# CONFIG_CONSOLE_TRANSLATIONS is not set
CONFIG_LEGACY_PTY_COUNT=64
-# CONFIG_DEVKMEM is not set
# CONFIG_HW_RANDOM is not set
CONFIG_SPI=y
CONFIG_SPI_DEBUG=y
@@ -81,4 +80,3 @@ CONFIG_FRAME_WARN=0
CONFIG_MAGIC_SYSRQ=y
CONFIG_DEBUG_FS=y
# CONFIG_SCHED_DEBUG is not set
-CONFIG_DEBUG_INFO=y
diff --git a/arch/hexagon/include/asm/futex.h b/arch/hexagon/include/asm/futex.h
index 6b9c554aee78..9fb00a0ae89f 100644
--- a/arch/hexagon/include/asm/futex.h
+++ b/arch/hexagon/include/asm/futex.h
@@ -21,7 +21,7 @@
"3:\n" \
".section .fixup,\"ax\"\n" \
"4: %1 = #%5;\n" \
- " jump 3b\n" \
+ " jump ##3b\n" \
".previous\n" \
".section __ex_table,\"a\"\n" \
".long 1b,4b,2b,4b\n" \
@@ -90,7 +90,7 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, u32 oldval,
"3:\n"
".section .fixup,\"ax\"\n"
"4: %0 = #%6\n"
- " jump 3b\n"
+ " jump ##3b\n"
".previous\n"
".section __ex_table,\"a\"\n"
".long 1b,4b,2b,4b\n"
diff --git a/arch/hexagon/include/asm/io.h b/arch/hexagon/include/asm/io.h
index bda2a9c2df78..c33241425a5c 100644
--- a/arch/hexagon/include/asm/io.h
+++ b/arch/hexagon/include/asm/io.h
@@ -64,7 +64,6 @@ static inline void *phys_to_virt(unsigned long address)
* convert a physical pointer to a virtual kernel pointer for
* /dev/mem access.
*/
-#define xlate_dev_kmem_ptr(p) __va(p)
#define xlate_dev_mem_ptr(p) __va(p)
/*
diff --git a/arch/hexagon/include/asm/timex.h b/arch/hexagon/include/asm/timex.h
index 78338d8ada83..8d4ec76fceb4 100644
--- a/arch/hexagon/include/asm/timex.h
+++ b/arch/hexagon/include/asm/timex.h
@@ -8,6 +8,7 @@
#include <asm-generic/timex.h>
#include <asm/timer-regs.h>
+#include <asm/hexagon_vm.h>
/* Using TCX0 as our clock. CLOCK_TICK_RATE scheduled to be removed. */
#define CLOCK_TICK_RATE TCX0_CLK_RATE
@@ -16,7 +17,7 @@
static inline int read_current_timer(unsigned long *timer_val)
{
- *timer_val = (unsigned long) __vmgettime();
+ *timer_val = __vmgettime();
return 0;
}
diff --git a/arch/hexagon/kernel/hexagon_ksyms.c b/arch/hexagon/kernel/hexagon_ksyms.c
index 6fb1aaab1c29..35545a7386a0 100644
--- a/arch/hexagon/kernel/hexagon_ksyms.c
+++ b/arch/hexagon/kernel/hexagon_ksyms.c
@@ -35,8 +35,8 @@ EXPORT_SYMBOL(_dflt_cache_att);
DECLARE_EXPORT(__hexagon_memcpy_likely_aligned_min32bytes_mult8bytes);
/* Additional functions */
-DECLARE_EXPORT(__divsi3);
-DECLARE_EXPORT(__modsi3);
-DECLARE_EXPORT(__udivsi3);
-DECLARE_EXPORT(__umodsi3);
+DECLARE_EXPORT(__hexagon_divsi3);
+DECLARE_EXPORT(__hexagon_modsi3);
+DECLARE_EXPORT(__hexagon_udivsi3);
+DECLARE_EXPORT(__hexagon_umodsi3);
DECLARE_EXPORT(csum_tcpudp_magic);
diff --git a/arch/hexagon/kernel/ptrace.c b/arch/hexagon/kernel/ptrace.c
index a5a89e944257..8975f9b4cedf 100644
--- a/arch/hexagon/kernel/ptrace.c
+++ b/arch/hexagon/kernel/ptrace.c
@@ -35,7 +35,7 @@ void user_disable_single_step(struct task_struct *child)
static int genregs_get(struct task_struct *target,
const struct user_regset *regset,
- srtuct membuf to)
+ struct membuf to)
{
struct pt_regs *regs = task_pt_regs(target);
@@ -54,7 +54,7 @@ static int genregs_get(struct task_struct *target,
membuf_store(&to, regs->m0);
membuf_store(&to, regs->m1);
membuf_store(&to, regs->usr);
- membuf_store(&to, regs->p3_0);
+ membuf_store(&to, regs->preds);
membuf_store(&to, regs->gp);
membuf_store(&to, regs->ugp);
membuf_store(&to, pt_elr(regs)); // pc
diff --git a/arch/hexagon/lib/Makefile b/arch/hexagon/lib/Makefile
index 54be529d17a2..a64641e89d5f 100644
--- a/arch/hexagon/lib/Makefile
+++ b/arch/hexagon/lib/Makefile
@@ -2,4 +2,5 @@
#
# Makefile for hexagon-specific library files.
#
-obj-y = checksum.o io.o memcpy.o memset.o
+obj-y = checksum.o io.o memcpy.o memset.o memcpy_likely_aligned.o \
+ divsi3.o modsi3.o udivsi3.o umodsi3.o
diff --git a/arch/hexagon/lib/divsi3.S b/arch/hexagon/lib/divsi3.S
new file mode 100644
index 000000000000..783e09424c2c
--- /dev/null
+++ b/arch/hexagon/lib/divsi3.S
@@ -0,0 +1,67 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2021, The Linux Foundation. All rights reserved.
+ */
+
+#include <linux/linkage.h>
+
+SYM_FUNC_START(__hexagon_divsi3)
+ {
+ p0 = cmp.gt(r0,#-1)
+ p1 = cmp.gt(r1,#-1)
+ r3:2 = vabsw(r1:0)
+ }
+ {
+ p3 = xor(p0,p1)
+ r4 = sub(r2,r3)
+ r6 = cl0(r2)
+ p0 = cmp.gtu(r3,r2)
+ }
+ {
+ r0 = mux(p3,#-1,#1)
+ r7 = cl0(r3)
+ p1 = cmp.gtu(r3,r4)
+ }
+ {
+ r0 = mux(p0,#0,r0)
+ p0 = or(p0,p1)
+ if (p0.new) jumpr:nt r31
+ r6 = sub(r7,r6)
+ }
+ {
+ r7 = r6
+ r5:4 = combine(#1,r3)
+ r6 = add(#1,lsr(r6,#1))
+ p0 = cmp.gtu(r6,#4)
+ }
+ {
+ r5:4 = vaslw(r5:4,r7)
+ if (!p0) r6 = #3
+ }
+ {
+ loop0(1f,r6)
+ r7:6 = vlsrw(r5:4,#1)
+ r1:0 = #0
+ }
+ .falign
+1:
+ {
+ r5:4 = vlsrw(r5:4,#2)
+ if (!p0.new) r0 = add(r0,r5)
+ if (!p0.new) r2 = sub(r2,r4)
+ p0 = cmp.gtu(r4,r2)
+ }
+ {
+ r7:6 = vlsrw(r7:6,#2)
+ if (!p0.new) r0 = add(r0,r7)
+ if (!p0.new) r2 = sub(r2,r6)
+ p0 = cmp.gtu(r6,r2)
+ }:endloop0
+ {
+ if (!p0) r0 = add(r0,r7)
+ }
+ {
+ if (p3) r0 = sub(r1,r0)
+ jumpr r31
+ }
+SYM_FUNC_END(__hexagon_divsi3)
diff --git a/arch/hexagon/lib/memcpy_likely_aligned.S b/arch/hexagon/lib/memcpy_likely_aligned.S
new file mode 100644
index 000000000000..6a541fb90a54
--- /dev/null
+++ b/arch/hexagon/lib/memcpy_likely_aligned.S
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2021, The Linux Foundation. All rights reserved.
+ */
+
+#include <linux/linkage.h>
+
+SYM_FUNC_START(__hexagon_memcpy_likely_aligned_min32bytes_mult8bytes)
+ {
+ p0 = bitsclr(r1,#7)
+ p0 = bitsclr(r0,#7)
+ if (p0.new) r5:4 = memd(r1)
+ if (p0.new) r7:6 = memd(r1+#8)
+ }
+ {
+ if (!p0) jump:nt .Lmemcpy_call
+ if (p0) r9:8 = memd(r1+#16)
+ if (p0) r11:10 = memd(r1+#24)
+ p0 = cmp.gtu(r2,#64)
+ }
+ {
+ if (p0) jump:nt .Lmemcpy_call
+ if (!p0) memd(r0) = r5:4
+ if (!p0) memd(r0+#8) = r7:6
+ p0 = cmp.gtu(r2,#32)
+ }
+ {
+ p1 = cmp.gtu(r2,#40)
+ p2 = cmp.gtu(r2,#48)
+ if (p0) r13:12 = memd(r1+#32)
+ if (p1.new) r15:14 = memd(r1+#40)
+ }
+ {
+ memd(r0+#16) = r9:8
+ memd(r0+#24) = r11:10
+ }
+ {
+ if (p0) memd(r0+#32) = r13:12
+ if (p1) memd(r0+#40) = r15:14
+ if (!p2) jumpr:t r31
+ }
+ {
+ p0 = cmp.gtu(r2,#56)
+ r5:4 = memd(r1+#48)
+ if (p0.new) r7:6 = memd(r1+#56)
+ }
+ {
+ memd(r0+#48) = r5:4
+ if (p0) memd(r0+#56) = r7:6
+ jumpr r31
+ }
+
+.Lmemcpy_call:
+ jump memcpy
+
+SYM_FUNC_END(__hexagon_memcpy_likely_aligned_min32bytes_mult8bytes)
diff --git a/arch/hexagon/lib/modsi3.S b/arch/hexagon/lib/modsi3.S
new file mode 100644
index 000000000000..9ea1c86efac2
--- /dev/null
+++ b/arch/hexagon/lib/modsi3.S
@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2021, The Linux Foundation. All rights reserved.
+ */
+
+#include <linux/linkage.h>
+
+SYM_FUNC_START(__hexagon_modsi3)
+ {
+ p2 = cmp.ge(r0,#0)
+ r2 = abs(r0)
+ r1 = abs(r1)
+ }
+ {
+ r3 = cl0(r2)
+ r4 = cl0(r1)
+ p0 = cmp.gtu(r1,r2)
+ }
+ {
+ r3 = sub(r4,r3)
+ if (p0) jumpr r31
+ }
+ {
+ p1 = cmp.eq(r3,#0)
+ loop0(1f,r3)
+ r0 = r2
+ r2 = lsl(r1,r3)
+ }
+ .falign
+1:
+ {
+ p0 = cmp.gtu(r2,r0)
+ if (!p0.new) r0 = sub(r0,r2)
+ r2 = lsr(r2,#1)
+ if (p1) r1 = #0
+ }:endloop0
+ {
+ p0 = cmp.gtu(r2,r0)
+ if (!p0.new) r0 = sub(r0,r1)
+ if (p2) jumpr r31
+ }
+ {
+ r0 = neg(r0)
+ jumpr r31
+ }
+SYM_FUNC_END(__hexagon_modsi3)
diff --git a/arch/hexagon/lib/udivsi3.S b/arch/hexagon/lib/udivsi3.S
new file mode 100644
index 000000000000..477f27b9311c
--- /dev/null
+++ b/arch/hexagon/lib/udivsi3.S
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2021, The Linux Foundation. All rights reserved.
+ */
+
+#include <linux/linkage.h>
+
+SYM_FUNC_START(__hexagon_udivsi3)
+ {
+ r2 = cl0(r0)
+ r3 = cl0(r1)
+ r5:4 = combine(#1,#0)
+ p0 = cmp.gtu(r1,r0)
+ }
+ {
+ r6 = sub(r3,r2)
+ r4 = r1
+ r1:0 = combine(r0,r4)
+ if (p0) jumpr r31
+ }
+ {
+ r3:2 = vlslw(r5:4,r6)
+ loop0(1f,r6)
+ }
+ .falign
+1:
+ {
+ p0 = cmp.gtu(r2,r1)
+ if (!p0.new) r1 = sub(r1,r2)
+ if (!p0.new) r0 = add(r0,r3)
+ r3:2 = vlsrw(r3:2,#1)
+ }:endloop0
+ {
+ p0 = cmp.gtu(r2,r1)
+ if (!p0.new) r0 = add(r0,r3)
+ jumpr r31
+ }
+SYM_FUNC_END(__hexagon_udivsi3)
diff --git a/arch/hexagon/lib/umodsi3.S b/arch/hexagon/lib/umodsi3.S
new file mode 100644
index 000000000000..280bf06a55e7
--- /dev/null
+++ b/arch/hexagon/lib/umodsi3.S
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2021, The Linux Foundation. All rights reserved.
+ */
+
+#include <linux/linkage.h>
+
+SYM_FUNC_START(__hexagon_umodsi3)
+ {
+ r2 = cl0(r0)
+ r3 = cl0(r1)
+ p0 = cmp.gtu(r1,r0)
+ }
+ {
+ r2 = sub(r3,r2)
+ if (p0) jumpr r31
+ }
+ {
+ loop0(1f,r2)
+ p1 = cmp.eq(r2,#0)
+ r2 = lsl(r1,r2)
+ }
+ .falign
+1:
+ {
+ p0 = cmp.gtu(r2,r0)
+ if (!p0.new) r0 = sub(r0,r2)
+ r2 = lsr(r2,#1)
+ if (p1) r1 = #0
+ }:endloop0
+ {
+ p0 = cmp.gtu(r2,r0)
+ if (!p0.new) r0 = sub(r0,r1)
+ jumpr r31
+ }
+SYM_FUNC_END(__hexagon_umodsi3)
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 81e2b893b1e7..279252e3e0f7 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -13,6 +13,8 @@ config IA64
select ARCH_MIGHT_HAVE_PC_SERIO
select ACPI
select ACPI_NUMA if NUMA
+ select ARCH_ENABLE_MEMORY_HOTPLUG
+ select ARCH_ENABLE_MEMORY_HOTREMOVE
select ARCH_SUPPORTS_ACPI
select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
@@ -32,6 +34,7 @@ config IA64
select TTY
select HAVE_ARCH_TRACEHOOK
select HAVE_VIRT_CPU_ACCOUNTING
+ select HUGETLB_PAGE_SIZE_VARIABLE if HUGETLB_PAGE
select VIRT_TO_BUS
select GENERIC_IRQ_PROBE
select GENERIC_PENDING_IRQ if SMP
@@ -82,11 +85,6 @@ config STACKTRACE_SUPPORT
config GENERIC_LOCKBREAK
def_bool n
-config HUGETLB_PAGE_SIZE_VARIABLE
- bool
- depends on HUGETLB_PAGE
- default y
-
config GENERIC_CALIBRATE_DELAY
bool
default y
@@ -250,12 +248,6 @@ config HOTPLUG_CPU
can be controlled through /sys/devices/system/cpu/cpu#.
Say N if you want to disable CPU hotplug.
-config ARCH_ENABLE_MEMORY_HOTPLUG
- def_bool y
-
-config ARCH_ENABLE_MEMORY_HOTREMOVE
- def_bool y
-
config SCHED_SMT
bool "SMT scheduler support"
depends on SMP
diff --git a/arch/ia64/include/asm/io.h b/arch/ia64/include/asm/io.h
index 3d666a11a2de..6d93b923b379 100644
--- a/arch/ia64/include/asm/io.h
+++ b/arch/ia64/include/asm/io.h
@@ -277,7 +277,6 @@ extern void memset_io(volatile void __iomem *s, int c, long n);
#define memcpy_fromio memcpy_fromio
#define memcpy_toio memcpy_toio
#define memset_io memset_io
-#define xlate_dev_kmem_ptr xlate_dev_kmem_ptr
#define xlate_dev_mem_ptr xlate_dev_mem_ptr
#include <asm-generic/io.h>
#undef PCI_IOBASE
diff --git a/arch/ia64/include/asm/uaccess.h b/arch/ia64/include/asm/uaccess.h
index 179243c3dfc7..e19d2dcc0ced 100644
--- a/arch/ia64/include/asm/uaccess.h
+++ b/arch/ia64/include/asm/uaccess.h
@@ -272,22 +272,4 @@ xlate_dev_mem_ptr(phys_addr_t p)
return ptr;
}
-/*
- * Convert a virtual cached kernel memory pointer to an uncached pointer
- */
-static __inline__ void *
-xlate_dev_kmem_ptr(void *p)
-{
- struct page *page;
- void *ptr;
-
- page = virt_to_page((unsigned long)p);
- if (PageUncached(page))
- ptr = (void *)__pa(p) + __IA64_UNCACHED_OFFSET;
- else
- ptr = p;
-
- return ptr;
-}
-
#endif /* _ASM_IA64_UACCESS_H */
diff --git a/arch/ia64/mm/hugetlbpage.c b/arch/ia64/mm/hugetlbpage.c
index b331f94d20ac..f993cb36c062 100644
--- a/arch/ia64/mm/hugetlbpage.c
+++ b/arch/ia64/mm/hugetlbpage.c
@@ -25,7 +25,8 @@ unsigned int hpage_shift = HPAGE_SHIFT_DEFAULT;
EXPORT_SYMBOL(hpage_shift);
pte_t *
-huge_pte_alloc(struct mm_struct *mm, unsigned long addr, unsigned long sz)
+huge_pte_alloc(struct mm_struct *mm, struct vm_area_struct *vma,
+ unsigned long addr, unsigned long sz)
{
unsigned long taddr = htlbpage_to_page(addr);
pgd_t *pgd;
diff --git a/arch/m68k/atari/time.c b/arch/m68k/atari/time.c
index 1068670cb741..7e44d0e9d0f8 100644
--- a/arch/m68k/atari/time.c
+++ b/arch/m68k/atari/time.c
@@ -317,10 +317,3 @@ int atari_tt_hwclk( int op, struct rtc_time *t )
return( 0 );
}
-
-/*
- * Local variables:
- * c-indent-level: 4
- * tab-width: 8
- * End:
- */
diff --git a/arch/m68k/coldfire/intc-simr.c b/arch/m68k/coldfire/intc-simr.c
index 15c4b7a6e38f..f7c2c41b3156 100644
--- a/arch/m68k/coldfire/intc-simr.c
+++ b/arch/m68k/coldfire/intc-simr.c
@@ -68,9 +68,9 @@ static void intc_irq_mask(struct irq_data *d)
{
unsigned int irq = d->irq - MCFINT_VECBASE;
- if (MCFINTC2_SIMR && (irq > 128))
+ if (MCFINTC2_SIMR && (irq > 127))
__raw_writeb(irq - 128, MCFINTC2_SIMR);
- else if (MCFINTC1_SIMR && (irq > 64))
+ else if (MCFINTC1_SIMR && (irq > 63))
__raw_writeb(irq - 64, MCFINTC1_SIMR);
else
__raw_writeb(irq, MCFINTC0_SIMR);
@@ -80,9 +80,9 @@ static void intc_irq_unmask(struct irq_data *d)
{
unsigned int irq = d->irq - MCFINT_VECBASE;
- if (MCFINTC2_CIMR && (irq > 128))
+ if (MCFINTC2_CIMR && (irq > 127))
__raw_writeb(irq - 128, MCFINTC2_CIMR);
- else if (MCFINTC1_CIMR && (irq > 64))
+ else if (MCFINTC1_CIMR && (irq > 63))
__raw_writeb(irq - 64, MCFINTC1_CIMR);
else
__raw_writeb(irq, MCFINTC0_CIMR);
@@ -115,9 +115,9 @@ static unsigned int intc_irq_startup(struct irq_data *d)
}
irq -= MCFINT_VECBASE;
- if (MCFINTC2_ICR0 && (irq > 128))
+ if (MCFINTC2_ICR0 && (irq > 127))
__raw_writeb(5, MCFINTC2_ICR0 + irq - 128);
- else if (MCFINTC1_ICR0 && (irq > 64))
+ else if (MCFINTC1_ICR0 && (irq > 63))
__raw_writeb(5, MCFINTC1_ICR0 + irq - 64);
else
__raw_writeb(5, MCFINTC0_ICR0 + irq);
diff --git a/arch/m68k/configs/amcore_defconfig b/arch/m68k/configs/amcore_defconfig
index 3a84f24d41c8..6d9ed2198170 100644
--- a/arch/m68k/configs/amcore_defconfig
+++ b/arch/m68k/configs/amcore_defconfig
@@ -60,7 +60,6 @@ CONFIG_DM9000=y
# CONFIG_VT is not set
# CONFIG_UNIX98_PTYS is not set
# CONFIG_DEVMEM is not set
-# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_MCF=y
CONFIG_SERIAL_MCF_BAUDRATE=115200
CONFIG_SERIAL_MCF_CONSOLE=y
diff --git a/arch/m68k/include/asm/bitops.h b/arch/m68k/include/asm/bitops.h
index 10133a968c8e..7b414099e5fc 100644
--- a/arch/m68k/include/asm/bitops.h
+++ b/arch/m68k/include/asm/bitops.h
@@ -440,8 +440,6 @@ static inline unsigned long ffz(unsigned long word)
#endif
-#include <asm-generic/bitops/find.h>
-
#ifdef __KERNEL__
#if defined(CONFIG_CPU_HAS_NO_BITFIELDS)
@@ -525,10 +523,12 @@ static inline int __fls(int x)
#define __clear_bit_unlock clear_bit_unlock
#include <asm-generic/bitops/ext2-atomic.h>
-#include <asm-generic/bitops/le.h>
#include <asm-generic/bitops/fls64.h>
#include <asm-generic/bitops/sched.h>
#include <asm-generic/bitops/hweight.h>
+#include <asm-generic/bitops/le.h>
#endif /* __KERNEL__ */
+#include <asm-generic/bitops/find.h>
+
#endif /* _M68K_BITOPS_H */
diff --git a/arch/m68k/include/asm/io_mm.h b/arch/m68k/include/asm/io_mm.h
index 819f611dccf2..d41fa488453b 100644
--- a/arch/m68k/include/asm/io_mm.h
+++ b/arch/m68k/include/asm/io_mm.h
@@ -397,11 +397,6 @@ static inline void isa_delay(void)
*/
#define xlate_dev_mem_ptr(p) __va(p)
-/*
- * Convert a virtual cached pointer to an uncached pointer
- */
-#define xlate_dev_kmem_ptr(p) p
-
#define readb_relaxed(addr) readb(addr)
#define readw_relaxed(addr) readw(addr)
#define readl_relaxed(addr) readl(addr)
diff --git a/arch/microblaze/include/asm/ftrace.h b/arch/microblaze/include/asm/ftrace.h
index 5db7f4489f05..6a92bed37794 100644
--- a/arch/microblaze/include/asm/ftrace.h
+++ b/arch/microblaze/include/asm/ftrace.h
@@ -13,7 +13,7 @@ extern void ftrace_call_graph(void);
#endif
#ifdef CONFIG_DYNAMIC_FTRACE
-/* reloction of mcount call site is the same as the address */
+/* relocation of mcount call site is the same as the address */
static inline unsigned long ftrace_call_adjust(unsigned long addr)
{
return addr;
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 49a3c9cd1cb2..ed51970c08e7 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -19,6 +19,7 @@ config MIPS
select ARCH_USE_MEMTEST
select ARCH_USE_QUEUED_RWLOCKS
select ARCH_USE_QUEUED_SPINLOCKS
+ select ARCH_SUPPORTS_HUGETLBFS if CPU_SUPPORTS_HUGEPAGES
select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
select ARCH_WANT_IPC_PARSE_VERSION
select ARCH_WANT_LD_ORPHAN_WARN
@@ -1287,11 +1288,6 @@ config SYS_SUPPORTS_BIG_ENDIAN
config SYS_SUPPORTS_LITTLE_ENDIAN
bool
-config SYS_SUPPORTS_HUGETLBFS
- bool
- depends on CPU_SUPPORTS_HUGEPAGES
- default y
-
config MIPS_HUGE_TLB_SUPPORT
def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
diff --git a/arch/mips/include/asm/io.h b/arch/mips/include/asm/io.h
index 2c138450ad3b..6f5c86d2bab4 100644
--- a/arch/mips/include/asm/io.h
+++ b/arch/mips/include/asm/io.h
@@ -564,11 +564,6 @@ extern void (*_dma_cache_inv)(unsigned long start, unsigned long size);
*/
#define xlate_dev_mem_ptr(p) __va(p)
-/*
- * Convert a virtual cached pointer to an uncached pointer
- */
-#define xlate_dev_kmem_ptr(p) p
-
void __ioread64_copy(void *to, const void __iomem *from, size_t count);
#endif /* _ASM_IO_H */
diff --git a/arch/mips/mm/hugetlbpage.c b/arch/mips/mm/hugetlbpage.c
index b9f76f433617..7eaff5b07873 100644
--- a/arch/mips/mm/hugetlbpage.c
+++ b/arch/mips/mm/hugetlbpage.c
@@ -21,8 +21,8 @@
#include <asm/tlb.h>
#include <asm/tlbflush.h>
-pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr,
- unsigned long sz)
+pte_t *huge_pte_alloc(struct mm_struct *mm, struct vm_area_struct *vma,
+ unsigned long addr, unsigned long sz)
{
pgd_t *pgd;
p4d_t *p4d;
diff --git a/arch/nds32/include/asm/uaccess.h b/arch/nds32/include/asm/uaccess.h
index 010ba5f1d7dd..d4cbf069dc22 100644
--- a/arch/nds32/include/asm/uaccess.h
+++ b/arch/nds32/include/asm/uaccess.h
@@ -260,7 +260,6 @@ do { \
extern unsigned long __arch_clear_user(void __user * addr, unsigned long n);
extern long strncpy_from_user(char *dest, const char __user * src, long count);
-extern __must_check long strlen_user(const char __user * str);
extern __must_check long strnlen_user(const char __user * str, long n);
extern unsigned long __arch_copy_from_user(void *to, const void __user * from,
unsigned long n);
diff --git a/arch/nds32/kernel/ftrace.c b/arch/nds32/kernel/ftrace.c
index 414f8a780cc3..0e23e3a8df6b 100644
--- a/arch/nds32/kernel/ftrace.c
+++ b/arch/nds32/kernel/ftrace.c
@@ -236,7 +236,7 @@ void __naked return_to_handler(void)
"bal ftrace_return_to_handler\n\t"
"move $lp, $r0 \n\t"
- /* restore state nedded by the ABI */
+ /* restore state needed by the ABI */
"lmw.bim $r0,[$sp],$r1,#0x0 \n\t");
}
diff --git a/arch/nios2/include/asm/uaccess.h b/arch/nios2/include/asm/uaccess.h
index a741abbed6fb..ba9340e96fd4 100644
--- a/arch/nios2/include/asm/uaccess.h
+++ b/arch/nios2/include/asm/uaccess.h
@@ -83,7 +83,6 @@ raw_copy_to_user(void __user *to, const void *from, unsigned long n);
extern long strncpy_from_user(char *__to, const char __user *__from,
long __len);
-extern __must_check long strlen_user(const char __user *str);
extern __must_check long strnlen_user(const char __user *s, long n);
/* Optimized macros */
diff --git a/arch/openrisc/configs/or1ksim_defconfig b/arch/openrisc/configs/or1ksim_defconfig
index 75f2da324d0e..6e1e004047c7 100644
--- a/arch/openrisc/configs/or1ksim_defconfig
+++ b/arch/openrisc/configs/or1ksim_defconfig
@@ -43,7 +43,6 @@ CONFIG_MICREL_PHY=y
# CONFIG_SERIO is not set
# CONFIG_VT is not set
# CONFIG_LEGACY_PTYS is not set
-# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_OF_PLATFORM=y
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index afc3b8d03572..bde9907bc5b2 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -12,6 +12,7 @@ config PARISC
select ARCH_HAS_STRICT_KERNEL_RWX
select ARCH_HAS_UBSAN_SANITIZE_ALL
select ARCH_NO_SG_CHAIN
+ select ARCH_SUPPORTS_HUGETLBFS if PA20
select ARCH_SUPPORTS_MEMORY_FAILURE
select DMA_OPS
select RTC_CLASS
@@ -138,10 +139,6 @@ config PGTABLE_LEVELS
default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
default 2
-config SYS_SUPPORTS_HUGETLBFS
- def_bool y if PA20
-
-
menu "Processor type and features"
choice
diff --git a/arch/parisc/include/asm/Kbuild b/arch/parisc/include/asm/Kbuild
index 4406475a2304..e6e7f74c8ac9 100644
--- a/arch/parisc/include/asm/Kbuild
+++ b/arch/parisc/include/asm/Kbuild
@@ -1,7 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
generated-y += syscall_table_32.h
generated-y += syscall_table_64.h
-generated-y += syscall_table_c32.h
generic-y += kvm_para.h
generic-y += mcs_spinlock.h
generic-y += user.h
diff --git a/arch/parisc/include/asm/io.h b/arch/parisc/include/asm/io.h
index 8a11b8cf4719..0b5259102319 100644
--- a/arch/parisc/include/asm/io.h
+++ b/arch/parisc/include/asm/io.h
@@ -316,11 +316,6 @@ extern void iowrite64be(u64 val, void __iomem *addr);
*/
#define xlate_dev_mem_ptr(p) __va(p)
-/*
- * Convert a virtual cached pointer to an uncached pointer
- */
-#define xlate_dev_kmem_ptr(p) p
-
extern int devmem_is_allowed(unsigned long pfn);
#endif
diff --git a/arch/parisc/include/asm/pdc_chassis.h b/arch/parisc/include/asm/pdc_chassis.h
index ae3e108d22ad..d6d82f53d3d0 100644
--- a/arch/parisc/include/asm/pdc_chassis.h
+++ b/arch/parisc/include/asm/pdc_chassis.h
@@ -365,4 +365,3 @@ void parisc_pdc_chassis_init(void);
PDC_CHASSIS_EOM_SET )
#endif /* _PARISC_PDC_CHASSIS_H */
-/* vim: set ts=8 */
diff --git a/arch/parisc/kernel/setup.c b/arch/parisc/kernel/setup.c
index e320bae501d3..3fb86ee507dd 100644
--- a/arch/parisc/kernel/setup.c
+++ b/arch/parisc/kernel/setup.c
@@ -268,7 +268,7 @@ static int __init parisc_init_resources(void)
result = request_resource(&iomem_resource, &local_broadcast);
if (result < 0) {
printk(KERN_ERR
- "%s: failed to claim %saddress space!\n",
+ "%s: failed to claim %s address space!\n",
__FILE__, local_broadcast.name);
return result;
}
diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S
index 322503780db6..3f24a0af1e04 100644
--- a/arch/parisc/kernel/syscall.S
+++ b/arch/parisc/kernel/syscall.S
@@ -919,24 +919,24 @@ ENTRY(lws_table)
END(lws_table)
/* End of lws table */
+#ifdef CONFIG_64BIT
+#define __SYSCALL_WITH_COMPAT(nr, native, compat) __SYSCALL(nr, compat)
+#else
+#define __SYSCALL_WITH_COMPAT(nr, native, compat) __SYSCALL(nr, native)
+#endif
#define __SYSCALL(nr, entry) ASM_ULONG_INSN entry
.align 8
ENTRY(sys_call_table)
.export sys_call_table,data
-#ifdef CONFIG_64BIT
-#include <asm/syscall_table_c32.h> /* Compat syscalls */
-#else
-#include <asm/syscall_table_32.h> /* 32-bit native syscalls */
-#endif
+#include <asm/syscall_table_32.h> /* 32-bit syscalls */
END(sys_call_table)
#ifdef CONFIG_64BIT
.align 8
ENTRY(sys_call_table64)
-#include <asm/syscall_table_64.h> /* 64-bit native syscalls */
+#include <asm/syscall_table_64.h> /* 64-bit syscalls */
END(sys_call_table64)
#endif
-#undef __SYSCALL
/*
All light-weight-syscall atomic operations
@@ -961,5 +961,3 @@ END(lws_lock_start)
.previous
.end
-
-
diff --git a/arch/parisc/kernel/syscalls/Makefile b/arch/parisc/kernel/syscalls/Makefile
index 283f64407b07..0f2ea5bcb0d7 100644
--- a/arch/parisc/kernel/syscalls/Makefile
+++ b/arch/parisc/kernel/syscalls/Makefile
@@ -6,46 +6,34 @@ _dummy := $(shell [ -d '$(uapi)' ] || mkdir -p '$(uapi)') \
$(shell [ -d '$(kapi)' ] || mkdir -p '$(kapi)')
syscall := $(src)/syscall.tbl
-syshdr := $(srctree)/$(src)/syscallhdr.sh
-systbl := $(srctree)/$(src)/syscalltbl.sh
+syshdr := $(srctree)/scripts/syscallhdr.sh
+systbl := $(srctree)/scripts/syscalltbl.sh
quiet_cmd_syshdr = SYSHDR $@
- cmd_syshdr = $(CONFIG_SHELL) '$(syshdr)' '$<' '$@' \
- '$(syshdr_abis_$(basetarget))' \
- '$(syshdr_pfx_$(basetarget))' \
- '$(syshdr_offset_$(basetarget))'
+ cmd_syshdr = $(CONFIG_SHELL) $(syshdr) --emit-nr --abis $(abis) $< $@
quiet_cmd_systbl = SYSTBL $@
- cmd_systbl = $(CONFIG_SHELL) '$(systbl)' '$<' '$@' \
- '$(systbl_abis_$(basetarget))' \
- '$(systbl_abi_$(basetarget))' \
- '$(systbl_offset_$(basetarget))'
+ cmd_systbl = $(CONFIG_SHELL) $(systbl) --abis $(abis) $< $@
-syshdr_abis_unistd_32 := common,32
+$(uapi)/unistd_32.h: abis := common,32
$(uapi)/unistd_32.h: $(syscall) $(syshdr) FORCE
$(call if_changed,syshdr)
-syshdr_abis_unistd_64 := common,64
+$(uapi)/unistd_64.h: abis := common,64
$(uapi)/unistd_64.h: $(syscall) $(syshdr) FORCE
$(call if_changed,syshdr)
-systbl_abis_syscall_table_32 := common,32
+$(kapi)/syscall_table_32.h: abis := common,32
$(kapi)/syscall_table_32.h: $(syscall) $(systbl) FORCE
$(call if_changed,systbl)
-systbl_abis_syscall_table_64 := common,64
+$(kapi)/syscall_table_64.h: abis := common,64
$(kapi)/syscall_table_64.h: $(syscall) $(systbl) FORCE
$(call if_changed,systbl)
-systbl_abis_syscall_table_c32 := common,32
-systbl_abi_syscall_table_c32 := c32
-$(kapi)/syscall_table_c32.h: $(syscall) $(systbl) FORCE
- $(call if_changed,systbl)
-
uapisyshdr-y += unistd_32.h unistd_64.h
kapisyshdr-y += syscall_table_32.h \
- syscall_table_64.h \
- syscall_table_c32.h
+ syscall_table_64.h
uapisyshdr-y := $(addprefix $(uapi)/, $(uapisyshdr-y))
kapisyshdr-y := $(addprefix $(kapi)/, $(kapisyshdr-y))
diff --git a/arch/parisc/kernel/syscalls/syscallhdr.sh b/arch/parisc/kernel/syscalls/syscallhdr.sh
deleted file mode 100644
index 730db288fe54..000000000000
--- a/arch/parisc/kernel/syscalls/syscallhdr.sh
+++ /dev/null
@@ -1,36 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-
-in="$1"
-out="$2"
-my_abis=`echo "($3)" | tr ',' '|'`
-prefix="$4"
-offset="$5"
-
-fileguard=_UAPI_ASM_PARISC_`basename "$out" | sed \
- -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \
- -e 's/[^A-Z0-9_]/_/g' -e 's/__/_/g'`
-grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
- printf "#ifndef %s\n" "${fileguard}"
- printf "#define %s\n" "${fileguard}"
- printf "\n"
-
- nxt=0
- while read nr abi name entry compat ; do
- if [ -z "$offset" ]; then
- printf "#define __NR_%s%s\t%s\n" \
- "${prefix}" "${name}" "${nr}"
- else
- printf "#define __NR_%s%s\t(%s + %s)\n" \
- "${prefix}" "${name}" "${offset}" "${nr}"
- fi
- nxt=$((nr+1))
- done
-
- printf "\n"
- printf "#ifdef __KERNEL__\n"
- printf "#define __NR_syscalls\t%s\n" "${nxt}"
- printf "#endif\n"
- printf "\n"
- printf "#endif /* %s */\n" "${fileguard}"
-) > "$out"
diff --git a/arch/parisc/kernel/syscalls/syscalltbl.sh b/arch/parisc/kernel/syscalls/syscalltbl.sh
deleted file mode 100644
index f7393a7b18aa..000000000000
--- a/arch/parisc/kernel/syscalls/syscalltbl.sh
+++ /dev/null
@@ -1,36 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-
-in="$1"
-out="$2"
-my_abis=`echo "($3)" | tr ',' '|'`
-my_abi="$4"
-offset="$5"
-
-emit() {
- t_nxt="$1"
- t_nr="$2"
- t_entry="$3"
-
- while [ $t_nxt -lt $t_nr ]; do
- printf "__SYSCALL(%s,sys_ni_syscall)\n" "${t_nxt}"
- t_nxt=$((t_nxt+1))
- done
- printf "__SYSCALL(%s,%s)\n" "${t_nxt}" "${t_entry}"
-}
-
-grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
- nxt=0
- if [ -z "$offset" ]; then
- offset=0
- fi
-
- while read nr abi name entry compat ; do
- if [ "$my_abi" = "c32" ] && [ ! -z "$compat" ]; then
- emit $((nxt+offset)) $((nr+offset)) $compat
- else
- emit $((nxt+offset)) $((nr+offset)) $entry
- fi
- nxt=$((nr+1))
- done
-) > "$out"
diff --git a/arch/parisc/mm/hugetlbpage.c b/arch/parisc/mm/hugetlbpage.c
index 43652de5f139..d1d3990b83f6 100644
--- a/arch/parisc/mm/hugetlbpage.c
+++ b/arch/parisc/mm/hugetlbpage.c
@@ -44,7 +44,7 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
}
-pte_t *huge_pte_alloc(struct mm_struct *mm,
+pte_t *huge_pte_alloc(struct mm_struct *mm, struct vm_area_struct *vma,
unsigned long addr, unsigned long sz)
{
pgd_t *pgd;
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index ab17a56c3d10..088dd2afcfe4 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -118,6 +118,8 @@ config PPC
# Please keep this list sorted alphabetically.
#
select ARCH_32BIT_OFF_T if PPC32
+ select ARCH_ENABLE_MEMORY_HOTPLUG
+ select ARCH_ENABLE_MEMORY_HOTREMOVE
select ARCH_HAS_COPY_MC if PPC64
select ARCH_HAS_DEBUG_VIRTUAL
select ARCH_HAS_DEBUG_VM_PGTABLE
@@ -184,8 +186,8 @@ config PPC
select GENERIC_TIME_VSYSCALL
select GENERIC_VDSO_TIME_NS
select HAVE_ARCH_AUDITSYSCALL
- select HAVE_ARCH_HUGE_VMAP if PPC_BOOK3S_64 && PPC_RADIX_MMU
select HAVE_ARCH_HUGE_VMALLOC if HAVE_ARCH_HUGE_VMAP
+ select HAVE_ARCH_HUGE_VMAP if PPC_BOOK3S_64 && PPC_RADIX_MMU
select HAVE_ARCH_JUMP_LABEL
select HAVE_ARCH_JUMP_LABEL_RELATIVE
select HAVE_ARCH_KASAN if PPC32 && PPC_PAGE_SHIFT <= 14
@@ -244,6 +246,7 @@ config PPC
select HAVE_STACKPROTECTOR if PPC64 && $(cc-option,-mstack-protector-guard=tls -mstack-protector-guard-reg=r13)
select HAVE_SYSCALL_TRACEPOINTS
select HAVE_VIRT_CPU_ACCOUNTING
+ select HUGETLB_PAGE_SIZE_VARIABLE if PPC_BOOK3S_64 && HUGETLB_PAGE
select IOMMU_HELPER if PPC64
select IRQ_DOMAIN
select IRQ_FORCED_THREADING
@@ -421,11 +424,6 @@ config HIGHMEM
source "kernel/Kconfig.hz"
-config HUGETLB_PAGE_SIZE_VARIABLE
- bool
- depends on HUGETLB_PAGE && PPC_BOOK3S_64
- default y
-
config MATH_EMULATION
bool "Math emulation"
depends on 4xx || PPC_8xx || PPC_MPC832x || BOOKE
@@ -521,12 +519,6 @@ config ARCH_CPU_PROBE_RELEASE
def_bool y
depends on HOTPLUG_CPU
-config ARCH_ENABLE_MEMORY_HOTPLUG
- def_bool y
-
-config ARCH_ENABLE_MEMORY_HOTREMOVE
- def_bool y
-
config PPC64_SUPPORTS_MEMORY_FAILURE
bool "Add support for memory hwpoison"
depends on PPC_BOOK3S_64
@@ -706,9 +698,6 @@ config ARCH_SPARSEMEM_DEFAULT
def_bool y
depends on PPC_BOOK3S_64
-config SYS_SUPPORTS_HUGETLBFS
- bool
-
config ILLEGAL_POINTER_VALUE
hex
# This is roughly half way between the top of user space and the bottom
diff --git a/arch/powerpc/include/asm/ftrace.h b/arch/powerpc/include/asm/ftrace.h
index bc76970b6ee5..debe8c4f7062 100644
--- a/arch/powerpc/include/asm/ftrace.h
+++ b/arch/powerpc/include/asm/ftrace.h
@@ -12,7 +12,7 @@
#ifdef __ASSEMBLY__
-/* Based off of objdump optput from glibc */
+/* Based off of objdump output from glibc */
#define MCOUNT_SAVE_FRAME \
stwu r1,-48(r1); \
@@ -52,7 +52,7 @@ extern void _mcount(void);
static inline unsigned long ftrace_call_adjust(unsigned long addr)
{
- /* reloction of mcount call site is the same as the address */
+ /* relocation of mcount call site is the same as the address */
return addr;
}
diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h
index 273edd208ec5..f130783c8301 100644
--- a/arch/powerpc/include/asm/io.h
+++ b/arch/powerpc/include/asm/io.h
@@ -663,11 +663,6 @@ static inline void name at \
#define xlate_dev_mem_ptr(p) __va(p)
/*
- * Convert a virtual cached pointer to an uncached pointer
- */
-#define xlate_dev_kmem_ptr(p) p
-
-/*
* We don't do relaxed operations yet, at least not with this semantic
*/
#define readb_relaxed(addr) readb(addr)
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index d142b76d507d..9a75ba078e1b 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -106,7 +106,8 @@ static int __hugepte_alloc(struct mm_struct *mm, hugepd_t *hpdp,
* At this point we do the placement change only for BOOK3S 64. This would
* possibly work on other subarchs.
*/
-pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr, unsigned long sz)
+pte_t *huge_pte_alloc(struct mm_struct *mm, struct vm_area_struct *vma,
+ unsigned long addr, unsigned long sz)
{
pgd_t *pg;
p4d_t *p4;
diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index e4b05667686e..f998e655b570 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -40,8 +40,8 @@ config PPC_85xx
config PPC_8xx
bool "Freescale 8xx"
+ select ARCH_SUPPORTS_HUGETLBFS
select FSL_SOC
- select SYS_SUPPORTS_HUGETLBFS
select PPC_HAVE_KUEP
select PPC_HAVE_KUAP
select HAVE_ARCH_VMAP_STACK
@@ -95,9 +95,11 @@ config PPC_BOOK3S_64
bool "Server processors"
select PPC_FPU
select PPC_HAVE_PMU_SUPPORT
- select SYS_SUPPORTS_HUGETLBFS
select HAVE_ARCH_TRANSPARENT_HUGEPAGE
+ select ARCH_ENABLE_HUGEPAGE_MIGRATION if HUGETLB_PAGE && MIGRATION
+ select ARCH_ENABLE_PMD_SPLIT_PTLOCK
select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE
+ select ARCH_SUPPORTS_HUGETLBFS
select ARCH_SUPPORTS_NUMA_BALANCING
select IRQ_WORK
select PPC_MM_SLICES
@@ -280,9 +282,9 @@ config FSL_BOOKE
# this is for common code between PPC32 & PPC64 FSL BOOKE
config PPC_FSL_BOOK3E
bool
+ select ARCH_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64
select FSL_EMB_PERFMON
select PPC_SMP_MUXED_IPI
- select SYS_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64
select PPC_DOORBELL
default y if FSL_BOOKE
@@ -358,10 +360,6 @@ config SPE
If in doubt, say Y here.
-config ARCH_ENABLE_SPLIT_PMD_PTLOCK
- def_bool y
- depends on PPC_BOOK3S_64
-
config PPC_RADIX_MMU
bool "Radix MMU Support"
depends on PPC_BOOK3S_64
@@ -421,10 +419,6 @@ config PPC_PKEY
depends on PPC_BOOK3S_64
depends on PPC_MEM_KEYS || PPC_KUAP || PPC_KUEP
-config ARCH_ENABLE_HUGEPAGE_MIGRATION
- def_bool y
- depends on PPC_BOOK3S_64 && HUGETLB_PAGE && MIGRATION
-
config PPC_MMU_NOHASH
def_bool y
diff --git a/arch/powerpc/platforms/pseries/svm.c b/arch/powerpc/platforms/pseries/svm.c
index 7b739cc7a8a9..1d829e257996 100644
--- a/arch/powerpc/platforms/pseries/svm.c
+++ b/arch/powerpc/platforms/pseries/svm.c
@@ -55,9 +55,9 @@ void __init svm_swiotlb_init(void)
if (vstart && !swiotlb_init_with_tbl(vstart, io_tlb_nslabs, false))
return;
- if (io_tlb_start)
- memblock_free_early(io_tlb_start,
- PAGE_ALIGN(io_tlb_nslabs << IO_TLB_SHIFT));
+
+ memblock_free_early(__pa(vstart),
+ PAGE_ALIGN(io_tlb_nslabs << IO_TLB_SHIFT));
panic("SVM: Cannot allocate SWIOTLB buffer");
}
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 4515a10c5d22..a8ad8eb76120 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -20,6 +20,7 @@ config RISCV
select ARCH_HAS_DEBUG_VM_PGTABLE
select ARCH_HAS_DEBUG_VIRTUAL if MMU
select ARCH_HAS_DEBUG_WX
+ select ARCH_HAS_FORTIFY_SOURCE
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_GIGANTIC_PAGE
select ARCH_HAS_KCOV
@@ -27,18 +28,23 @@ config RISCV
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_SET_DIRECT_MAP
select ARCH_HAS_SET_MEMORY
- select ARCH_HAS_STRICT_KERNEL_RWX if MMU
+ select ARCH_HAS_STRICT_KERNEL_RWX if MMU && !XIP_KERNEL
+ select ARCH_HAS_STRICT_MODULE_RWX if MMU && !XIP_KERNEL
+ select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_OPTIONAL_KERNEL_RWX if ARCH_HAS_STRICT_KERNEL_RWX
select ARCH_OPTIONAL_KERNEL_RWX_DEFAULT
+ select ARCH_SUPPORTS_HUGETLBFS if MMU
select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
select ARCH_WANT_FRAME_POINTERS
select ARCH_WANT_HUGE_PMD_SHARE if 64BIT
+ select BINFMT_FLAT_NO_DATA_START_OFFSET if !MMU
select CLONE_BACKWARDS
select CLINT_TIMER if !MMU
select COMMON_CLK
select EDAC_SUPPORT
select GENERIC_ARCH_TOPOLOGY if SMP
select GENERIC_ATOMIC64 if !64BIT
+ select GENERIC_CLOCKEVENTS_BROADCAST if SMP
select GENERIC_EARLY_IOREMAP
select GENERIC_GETTIMEOFDAY if HAVE_GENERIC_VDSO
select GENERIC_IOREMAP
@@ -165,10 +171,6 @@ config ARCH_WANT_GENERAL_HUGETLB
config ARCH_SUPPORTS_UPROBES
def_bool y
-config SYS_SUPPORTS_HUGETLBFS
- depends on MMU
- def_bool y
-
config STACKTRACE_SUPPORT
def_bool y
@@ -204,6 +206,7 @@ config LOCKDEP_SUPPORT
def_bool y
source "arch/riscv/Kconfig.socs"
+source "arch/riscv/Kconfig.erratas"
menu "Platform type"
@@ -227,7 +230,7 @@ config ARCH_RV64I
bool "RV64I"
select 64BIT
select ARCH_SUPPORTS_INT128 if CC_HAS_INT128 && GCC_VERSION >= 50000
- select HAVE_DYNAMIC_FTRACE if MMU
+ select HAVE_DYNAMIC_FTRACE if MMU && $(cc-option,-fpatchable-function-entry=8)
select HAVE_DYNAMIC_FTRACE_WITH_REGS if HAVE_DYNAMIC_FTRACE
select HAVE_FTRACE_MCOUNT_RECORD
select HAVE_FUNCTION_GRAPH_TRACER
@@ -386,6 +389,31 @@ config RISCV_SBI_V01
help
This config allows kernel to use SBI v0.1 APIs. This will be
deprecated in future once legacy M-mode software are no longer in use.
+
+config KEXEC
+ bool "Kexec system call"
+ select KEXEC_CORE
+ select HOTPLUG_CPU if SMP
+ depends on MMU
+ help
+ kexec is a system call that implements the ability to shutdown your
+ current kernel, and to start another kernel. It is like a reboot
+ but it is independent of the system firmware. And like a reboot
+ you can start any kernel with it, not just Linux.
+
+ The name comes from the similarity to the exec system call.
+
+config CRASH_DUMP
+ bool "Build kdump crash kernel"
+ help
+ Generate crash dump after being started by kexec. This should
+ be normally only set in special crash dump kernels which are
+ loaded in the main kernel with kexec-tools into a specially
+ reserved region and then later executed after a crash by
+ kdump/kexec.
+
+ For more details see Documentation/admin-guide/kdump/kdump.rst
+
endmenu
menu "Boot options"
@@ -438,7 +466,7 @@ config EFI_STUB
config EFI
bool "UEFI runtime support"
- depends on OF
+ depends on OF && !XIP_KERNEL
select LIBFDT
select UCS2_STRING
select EFI_PARAMS_FROM_FDT
@@ -462,11 +490,63 @@ config STACKPROTECTOR_PER_TASK
def_bool y
depends on STACKPROTECTOR && CC_HAVE_STACKPROTECTOR_TLS
+config PHYS_RAM_BASE_FIXED
+ bool "Explicitly specified physical RAM address"
+ default n
+
+config PHYS_RAM_BASE
+ hex "Platform Physical RAM address"
+ depends on PHYS_RAM_BASE_FIXED
+ default "0x80000000"
+ help
+ This is the physical address of RAM in the system. It has to be
+ explicitly specified to run early relocations of read-write data
+ from flash to RAM.
+
+config XIP_KERNEL
+ bool "Kernel Execute-In-Place from ROM"
+ depends on MMU && SPARSEMEM
+ # This prevents XIP from being enabled by all{yes,mod}config, which
+ # fail to build since XIP doesn't support large kernels.
+ depends on !COMPILE_TEST
+ select PHYS_RAM_BASE_FIXED
+ help
+ Execute-In-Place allows the kernel to run from non-volatile storage
+ directly addressable by the CPU, such as NOR flash. This saves RAM
+ space since the text section of the kernel is not loaded from flash
+ to RAM. Read-write sections, such as the data section and stack,
+ are still copied to RAM. The XIP kernel is not compressed since
+ it has to run directly from flash, so it will take more space to
+ store it. The flash address used to link the kernel object files,
+ and for storing it, is configuration dependent. Therefore, if you
+ say Y here, you must know the proper physical address where to
+ store the kernel image depending on your own flash memory usage.
+
+ Also note that the make target becomes "make xipImage" rather than
+ "make zImage" or "make Image". The final kernel binary to put in
+ ROM memory will be arch/riscv/boot/xipImage.
+
+ SPARSEMEM is required because the kernel text and rodata that are
+ flash resident are not backed by memmap, then any attempt to get
+ a struct page on those regions will trigger a fault.
+
+ If unsure, say N.
+
+config XIP_PHYS_ADDR
+ hex "XIP Kernel Physical Location"
+ depends on XIP_KERNEL
+ default "0x21000000"
+ help
+ This is the physical address in your flash memory the kernel will
+ be linked for and stored to. This address is dependent on your
+ own flash usage.
+
endmenu
config BUILTIN_DTB
- def_bool n
+ bool
depends on OF
+ default y if XIP_KERNEL
menu "Power management options"
diff --git a/arch/riscv/Kconfig.erratas b/arch/riscv/Kconfig.erratas
new file mode 100644
index 000000000000..d5d03ae8d685
--- /dev/null
+++ b/arch/riscv/Kconfig.erratas
@@ -0,0 +1,44 @@
+menu "CPU errata selection"
+
+config RISCV_ERRATA_ALTERNATIVE
+ bool "RISC-V alternative scheme"
+ default y
+ help
+ This Kconfig allows the kernel to automatically patch the
+ errata required by the execution platform at run time. The
+ code patching is performed once in the boot stages. It means
+ that the overhead from this mechanism is just taken once.
+
+config ERRATA_SIFIVE
+ bool "SiFive errata"
+ depends on RISCV_ERRATA_ALTERNATIVE
+ help
+ All SiFive errata Kconfig depend on this Kconfig. Disabling
+ this Kconfig will disable all SiFive errata. Please say "Y"
+ here if your platform uses SiFive CPU cores.
+
+ Otherwise, please say "N" here to avoid unnecessary overhead.
+
+config ERRATA_SIFIVE_CIP_453
+ bool "Apply SiFive errata CIP-453"
+ depends on ERRATA_SIFIVE
+ default y
+ help
+ This will apply the SiFive CIP-453 errata to add sign extension
+ to the $badaddr when exception type is instruction page fault
+ and instruction access fault.
+
+ If you don't know what to do here, say "Y".
+
+config ERRATA_SIFIVE_CIP_1200
+ bool "Apply SiFive errata CIP-1200"
+ depends on ERRATA_SIFIVE
+ default y
+ help
+ This will apply the SiFive CIP-1200 errata to repalce all
+ "sfence.vma addr" with "sfence.vma" to ensure that the addr
+ has been flushed from TLB.
+
+ If you don't know what to do here, say "Y".
+
+endmenu
diff --git a/arch/riscv/Kconfig.socs b/arch/riscv/Kconfig.socs
index e1b2690b6e45..ed963761fbd2 100644
--- a/arch/riscv/Kconfig.socs
+++ b/arch/riscv/Kconfig.socs
@@ -1,5 +1,12 @@
menu "SoC selection"
+config SOC_MICROCHIP_POLARFIRE
+ bool "Microchip PolarFire SoCs"
+ select MCHP_CLK_MPFS
+ select SIFIVE_PLIC
+ help
+ This enables support for Microchip PolarFire SoC platforms.
+
config SOC_SIFIVE
bool "SiFive SoCs"
select SERIAL_SIFIVE if TTY
@@ -7,6 +14,7 @@ config SOC_SIFIVE
select CLK_SIFIVE
select CLK_SIFIVE_PRCI
select SIFIVE_PLIC
+ select ERRATA_SIFIVE
help
This enables support for SiFive SoC platform hardware.
diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile
index 1368d943f1f3..3eb9590a0775 100644
--- a/arch/riscv/Makefile
+++ b/arch/riscv/Makefile
@@ -82,11 +82,16 @@ CHECKFLAGS += -D__riscv -D__riscv_xlen=$(BITS)
# Default target when executing plain make
boot := arch/riscv/boot
+ifeq ($(CONFIG_XIP_KERNEL),y)
+KBUILD_IMAGE := $(boot)/xipImage
+else
KBUILD_IMAGE := $(boot)/Image.gz
+endif
head-y := arch/riscv/kernel/head.o
core-y += arch/riscv/
+core-$(CONFIG_RISCV_ERRATA_ALTERNATIVE) += arch/riscv/errata/
libs-y += arch/riscv/lib/
libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a
@@ -95,12 +100,14 @@ PHONY += vdso_install
vdso_install:
$(Q)$(MAKE) $(build)=arch/riscv/kernel/vdso $@
+ifneq ($(CONFIG_XIP_KERNEL),y)
ifeq ($(CONFIG_RISCV_M_MODE)$(CONFIG_SOC_CANAAN),yy)
KBUILD_IMAGE := $(boot)/loader.bin
else
KBUILD_IMAGE := $(boot)/Image.gz
endif
-BOOT_TARGETS := Image Image.gz loader loader.bin
+endif
+BOOT_TARGETS := Image Image.gz loader loader.bin xipImage
all: $(notdir $(KBUILD_IMAGE))
diff --git a/arch/riscv/boot/Makefile b/arch/riscv/boot/Makefile
index 03404c84f971..6bf299f70c27 100644
--- a/arch/riscv/boot/Makefile
+++ b/arch/riscv/boot/Makefile
@@ -17,8 +17,21 @@
KCOV_INSTRUMENT := n
OBJCOPYFLAGS_Image :=-O binary -R .note -R .note.gnu.build-id -R .comment -S
+OBJCOPYFLAGS_xipImage :=-O binary -R .note -R .note.gnu.build-id -R .comment -S
targets := Image Image.* loader loader.o loader.lds loader.bin
+targets := Image Image.* loader loader.o loader.lds loader.bin xipImage
+
+ifeq ($(CONFIG_XIP_KERNEL),y)
+
+quiet_cmd_mkxip = $(quiet_cmd_objcopy)
+cmd_mkxip = $(cmd_objcopy)
+
+$(obj)/xipImage: vmlinux FORCE
+ $(call if_changed,mkxip)
+ @$(kecho) ' Physical Address of xipImage: $(CONFIG_XIP_PHYS_ADDR)'
+
+endif
$(obj)/Image: vmlinux FORCE
$(call if_changed,objcopy)
diff --git a/arch/riscv/boot/dts/Makefile b/arch/riscv/boot/dts/Makefile
index 7ffd502e3e7b..fe996b88319e 100644
--- a/arch/riscv/boot/dts/Makefile
+++ b/arch/riscv/boot/dts/Makefile
@@ -1,5 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
subdir-y += sifive
subdir-$(CONFIG_SOC_CANAAN_K210_DTB_BUILTIN) += canaan
+subdir-y += microchip
obj-$(CONFIG_BUILTIN_DTB) := $(addsuffix /, $(subdir-y))
diff --git a/arch/riscv/boot/dts/microchip/Makefile b/arch/riscv/boot/dts/microchip/Makefile
new file mode 100644
index 000000000000..622b12771fd3
--- /dev/null
+++ b/arch/riscv/boot/dts/microchip/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0
+dtb-$(CONFIG_SOC_MICROCHIP_POLARFIRE) += microchip-mpfs-icicle-kit.dtb
diff --git a/arch/riscv/boot/dts/microchip/microchip-mpfs-icicle-kit.dts b/arch/riscv/boot/dts/microchip/microchip-mpfs-icicle-kit.dts
new file mode 100644
index 000000000000..ec79944065c9
--- /dev/null
+++ b/arch/riscv/boot/dts/microchip/microchip-mpfs-icicle-kit.dts
@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/* Copyright (c) 2020 Microchip Technology Inc */
+
+/dts-v1/;
+
+#include "microchip-mpfs.dtsi"
+
+/* Clock frequency (in Hz) of the rtcclk */
+#define RTCCLK_FREQ 1000000
+
+/ {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ model = "Microchip PolarFire-SoC Icicle Kit";
+ compatible = "microchip,mpfs-icicle-kit";
+
+ chosen {
+ stdout-path = &serial0;
+ };
+
+ cpus {
+ timebase-frequency = <RTCCLK_FREQ>;
+ };
+
+ memory@80000000 {
+ device_type = "memory";
+ reg = <0x0 0x80000000 0x0 0x40000000>;
+ clocks = <&clkcfg 26>;
+ };
+
+ soc {
+ };
+};
+
+&serial0 {
+ status = "okay";
+};
+
+&serial1 {
+ status = "okay";
+};
+
+&serial2 {
+ status = "okay";
+};
+
+&serial3 {
+ status = "okay";
+};
+
+&sdcard {
+ status = "okay";
+};
+
+&emac0 {
+ phy-mode = "sgmii";
+ phy-handle = <&phy0>;
+ phy0: ethernet-phy@8 {
+ reg = <8>;
+ ti,fifo-depth = <0x01>;
+ };
+};
+
+&emac1 {
+ status = "okay";
+ phy-mode = "sgmii";
+ phy-handle = <&phy1>;
+ phy1: ethernet-phy@9 {
+ reg = <9>;
+ ti,fifo-depth = <0x01>;
+ };
+};
diff --git a/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi b/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi
new file mode 100644
index 000000000000..b9819570a7d1
--- /dev/null
+++ b/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi
@@ -0,0 +1,329 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/* Copyright (c) 2020 Microchip Technology Inc */
+
+/dts-v1/;
+
+/ {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ model = "Microchip MPFS Icicle Kit";
+ compatible = "microchip,mpfs-icicle-kit";
+
+ chosen {
+ };
+
+ cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ cpu@0 {
+ clock-frequency = <0>;
+ compatible = "sifive,e51", "sifive,rocket0", "riscv";
+ device_type = "cpu";
+ i-cache-block-size = <64>;
+ i-cache-sets = <128>;
+ i-cache-size = <16384>;
+ reg = <0>;
+ riscv,isa = "rv64imac";
+ status = "disabled";
+
+ cpu0_intc: interrupt-controller {
+ #interrupt-cells = <1>;
+ compatible = "riscv,cpu-intc";
+ interrupt-controller;
+ };
+ };
+
+ cpu@1 {
+ clock-frequency = <0>;
+ compatible = "sifive,u54-mc", "sifive,rocket0", "riscv";
+ d-cache-block-size = <64>;
+ d-cache-sets = <64>;
+ d-cache-size = <32768>;
+ d-tlb-sets = <1>;
+ d-tlb-size = <32>;
+ device_type = "cpu";
+ i-cache-block-size = <64>;
+ i-cache-sets = <64>;
+ i-cache-size = <32768>;
+ i-tlb-sets = <1>;
+ i-tlb-size = <32>;
+ mmu-type = "riscv,sv39";
+ reg = <1>;
+ riscv,isa = "rv64imafdc";
+ tlb-split;
+ status = "okay";
+
+ cpu1_intc: interrupt-controller {
+ #interrupt-cells = <1>;
+ compatible = "riscv,cpu-intc";
+ interrupt-controller;
+ };
+ };
+
+ cpu@2 {
+ clock-frequency = <0>;
+ compatible = "sifive,u54-mc", "sifive,rocket0", "riscv";
+ d-cache-block-size = <64>;
+ d-cache-sets = <64>;
+ d-cache-size = <32768>;
+ d-tlb-sets = <1>;
+ d-tlb-size = <32>;
+ device_type = "cpu";
+ i-cache-block-size = <64>;
+ i-cache-sets = <64>;
+ i-cache-size = <32768>;
+ i-tlb-sets = <1>;
+ i-tlb-size = <32>;
+ mmu-type = "riscv,sv39";
+ reg = <2>;
+ riscv,isa = "rv64imafdc";
+ tlb-split;
+ status = "okay";
+
+ cpu2_intc: interrupt-controller {
+ #interrupt-cells = <1>;
+ compatible = "riscv,cpu-intc";
+ interrupt-controller;
+ };
+ };
+
+ cpu@3 {
+ clock-frequency = <0>;
+ compatible = "sifive,u54-mc", "sifive,rocket0", "riscv";
+ d-cache-block-size = <64>;
+ d-cache-sets = <64>;
+ d-cache-size = <32768>;
+ d-tlb-sets = <1>;
+ d-tlb-size = <32>;
+ device_type = "cpu";
+ i-cache-block-size = <64>;
+ i-cache-sets = <64>;
+ i-cache-size = <32768>;
+ i-tlb-sets = <1>;
+ i-tlb-size = <32>;
+ mmu-type = "riscv,sv39";
+ reg = <3>;
+ riscv,isa = "rv64imafdc";
+ tlb-split;
+ status = "okay";
+
+ cpu3_intc: interrupt-controller {
+ #interrupt-cells = <1>;
+ compatible = "riscv,cpu-intc";
+ interrupt-controller;
+ };
+ };
+
+ cpu@4 {
+ clock-frequency = <0>;
+ compatible = "sifive,u54-mc", "sifive,rocket0", "riscv";
+ d-cache-block-size = <64>;
+ d-cache-sets = <64>;
+ d-cache-size = <32768>;
+ d-tlb-sets = <1>;
+ d-tlb-size = <32>;
+ device_type = "cpu";
+ i-cache-block-size = <64>;
+ i-cache-sets = <64>;
+ i-cache-size = <32768>;
+ i-tlb-sets = <1>;
+ i-tlb-size = <32>;
+ mmu-type = "riscv,sv39";
+ reg = <4>;
+ riscv,isa = "rv64imafdc";
+ tlb-split;
+ status = "okay";
+ cpu4_intc: interrupt-controller {
+ #interrupt-cells = <1>;
+ compatible = "riscv,cpu-intc";
+ interrupt-controller;
+ };
+ };
+ };
+
+ soc {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ compatible = "simple-bus";
+ ranges;
+
+ cache-controller@2010000 {
+ compatible = "sifive,fu540-c000-ccache", "cache";
+ cache-block-size = <64>;
+ cache-level = <2>;
+ cache-sets = <1024>;
+ cache-size = <2097152>;
+ cache-unified;
+ interrupt-parent = <&plic>;
+ interrupts = <1 2 3>;
+ reg = <0x0 0x2010000 0x0 0x1000>;
+ };
+
+ clint@2000000 {
+ compatible = "sifive,clint0";
+ reg = <0x0 0x2000000 0x0 0xC000>;
+ interrupts-extended = <&cpu0_intc 3 &cpu0_intc 7
+ &cpu1_intc 3 &cpu1_intc 7
+ &cpu2_intc 3 &cpu2_intc 7
+ &cpu3_intc 3 &cpu3_intc 7
+ &cpu4_intc 3 &cpu4_intc 7>;
+ };
+
+ plic: interrupt-controller@c000000 {
+ #interrupt-cells = <1>;
+ compatible = "sifive,plic-1.0.0";
+ reg = <0x0 0xc000000 0x0 0x4000000>;
+ riscv,ndev = <186>;
+ interrupt-controller;
+ interrupts-extended = <&cpu0_intc 11
+ &cpu1_intc 11 &cpu1_intc 9
+ &cpu2_intc 11 &cpu2_intc 9
+ &cpu3_intc 11 &cpu3_intc 9
+ &cpu4_intc 11 &cpu4_intc 9>;
+ };
+
+ dma@3000000 {
+ compatible = "sifive,fu540-c000-pdma";
+ reg = <0x0 0x3000000 0x0 0x8000>;
+ interrupt-parent = <&plic>;
+ interrupts = <23 24 25 26 27 28 29 30>;
+ #dma-cells = <1>;
+ };
+
+ refclk: refclk {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <600000000>;
+ clock-output-names = "msspllclk";
+ };
+
+ clkcfg: clkcfg@20002000 {
+ compatible = "microchip,mpfs-clkcfg";
+ reg = <0x0 0x20002000 0x0 0x1000>;
+ reg-names = "mss_sysreg";
+ clocks = <&refclk>;
+ #clock-cells = <1>;
+ clock-output-names = "cpu", "axi", "ahb", "envm", /* 0-3 */
+ "mac0", "mac1", "mmc", "timer", /* 4-7 */
+ "mmuart0", "mmuart1", "mmuart2", "mmuart3", /* 8-11 */
+ "mmuart4", "spi0", "spi1", "i2c0", /* 12-15 */
+ "i2c1", "can0", "can1", "usb", /* 16-19 */
+ "rsvd", "rtc", "qspi", "gpio0", /* 20-23 */
+ "gpio1", "gpio2", "ddrc", "fic0", /* 24-27 */
+ "fic1", "fic2", "fic3", "athena", "cfm"; /* 28-32 */
+ };
+
+ serial0: serial@20000000 {
+ compatible = "ns16550a";
+ reg = <0x0 0x20000000 0x0 0x400>;
+ reg-io-width = <4>;
+ reg-shift = <2>;
+ interrupt-parent = <&plic>;
+ interrupts = <90>;
+ current-speed = <115200>;
+ clocks = <&clkcfg 8>;
+ status = "disabled";
+ };
+
+ serial1: serial@20100000 {
+ compatible = "ns16550a";
+ reg = <0x0 0x20100000 0x0 0x400>;
+ reg-io-width = <4>;
+ reg-shift = <2>;
+ interrupt-parent = <&plic>;
+ interrupts = <91>;
+ current-speed = <115200>;
+ clocks = <&clkcfg 9>;
+ status = "disabled";
+ };
+
+ serial2: serial@20102000 {
+ compatible = "ns16550a";
+ reg = <0x0 0x20102000 0x0 0x400>;
+ reg-io-width = <4>;
+ reg-shift = <2>;
+ interrupt-parent = <&plic>;
+ interrupts = <92>;
+ current-speed = <115200>;
+ clocks = <&clkcfg 10>;
+ status = "disabled";
+ };
+
+ serial3: serial@20104000 {
+ compatible = "ns16550a";
+ reg = <0x0 0x20104000 0x0 0x400>;
+ reg-io-width = <4>;
+ reg-shift = <2>;
+ interrupt-parent = <&plic>;
+ interrupts = <93>;
+ current-speed = <115200>;
+ clocks = <&clkcfg 11>;
+ status = "disabled";
+ };
+
+ emmc: mmc@20008000 {
+ compatible = "cdns,sd4hc";
+ reg = <0x0 0x20008000 0x0 0x1000>;
+ interrupt-parent = <&plic>;
+ interrupts = <88 89>;
+ pinctrl-names = "default";
+ clocks = <&clkcfg 6>;
+ bus-width = <4>;
+ cap-mmc-highspeed;
+ mmc-ddr-3_3v;
+ max-frequency = <200000000>;
+ non-removable;
+ no-sd;
+ no-sdio;
+ voltage-ranges = <3300 3300>;
+ status = "disabled";
+ };
+
+ sdcard: sdhc@20008000 {
+ compatible = "cdns,sd4hc";
+ reg = <0x0 0x20008000 0x0 0x1000>;
+ interrupt-parent = <&plic>;
+ interrupts = <88>;
+ pinctrl-names = "default";
+ clocks = <&clkcfg 6>;
+ bus-width = <4>;
+ disable-wp;
+ cap-sd-highspeed;
+ card-detect-delay = <200>;
+ sd-uhs-sdr12;
+ sd-uhs-sdr25;
+ sd-uhs-sdr50;
+ sd-uhs-sdr104;
+ max-frequency = <200000000>;
+ status = "disabled";
+ };
+
+ emac0: ethernet@20110000 {
+ compatible = "cdns,macb";
+ reg = <0x0 0x20110000 0x0 0x2000>;
+ interrupt-parent = <&plic>;
+ interrupts = <64 65 66 67>;
+ local-mac-address = [00 00 00 00 00 00];
+ clocks = <&clkcfg 4>, <&clkcfg 2>;
+ clock-names = "pclk", "hclk";
+ status = "disabled";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+
+ emac1: ethernet@20112000 {
+ compatible = "cdns,macb";
+ reg = <0x0 0x20112000 0x0 0x2000>;
+ interrupt-parent = <&plic>;
+ interrupts = <70 71 72 73>;
+ mac-address = [00 00 00 00 00 00];
+ clocks = <&clkcfg 5>, <&clkcfg 2>;
+ status = "disabled";
+ clock-names = "pclk", "hclk";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+
+ };
+};
diff --git a/arch/riscv/boot/dts/sifive/fu740-c000.dtsi b/arch/riscv/boot/dts/sifive/fu740-c000.dtsi
index eeb4f8c3e0e7..8eef82e4199f 100644
--- a/arch/riscv/boot/dts/sifive/fu740-c000.dtsi
+++ b/arch/riscv/boot/dts/sifive/fu740-c000.dtsi
@@ -159,6 +159,7 @@
reg = <0x0 0x10000000 0x0 0x1000>;
clocks = <&hfclk>, <&rtcclk>;
#clock-cells = <1>;
+ #reset-cells = <1>;
};
uart0: serial@10010000 {
compatible = "sifive,fu740-c000-uart", "sifive,uart0";
@@ -289,5 +290,37 @@
clocks = <&prci PRCI_CLK_PCLK>;
status = "disabled";
};
+ pcie@e00000000 {
+ compatible = "sifive,fu740-pcie";
+ #address-cells = <3>;
+ #size-cells = <2>;
+ #interrupt-cells = <1>;
+ reg = <0xe 0x00000000 0x0 0x80000000>,
+ <0xd 0xf0000000 0x0 0x10000000>,
+ <0x0 0x100d0000 0x0 0x1000>;
+ reg-names = "dbi", "config", "mgmt";
+ device_type = "pci";
+ dma-coherent;
+ bus-range = <0x0 0xff>;
+ ranges = <0x81000000 0x0 0x60080000 0x0 0x60080000 0x0 0x10000>, /* I/O */
+ <0x82000000 0x0 0x60090000 0x0 0x60090000 0x0 0xff70000>, /* mem */
+ <0x82000000 0x0 0x70000000 0x0 0x70000000 0x0 0x1000000>, /* mem */
+ <0xc3000000 0x20 0x00000000 0x20 0x00000000 0x20 0x00000000>; /* mem prefetchable */
+ num-lanes = <0x8>;
+ interrupts = <56>, <57>, <58>, <59>, <60>, <61>, <62>, <63>, <64>;
+ interrupt-names = "msi", "inta", "intb", "intc", "intd";
+ interrupt-parent = <&plic0>;
+ interrupt-map-mask = <0x0 0x0 0x0 0x7>;
+ interrupt-map = <0x0 0x0 0x0 0x1 &plic0 57>,
+ <0x0 0x0 0x0 0x2 &plic0 58>,
+ <0x0 0x0 0x0 0x3 &plic0 59>,
+ <0x0 0x0 0x0 0x4 &plic0 60>;
+ clock-names = "pcie_aux";
+ clocks = <&prci PRCI_CLK_PCIE_AUX>;
+ pwren-gpios = <&gpio 5 0>;
+ reset-gpios = <&gpio 8 0>;
+ resets = <&prci 4>;
+ status = "okay";
+ };
};
};
diff --git a/arch/riscv/boot/loader.lds.S b/arch/riscv/boot/loader.lds.S
index 47a5003c2e28..62d94696a19c 100644
--- a/arch/riscv/boot/loader.lds.S
+++ b/arch/riscv/boot/loader.lds.S
@@ -1,13 +1,14 @@
/* SPDX-License-Identifier: GPL-2.0 */
#include <asm/page.h>
+#include <asm/pgtable.h>
OUTPUT_ARCH(riscv)
ENTRY(_start)
SECTIONS
{
- . = PAGE_OFFSET;
+ . = KERNEL_LINK_ADDR;
.payload : {
*(.payload)
diff --git a/arch/riscv/configs/defconfig b/arch/riscv/configs/defconfig
index 6c0625aa96c7..1f2be234b11c 100644
--- a/arch/riscv/configs/defconfig
+++ b/arch/riscv/configs/defconfig
@@ -16,6 +16,7 @@ CONFIG_EXPERT=y
CONFIG_BPF_SYSCALL=y
CONFIG_SOC_SIFIVE=y
CONFIG_SOC_VIRT=y
+CONFIG_SOC_MICROCHIP_POLARFIRE=y
CONFIG_SMP=y
CONFIG_HOTPLUG_CPU=y
CONFIG_JUMP_LABEL=y
@@ -82,6 +83,9 @@ CONFIG_USB_OHCI_HCD=y
CONFIG_USB_OHCI_HCD_PLATFORM=y
CONFIG_USB_STORAGE=y
CONFIG_USB_UAS=y
+CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_PLTFM=y
+CONFIG_MMC_SDHCI_CADENCE=y
CONFIG_MMC=y
CONFIG_MMC_SPI=y
CONFIG_RTC_CLASS=y
diff --git a/arch/riscv/errata/Makefile b/arch/riscv/errata/Makefile
new file mode 100644
index 000000000000..b8f8740a3e44
--- /dev/null
+++ b/arch/riscv/errata/Makefile
@@ -0,0 +1,2 @@
+obj-y += alternative.o
+obj-$(CONFIG_ERRATA_SIFIVE) += sifive/
diff --git a/arch/riscv/errata/alternative.c b/arch/riscv/errata/alternative.c
new file mode 100644
index 000000000000..3b15885db70b
--- /dev/null
+++ b/arch/riscv/errata/alternative.c
@@ -0,0 +1,74 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * alternative runtime patching
+ * inspired by the ARM64 and x86 version
+ *
+ * Copyright (C) 2021 Sifive.
+ */
+
+#include <linux/init.h>
+#include <linux/cpu.h>
+#include <linux/uaccess.h>
+#include <asm/alternative.h>
+#include <asm/sections.h>
+#include <asm/vendorid_list.h>
+#include <asm/sbi.h>
+#include <asm/csr.h>
+
+static struct cpu_manufacturer_info_t {
+ unsigned long vendor_id;
+ unsigned long arch_id;
+ unsigned long imp_id;
+} cpu_mfr_info;
+
+static void (*vendor_patch_func)(struct alt_entry *begin, struct alt_entry *end,
+ unsigned long archid, unsigned long impid);
+
+static inline void __init riscv_fill_cpu_mfr_info(void)
+{
+#ifdef CONFIG_RISCV_M_MODE
+ cpu_mfr_info.vendor_id = csr_read(CSR_MVENDORID);
+ cpu_mfr_info.arch_id = csr_read(CSR_MARCHID);
+ cpu_mfr_info.imp_id = csr_read(CSR_MIMPID);
+#else
+ cpu_mfr_info.vendor_id = sbi_get_mvendorid();
+ cpu_mfr_info.arch_id = sbi_get_marchid();
+ cpu_mfr_info.imp_id = sbi_get_mimpid();
+#endif
+}
+
+static void __init init_alternative(void)
+{
+ riscv_fill_cpu_mfr_info();
+
+ switch (cpu_mfr_info.vendor_id) {
+#ifdef CONFIG_ERRATA_SIFIVE
+ case SIFIVE_VENDOR_ID:
+ vendor_patch_func = sifive_errata_patch_func;
+ break;
+#endif
+ default:
+ vendor_patch_func = NULL;
+ }
+}
+
+/*
+ * This is called very early in the boot process (directly after we run
+ * a feature detect on the boot CPU). No need to worry about other CPUs
+ * here.
+ */
+void __init apply_boot_alternatives(void)
+{
+ /* If called on non-boot cpu things could go wrong */
+ WARN_ON(smp_processor_id() != 0);
+
+ init_alternative();
+
+ if (!vendor_patch_func)
+ return;
+
+ vendor_patch_func((struct alt_entry *)__alt_start,
+ (struct alt_entry *)__alt_end,
+ cpu_mfr_info.arch_id, cpu_mfr_info.imp_id);
+}
+
diff --git a/arch/riscv/errata/sifive/Makefile b/arch/riscv/errata/sifive/Makefile
new file mode 100644
index 000000000000..bdd5fc843b8e
--- /dev/null
+++ b/arch/riscv/errata/sifive/Makefile
@@ -0,0 +1,2 @@
+obj-y += errata_cip_453.o
+obj-y += errata.o
diff --git a/arch/riscv/errata/sifive/errata.c b/arch/riscv/errata/sifive/errata.c
new file mode 100644
index 000000000000..f5e5ae70e829
--- /dev/null
+++ b/arch/riscv/errata/sifive/errata.c
@@ -0,0 +1,106 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2021 Sifive.
+ */
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/bug.h>
+#include <asm/patch.h>
+#include <asm/alternative.h>
+#include <asm/vendorid_list.h>
+#include <asm/errata_list.h>
+
+struct errata_info_t {
+ char name[ERRATA_STRING_LENGTH_MAX];
+ bool (*check_func)(unsigned long arch_id, unsigned long impid);
+};
+
+static bool errata_cip_453_check_func(unsigned long arch_id, unsigned long impid)
+{
+ /*
+ * Affected cores:
+ * Architecture ID: 0x8000000000000007
+ * Implement ID: 0x20181004 <= impid <= 0x20191105
+ */
+ if (arch_id != 0x8000000000000007 ||
+ (impid < 0x20181004 || impid > 0x20191105))
+ return false;
+ return true;
+}
+
+static bool errata_cip_1200_check_func(unsigned long arch_id, unsigned long impid)
+{
+ /*
+ * Affected cores:
+ * Architecture ID: 0x8000000000000007 or 0x1
+ * Implement ID: mimpid[23:0] <= 0x200630 and mimpid != 0x01200626
+ */
+ if (arch_id != 0x8000000000000007 && arch_id != 0x1)
+ return false;
+ if ((impid & 0xffffff) > 0x200630 || impid == 0x1200626)
+ return false;
+ return true;
+}
+
+static struct errata_info_t errata_list[ERRATA_SIFIVE_NUMBER] = {
+ {
+ .name = "cip-453",
+ .check_func = errata_cip_453_check_func
+ },
+ {
+ .name = "cip-1200",
+ .check_func = errata_cip_1200_check_func
+ },
+};
+
+static u32 __init sifive_errata_probe(unsigned long archid, unsigned long impid)
+{
+ int idx;
+ u32 cpu_req_errata = 0;
+
+ for (idx = 0; idx < ERRATA_SIFIVE_NUMBER; idx++)
+ if (errata_list[idx].check_func(archid, impid))
+ cpu_req_errata |= (1U << idx);
+
+ return cpu_req_errata;
+}
+
+static void __init warn_miss_errata(u32 miss_errata)
+{
+ int i;
+
+ pr_warn("----------------------------------------------------------------\n");
+ pr_warn("WARNING: Missing the following errata may cause potential issues\n");
+ for (i = 0; i < ERRATA_SIFIVE_NUMBER; i++)
+ if (miss_errata & 0x1 << i)
+ pr_warn("\tSiFive Errata[%d]:%s\n", i, errata_list[i].name);
+ pr_warn("Please enable the corresponding Kconfig to apply them\n");
+ pr_warn("----------------------------------------------------------------\n");
+}
+
+void __init sifive_errata_patch_func(struct alt_entry *begin, struct alt_entry *end,
+ unsigned long archid, unsigned long impid)
+{
+ struct alt_entry *alt;
+ u32 cpu_req_errata = sifive_errata_probe(archid, impid);
+ u32 cpu_apply_errata = 0;
+ u32 tmp;
+
+ for (alt = begin; alt < end; alt++) {
+ if (alt->vendor_id != SIFIVE_VENDOR_ID)
+ continue;
+ if (alt->errata_id >= ERRATA_SIFIVE_NUMBER) {
+ WARN(1, "This errata id:%d is not in kernel errata list", alt->errata_id);
+ continue;
+ }
+
+ tmp = (1U << alt->errata_id);
+ if (cpu_req_errata & tmp) {
+ patch_text_nosync(alt->old_ptr, alt->alt_ptr, alt->alt_len);
+ cpu_apply_errata |= tmp;
+ }
+ }
+ if (cpu_apply_errata != cpu_req_errata)
+ warn_miss_errata(cpu_req_errata - cpu_apply_errata);
+}
diff --git a/arch/riscv/errata/sifive/errata_cip_453.S b/arch/riscv/errata/sifive/errata_cip_453.S
new file mode 100644
index 000000000000..f1b9623fe1de
--- /dev/null
+++ b/arch/riscv/errata/sifive/errata_cip_453.S
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2021 SiFive
+ */
+
+#include <linux/linkage.h>
+#include <asm/asm.h>
+#include <asm/asm-offsets.h>
+#include <asm/alternative.h>
+
+.macro ADD_SIGN_EXT pt_reg badaddr tmp_reg
+ REG_L \badaddr, PT_BADADDR(\pt_reg)
+ li \tmp_reg,1
+ slli \tmp_reg,\tmp_reg,0x26
+ and \tmp_reg,\tmp_reg,\badaddr
+ beqz \tmp_reg, 1f
+ li \tmp_reg,-1
+ slli \tmp_reg,\tmp_reg,0x27
+ or \badaddr,\tmp_reg,\badaddr
+ REG_S \badaddr, PT_BADADDR(\pt_reg)
+1:
+.endm
+
+ENTRY(sifive_cip_453_page_fault_trp)
+ ADD_SIGN_EXT a0, t0, t1
+#ifdef CONFIG_MMU
+ la t0, do_page_fault
+#else
+ la t0, do_trap_unknown
+#endif
+ jr t0
+END(sifive_cip_453_page_fault_trp)
+
+ENTRY(sifive_cip_453_insn_fault_trp)
+ ADD_SIGN_EXT a0, t0, t1
+ la t0, do_trap_insn_fault
+ jr t0
+END(sifive_cip_453_insn_fault_trp)
diff --git a/arch/riscv/include/asm/alternative-macros.h b/arch/riscv/include/asm/alternative-macros.h
new file mode 100644
index 000000000000..88c08705f64a
--- /dev/null
+++ b/arch/riscv/include/asm/alternative-macros.h
@@ -0,0 +1,142 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_ALTERNATIVE_MACROS_H
+#define __ASM_ALTERNATIVE_MACROS_H
+
+#ifdef CONFIG_RISCV_ERRATA_ALTERNATIVE
+
+#ifdef __ASSEMBLY__
+
+.macro ALT_ENTRY oldptr newptr vendor_id errata_id new_len
+ RISCV_PTR \oldptr
+ RISCV_PTR \newptr
+ REG_ASM \vendor_id
+ REG_ASM \new_len
+ .word \errata_id
+.endm
+
+.macro ALT_NEW_CONTENT vendor_id, errata_id, enable = 1, new_c : vararg
+ .if \enable
+ .pushsection .alternative, "a"
+ ALT_ENTRY 886b, 888f, \vendor_id, \errata_id, 889f - 888f
+ .popsection
+ .subsection 1
+888 :
+ \new_c
+889 :
+ .previous
+ .org . - (889b - 888b) + (887b - 886b)
+ .org . - (887b - 886b) + (889b - 888b)
+ .endif
+.endm
+
+.macro __ALTERNATIVE_CFG old_c, new_c, vendor_id, errata_id, enable
+886 :
+ \old_c
+887 :
+ ALT_NEW_CONTENT \vendor_id, \errata_id, \enable, \new_c
+.endm
+
+#define _ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, CONFIG_k) \
+ __ALTERNATIVE_CFG old_c, new_c, vendor_id, errata_id, IS_ENABLED(CONFIG_k)
+
+#else /* !__ASSEMBLY__ */
+
+#include <asm/asm.h>
+#include <linux/stringify.h>
+
+#define ALT_ENTRY(oldptr, newptr, vendor_id, errata_id, newlen) \
+ RISCV_PTR " " oldptr "\n" \
+ RISCV_PTR " " newptr "\n" \
+ REG_ASM " " vendor_id "\n" \
+ REG_ASM " " newlen "\n" \
+ ".word " errata_id "\n"
+
+#define ALT_NEW_CONSTENT(vendor_id, errata_id, enable, new_c) \
+ ".if " __stringify(enable) " == 1\n" \
+ ".pushsection .alternative, \"a\"\n" \
+ ALT_ENTRY("886b", "888f", __stringify(vendor_id), __stringify(errata_id), "889f - 888f") \
+ ".popsection\n" \
+ ".subsection 1\n" \
+ "888 :\n" \
+ new_c "\n" \
+ "889 :\n" \
+ ".previous\n" \
+ ".org . - (887b - 886b) + (889b - 888b)\n" \
+ ".org . - (889b - 888b) + (887b - 886b)\n" \
+ ".endif\n"
+
+#define __ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, enable) \
+ "886 :\n" \
+ old_c "\n" \
+ "887 :\n" \
+ ALT_NEW_CONSTENT(vendor_id, errata_id, enable, new_c)
+
+#define _ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, CONFIG_k) \
+ __ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, IS_ENABLED(CONFIG_k))
+
+#endif /* __ASSEMBLY__ */
+
+#else /* !CONFIG_RISCV_ERRATA_ALTERNATIVE*/
+#ifdef __ASSEMBLY__
+
+.macro __ALTERNATIVE_CFG old_c
+ \old_c
+.endm
+
+#define _ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, CONFIG_k) \
+ __ALTERNATIVE_CFG old_c
+
+#else /* !__ASSEMBLY__ */
+
+#define __ALTERNATIVE_CFG(old_c) \
+ old_c "\n"
+
+#define _ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, CONFIG_k) \
+ __ALTERNATIVE_CFG(old_c)
+
+#endif /* __ASSEMBLY__ */
+#endif /* CONFIG_RISCV_ERRATA_ALTERNATIVE */
+/*
+ * Usage:
+ * ALTERNATIVE(old_content, new_content, vendor_id, errata_id, CONFIG_k)
+ * in the assembly code. Otherwise,
+ * asm(ALTERNATIVE(old_content, new_content, vendor_id, errata_id, CONFIG_k));
+ *
+ * old_content: The old content which is probably replaced with new content.
+ * new_content: The new content.
+ * vendor_id: The CPU vendor ID.
+ * errata_id: The errata ID.
+ * CONFIG_k: The Kconfig of this errata. When Kconfig is disabled, the old
+ * content will alwyas be executed.
+ */
+#define ALTERNATIVE(old_content, new_content, vendor_id, errata_id, CONFIG_k) \
+ _ALTERNATIVE_CFG(old_content, new_content, vendor_id, errata_id, CONFIG_k)
+
+/*
+ * A vendor wants to replace an old_content, but another vendor has used
+ * ALTERNATIVE() to patch its customized content at the same location. In
+ * this case, this vendor can create a new macro ALTERNATIVE_2() based
+ * on the following sample code and then replace ALTERNATIVE() with
+ * ALTERNATIVE_2() to append its customized content.
+ *
+ * .macro __ALTERNATIVE_CFG_2 old_c, new_c_1, vendor_id_1, errata_id_1, enable_1, \
+ * new_c_2, vendor_id_2, errata_id_2, enable_2
+ * 886 :
+ * \old_c
+ * 887 :
+ * ALT_NEW_CONTENT \vendor_id_1, \errata_id_1, \enable_1, \new_c_1
+ * ALT_NEW_CONTENT \vendor_id_2, \errata_id_2, \enable_2, \new_c_2
+ * .endm
+ *
+ * #define _ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, errata_id_1, CONFIG_k_1, \
+ * new_c_2, vendor_id_2, errata_id_2, CONFIG_k_2) \
+ * __ALTERNATIVE_CFG_2 old_c, new_c_1, vendor_id_1, errata_id_1, IS_ENABLED(CONFIG_k_1), \
+ * new_c_2, vendor_id_2, errata_id_2, IS_ENABLED(CONFIG_k_2) \
+ *
+ * #define ALTERNATIVE_2(old_content, new_content_1, vendor_id_1, errata_id_1, CONFIG_k_1, \
+ * new_content_2, vendor_id_2, errata_id_2, CONFIG_k_2) \
+ * _ALTERNATIVE_CFG_2(old_content, new_content_1, vendor_id_1, errata_id_1, CONFIG_k_1, \
+ * new_content_2, vendor_id_2, errata_id_2, CONFIG_k_2)
+ *
+ */
+#endif
diff --git a/arch/riscv/include/asm/alternative.h b/arch/riscv/include/asm/alternative.h
new file mode 100644
index 000000000000..e625d3cafbed
--- /dev/null
+++ b/arch/riscv/include/asm/alternative.h
@@ -0,0 +1,39 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2021 Sifive.
+ */
+
+#ifndef __ASM_ALTERNATIVE_H
+#define __ASM_ALTERNATIVE_H
+
+#define ERRATA_STRING_LENGTH_MAX 32
+
+#include <asm/alternative-macros.h>
+
+#ifndef __ASSEMBLY__
+
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/stddef.h>
+#include <asm/hwcap.h>
+
+void __init apply_boot_alternatives(void);
+
+struct alt_entry {
+ void *old_ptr; /* address of original instruciton or data */
+ void *alt_ptr; /* address of replacement instruction or data */
+ unsigned long vendor_id; /* cpu vendor id */
+ unsigned long alt_len; /* The replacement size */
+ unsigned int errata_id; /* The errata id */
+} __packed;
+
+struct errata_checkfunc_id {
+ unsigned long vendor_id;
+ bool (*func)(struct alt_entry *alt);
+};
+
+void sifive_errata_patch_func(struct alt_entry *begin, struct alt_entry *end,
+ unsigned long archid, unsigned long impid);
+
+#endif
+#endif
diff --git a/arch/riscv/include/asm/asm.h b/arch/riscv/include/asm/asm.h
index 9c992a88d858..618d7c5af1a2 100644
--- a/arch/riscv/include/asm/asm.h
+++ b/arch/riscv/include/asm/asm.h
@@ -23,6 +23,7 @@
#define REG_L __REG_SEL(ld, lw)
#define REG_S __REG_SEL(sd, sw)
#define REG_SC __REG_SEL(sc.d, sc.w)
+#define REG_ASM __REG_SEL(.dword, .word)
#define SZREG __REG_SEL(8, 4)
#define LGREG __REG_SEL(3, 2)
diff --git a/arch/riscv/include/asm/csr.h b/arch/riscv/include/asm/csr.h
index caadfc1d7487..87ac65696871 100644
--- a/arch/riscv/include/asm/csr.h
+++ b/arch/riscv/include/asm/csr.h
@@ -115,6 +115,9 @@
#define CSR_MIP 0x344
#define CSR_PMPCFG0 0x3a0
#define CSR_PMPADDR0 0x3b0
+#define CSR_MVENDORID 0xf11
+#define CSR_MARCHID 0xf12
+#define CSR_MIMPID 0xf13
#define CSR_MHARTID 0xf14
#ifdef CONFIG_RISCV_M_MODE
diff --git a/arch/riscv/include/asm/elf.h b/arch/riscv/include/asm/elf.h
index 5c725e1df58b..f4b490cd0e5d 100644
--- a/arch/riscv/include/asm/elf.h
+++ b/arch/riscv/include/asm/elf.h
@@ -81,4 +81,10 @@ extern int arch_setup_additional_pages(struct linux_binprm *bprm,
int uses_interp);
#endif /* CONFIG_MMU */
+#define ELF_CORE_COPY_REGS(dest, regs) \
+do { \
+ *(struct user_regs_struct *)&(dest) = \
+ *(struct user_regs_struct *)regs; \
+} while (0);
+
#endif /* _ASM_RISCV_ELF_H */
diff --git a/arch/riscv/include/asm/errata_list.h b/arch/riscv/include/asm/errata_list.h
new file mode 100644
index 000000000000..5f1046e82d9f
--- /dev/null
+++ b/arch/riscv/include/asm/errata_list.h
@@ -0,0 +1,39 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2021 Sifive.
+ */
+#ifndef ASM_ERRATA_LIST_H
+#define ASM_ERRATA_LIST_H
+
+#include <asm/alternative.h>
+#include <asm/vendorid_list.h>
+
+#ifdef CONFIG_ERRATA_SIFIVE
+#define ERRATA_SIFIVE_CIP_453 0
+#define ERRATA_SIFIVE_CIP_1200 1
+#define ERRATA_SIFIVE_NUMBER 2
+#endif
+
+#ifdef __ASSEMBLY__
+
+#define ALT_INSN_FAULT(x) \
+ALTERNATIVE(__stringify(RISCV_PTR do_trap_insn_fault), \
+ __stringify(RISCV_PTR sifive_cip_453_insn_fault_trp), \
+ SIFIVE_VENDOR_ID, ERRATA_SIFIVE_CIP_453, \
+ CONFIG_ERRATA_SIFIVE_CIP_453)
+
+#define ALT_PAGE_FAULT(x) \
+ALTERNATIVE(__stringify(RISCV_PTR do_page_fault), \
+ __stringify(RISCV_PTR sifive_cip_453_page_fault_trp), \
+ SIFIVE_VENDOR_ID, ERRATA_SIFIVE_CIP_453, \
+ CONFIG_ERRATA_SIFIVE_CIP_453)
+#else /* !__ASSEMBLY__ */
+
+#define ALT_FLUSH_TLB_PAGE(x) \
+asm(ALTERNATIVE("sfence.vma %0", "sfence.vma", SIFIVE_VENDOR_ID, \
+ ERRATA_SIFIVE_CIP_1200, CONFIG_ERRATA_SIFIVE_CIP_1200) \
+ : : "r" (addr) : "memory")
+
+#endif /* __ASSEMBLY__ */
+
+#endif
diff --git a/arch/riscv/include/asm/ftrace.h b/arch/riscv/include/asm/ftrace.h
index 845002cc2e57..04dad3380041 100644
--- a/arch/riscv/include/asm/ftrace.h
+++ b/arch/riscv/include/asm/ftrace.h
@@ -13,9 +13,19 @@
#endif
#define HAVE_FUNCTION_GRAPH_RET_ADDR_PTR
+/*
+ * Clang prior to 13 had "mcount" instead of "_mcount":
+ * https://reviews.llvm.org/D98881
+ */
+#if defined(CONFIG_CC_IS_GCC) || CONFIG_CLANG_VERSION >= 130000
+#define MCOUNT_NAME _mcount
+#else
+#define MCOUNT_NAME mcount
+#endif
+
#define ARCH_SUPPORTS_FTRACE_OPS 1
#ifndef __ASSEMBLY__
-void _mcount(void);
+void MCOUNT_NAME(void);
static inline unsigned long ftrace_call_adjust(unsigned long addr)
{
return addr;
@@ -36,7 +46,7 @@ struct dyn_arch_ftrace {
* both auipc and jalr at the same time.
*/
-#define MCOUNT_ADDR ((unsigned long)_mcount)
+#define MCOUNT_ADDR ((unsigned long)MCOUNT_NAME)
#define JALR_SIGN_MASK (0x00000800)
#define JALR_OFFSET_MASK (0x00000fff)
#define AUIPC_OFFSET_MASK (0xfffff000)
diff --git a/arch/riscv/include/asm/kexec.h b/arch/riscv/include/asm/kexec.h
new file mode 100644
index 000000000000..1e954101906a
--- /dev/null
+++ b/arch/riscv/include/asm/kexec.h
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2019 FORTH-ICS/CARV
+ * Nick Kossifidis <mick@ics.forth.gr>
+ */
+
+#ifndef _RISCV_KEXEC_H
+#define _RISCV_KEXEC_H
+
+#include <asm/page.h> /* For PAGE_SIZE */
+
+/* Maximum physical address we can use pages from */
+#define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
+
+/* Maximum address we can reach in physical address mode */
+#define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
+
+/* Maximum address we can use for the control code buffer */
+#define KEXEC_CONTROL_MEMORY_LIMIT (-1UL)
+
+/* Reserve a page for the control code buffer */
+#define KEXEC_CONTROL_PAGE_SIZE PAGE_SIZE
+
+#define KEXEC_ARCH KEXEC_ARCH_RISCV
+
+extern void riscv_crash_save_regs(struct pt_regs *newregs);
+
+static inline void
+crash_setup_regs(struct pt_regs *newregs,
+ struct pt_regs *oldregs)
+{
+ if (oldregs)
+ memcpy(newregs, oldregs, sizeof(struct pt_regs));
+ else
+ riscv_crash_save_regs(newregs);
+}
+
+
+#define ARCH_HAS_KIMAGE_ARCH
+
+struct kimage_arch {
+ unsigned long fdt_addr;
+};
+
+const extern unsigned char riscv_kexec_relocate[];
+const extern unsigned int riscv_kexec_relocate_size;
+
+typedef void (*riscv_kexec_method)(unsigned long first_ind_entry,
+ unsigned long jump_addr,
+ unsigned long fdt_addr,
+ unsigned long hartid,
+ unsigned long va_pa_off);
+
+extern riscv_kexec_method riscv_kexec_norelocate;
+
+#endif
diff --git a/arch/riscv/include/asm/page.h b/arch/riscv/include/asm/page.h
index adc9d26f3d75..6a7761c86ec2 100644
--- a/arch/riscv/include/asm/page.h
+++ b/arch/riscv/include/asm/page.h
@@ -90,15 +90,58 @@ typedef struct page *pgtable_t;
#ifdef CONFIG_MMU
extern unsigned long va_pa_offset;
+#ifdef CONFIG_64BIT
+extern unsigned long va_kernel_pa_offset;
+#endif
+#ifdef CONFIG_XIP_KERNEL
+extern unsigned long va_kernel_xip_pa_offset;
+#endif
extern unsigned long pfn_base;
#define ARCH_PFN_OFFSET (pfn_base)
#else
#define va_pa_offset 0
+#ifdef CONFIG_64BIT
+#define va_kernel_pa_offset 0
+#endif
#define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT)
#endif /* CONFIG_MMU */
-#define __pa_to_va_nodebug(x) ((void *)((unsigned long) (x) + va_pa_offset))
-#define __va_to_pa_nodebug(x) ((unsigned long)(x) - va_pa_offset)
+extern unsigned long kernel_virt_addr;
+
+#ifdef CONFIG_64BIT
+#define linear_mapping_pa_to_va(x) ((void *)((unsigned long)(x) + va_pa_offset))
+#ifdef CONFIG_XIP_KERNEL
+#define kernel_mapping_pa_to_va(y) ({ \
+ unsigned long _y = y; \
+ (_y >= CONFIG_PHYS_RAM_BASE) ? \
+ (void *)((unsigned long)(_y) + va_kernel_pa_offset + XIP_OFFSET) : \
+ (void *)((unsigned long)(_y) + va_kernel_xip_pa_offset); \
+ })
+#else
+#define kernel_mapping_pa_to_va(x) ((void *)((unsigned long)(x) + va_kernel_pa_offset))
+#endif
+#define __pa_to_va_nodebug(x) linear_mapping_pa_to_va(x)
+
+#define linear_mapping_va_to_pa(x) ((unsigned long)(x) - va_pa_offset)
+#ifdef CONFIG_XIP_KERNEL
+#define kernel_mapping_va_to_pa(y) ({ \
+ unsigned long _y = y; \
+ (_y < kernel_virt_addr + XIP_OFFSET) ? \
+ ((unsigned long)(_y) - va_kernel_xip_pa_offset) : \
+ ((unsigned long)(_y) - va_kernel_pa_offset - XIP_OFFSET); \
+ })
+#else
+#define kernel_mapping_va_to_pa(x) ((unsigned long)(x) - va_kernel_pa_offset)
+#endif
+#define __va_to_pa_nodebug(x) ({ \
+ unsigned long _x = x; \
+ (_x < kernel_virt_addr) ? \
+ linear_mapping_va_to_pa(_x) : kernel_mapping_va_to_pa(_x); \
+ })
+#else
+#define __pa_to_va_nodebug(x) ((void *)((unsigned long) (x) + va_pa_offset))
+#define __va_to_pa_nodebug(x) ((unsigned long)(x) - va_pa_offset)
+#endif
#ifdef CONFIG_DEBUG_VIRTUAL
extern phys_addr_t __virt_to_phys(unsigned long x);
diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h
index ebf817c1bdf4..9469f464e71a 100644
--- a/arch/riscv/include/asm/pgtable.h
+++ b/arch/riscv/include/asm/pgtable.h
@@ -11,23 +11,38 @@
#include <asm/pgtable-bits.h>
-#ifndef __ASSEMBLY__
+#ifndef CONFIG_MMU
+#define KERNEL_LINK_ADDR PAGE_OFFSET
+#else
-/* Page Upper Directory not used in RISC-V */
-#include <asm-generic/pgtable-nopud.h>
-#include <asm/page.h>
-#include <asm/tlbflush.h>
-#include <linux/mm_types.h>
+#define ADDRESS_SPACE_END (UL(-1))
-#ifdef CONFIG_MMU
+#ifdef CONFIG_64BIT
+/* Leave 2GB for kernel and BPF at the end of the address space */
+#define KERNEL_LINK_ADDR (ADDRESS_SPACE_END - SZ_2G + 1)
+#else
+#define KERNEL_LINK_ADDR PAGE_OFFSET
+#endif
#define VMALLOC_SIZE (KERN_VIRT_SIZE >> 1)
#define VMALLOC_END (PAGE_OFFSET - 1)
#define VMALLOC_START (PAGE_OFFSET - VMALLOC_SIZE)
#define BPF_JIT_REGION_SIZE (SZ_128M)
+#ifdef CONFIG_64BIT
+/* KASLR should leave at least 128MB for BPF after the kernel */
+#define BPF_JIT_REGION_START PFN_ALIGN((unsigned long)&_end)
+#define BPF_JIT_REGION_END (BPF_JIT_REGION_START + BPF_JIT_REGION_SIZE)
+#else
#define BPF_JIT_REGION_START (PAGE_OFFSET - BPF_JIT_REGION_SIZE)
#define BPF_JIT_REGION_END (VMALLOC_END)
+#endif
+
+/* Modules always live before the kernel */
+#ifdef CONFIG_64BIT
+#define MODULES_VADDR (PFN_ALIGN((unsigned long)&_end) - SZ_2G)
+#define MODULES_END (PFN_ALIGN((unsigned long)&_start))
+#endif
/*
* Roughly size the vmemmap space to be large enough to fit enough
@@ -60,12 +75,35 @@
#endif
+#ifdef CONFIG_XIP_KERNEL
+#define XIP_OFFSET SZ_8M
+#endif
+
+#ifndef __ASSEMBLY__
+
+/* Page Upper Directory not used in RISC-V */
+#include <asm-generic/pgtable-nopud.h>
+#include <asm/page.h>
+#include <asm/tlbflush.h>
+#include <linux/mm_types.h>
+
#ifdef CONFIG_64BIT
#include <asm/pgtable-64.h>
#else
#include <asm/pgtable-32.h>
#endif /* CONFIG_64BIT */
+#ifdef CONFIG_XIP_KERNEL
+#define XIP_FIXUP(addr) ({ \
+ uintptr_t __a = (uintptr_t)(addr); \
+ (__a >= CONFIG_XIP_PHYS_ADDR && __a < CONFIG_XIP_PHYS_ADDR + SZ_16M) ? \
+ __a - CONFIG_XIP_PHYS_ADDR + CONFIG_PHYS_RAM_BASE - XIP_OFFSET :\
+ __a; \
+ })
+#else
+#define XIP_FIXUP(addr) (addr)
+#endif /* CONFIG_XIP_KERNEL */
+
#ifdef CONFIG_MMU
/* Number of entries in the page global directory */
#define PTRS_PER_PGD (PAGE_SIZE / sizeof(pgd_t))
@@ -484,8 +522,17 @@ static inline int ptep_clear_flush_young(struct vm_area_struct *vma,
#define kern_addr_valid(addr) (1) /* FIXME */
-extern void *dtb_early_va;
-extern uintptr_t dtb_early_pa;
+extern char _start[];
+extern void *_dtb_early_va;
+extern uintptr_t _dtb_early_pa;
+#if defined(CONFIG_XIP_KERNEL) && defined(CONFIG_MMU)
+#define dtb_early_va (*(void **)XIP_FIXUP(&_dtb_early_va))
+#define dtb_early_pa (*(uintptr_t *)XIP_FIXUP(&_dtb_early_pa))
+#else
+#define dtb_early_va _dtb_early_va
+#define dtb_early_pa _dtb_early_pa
+#endif /* CONFIG_XIP_KERNEL */
+
void setup_bootmem(void);
void paging_init(void);
void misc_mem_init(void);
diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h
index d7027411dde8..0d42693cb65e 100644
--- a/arch/riscv/include/asm/sbi.h
+++ b/arch/riscv/include/asm/sbi.h
@@ -97,6 +97,9 @@ struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0,
void sbi_console_putchar(int ch);
int sbi_console_getchar(void);
+long sbi_get_mvendorid(void);
+long sbi_get_marchid(void);
+long sbi_get_mimpid(void);
void sbi_set_timer(uint64_t stime_value);
void sbi_shutdown(void);
void sbi_clear_ipi(void);
diff --git a/arch/riscv/include/asm/sections.h b/arch/riscv/include/asm/sections.h
index 1595c5b60cfd..8a303fb1ee3b 100644
--- a/arch/riscv/include/asm/sections.h
+++ b/arch/riscv/include/asm/sections.h
@@ -11,5 +11,6 @@ extern char _start[];
extern char _start_kernel[];
extern char __init_data_begin[], __init_data_end[];
extern char __init_text_begin[], __init_text_end[];
+extern char __alt_start[], __alt_end[];
#endif /* __ASM_SECTIONS_H */
diff --git a/arch/riscv/include/asm/set_memory.h b/arch/riscv/include/asm/set_memory.h
index 6887b3d9f371..a9c56776fa0e 100644
--- a/arch/riscv/include/asm/set_memory.h
+++ b/arch/riscv/include/asm/set_memory.h
@@ -17,6 +17,7 @@ int set_memory_x(unsigned long addr, int numpages);
int set_memory_nx(unsigned long addr, int numpages);
int set_memory_rw_nx(unsigned long addr, int numpages);
void protect_kernel_text_data(void);
+void protect_kernel_linear_mapping_text_rodata(void);
#else
static inline int set_memory_ro(unsigned long addr, int numpages) { return 0; }
static inline int set_memory_rw(unsigned long addr, int numpages) { return 0; }
diff --git a/arch/riscv/include/asm/smp.h b/arch/riscv/include/asm/smp.h
index df1f7c4cd433..a7d2811f3536 100644
--- a/arch/riscv/include/asm/smp.h
+++ b/arch/riscv/include/asm/smp.h
@@ -46,7 +46,7 @@ int riscv_hartid_to_cpuid(int hartid);
void riscv_cpuid_to_hartid_mask(const struct cpumask *in, struct cpumask *out);
/* Set custom IPI operations */
-void riscv_set_ipi_ops(struct riscv_ipi_ops *ops);
+void riscv_set_ipi_ops(const struct riscv_ipi_ops *ops);
/* Clear IPI for current CPU */
void riscv_clear_ipi(void);
@@ -92,7 +92,7 @@ static inline void riscv_cpuid_to_hartid_mask(const struct cpumask *in,
cpumask_set_cpu(boot_cpu_hartid, out);
}
-static inline void riscv_set_ipi_ops(struct riscv_ipi_ops *ops)
+static inline void riscv_set_ipi_ops(const struct riscv_ipi_ops *ops)
{
}
diff --git a/arch/riscv/include/asm/string.h b/arch/riscv/include/asm/string.h
index 5477e7ecb6e1..909049366555 100644
--- a/arch/riscv/include/asm/string.h
+++ b/arch/riscv/include/asm/string.h
@@ -23,5 +23,10 @@ extern asmlinkage void *__memmove(void *, const void *, size_t);
#define memcpy(dst, src, len) __memcpy(dst, src, len)
#define memset(s, c, n) __memset(s, c, n)
#define memmove(dst, src, len) __memmove(dst, src, len)
+
+#ifndef __NO_FORTIFY
+#define __NO_FORTIFY /* FORTIFY_SOURCE uses __builtin_memcpy, etc. */
+#endif
+
#endif
#endif /* _ASM_RISCV_STRING_H */
diff --git a/arch/riscv/include/asm/syscall.h b/arch/riscv/include/asm/syscall.h
index 49350c8bd7b0..b933b1583c9f 100644
--- a/arch/riscv/include/asm/syscall.h
+++ b/arch/riscv/include/asm/syscall.h
@@ -15,7 +15,7 @@
#include <linux/err.h>
/* The array of function pointers for syscalls. */
-extern void *sys_call_table[];
+extern void * const sys_call_table[];
/*
* Only the low 32 bits of orig_r0 are meaningful, so we return int.
diff --git a/arch/riscv/include/asm/tlbflush.h b/arch/riscv/include/asm/tlbflush.h
index 394cfbccdcd9..c84218ad7afc 100644
--- a/arch/riscv/include/asm/tlbflush.h
+++ b/arch/riscv/include/asm/tlbflush.h
@@ -9,6 +9,7 @@
#include <linux/mm_types.h>
#include <asm/smp.h>
+#include <asm/errata_list.h>
#ifdef CONFIG_MMU
static inline void local_flush_tlb_all(void)
@@ -19,7 +20,7 @@ static inline void local_flush_tlb_all(void)
/* Flush one page from local TLB */
static inline void local_flush_tlb_page(unsigned long addr)
{
- __asm__ __volatile__ ("sfence.vma %0" : : "r" (addr) : "memory");
+ ALT_FLUSH_TLB_PAGE(__asm__ __volatile__ ("sfence.vma %0" : : "r" (addr) : "memory"));
}
#else /* CONFIG_MMU */
#define local_flush_tlb_all() do { } while (0)
diff --git a/arch/riscv/include/asm/uaccess.h b/arch/riscv/include/asm/uaccess.h
index f944062c9d99..f314ff44c48d 100644
--- a/arch/riscv/include/asm/uaccess.h
+++ b/arch/riscv/include/asm/uaccess.h
@@ -375,7 +375,6 @@ raw_copy_to_user(void __user *to, const void *from, unsigned long n)
extern long strncpy_from_user(char *dest, const char __user *src, long count);
-extern long __must_check strlen_user(const char __user *str);
extern long __must_check strnlen_user(const char __user *str, long n);
extern
diff --git a/arch/riscv/include/asm/vendorid_list.h b/arch/riscv/include/asm/vendorid_list.h
new file mode 100644
index 000000000000..9d934215b3c8
--- /dev/null
+++ b/arch/riscv/include/asm/vendorid_list.h
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2021 SiFive
+ */
+#ifndef ASM_VENDOR_LIST_H
+#define ASM_VENDOR_LIST_H
+
+#define SIFIVE_VENDOR_ID 0x489
+
+#endif
diff --git a/arch/riscv/kernel/Makefile b/arch/riscv/kernel/Makefile
index 647a47f5484a..d3081e4d9600 100644
--- a/arch/riscv/kernel/Makefile
+++ b/arch/riscv/kernel/Makefile
@@ -10,6 +10,10 @@ CFLAGS_REMOVE_sbi.o = $(CC_FLAGS_FTRACE)
endif
CFLAGS_syscall_table.o += $(call cc-option,-Wno-override-init,)
+ifdef CONFIG_KEXEC
+AFLAGS_kexec_relocate.o := -mcmodel=medany -mno-relax
+endif
+
extra-y += head.o
extra-y += vmlinux.lds
@@ -55,6 +59,8 @@ obj-$(CONFIG_SMP) += cpu_ops_sbi.o
endif
obj-$(CONFIG_HOTPLUG_CPU) += cpu-hotplug.o
obj-$(CONFIG_KGDB) += kgdb.o
+obj-$(CONFIG_KEXEC) += kexec_relocate.o crash_save_regs.o machine_kexec.o
+obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
obj-$(CONFIG_JUMP_LABEL) += jump_label.o
diff --git a/arch/riscv/kernel/crash_dump.c b/arch/riscv/kernel/crash_dump.c
new file mode 100644
index 000000000000..86cc0ada5752
--- /dev/null
+++ b/arch/riscv/kernel/crash_dump.c
@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * This code comes from arch/arm64/kernel/crash_dump.c
+ * Created by: AKASHI Takahiro <takahiro.akashi@linaro.org>
+ * Copyright (C) 2017 Linaro Limited
+ */
+
+#include <linux/crash_dump.h>
+#include <linux/io.h>
+
+/**
+ * copy_oldmem_page() - copy one page from old kernel memory
+ * @pfn: page frame number to be copied
+ * @buf: buffer where the copied page is placed
+ * @csize: number of bytes to copy
+ * @offset: offset in bytes into the page
+ * @userbuf: if set, @buf is in a user address space
+ *
+ * This function copies one page from old kernel memory into buffer pointed by
+ * @buf. If @buf is in userspace, set @userbuf to %1. Returns number of bytes
+ * copied or negative error in case of failure.
+ */
+ssize_t copy_oldmem_page(unsigned long pfn, char *buf,
+ size_t csize, unsigned long offset,
+ int userbuf)
+{
+ void *vaddr;
+
+ if (!csize)
+ return 0;
+
+ vaddr = memremap(__pfn_to_phys(pfn), PAGE_SIZE, MEMREMAP_WB);
+ if (!vaddr)
+ return -ENOMEM;
+
+ if (userbuf) {
+ if (copy_to_user((char __user *)buf, vaddr + offset, csize)) {
+ memunmap(vaddr);
+ return -EFAULT;
+ }
+ } else
+ memcpy(buf, vaddr + offset, csize);
+
+ memunmap(vaddr);
+ return csize;
+}
diff --git a/arch/riscv/kernel/crash_save_regs.S b/arch/riscv/kernel/crash_save_regs.S
new file mode 100644
index 000000000000..7832fb763aba
--- /dev/null
+++ b/arch/riscv/kernel/crash_save_regs.S
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2020 FORTH-ICS/CARV
+ * Nick Kossifidis <mick@ics.forth.gr>
+ */
+
+#include <asm/asm.h> /* For RISCV_* and REG_* macros */
+#include <asm/csr.h> /* For CSR_* macros */
+#include <asm/asm-offsets.h> /* For offsets on pt_regs */
+#include <linux/linkage.h> /* For SYM_* macros */
+
+.section ".text"
+SYM_CODE_START(riscv_crash_save_regs)
+ REG_S ra, PT_RA(a0) /* x1 */
+ REG_S sp, PT_SP(a0) /* x2 */
+ REG_S gp, PT_GP(a0) /* x3 */
+ REG_S tp, PT_TP(a0) /* x4 */
+ REG_S t0, PT_T0(a0) /* x5 */
+ REG_S t1, PT_T1(a0) /* x6 */
+ REG_S t2, PT_T2(a0) /* x7 */
+ REG_S s0, PT_S0(a0) /* x8/fp */
+ REG_S s1, PT_S1(a0) /* x9 */
+ REG_S a0, PT_A0(a0) /* x10 */
+ REG_S a1, PT_A1(a0) /* x11 */
+ REG_S a2, PT_A2(a0) /* x12 */
+ REG_S a3, PT_A3(a0) /* x13 */
+ REG_S a4, PT_A4(a0) /* x14 */
+ REG_S a5, PT_A5(a0) /* x15 */
+ REG_S a6, PT_A6(a0) /* x16 */
+ REG_S a7, PT_A7(a0) /* x17 */
+ REG_S s2, PT_S2(a0) /* x18 */
+ REG_S s3, PT_S3(a0) /* x19 */
+ REG_S s4, PT_S4(a0) /* x20 */
+ REG_S s5, PT_S5(a0) /* x21 */
+ REG_S s6, PT_S6(a0) /* x22 */
+ REG_S s7, PT_S7(a0) /* x23 */
+ REG_S s8, PT_S8(a0) /* x24 */
+ REG_S s9, PT_S9(a0) /* x25 */
+ REG_S s10, PT_S10(a0) /* x26 */
+ REG_S s11, PT_S11(a0) /* x27 */
+ REG_S t3, PT_T3(a0) /* x28 */
+ REG_S t4, PT_T4(a0) /* x29 */
+ REG_S t5, PT_T5(a0) /* x30 */
+ REG_S t6, PT_T6(a0) /* x31 */
+
+ csrr t1, CSR_STATUS
+ csrr t2, CSR_EPC
+ csrr t3, CSR_TVAL
+ csrr t4, CSR_CAUSE
+
+ REG_S t1, PT_STATUS(a0)
+ REG_S t2, PT_EPC(a0)
+ REG_S t3, PT_BADADDR(a0)
+ REG_S t4, PT_CAUSE(a0)
+ ret
+SYM_CODE_END(riscv_crash_save_regs)
diff --git a/arch/riscv/kernel/entry.S b/arch/riscv/kernel/entry.S
index 83095faa680e..80d5a9e017b0 100644
--- a/arch/riscv/kernel/entry.S
+++ b/arch/riscv/kernel/entry.S
@@ -12,6 +12,7 @@
#include <asm/unistd.h>
#include <asm/thread_info.h>
#include <asm/asm-offsets.h>
+#include <asm/errata_list.h>
#if !IS_ENABLED(CONFIG_PREEMPTION)
.set resume_kernel, restore_all
@@ -454,7 +455,7 @@ ENDPROC(__switch_to)
/* Exception vector table */
ENTRY(excp_vect_table)
RISCV_PTR do_trap_insn_misaligned
- RISCV_PTR do_trap_insn_fault
+ ALT_INSN_FAULT(RISCV_PTR do_trap_insn_fault)
RISCV_PTR do_trap_insn_illegal
RISCV_PTR do_trap_break
RISCV_PTR do_trap_load_misaligned
@@ -465,7 +466,8 @@ ENTRY(excp_vect_table)
RISCV_PTR do_trap_ecall_s
RISCV_PTR do_trap_unknown
RISCV_PTR do_trap_ecall_m
- RISCV_PTR do_page_fault /* instruction page fault */
+ /* instruciton page fault */
+ ALT_PAGE_FAULT(RISCV_PTR do_page_fault)
RISCV_PTR do_page_fault /* load page fault */
RISCV_PTR do_trap_unknown
RISCV_PTR do_page_fault /* store page fault */
diff --git a/arch/riscv/kernel/head.S b/arch/riscv/kernel/head.S
index f5a9bad86e58..89cc58ab52b4 100644
--- a/arch/riscv/kernel/head.S
+++ b/arch/riscv/kernel/head.S
@@ -9,11 +9,23 @@
#include <linux/linkage.h>
#include <asm/thread_info.h>
#include <asm/page.h>
+#include <asm/pgtable.h>
#include <asm/csr.h>
#include <asm/hwcap.h>
#include <asm/image.h>
#include "efi-header.S"
+#ifdef CONFIG_XIP_KERNEL
+.macro XIP_FIXUP_OFFSET reg
+ REG_L t0, _xip_fixup
+ add \reg, \reg, t0
+.endm
+_xip_fixup: .dword CONFIG_PHYS_RAM_BASE - CONFIG_XIP_PHYS_ADDR - XIP_OFFSET
+#else
+.macro XIP_FIXUP_OFFSET reg
+.endm
+#endif /* CONFIG_XIP_KERNEL */
+
__HEAD
ENTRY(_start)
/*
@@ -69,7 +81,9 @@ pe_head_start:
#ifdef CONFIG_MMU
relocate:
/* Relocate return address */
- li a1, PAGE_OFFSET
+ la a1, kernel_virt_addr
+ XIP_FIXUP_OFFSET a1
+ REG_L a1, 0(a1)
la a2, _start
sub a1, a1, a2
add ra, ra, a1
@@ -91,6 +105,7 @@ relocate:
* to ensure the new translations are in use.
*/
la a0, trampoline_pg_dir
+ XIP_FIXUP_OFFSET a0
srl a0, a0, PAGE_SHIFT
or a0, a0, a1
sfence.vma
@@ -144,7 +159,9 @@ secondary_start_sbi:
slli a3, a0, LGREG
la a4, __cpu_up_stack_pointer
+ XIP_FIXUP_OFFSET a4
la a5, __cpu_up_task_pointer
+ XIP_FIXUP_OFFSET a5
add a4, a3, a4
add a5, a3, a5
REG_L sp, (a4)
@@ -156,6 +173,7 @@ secondary_start_common:
#ifdef CONFIG_MMU
/* Enable virtual memory and relocate to virtual address */
la a0, swapper_pg_dir
+ XIP_FIXUP_OFFSET a0
call relocate
#endif
call setup_trap_vector
@@ -236,12 +254,33 @@ pmp_done:
.Lgood_cores:
#endif
+#ifndef CONFIG_XIP_KERNEL
/* Pick one hart to run the main boot sequence */
la a3, hart_lottery
li a2, 1
amoadd.w a3, a2, (a3)
bnez a3, .Lsecondary_start
+#else
+ /* hart_lottery in flash contains a magic number */
+ la a3, hart_lottery
+ mv a2, a3
+ XIP_FIXUP_OFFSET a2
+ lw t1, (a3)
+ amoswap.w t0, t1, (a2)
+ /* first time here if hart_lottery in RAM is not set */
+ beq t0, t1, .Lsecondary_start
+
+ la sp, _end + THREAD_SIZE
+ XIP_FIXUP_OFFSET sp
+ mv s0, a0
+ call __copy_data
+
+ /* Restore a0 copy */
+ mv a0, s0
+#endif
+
+#ifndef CONFIG_XIP_KERNEL
/* Clear BSS for flat non-ELF images */
la a3, __bss_start
la a4, __bss_stop
@@ -251,15 +290,18 @@ clear_bss:
add a3, a3, RISCV_SZPTR
blt a3, a4, clear_bss
clear_bss_done:
-
+#endif
/* Save hart ID and DTB physical address */
mv s0, a0
mv s1, a1
+
la a2, boot_cpu_hartid
+ XIP_FIXUP_OFFSET a2
REG_S a0, (a2)
/* Initialize page tables and relocate to virtual addresses */
la sp, init_thread_union + THREAD_SIZE
+ XIP_FIXUP_OFFSET sp
#ifdef CONFIG_BUILTIN_DTB
la a0, __dtb_start
#else
@@ -268,6 +310,7 @@ clear_bss_done:
call setup_vm
#ifdef CONFIG_MMU
la a0, early_pg_dir
+ XIP_FIXUP_OFFSET a0
call relocate
#endif /* CONFIG_MMU */
@@ -292,7 +335,9 @@ clear_bss_done:
slli a3, a0, LGREG
la a1, __cpu_up_stack_pointer
+ XIP_FIXUP_OFFSET a1
la a2, __cpu_up_task_pointer
+ XIP_FIXUP_OFFSET a2
add a1, a3, a1
add a2, a3, a2
diff --git a/arch/riscv/kernel/head.h b/arch/riscv/kernel/head.h
index b48dda3d04f6..aabbc3ac3e48 100644
--- a/arch/riscv/kernel/head.h
+++ b/arch/riscv/kernel/head.h
@@ -12,6 +12,9 @@ extern atomic_t hart_lottery;
asmlinkage void do_page_fault(struct pt_regs *regs);
asmlinkage void __init setup_vm(uintptr_t dtb_pa);
+#ifdef CONFIG_XIP_KERNEL
+asmlinkage void __init __copy_data(void);
+#endif
extern void *__cpu_up_stack_pointer[];
extern void *__cpu_up_task_pointer[];
diff --git a/arch/riscv/kernel/kexec_relocate.S b/arch/riscv/kernel/kexec_relocate.S
new file mode 100644
index 000000000000..88c3beabe9b4
--- /dev/null
+++ b/arch/riscv/kernel/kexec_relocate.S
@@ -0,0 +1,223 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2019 FORTH-ICS/CARV
+ * Nick Kossifidis <mick@ics.forth.gr>
+ */
+
+#include <asm/asm.h> /* For RISCV_* and REG_* macros */
+#include <asm/csr.h> /* For CSR_* macros */
+#include <asm/page.h> /* For PAGE_SIZE */
+#include <linux/linkage.h> /* For SYM_* macros */
+
+.section ".rodata"
+SYM_CODE_START(riscv_kexec_relocate)
+
+ /*
+ * s0: Pointer to the current entry
+ * s1: (const) Phys address to jump to after relocation
+ * s2: (const) Phys address of the FDT image
+ * s3: (const) The hartid of the current hart
+ * s4: Pointer to the destination address for the relocation
+ * s5: (const) Number of words per page
+ * s6: (const) 1, used for subtraction
+ * s7: (const) va_pa_offset, used when switching MMU off
+ * s8: (const) Physical address of the main loop
+ * s9: (debug) indirection page counter
+ * s10: (debug) entry counter
+ * s11: (debug) copied words counter
+ */
+ mv s0, a0
+ mv s1, a1
+ mv s2, a2
+ mv s3, a3
+ mv s4, zero
+ li s5, (PAGE_SIZE / RISCV_SZPTR)
+ li s6, 1
+ mv s7, a4
+ mv s8, zero
+ mv s9, zero
+ mv s10, zero
+ mv s11, zero
+
+ /* Disable / cleanup interrupts */
+ csrw CSR_SIE, zero
+ csrw CSR_SIP, zero
+
+ /*
+ * When we switch SATP.MODE to "Bare" we'll only
+ * play with physical addresses. However the first time
+ * we try to jump somewhere, the offset on the jump
+ * will be relative to pc which will still be on VA. To
+ * deal with this we set stvec to the physical address at
+ * the start of the loop below so that we jump there in
+ * any case.
+ */
+ la s8, 1f
+ sub s8, s8, s7
+ csrw CSR_STVEC, s8
+
+ /* Process entries in a loop */
+.align 2
+1:
+ addi s10, s10, 1
+ REG_L t0, 0(s0) /* t0 = *image->entry */
+ addi s0, s0, RISCV_SZPTR /* image->entry++ */
+
+ /* IND_DESTINATION entry ? -> save destination address */
+ andi t1, t0, 0x1
+ beqz t1, 2f
+ andi s4, t0, ~0x1
+ j 1b
+
+2:
+ /* IND_INDIRECTION entry ? -> update next entry ptr (PA) */
+ andi t1, t0, 0x2
+ beqz t1, 2f
+ andi s0, t0, ~0x2
+ addi s9, s9, 1
+ csrw CSR_SATP, zero
+ jalr zero, s8, 0
+
+2:
+ /* IND_DONE entry ? -> jump to done label */
+ andi t1, t0, 0x4
+ beqz t1, 2f
+ j 4f
+
+2:
+ /*
+ * IND_SOURCE entry ? -> copy page word by word to the
+ * destination address we got from IND_DESTINATION
+ */
+ andi t1, t0, 0x8
+ beqz t1, 1b /* Unknown entry type, ignore it */
+ andi t0, t0, ~0x8
+ mv t3, s5 /* i = num words per page */
+3: /* copy loop */
+ REG_L t1, (t0) /* t1 = *src_ptr */
+ REG_S t1, (s4) /* *dst_ptr = *src_ptr */
+ addi t0, t0, RISCV_SZPTR /* stc_ptr++ */
+ addi s4, s4, RISCV_SZPTR /* dst_ptr++ */
+ sub t3, t3, s6 /* i-- */
+ addi s11, s11, 1 /* c++ */
+ beqz t3, 1b /* copy done ? */
+ j 3b
+
+4:
+ /* Pass the arguments to the next kernel / Cleanup*/
+ mv a0, s3
+ mv a1, s2
+ mv a2, s1
+
+ /* Cleanup */
+ mv a3, zero
+ mv a4, zero
+ mv a5, zero
+ mv a6, zero
+ mv a7, zero
+
+ mv s0, zero
+ mv s1, zero
+ mv s2, zero
+ mv s3, zero
+ mv s4, zero
+ mv s5, zero
+ mv s6, zero
+ mv s7, zero
+ mv s8, zero
+ mv s9, zero
+ mv s10, zero
+ mv s11, zero
+
+ mv t0, zero
+ mv t1, zero
+ mv t2, zero
+ mv t3, zero
+ mv t4, zero
+ mv t5, zero
+ mv t6, zero
+ csrw CSR_SEPC, zero
+ csrw CSR_SCAUSE, zero
+ csrw CSR_SSCRATCH, zero
+
+ /*
+ * Make sure the relocated code is visible
+ * and jump to the new kernel
+ */
+ fence.i
+
+ jalr zero, a2, 0
+
+SYM_CODE_END(riscv_kexec_relocate)
+riscv_kexec_relocate_end:
+
+
+/* Used for jumping to crashkernel */
+.section ".text"
+SYM_CODE_START(riscv_kexec_norelocate)
+ /*
+ * s0: (const) Phys address to jump to
+ * s1: (const) Phys address of the FDT image
+ * s2: (const) The hartid of the current hart
+ * s3: (const) va_pa_offset, used when switching MMU off
+ */
+ mv s0, a1
+ mv s1, a2
+ mv s2, a3
+ mv s3, a4
+
+ /* Disable / cleanup interrupts */
+ csrw CSR_SIE, zero
+ csrw CSR_SIP, zero
+
+ /* Switch to physical addressing */
+ la s4, 1f
+ sub s4, s4, s3
+ csrw CSR_STVEC, s4
+ csrw CSR_SATP, zero
+
+.align 2
+1:
+ /* Pass the arguments to the next kernel / Cleanup*/
+ mv a0, s2
+ mv a1, s1
+ mv a2, s0
+
+ /* Cleanup */
+ mv a3, zero
+ mv a4, zero
+ mv a5, zero
+ mv a6, zero
+ mv a7, zero
+
+ mv s0, zero
+ mv s1, zero
+ mv s2, zero
+ mv s3, zero
+ mv s4, zero
+ mv s5, zero
+ mv s6, zero
+ mv s7, zero
+ mv s8, zero
+ mv s9, zero
+ mv s10, zero
+ mv s11, zero
+
+ mv t0, zero
+ mv t1, zero
+ mv t2, zero
+ mv t3, zero
+ mv t4, zero
+ mv t5, zero
+ mv t6, zero
+ csrw CSR_SEPC, zero
+ csrw CSR_SCAUSE, zero
+ csrw CSR_SSCRATCH, zero
+
+ jalr zero, a2, 0
+SYM_CODE_END(riscv_kexec_norelocate)
+
+.section ".rodata"
+SYM_DATA(riscv_kexec_relocate_size,
+ .long riscv_kexec_relocate_end - riscv_kexec_relocate)
+
diff --git a/arch/riscv/kernel/machine_kexec.c b/arch/riscv/kernel/machine_kexec.c
new file mode 100644
index 000000000000..cc048143fba5
--- /dev/null
+++ b/arch/riscv/kernel/machine_kexec.c
@@ -0,0 +1,193 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019 FORTH-ICS/CARV
+ * Nick Kossifidis <mick@ics.forth.gr>
+ */
+
+#include <linux/kexec.h>
+#include <asm/kexec.h> /* For riscv_kexec_* symbol defines */
+#include <linux/smp.h> /* For smp_send_stop () */
+#include <asm/cacheflush.h> /* For local_flush_icache_all() */
+#include <asm/barrier.h> /* For smp_wmb() */
+#include <asm/page.h> /* For PAGE_MASK */
+#include <linux/libfdt.h> /* For fdt_check_header() */
+#include <asm/set_memory.h> /* For set_memory_x() */
+#include <linux/compiler.h> /* For unreachable() */
+#include <linux/cpu.h> /* For cpu_down() */
+
+/**
+ * kexec_image_info - Print received image details
+ */
+static void
+kexec_image_info(const struct kimage *image)
+{
+ unsigned long i;
+
+ pr_debug("Kexec image info:\n");
+ pr_debug("\ttype: %d\n", image->type);
+ pr_debug("\tstart: %lx\n", image->start);
+ pr_debug("\thead: %lx\n", image->head);
+ pr_debug("\tnr_segments: %lu\n", image->nr_segments);
+
+ for (i = 0; i < image->nr_segments; i++) {
+ pr_debug("\t segment[%lu]: %016lx - %016lx", i,
+ image->segment[i].mem,
+ image->segment[i].mem + image->segment[i].memsz);
+ pr_debug("\t\t0x%lx bytes, %lu pages\n",
+ (unsigned long) image->segment[i].memsz,
+ (unsigned long) image->segment[i].memsz / PAGE_SIZE);
+ }
+}
+
+/**
+ * machine_kexec_prepare - Initialize kexec
+ *
+ * This function is called from do_kexec_load, when the user has
+ * provided us with an image to be loaded. Its goal is to validate
+ * the image and prepare the control code buffer as needed.
+ * Note that kimage_alloc_init has already been called and the
+ * control buffer has already been allocated.
+ */
+int
+machine_kexec_prepare(struct kimage *image)
+{
+ struct kimage_arch *internal = &image->arch;
+ struct fdt_header fdt = {0};
+ void *control_code_buffer = NULL;
+ unsigned int control_code_buffer_sz = 0;
+ int i = 0;
+
+ kexec_image_info(image);
+
+ /* Find the Flattened Device Tree and save its physical address */
+ for (i = 0; i < image->nr_segments; i++) {
+ if (image->segment[i].memsz <= sizeof(fdt))
+ continue;
+
+ if (copy_from_user(&fdt, image->segment[i].buf, sizeof(fdt)))
+ continue;
+
+ if (fdt_check_header(&fdt))
+ continue;
+
+ internal->fdt_addr = (unsigned long) image->segment[i].mem;
+ break;
+ }
+
+ if (!internal->fdt_addr) {
+ pr_err("Device tree not included in the provided image\n");
+ return -EINVAL;
+ }
+
+ /* Copy the assembler code for relocation to the control page */
+ if (image->type != KEXEC_TYPE_CRASH) {
+ control_code_buffer = page_address(image->control_code_page);
+ control_code_buffer_sz = page_size(image->control_code_page);
+
+ if (unlikely(riscv_kexec_relocate_size > control_code_buffer_sz)) {
+ pr_err("Relocation code doesn't fit within a control page\n");
+ return -EINVAL;
+ }
+
+ memcpy(control_code_buffer, riscv_kexec_relocate,
+ riscv_kexec_relocate_size);
+
+ /* Mark the control page executable */
+ set_memory_x((unsigned long) control_code_buffer, 1);
+ }
+
+ return 0;
+}
+
+
+/**
+ * machine_kexec_cleanup - Cleanup any leftovers from
+ * machine_kexec_prepare
+ *
+ * This function is called by kimage_free to handle any arch-specific
+ * allocations done on machine_kexec_prepare. Since we didn't do any
+ * allocations there, this is just an empty function. Note that the
+ * control buffer is freed by kimage_free.
+ */
+void
+machine_kexec_cleanup(struct kimage *image)
+{
+}
+
+
+/*
+ * machine_shutdown - Prepare for a kexec reboot
+ *
+ * This function is called by kernel_kexec just before machine_kexec
+ * below. Its goal is to prepare the rest of the system (the other
+ * harts and possibly devices etc) for a kexec reboot.
+ */
+void machine_shutdown(void)
+{
+ /*
+ * No more interrupts on this hart
+ * until we are back up.
+ */
+ local_irq_disable();
+
+#if defined(CONFIG_HOTPLUG_CPU)
+ smp_shutdown_nonboot_cpus(smp_processor_id());
+#endif
+}
+
+/**
+ * machine_crash_shutdown - Prepare to kexec after a kernel crash
+ *
+ * This function is called by crash_kexec just before machine_kexec
+ * below and its goal is similar to machine_shutdown, but in case of
+ * a kernel crash. Since we don't handle such cases yet, this function
+ * is empty.
+ */
+void
+machine_crash_shutdown(struct pt_regs *regs)
+{
+ crash_save_cpu(regs, smp_processor_id());
+ machine_shutdown();
+ pr_info("Starting crashdump kernel...\n");
+}
+
+/**
+ * machine_kexec - Jump to the loaded kimage
+ *
+ * This function is called by kernel_kexec which is called by the
+ * reboot system call when the reboot cmd is LINUX_REBOOT_CMD_KEXEC,
+ * or by crash_kernel which is called by the kernel's arch-specific
+ * trap handler in case of a kernel panic. It's the final stage of
+ * the kexec process where the pre-loaded kimage is ready to be
+ * executed. We assume at this point that all other harts are
+ * suspended and this hart will be the new boot hart.
+ */
+void __noreturn
+machine_kexec(struct kimage *image)
+{
+ struct kimage_arch *internal = &image->arch;
+ unsigned long jump_addr = (unsigned long) image->start;
+ unsigned long first_ind_entry = (unsigned long) &image->head;
+ unsigned long this_hart_id = raw_smp_processor_id();
+ unsigned long fdt_addr = internal->fdt_addr;
+ void *control_code_buffer = page_address(image->control_code_page);
+ riscv_kexec_method kexec_method = NULL;
+
+ if (image->type != KEXEC_TYPE_CRASH)
+ kexec_method = control_code_buffer;
+ else
+ kexec_method = (riscv_kexec_method) &riscv_kexec_norelocate;
+
+ pr_notice("Will call new kernel at %08lx from hart id %lx\n",
+ jump_addr, this_hart_id);
+ pr_notice("FDT image at %08lx\n", fdt_addr);
+
+ /* Make sure the relocation code is visible to the hart */
+ local_flush_icache_all();
+
+ /* Jump to the relocation code */
+ pr_notice("Bye...\n");
+ kexec_method(first_ind_entry, jump_addr, fdt_addr,
+ this_hart_id, va_pa_offset);
+ unreachable();
+}
diff --git a/arch/riscv/kernel/mcount.S b/arch/riscv/kernel/mcount.S
index 8a5593ff9ff3..6d462681c9c0 100644
--- a/arch/riscv/kernel/mcount.S
+++ b/arch/riscv/kernel/mcount.S
@@ -47,8 +47,8 @@
ENTRY(ftrace_stub)
#ifdef CONFIG_DYNAMIC_FTRACE
- .global _mcount
- .set _mcount, ftrace_stub
+ .global MCOUNT_NAME
+ .set MCOUNT_NAME, ftrace_stub
#endif
ret
ENDPROC(ftrace_stub)
@@ -78,7 +78,7 @@ ENDPROC(return_to_handler)
#endif
#ifndef CONFIG_DYNAMIC_FTRACE
-ENTRY(_mcount)
+ENTRY(MCOUNT_NAME)
la t4, ftrace_stub
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
la t0, ftrace_graph_return
@@ -124,6 +124,6 @@ do_trace:
jalr t5
RESTORE_ABI_STATE
ret
-ENDPROC(_mcount)
+ENDPROC(MCOUNT_NAME)
#endif
-EXPORT_SYMBOL(_mcount)
+EXPORT_SYMBOL(MCOUNT_NAME)
diff --git a/arch/riscv/kernel/module.c b/arch/riscv/kernel/module.c
index 104fba889cf7..68a9e3d1fe16 100644
--- a/arch/riscv/kernel/module.c
+++ b/arch/riscv/kernel/module.c
@@ -408,13 +408,11 @@ int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab,
}
#if defined(CONFIG_MMU) && defined(CONFIG_64BIT)
-#define VMALLOC_MODULE_START \
- max(PFN_ALIGN((unsigned long)&_end - SZ_2G), VMALLOC_START)
void *module_alloc(unsigned long size)
{
- return __vmalloc_node_range(size, 1, VMALLOC_MODULE_START,
- VMALLOC_END, GFP_KERNEL,
- PAGE_KERNEL_EXEC, 0, NUMA_NO_NODE,
+ return __vmalloc_node_range(size, 1, MODULES_VADDR,
+ MODULES_END, GFP_KERNEL,
+ PAGE_KERNEL, 0, NUMA_NO_NODE,
__builtin_return_address(0));
}
#endif
diff --git a/arch/riscv/kernel/probes/kprobes.c b/arch/riscv/kernel/probes/kprobes.c
index 7e2c78e2ca6b..10b965c34536 100644
--- a/arch/riscv/kernel/probes/kprobes.c
+++ b/arch/riscv/kernel/probes/kprobes.c
@@ -84,6 +84,14 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p)
return 0;
}
+void *alloc_insn_page(void)
+{
+ return __vmalloc_node_range(PAGE_SIZE, 1, VMALLOC_START, VMALLOC_END,
+ GFP_KERNEL, PAGE_KERNEL_READ_EXEC,
+ VM_FLUSH_RESET_PERMS, NUMA_NO_NODE,
+ __builtin_return_address(0));
+}
+
/* install breakpoint in text */
void __kprobes arch_arm_kprobe(struct kprobe *p)
{
@@ -260,8 +268,10 @@ int __kprobes kprobe_fault_handler(struct pt_regs *regs, unsigned int trapnr)
if (kcb->kprobe_status == KPROBE_REENTER)
restore_previous_kprobe(kcb);
- else
+ else {
+ kprobes_restore_local_irqflag(kcb, regs);
reset_current_kprobe();
+ }
break;
case KPROBE_HIT_ACTIVE:
diff --git a/arch/riscv/kernel/sbi.c b/arch/riscv/kernel/sbi.c
index d3bf756321a5..7402a417f38e 100644
--- a/arch/riscv/kernel/sbi.c
+++ b/arch/riscv/kernel/sbi.c
@@ -11,14 +11,14 @@
#include <asm/smp.h>
/* default SBI version is 0.1 */
-unsigned long sbi_spec_version = SBI_SPEC_VERSION_DEFAULT;
+unsigned long sbi_spec_version __ro_after_init = SBI_SPEC_VERSION_DEFAULT;
EXPORT_SYMBOL(sbi_spec_version);
-static void (*__sbi_set_timer)(uint64_t stime);
-static int (*__sbi_send_ipi)(const unsigned long *hart_mask);
+static void (*__sbi_set_timer)(uint64_t stime) __ro_after_init;
+static int (*__sbi_send_ipi)(const unsigned long *hart_mask) __ro_after_init;
static int (*__sbi_rfence)(int fid, const unsigned long *hart_mask,
unsigned long start, unsigned long size,
- unsigned long arg4, unsigned long arg5);
+ unsigned long arg4, unsigned long arg5) __ro_after_init;
struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0,
unsigned long arg1, unsigned long arg2,
@@ -547,6 +547,21 @@ static inline long sbi_get_firmware_version(void)
return __sbi_base_ecall(SBI_EXT_BASE_GET_IMP_VERSION);
}
+long sbi_get_mvendorid(void)
+{
+ return __sbi_base_ecall(SBI_EXT_BASE_GET_MVENDORID);
+}
+
+long sbi_get_marchid(void)
+{
+ return __sbi_base_ecall(SBI_EXT_BASE_GET_MARCHID);
+}
+
+long sbi_get_mimpid(void)
+{
+ return __sbi_base_ecall(SBI_EXT_BASE_GET_MIMPID);
+}
+
static void sbi_send_cpumask_ipi(const struct cpumask *target)
{
struct cpumask hartid_mask;
@@ -556,7 +571,7 @@ static void sbi_send_cpumask_ipi(const struct cpumask *target)
sbi_send_ipi(cpumask_bits(&hartid_mask));
}
-static struct riscv_ipi_ops sbi_ipi_ops = {
+static const struct riscv_ipi_ops sbi_ipi_ops = {
.ipi_inject = sbi_send_cpumask_ipi
};
@@ -577,19 +592,19 @@ void __init sbi_init(void)
sbi_get_firmware_id(), sbi_get_firmware_version());
if (sbi_probe_extension(SBI_EXT_TIME) > 0) {
__sbi_set_timer = __sbi_set_timer_v02;
- pr_info("SBI v0.2 TIME extension detected\n");
+ pr_info("SBI TIME extension detected\n");
} else {
__sbi_set_timer = __sbi_set_timer_v01;
}
if (sbi_probe_extension(SBI_EXT_IPI) > 0) {
__sbi_send_ipi = __sbi_send_ipi_v02;
- pr_info("SBI v0.2 IPI extension detected\n");
+ pr_info("SBI IPI extension detected\n");
} else {
__sbi_send_ipi = __sbi_send_ipi_v01;
}
if (sbi_probe_extension(SBI_EXT_RFENCE) > 0) {
__sbi_rfence = __sbi_rfence_v02;
- pr_info("SBI v0.2 RFENCE extension detected\n");
+ pr_info("SBI RFENCE extension detected\n");
} else {
__sbi_rfence = __sbi_rfence_v01;
}
diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
index f8f15332caa2..7b31779101f6 100644
--- a/arch/riscv/kernel/setup.c
+++ b/arch/riscv/kernel/setup.c
@@ -20,9 +20,11 @@
#include <linux/swiotlb.h>
#include <linux/smp.h>
#include <linux/efi.h>
+#include <linux/crash_dump.h>
#include <asm/cpu_ops.h>
#include <asm/early_ioremap.h>
+#include <asm/pgtable.h>
#include <asm/setup.h>
#include <asm/set_memory.h>
#include <asm/sections.h>
@@ -50,7 +52,11 @@ struct screen_info screen_info __section(".data") = {
* This is used before the kernel initializes the BSS so it can't be in the
* BSS.
*/
-atomic_t hart_lottery __section(".sdata");
+atomic_t hart_lottery __section(".sdata")
+#ifdef CONFIG_XIP_KERNEL
+= ATOMIC_INIT(0xC001BEEF)
+#endif
+;
unsigned long boot_cpu_hartid;
static DEFINE_PER_CPU(struct cpu, cpu_devices);
@@ -60,10 +66,14 @@ static DEFINE_PER_CPU(struct cpu, cpu_devices);
* also add "System RAM" regions for compatibility with other
* archs, and the rest of the known regions for completeness.
*/
+static struct resource kimage_res = { .name = "Kernel image", };
static struct resource code_res = { .name = "Kernel code", };
static struct resource data_res = { .name = "Kernel data", };
static struct resource rodata_res = { .name = "Kernel rodata", };
static struct resource bss_res = { .name = "Kernel bss", };
+#ifdef CONFIG_CRASH_DUMP
+static struct resource elfcorehdr_res = { .name = "ELF Core hdr", };
+#endif
static int __init add_resource(struct resource *parent,
struct resource *res)
@@ -80,45 +90,54 @@ static int __init add_resource(struct resource *parent,
return 1;
}
-static int __init add_kernel_resources(struct resource *res)
+static int __init add_kernel_resources(void)
{
int ret = 0;
/*
* The memory region of the kernel image is continuous and
- * was reserved on setup_bootmem, find it here and register
- * it as a resource, then register the various segments of
- * the image as child nodes
+ * was reserved on setup_bootmem, register it here as a
+ * resource, with the various segments of the image as
+ * child nodes.
*/
- if (!(res->start <= code_res.start && res->end >= data_res.end))
- return 0;
- res->name = "Kernel image";
- res->flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
+ code_res.start = __pa_symbol(_text);
+ code_res.end = __pa_symbol(_etext) - 1;
+ code_res.flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
- /*
- * We removed a part of this region on setup_bootmem so
- * we need to expand the resource for the bss to fit in.
- */
- res->end = bss_res.end;
+ rodata_res.start = __pa_symbol(__start_rodata);
+ rodata_res.end = __pa_symbol(__end_rodata) - 1;
+ rodata_res.flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
+
+ data_res.start = __pa_symbol(_data);
+ data_res.end = __pa_symbol(_edata) - 1;
+ data_res.flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
+
+ bss_res.start = __pa_symbol(__bss_start);
+ bss_res.end = __pa_symbol(__bss_stop) - 1;
+ bss_res.flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
+
+ kimage_res.start = code_res.start;
+ kimage_res.end = bss_res.end;
+ kimage_res.flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
- ret = add_resource(&iomem_resource, res);
+ ret = add_resource(&iomem_resource, &kimage_res);
if (ret < 0)
return ret;
- ret = add_resource(res, &code_res);
+ ret = add_resource(&kimage_res, &code_res);
if (ret < 0)
return ret;
- ret = add_resource(res, &rodata_res);
+ ret = add_resource(&kimage_res, &rodata_res);
if (ret < 0)
return ret;
- ret = add_resource(res, &data_res);
+ ret = add_resource(&kimage_res, &data_res);
if (ret < 0)
return ret;
- ret = add_resource(res, &bss_res);
+ ret = add_resource(&kimage_res, &bss_res);
return ret;
}
@@ -129,54 +148,59 @@ static void __init init_resources(void)
struct resource *res = NULL;
struct resource *mem_res = NULL;
size_t mem_res_sz = 0;
- int ret = 0, i = 0;
-
- code_res.start = __pa_symbol(_text);
- code_res.end = __pa_symbol(_etext) - 1;
- code_res.flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
-
- rodata_res.start = __pa_symbol(__start_rodata);
- rodata_res.end = __pa_symbol(__end_rodata) - 1;
- rodata_res.flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
-
- data_res.start = __pa_symbol(_data);
- data_res.end = __pa_symbol(_edata) - 1;
- data_res.flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
-
- bss_res.start = __pa_symbol(__bss_start);
- bss_res.end = __pa_symbol(__bss_stop) - 1;
- bss_res.flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
+ int num_resources = 0, res_idx = 0;
+ int ret = 0;
/* + 1 as memblock_alloc() might increase memblock.reserved.cnt */
- mem_res_sz = (memblock.memory.cnt + memblock.reserved.cnt + 1) * sizeof(*mem_res);
+ num_resources = memblock.memory.cnt + memblock.reserved.cnt + 1;
+ res_idx = num_resources - 1;
+
+ mem_res_sz = num_resources * sizeof(*mem_res);
mem_res = memblock_alloc(mem_res_sz, SMP_CACHE_BYTES);
if (!mem_res)
panic("%s: Failed to allocate %zu bytes\n", __func__, mem_res_sz);
+
/*
* Start by adding the reserved regions, if they overlap
* with /memory regions, insert_resource later on will take
* care of it.
*/
+ ret = add_kernel_resources();
+ if (ret < 0)
+ goto error;
+
+#ifdef CONFIG_KEXEC_CORE
+ if (crashk_res.start != crashk_res.end) {
+ ret = add_resource(&iomem_resource, &crashk_res);
+ if (ret < 0)
+ goto error;
+ }
+#endif
+
+#ifdef CONFIG_CRASH_DUMP
+ if (elfcorehdr_size > 0) {
+ elfcorehdr_res.start = elfcorehdr_addr;
+ elfcorehdr_res.end = elfcorehdr_addr + elfcorehdr_size - 1;
+ elfcorehdr_res.flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
+ add_resource(&iomem_resource, &elfcorehdr_res);
+ }
+#endif
+
for_each_reserved_mem_region(region) {
- res = &mem_res[i++];
+ res = &mem_res[res_idx--];
res->name = "Reserved";
res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
res->start = __pfn_to_phys(memblock_region_reserved_base_pfn(region));
res->end = __pfn_to_phys(memblock_region_reserved_end_pfn(region)) - 1;
- ret = add_kernel_resources(res);
- if (ret < 0)
- goto error;
- else if (ret)
- continue;
-
/*
* Ignore any other reserved regions within
* system memory.
*/
if (memblock_is_memory(res->start)) {
- memblock_free((phys_addr_t) res, sizeof(struct resource));
+ /* Re-use this pre-allocated resource */
+ res_idx++;
continue;
}
@@ -187,7 +211,7 @@ static void __init init_resources(void)
/* Add /memory regions to the resource tree */
for_each_mem_region(region) {
- res = &mem_res[i++];
+ res = &mem_res[res_idx--];
if (unlikely(memblock_is_nomap(region))) {
res->name = "Reserved";
@@ -205,6 +229,9 @@ static void __init init_resources(void)
goto error;
}
+ /* Clean-up any unused pre-allocated resources */
+ mem_res_sz = (num_resources - res_idx + 1) * sizeof(*mem_res);
+ memblock_free((phys_addr_t) mem_res, mem_res_sz);
return;
error:
@@ -251,21 +278,26 @@ void __init setup_arch(char **cmdline_p)
efi_init();
setup_bootmem();
paging_init();
- init_resources();
#if IS_ENABLED(CONFIG_BUILTIN_DTB)
unflatten_and_copy_device_tree();
#else
- if (early_init_dt_verify(__va(dtb_early_pa)))
+ if (early_init_dt_verify(__va(XIP_FIXUP(dtb_early_pa))))
unflatten_device_tree();
else
pr_err("No DTB found in kernel mappings\n");
#endif
misc_mem_init();
+ init_resources();
sbi_init();
- if (IS_ENABLED(CONFIG_STRICT_KERNEL_RWX))
+ if (IS_ENABLED(CONFIG_STRICT_KERNEL_RWX)) {
protect_kernel_text_data();
+#if defined(CONFIG_64BIT) && defined(CONFIG_MMU) && !defined(CONFIG_XIP_KERNEL)
+ protect_kernel_linear_mapping_text_rodata();
+#endif
+ }
+
#ifdef CONFIG_SWIOTLB
swiotlb_init(1);
#endif
diff --git a/arch/riscv/kernel/smp.c b/arch/riscv/kernel/smp.c
index ea028d9e0d24..921d9d7df400 100644
--- a/arch/riscv/kernel/smp.c
+++ b/arch/riscv/kernel/smp.c
@@ -9,6 +9,7 @@
*/
#include <linux/cpu.h>
+#include <linux/clockchips.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/profile.h>
@@ -27,10 +28,11 @@ enum ipi_message_type {
IPI_CALL_FUNC,
IPI_CPU_STOP,
IPI_IRQ_WORK,
+ IPI_TIMER,
IPI_MAX
};
-unsigned long __cpuid_to_hartid_map[NR_CPUS] = {
+unsigned long __cpuid_to_hartid_map[NR_CPUS] __ro_after_init = {
[0 ... NR_CPUS-1] = INVALID_HARTID
};
@@ -54,7 +56,7 @@ int riscv_hartid_to_cpuid(int hartid)
return i;
pr_err("Couldn't find cpu id for hartid [%d]\n", hartid);
- return i;
+ return -ENOENT;
}
void riscv_cpuid_to_hartid_mask(const struct cpumask *in, struct cpumask *out)
@@ -85,9 +87,9 @@ static void ipi_stop(void)
wait_for_interrupt();
}
-static struct riscv_ipi_ops *ipi_ops;
+static const struct riscv_ipi_ops *ipi_ops __ro_after_init;
-void riscv_set_ipi_ops(struct riscv_ipi_ops *ops)
+void riscv_set_ipi_ops(const struct riscv_ipi_ops *ops)
{
ipi_ops = ops;
}
@@ -176,6 +178,12 @@ void handle_IPI(struct pt_regs *regs)
irq_work_run();
}
+#ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
+ if (ops & (1 << IPI_TIMER)) {
+ stats[IPI_TIMER]++;
+ tick_receive_broadcast();
+ }
+#endif
BUG_ON((ops >> IPI_MAX) != 0);
/* Order data access and bit testing. */
@@ -192,6 +200,7 @@ static const char * const ipi_names[] = {
[IPI_CALL_FUNC] = "Function call interrupts",
[IPI_CPU_STOP] = "CPU stop interrupts",
[IPI_IRQ_WORK] = "IRQ work interrupts",
+ [IPI_TIMER] = "Timer broadcast interrupts",
};
void show_ipi_stats(struct seq_file *p, int prec)
@@ -217,6 +226,13 @@ void arch_send_call_function_single_ipi(int cpu)
send_ipi_single(cpu, IPI_CALL_FUNC);
}
+#ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
+void tick_broadcast(const struct cpumask *mask)
+{
+ send_ipi_mask(mask, IPI_TIMER);
+}
+#endif
+
void smp_send_stop(void)
{
unsigned long timeout;
diff --git a/arch/riscv/kernel/smpboot.c b/arch/riscv/kernel/smpboot.c
index 5e276c25646f..9a408e2942ac 100644
--- a/arch/riscv/kernel/smpboot.c
+++ b/arch/riscv/kernel/smpboot.c
@@ -32,6 +32,7 @@
#include <asm/sections.h>
#include <asm/sbi.h>
#include <asm/smp.h>
+#include <asm/alternative.h>
#include "head.h"
@@ -40,6 +41,9 @@ static DECLARE_COMPLETION(cpu_running);
void __init smp_prepare_boot_cpu(void)
{
init_cpu_topology();
+#ifdef CONFIG_RISCV_ERRATA_ALTERNATIVE
+ apply_boot_alternatives();
+#endif
}
void __init smp_prepare_cpus(unsigned int max_cpus)
diff --git a/arch/riscv/kernel/syscall_table.c b/arch/riscv/kernel/syscall_table.c
index f1ead9df96ca..a63c667c27b3 100644
--- a/arch/riscv/kernel/syscall_table.c
+++ b/arch/riscv/kernel/syscall_table.c
@@ -13,7 +13,7 @@
#undef __SYSCALL
#define __SYSCALL(nr, call) [nr] = (call),
-void *sys_call_table[__NR_syscalls] = {
+void * const sys_call_table[__NR_syscalls] = {
[0 ... __NR_syscalls - 1] = sys_ni_syscall,
#include <asm/unistd.h>
};
diff --git a/arch/riscv/kernel/time.c b/arch/riscv/kernel/time.c
index 1b432264f7ef..8217b0f67c6c 100644
--- a/arch/riscv/kernel/time.c
+++ b/arch/riscv/kernel/time.c
@@ -11,7 +11,7 @@
#include <asm/processor.h>
#include <asm/timex.h>
-unsigned long riscv_timebase;
+unsigned long riscv_timebase __ro_after_init;
EXPORT_SYMBOL_GPL(riscv_timebase);
void __init time_init(void)
diff --git a/arch/riscv/kernel/traps.c b/arch/riscv/kernel/traps.c
index 1357abf79570..07fdded10c21 100644
--- a/arch/riscv/kernel/traps.c
+++ b/arch/riscv/kernel/traps.c
@@ -197,6 +197,6 @@ int is_valid_bugaddr(unsigned long pc)
#endif /* CONFIG_GENERIC_BUG */
/* stvec & scratch is already set from head.S */
-void trap_init(void)
+void __init trap_init(void)
{
}
diff --git a/arch/riscv/kernel/vdso.c b/arch/riscv/kernel/vdso.c
index 3f1d35e7c98a..25a3b8849599 100644
--- a/arch/riscv/kernel/vdso.c
+++ b/arch/riscv/kernel/vdso.c
@@ -20,8 +20,8 @@
extern char vdso_start[], vdso_end[];
-static unsigned int vdso_pages;
-static struct page **vdso_pagelist;
+static unsigned int vdso_pages __ro_after_init;
+static struct page **vdso_pagelist __ro_after_init;
/*
* The vDSO data page.
diff --git a/arch/riscv/kernel/vdso/Makefile b/arch/riscv/kernel/vdso/Makefile
index 71a315e73cbe..24d936c147cd 100644
--- a/arch/riscv/kernel/vdso/Makefile
+++ b/arch/riscv/kernel/vdso/Makefile
@@ -23,7 +23,7 @@ ifneq ($(c-gettimeofday-y),)
endif
# Build rules
-targets := $(obj-vdso) vdso.so vdso.so.dbg vdso.lds vdso-dummy.o
+targets := $(obj-vdso) vdso.so vdso.so.dbg vdso.lds vdso-syms.S
obj-vdso := $(addprefix $(obj)/, $(obj-vdso))
obj-y += vdso.o vdso-syms.o
@@ -41,11 +41,10 @@ KASAN_SANITIZE := n
$(obj)/vdso.o: $(obj)/vdso.so
# link rule for the .so file, .lds has to be first
-SYSCFLAGS_vdso.so.dbg = $(c_flags)
-$(obj)/vdso.so.dbg: $(src)/vdso.lds $(obj-vdso) FORCE
+$(obj)/vdso.so.dbg: $(obj)/vdso.lds $(obj-vdso) FORCE
$(call if_changed,vdsold)
-SYSCFLAGS_vdso.so.dbg = -shared -s -Wl,-soname=linux-vdso.so.1 \
- -Wl,--build-id=sha1 -Wl,--hash-style=both
+LDFLAGS_vdso.so.dbg = -shared -s -soname=linux-vdso.so.1 \
+ --build-id=sha1 --hash-style=both --eh-frame-hdr
# We also create a special relocatable object that should mirror the symbol
# table and layout of the linked DSO. With ld --just-symbols we can then
@@ -60,13 +59,10 @@ $(obj)/%.so: $(obj)/%.so.dbg FORCE
# actual build commands
# The DSO images are built using a special linker script
-# Add -lgcc so rv32 gets static muldi3 and lshrdi3 definitions.
# Make sure only to export the intended __vdso_xxx symbol offsets.
quiet_cmd_vdsold = VDSOLD $@
- cmd_vdsold = $(CC) $(KBUILD_CFLAGS) $(call cc-option, -no-pie) -nostdlib -nostartfiles $(SYSCFLAGS_$(@F)) \
- -Wl,-T,$(filter-out FORCE,$^) -o $@.tmp && \
- $(CROSS_COMPILE)objcopy \
- $(patsubst %, -G __vdso_%, $(vdso-syms)) $@.tmp $@ && \
+ cmd_vdsold = $(LD) $(ld_flags) -T $(filter-out FORCE,$^) -o $@.tmp && \
+ $(OBJCOPY) $(patsubst %, -G __vdso_%, $(vdso-syms)) $@.tmp $@ && \
rm $@.tmp
# Extracts symbol offsets from the VDSO, converting them into an assembly file
diff --git a/arch/riscv/kernel/vmlinux-xip.lds.S b/arch/riscv/kernel/vmlinux-xip.lds.S
new file mode 100644
index 000000000000..4b29b9917f99
--- /dev/null
+++ b/arch/riscv/kernel/vmlinux-xip.lds.S
@@ -0,0 +1,133 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2012 Regents of the University of California
+ * Copyright (C) 2017 SiFive
+ * Copyright (C) 2020 Vitaly Wool, Konsulko AB
+ */
+
+#include <asm/pgtable.h>
+#define LOAD_OFFSET KERNEL_LINK_ADDR
+/* No __ro_after_init data in the .rodata section - which will always be ro */
+#define RO_AFTER_INIT_DATA
+
+#include <asm/vmlinux.lds.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/cache.h>
+#include <asm/thread_info.h>
+
+OUTPUT_ARCH(riscv)
+ENTRY(_start)
+
+jiffies = jiffies_64;
+
+SECTIONS
+{
+ /* Beginning of code and text segment */
+ . = LOAD_OFFSET;
+ _xiprom = .;
+ _start = .;
+ HEAD_TEXT_SECTION
+ INIT_TEXT_SECTION(PAGE_SIZE)
+ /* we have to discard exit text and such at runtime, not link time */
+ .exit.text :
+ {
+ EXIT_TEXT
+ }
+
+ .text : {
+ _text = .;
+ _stext = .;
+ TEXT_TEXT
+ SCHED_TEXT
+ CPUIDLE_TEXT
+ LOCK_TEXT
+ KPROBES_TEXT
+ ENTRY_TEXT
+ IRQENTRY_TEXT
+ SOFTIRQENTRY_TEXT
+ *(.fixup)
+ _etext = .;
+ }
+ RO_DATA(L1_CACHE_BYTES)
+ .srodata : {
+ *(.srodata*)
+ }
+ .init.rodata : {
+ INIT_SETUP(16)
+ INIT_CALLS
+ CON_INITCALL
+ INIT_RAM_FS
+ }
+ _exiprom = .; /* End of XIP ROM area */
+
+
+/*
+ * From this point, stuff is considered writable and will be copied to RAM
+ */
+ __data_loc = ALIGN(16); /* location in file */
+ . = LOAD_OFFSET + XIP_OFFSET; /* location in memory */
+
+ _sdata = .; /* Start of data section */
+ _data = .;
+ RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
+ _edata = .;
+ __start_ro_after_init = .;
+ .data.ro_after_init : AT(ADDR(.data.ro_after_init) - LOAD_OFFSET) {
+ *(.data..ro_after_init)
+ }
+ __end_ro_after_init = .;
+
+ . = ALIGN(PAGE_SIZE);
+ __init_begin = .;
+ .init.data : {
+ INIT_DATA
+ }
+ .exit.data : {
+ EXIT_DATA
+ }
+ . = ALIGN(8);
+ __soc_early_init_table : {
+ __soc_early_init_table_start = .;
+ KEEP(*(__soc_early_init_table))
+ __soc_early_init_table_end = .;
+ }
+ __soc_builtin_dtb_table : {
+ __soc_builtin_dtb_table_start = .;
+ KEEP(*(__soc_builtin_dtb_table))
+ __soc_builtin_dtb_table_end = .;
+ }
+ PERCPU_SECTION(L1_CACHE_BYTES)
+
+ . = ALIGN(PAGE_SIZE);
+ __init_end = .;
+
+ .sdata : {
+ __global_pointer$ = . + 0x800;
+ *(.sdata*)
+ *(.sbss*)
+ }
+
+ BSS_SECTION(PAGE_SIZE, PAGE_SIZE, 0)
+ EXCEPTION_TABLE(0x10)
+
+ .rel.dyn : AT(ADDR(.rel.dyn) - LOAD_OFFSET) {
+ *(.rel.dyn*)
+ }
+
+ /*
+ * End of copied data. We need a dummy section to get its LMA.
+ * Also located before final ALIGN() as trailing padding is not stored
+ * in the resulting binary file and useless to copy.
+ */
+ .data.endmark : AT(ADDR(.data.endmark) - LOAD_OFFSET) { }
+ _edata_loc = LOADADDR(.data.endmark);
+
+ . = ALIGN(PAGE_SIZE);
+ _end = .;
+
+ STABS_DEBUG
+ DWARF_DEBUG
+
+ DISCARDS
+}
diff --git a/arch/riscv/kernel/vmlinux.lds.S b/arch/riscv/kernel/vmlinux.lds.S
index de03cb22d0e9..891742ff75a7 100644
--- a/arch/riscv/kernel/vmlinux.lds.S
+++ b/arch/riscv/kernel/vmlinux.lds.S
@@ -4,7 +4,13 @@
* Copyright (C) 2017 SiFive
*/
-#define LOAD_OFFSET PAGE_OFFSET
+#ifdef CONFIG_XIP_KERNEL
+#include "vmlinux-xip.lds.S"
+#else
+
+#include <asm/pgtable.h>
+#define LOAD_OFFSET KERNEL_LINK_ADDR
+
#include <asm/vmlinux.lds.h>
#include <asm/page.h>
#include <asm/cache.h>
@@ -90,6 +96,13 @@ SECTIONS
}
__init_data_end = .;
+
+ . = ALIGN(8);
+ .alternative : {
+ __alt_start = .;
+ *(.alternative)
+ __alt_end = .;
+ }
__init_end = .;
/* Start of data section */
@@ -132,3 +145,4 @@ SECTIONS
DISCARDS
}
+#endif /* CONFIG_XIP_KERNEL */
diff --git a/arch/riscv/mm/fault.c b/arch/riscv/mm/fault.c
index c5dbd55cbf7c..096463cc6fff 100644
--- a/arch/riscv/mm/fault.c
+++ b/arch/riscv/mm/fault.c
@@ -231,6 +231,19 @@ asmlinkage void do_page_fault(struct pt_regs *regs)
return;
}
+#ifdef CONFIG_64BIT
+ /*
+ * Modules in 64bit kernels lie in their own virtual region which is not
+ * in the vmalloc region, but dealing with page faults in this region
+ * or the vmalloc region amounts to doing the same thing: checking that
+ * the mapping exists in init_mm.pgd and updating user page table, so
+ * just use vmalloc_fault.
+ */
+ if (unlikely(addr >= MODULES_VADDR && addr < MODULES_END)) {
+ vmalloc_fault(regs, code, addr);
+ return;
+ }
+#endif
/* Enable interrupts if they were enabled in the parent context. */
if (likely(regs->status & SR_PIE))
local_irq_enable();
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index 92e39cfa5227..dfb5e4f7a670 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -2,6 +2,8 @@
/*
* Copyright (C) 2012 Regents of the University of California
* Copyright (C) 2019 Western Digital Corporation or its affiliates.
+ * Copyright (C) 2020 FORTH-ICS/CARV
+ * Nick Kossifidis <mick@ics.forth.gr>
*/
#include <linux/init.h>
@@ -11,9 +13,11 @@
#include <linux/swap.h>
#include <linux/sizes.h>
#include <linux/of_fdt.h>
+#include <linux/of_reserved_mem.h>
#include <linux/libfdt.h>
#include <linux/set_memory.h>
#include <linux/dma-map-ops.h>
+#include <linux/crash_dump.h>
#include <asm/fixmap.h>
#include <asm/tlbflush.h>
@@ -25,14 +29,20 @@
#include "../kernel/head.h"
+unsigned long kernel_virt_addr = KERNEL_LINK_ADDR;
+EXPORT_SYMBOL(kernel_virt_addr);
+#ifdef CONFIG_XIP_KERNEL
+#define kernel_virt_addr (*((unsigned long *)XIP_FIXUP(&kernel_virt_addr)))
+#endif
+
unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)]
__page_aligned_bss;
EXPORT_SYMBOL(empty_zero_page);
extern char _start[];
#define DTB_EARLY_BASE_VA PGDIR_SIZE
-void *dtb_early_va __initdata;
-uintptr_t dtb_early_pa __initdata;
+void *_dtb_early_va __initdata;
+uintptr_t _dtb_early_pa __initdata;
struct pt_alloc_ops {
pte_t *(*get_pte_virt)(phys_addr_t pa);
@@ -57,7 +67,7 @@ static void __init zone_sizes_init(void)
free_area_init(max_zone_pfns);
}
-static void setup_zero_page(void)
+static void __init setup_zero_page(void)
{
memset((void *)empty_zero_page, 0, PAGE_SIZE);
}
@@ -75,7 +85,7 @@ static inline void print_mlm(char *name, unsigned long b, unsigned long t)
(((t) - (b)) >> 20));
}
-static void print_vm_layout(void)
+static void __init print_vm_layout(void)
{
pr_notice("Virtual kernel memory layout:\n");
print_mlk("fixmap", (unsigned long)FIXADDR_START,
@@ -88,6 +98,10 @@ static void print_vm_layout(void)
(unsigned long)VMALLOC_END);
print_mlm("lowmem", (unsigned long)PAGE_OFFSET,
(unsigned long)high_memory);
+#ifdef CONFIG_64BIT
+ print_mlm("kernel", (unsigned long)KERNEL_LINK_ADDR,
+ (unsigned long)ADDRESS_SPACE_END);
+#endif
}
#else
static void print_vm_layout(void) { }
@@ -112,11 +126,20 @@ void __init setup_bootmem(void)
phys_addr_t dram_end = memblock_end_of_DRAM();
phys_addr_t max_mapped_addr = __pa(~(ulong)0);
+#ifdef CONFIG_XIP_KERNEL
+ vmlinux_start = __pa_symbol(&_sdata);
+#endif
+
/* The maximal physical memory size is -PAGE_OFFSET. */
memblock_enforce_memory_limit(-PAGE_OFFSET);
- /* Reserve from the start of the kernel to the end of the kernel */
- memblock_reserve(vmlinux_start, vmlinux_end - vmlinux_start);
+ /*
+ * Reserve from the start of the kernel to the end of the kernel
+ * and make sure we align the reservation on PMD_SIZE since we will
+ * map the kernel in the linear mapping as read-only: we do not want
+ * any allocation to happen between _end and the next pmd aligned page.
+ */
+ memblock_reserve(vmlinux_start, (vmlinux_end - vmlinux_start + PMD_SIZE - 1) & PMD_MASK);
/*
* memblock allocator is not aware of the fact that last 4K bytes of
@@ -127,8 +150,9 @@ void __init setup_bootmem(void)
if (max_mapped_addr == (dram_end - 1))
memblock_set_current_limit(max_mapped_addr - 4096);
- max_pfn = PFN_DOWN(dram_end);
- max_low_pfn = max_pfn;
+ min_low_pfn = PFN_UP(memblock_start_of_DRAM());
+ max_low_pfn = max_pfn = PFN_DOWN(dram_end);
+
dma32_phys_limit = min(4UL * SZ_1G, (unsigned long)PFN_PHYS(max_low_pfn));
set_max_mapnr(max_low_pfn - ARCH_PFN_OFFSET);
@@ -147,12 +171,42 @@ void __init setup_bootmem(void)
memblock_allow_resize();
}
+#ifdef CONFIG_XIP_KERNEL
+
+extern char _xiprom[], _exiprom[];
+extern char _sdata[], _edata[];
+
+#endif /* CONFIG_XIP_KERNEL */
+
#ifdef CONFIG_MMU
-static struct pt_alloc_ops pt_ops;
+static struct pt_alloc_ops _pt_ops __ro_after_init;
+
+#ifdef CONFIG_XIP_KERNEL
+#define pt_ops (*(struct pt_alloc_ops *)XIP_FIXUP(&_pt_ops))
+#else
+#define pt_ops _pt_ops
+#endif
-unsigned long va_pa_offset;
+/* Offset between linear mapping virtual address and kernel load address */
+unsigned long va_pa_offset __ro_after_init;
EXPORT_SYMBOL(va_pa_offset);
-unsigned long pfn_base;
+#ifdef CONFIG_XIP_KERNEL
+#define va_pa_offset (*((unsigned long *)XIP_FIXUP(&va_pa_offset)))
+#endif
+/* Offset between kernel mapping virtual address and kernel load address */
+#ifdef CONFIG_64BIT
+unsigned long va_kernel_pa_offset;
+EXPORT_SYMBOL(va_kernel_pa_offset);
+#endif
+#ifdef CONFIG_XIP_KERNEL
+#define va_kernel_pa_offset (*((unsigned long *)XIP_FIXUP(&va_kernel_pa_offset)))
+#endif
+unsigned long va_kernel_xip_pa_offset;
+EXPORT_SYMBOL(va_kernel_xip_pa_offset);
+#ifdef CONFIG_XIP_KERNEL
+#define va_kernel_xip_pa_offset (*((unsigned long *)XIP_FIXUP(&va_kernel_xip_pa_offset)))
+#endif
+unsigned long pfn_base __ro_after_init;
EXPORT_SYMBOL(pfn_base);
pgd_t swapper_pg_dir[PTRS_PER_PGD] __page_aligned_bss;
@@ -161,6 +215,12 @@ pte_t fixmap_pte[PTRS_PER_PTE] __page_aligned_bss;
pgd_t early_pg_dir[PTRS_PER_PGD] __initdata __aligned(PAGE_SIZE);
+#ifdef CONFIG_XIP_KERNEL
+#define trampoline_pg_dir ((pgd_t *)XIP_FIXUP(trampoline_pg_dir))
+#define fixmap_pte ((pte_t *)XIP_FIXUP(fixmap_pte))
+#define early_pg_dir ((pgd_t *)XIP_FIXUP(early_pg_dir))
+#endif /* CONFIG_XIP_KERNEL */
+
void __set_fixmap(enum fixed_addresses idx, phys_addr_t phys, pgprot_t prot)
{
unsigned long addr = __fix_to_virt(idx);
@@ -212,8 +272,8 @@ static phys_addr_t alloc_pte_late(uintptr_t va)
unsigned long vaddr;
vaddr = __get_free_page(GFP_KERNEL);
- if (!vaddr || !pgtable_pte_page_ctor(virt_to_page(vaddr)))
- BUG();
+ BUG_ON(!vaddr || !pgtable_pte_page_ctor(virt_to_page(vaddr)));
+
return __pa(vaddr);
}
@@ -236,6 +296,12 @@ pmd_t fixmap_pmd[PTRS_PER_PMD] __page_aligned_bss;
pmd_t early_pmd[PTRS_PER_PMD] __initdata __aligned(PAGE_SIZE);
pmd_t early_dtb_pmd[PTRS_PER_PMD] __initdata __aligned(PAGE_SIZE);
+#ifdef CONFIG_XIP_KERNEL
+#define trampoline_pmd ((pmd_t *)XIP_FIXUP(trampoline_pmd))
+#define fixmap_pmd ((pmd_t *)XIP_FIXUP(fixmap_pmd))
+#define early_pmd ((pmd_t *)XIP_FIXUP(early_pmd))
+#endif /* CONFIG_XIP_KERNEL */
+
static pmd_t *__init get_pmd_virt_early(phys_addr_t pa)
{
/* Before MMU is enabled */
@@ -255,7 +321,7 @@ static pmd_t *get_pmd_virt_late(phys_addr_t pa)
static phys_addr_t __init alloc_pmd_early(uintptr_t va)
{
- BUG_ON((va - PAGE_OFFSET) >> PGDIR_SHIFT);
+ BUG_ON((va - kernel_virt_addr) >> PGDIR_SHIFT);
return (uintptr_t)early_pmd;
}
@@ -352,6 +418,19 @@ static uintptr_t __init best_map_size(phys_addr_t base, phys_addr_t size)
return PMD_SIZE;
}
+#ifdef CONFIG_XIP_KERNEL
+/* called from head.S with MMU off */
+asmlinkage void __init __copy_data(void)
+{
+ void *from = (void *)(&_sdata);
+ void *end = (void *)(&_end);
+ void *to = (void *)CONFIG_PHYS_RAM_BASE;
+ size_t sz = (size_t)(end - from + 1);
+
+ memcpy(to, from, sz);
+}
+#endif
+
/*
* setup_vm() is called from head.S with MMU-off.
*
@@ -370,17 +449,74 @@ static uintptr_t __init best_map_size(phys_addr_t base, phys_addr_t size)
#error "setup_vm() is called from head.S before relocate so it should not use absolute addressing."
#endif
+uintptr_t load_pa, load_sz;
+#ifdef CONFIG_XIP_KERNEL
+#define load_pa (*((uintptr_t *)XIP_FIXUP(&load_pa)))
+#define load_sz (*((uintptr_t *)XIP_FIXUP(&load_sz)))
+#endif
+
+#ifdef CONFIG_XIP_KERNEL
+uintptr_t xiprom, xiprom_sz;
+#define xiprom_sz (*((uintptr_t *)XIP_FIXUP(&xiprom_sz)))
+#define xiprom (*((uintptr_t *)XIP_FIXUP(&xiprom)))
+
+static void __init create_kernel_page_table(pgd_t *pgdir, uintptr_t map_size)
+{
+ uintptr_t va, end_va;
+
+ /* Map the flash resident part */
+ end_va = kernel_virt_addr + xiprom_sz;
+ for (va = kernel_virt_addr; va < end_va; va += map_size)
+ create_pgd_mapping(pgdir, va,
+ xiprom + (va - kernel_virt_addr),
+ map_size, PAGE_KERNEL_EXEC);
+
+ /* Map the data in RAM */
+ end_va = kernel_virt_addr + XIP_OFFSET + load_sz;
+ for (va = kernel_virt_addr + XIP_OFFSET; va < end_va; va += map_size)
+ create_pgd_mapping(pgdir, va,
+ load_pa + (va - (kernel_virt_addr + XIP_OFFSET)),
+ map_size, PAGE_KERNEL);
+}
+#else
+static void __init create_kernel_page_table(pgd_t *pgdir, uintptr_t map_size)
+{
+ uintptr_t va, end_va;
+
+ end_va = kernel_virt_addr + load_sz;
+ for (va = kernel_virt_addr; va < end_va; va += map_size)
+ create_pgd_mapping(pgdir, va,
+ load_pa + (va - kernel_virt_addr),
+ map_size, PAGE_KERNEL_EXEC);
+}
+#endif
+
asmlinkage void __init setup_vm(uintptr_t dtb_pa)
{
- uintptr_t va, pa, end_va;
- uintptr_t load_pa = (uintptr_t)(&_start);
- uintptr_t load_sz = (uintptr_t)(&_end) - load_pa;
+ uintptr_t __maybe_unused pa;
uintptr_t map_size;
#ifndef __PAGETABLE_PMD_FOLDED
pmd_t fix_bmap_spmd, fix_bmap_epmd;
#endif
+#ifdef CONFIG_XIP_KERNEL
+ xiprom = (uintptr_t)CONFIG_XIP_PHYS_ADDR;
+ xiprom_sz = (uintptr_t)(&_exiprom) - (uintptr_t)(&_xiprom);
+
+ load_pa = (uintptr_t)CONFIG_PHYS_RAM_BASE;
+ load_sz = (uintptr_t)(&_end) - (uintptr_t)(&_sdata);
+
+ va_kernel_xip_pa_offset = kernel_virt_addr - xiprom;
+#else
+ load_pa = (uintptr_t)(&_start);
+ load_sz = (uintptr_t)(&_end) - load_pa;
+#endif
+
va_pa_offset = PAGE_OFFSET - load_pa;
+#ifdef CONFIG_64BIT
+ va_kernel_pa_offset = kernel_virt_addr - load_pa;
+#endif
+
pfn_base = PFN_DOWN(load_pa);
/*
@@ -408,26 +544,27 @@ asmlinkage void __init setup_vm(uintptr_t dtb_pa)
create_pmd_mapping(fixmap_pmd, FIXADDR_START,
(uintptr_t)fixmap_pte, PMD_SIZE, PAGE_TABLE);
/* Setup trampoline PGD and PMD */
- create_pgd_mapping(trampoline_pg_dir, PAGE_OFFSET,
+ create_pgd_mapping(trampoline_pg_dir, kernel_virt_addr,
(uintptr_t)trampoline_pmd, PGDIR_SIZE, PAGE_TABLE);
- create_pmd_mapping(trampoline_pmd, PAGE_OFFSET,
+#ifdef CONFIG_XIP_KERNEL
+ create_pmd_mapping(trampoline_pmd, kernel_virt_addr,
+ xiprom, PMD_SIZE, PAGE_KERNEL_EXEC);
+#else
+ create_pmd_mapping(trampoline_pmd, kernel_virt_addr,
load_pa, PMD_SIZE, PAGE_KERNEL_EXEC);
+#endif
#else
/* Setup trampoline PGD */
- create_pgd_mapping(trampoline_pg_dir, PAGE_OFFSET,
+ create_pgd_mapping(trampoline_pg_dir, kernel_virt_addr,
load_pa, PGDIR_SIZE, PAGE_KERNEL_EXEC);
#endif
/*
- * Setup early PGD covering entire kernel which will allows
+ * Setup early PGD covering entire kernel which will allow
* us to reach paging_init(). We map all memory banks later
* in setup_vm_final() below.
*/
- end_va = PAGE_OFFSET + load_sz;
- for (va = PAGE_OFFSET; va < end_va; va += map_size)
- create_pgd_mapping(early_pg_dir, va,
- load_pa + (va - PAGE_OFFSET),
- map_size, PAGE_KERNEL_EXEC);
+ create_kernel_page_table(early_pg_dir, map_size);
#ifndef __PAGETABLE_PMD_FOLDED
/* Setup early PMD for DTB */
@@ -442,7 +579,16 @@ asmlinkage void __init setup_vm(uintptr_t dtb_pa)
pa + PMD_SIZE, PMD_SIZE, PAGE_KERNEL);
dtb_early_va = (void *)DTB_EARLY_BASE_VA + (dtb_pa & (PMD_SIZE - 1));
#else /* CONFIG_BUILTIN_DTB */
+#ifdef CONFIG_64BIT
+ /*
+ * __va can't be used since it would return a linear mapping address
+ * whereas dtb_early_va will be used before setup_vm_final installs
+ * the linear mapping.
+ */
+ dtb_early_va = kernel_mapping_pa_to_va(XIP_FIXUP(dtb_pa));
+#else
dtb_early_va = __va(dtb_pa);
+#endif /* CONFIG_64BIT */
#endif /* CONFIG_BUILTIN_DTB */
#else
#ifndef CONFIG_BUILTIN_DTB
@@ -454,7 +600,11 @@ asmlinkage void __init setup_vm(uintptr_t dtb_pa)
pa + PGDIR_SIZE, PGDIR_SIZE, PAGE_KERNEL);
dtb_early_va = (void *)DTB_EARLY_BASE_VA + (dtb_pa & (PGDIR_SIZE - 1));
#else /* CONFIG_BUILTIN_DTB */
+#ifdef CONFIG_64BIT
+ dtb_early_va = kernel_mapping_pa_to_va(XIP_FIXUP(dtb_pa));
+#else
dtb_early_va = __va(dtb_pa);
+#endif /* CONFIG_64BIT */
#endif /* CONFIG_BUILTIN_DTB */
#endif
dtb_early_pa = dtb_pa;
@@ -490,6 +640,22 @@ asmlinkage void __init setup_vm(uintptr_t dtb_pa)
#endif
}
+#if defined(CONFIG_64BIT) && !defined(CONFIG_XIP_KERNEL)
+void protect_kernel_linear_mapping_text_rodata(void)
+{
+ unsigned long text_start = (unsigned long)lm_alias(_start);
+ unsigned long init_text_start = (unsigned long)lm_alias(__init_text_begin);
+ unsigned long rodata_start = (unsigned long)lm_alias(__start_rodata);
+ unsigned long data_start = (unsigned long)lm_alias(_data);
+
+ set_memory_ro(text_start, (init_text_start - text_start) >> PAGE_SHIFT);
+ set_memory_nx(text_start, (init_text_start - text_start) >> PAGE_SHIFT);
+
+ set_memory_ro(rodata_start, (data_start - rodata_start) >> PAGE_SHIFT);
+ set_memory_nx(rodata_start, (data_start - rodata_start) >> PAGE_SHIFT);
+}
+#endif
+
static void __init setup_vm_final(void)
{
uintptr_t va, map_size;
@@ -511,7 +677,7 @@ static void __init setup_vm_final(void)
__pa_symbol(fixmap_pgd_next),
PGDIR_SIZE, PAGE_TABLE);
- /* Map all memory banks */
+ /* Map all memory banks in the linear mapping */
for_each_mem_range(i, &start, &end) {
if (start >= end)
break;
@@ -523,10 +689,22 @@ static void __init setup_vm_final(void)
for (pa = start; pa < end; pa += map_size) {
va = (uintptr_t)__va(pa);
create_pgd_mapping(swapper_pg_dir, va, pa,
- map_size, PAGE_KERNEL_EXEC);
+ map_size,
+#ifdef CONFIG_64BIT
+ PAGE_KERNEL
+#else
+ PAGE_KERNEL_EXEC
+#endif
+ );
+
}
}
+#ifdef CONFIG_64BIT
+ /* Map the kernel */
+ create_kernel_page_table(swapper_pg_dir, PMD_SIZE);
+#endif
+
/* Clear fixmap PTE and PMD mappings */
clear_fixmap(FIX_PTE);
clear_fixmap(FIX_PMD);
@@ -556,7 +734,7 @@ static inline void setup_vm_final(void)
#endif /* CONFIG_MMU */
#ifdef CONFIG_STRICT_KERNEL_RWX
-void protect_kernel_text_data(void)
+void __init protect_kernel_text_data(void)
{
unsigned long text_start = (unsigned long)_start;
unsigned long init_text_start = (unsigned long)__init_text_begin;
@@ -584,6 +762,103 @@ void mark_rodata_ro(void)
}
#endif
+#ifdef CONFIG_KEXEC_CORE
+/*
+ * reserve_crashkernel() - reserves memory for crash kernel
+ *
+ * This function reserves memory area given in "crashkernel=" kernel command
+ * line parameter. The memory reserved is used by dump capture kernel when
+ * primary kernel is crashing.
+ */
+static void __init reserve_crashkernel(void)
+{
+ unsigned long long crash_base = 0;
+ unsigned long long crash_size = 0;
+ unsigned long search_start = memblock_start_of_DRAM();
+ unsigned long search_end = memblock_end_of_DRAM();
+
+ int ret = 0;
+
+ /*
+ * Don't reserve a region for a crash kernel on a crash kernel
+ * since it doesn't make much sense and we have limited memory
+ * resources.
+ */
+#ifdef CONFIG_CRASH_DUMP
+ if (is_kdump_kernel()) {
+ pr_info("crashkernel: ignoring reservation request\n");
+ return;
+ }
+#endif
+
+ ret = parse_crashkernel(boot_command_line, memblock_phys_mem_size(),
+ &crash_size, &crash_base);
+ if (ret || !crash_size)
+ return;
+
+ crash_size = PAGE_ALIGN(crash_size);
+
+ if (crash_base == 0) {
+ /*
+ * Current riscv boot protocol requires 2MB alignment for
+ * RV64 and 4MB alignment for RV32 (hugepage size)
+ */
+ crash_base = memblock_find_in_range(search_start, search_end,
+ crash_size, PMD_SIZE);
+
+ if (crash_base == 0) {
+ pr_warn("crashkernel: couldn't allocate %lldKB\n",
+ crash_size >> 10);
+ return;
+ }
+ } else {
+ /* User specifies base address explicitly. */
+ if (!memblock_is_region_memory(crash_base, crash_size)) {
+ pr_warn("crashkernel: requested region is not memory\n");
+ return;
+ }
+
+ if (memblock_is_region_reserved(crash_base, crash_size)) {
+ pr_warn("crashkernel: requested region is reserved\n");
+ return;
+ }
+
+
+ if (!IS_ALIGNED(crash_base, PMD_SIZE)) {
+ pr_warn("crashkernel: requested region is misaligned\n");
+ return;
+ }
+ }
+ memblock_reserve(crash_base, crash_size);
+
+ pr_info("crashkernel: reserved 0x%016llx - 0x%016llx (%lld MB)\n",
+ crash_base, crash_base + crash_size, crash_size >> 20);
+
+ crashk_res.start = crash_base;
+ crashk_res.end = crash_base + crash_size - 1;
+}
+#endif /* CONFIG_KEXEC_CORE */
+
+#ifdef CONFIG_CRASH_DUMP
+/*
+ * We keep track of the ELF core header of the crashed
+ * kernel with a reserved-memory region with compatible
+ * string "linux,elfcorehdr". Here we register a callback
+ * to populate elfcorehdr_addr/size when this region is
+ * present. Note that this region will be marked as
+ * reserved once we call early_init_fdt_scan_reserved_mem()
+ * later on.
+ */
+static int elfcore_hdr_setup(struct reserved_mem *rmem)
+{
+ elfcorehdr_addr = rmem->base;
+ elfcorehdr_size = rmem->size;
+ return 0;
+}
+
+RESERVEDMEM_OF_DECLARE(elfcorehdr, "linux,elfcorehdr", elfcore_hdr_setup);
+#endif
+
void __init paging_init(void)
{
setup_vm_final();
@@ -592,9 +867,13 @@ void __init paging_init(void)
void __init misc_mem_init(void)
{
+ early_memtest(min_low_pfn << PAGE_SHIFT, max_low_pfn << PAGE_SHIFT);
arch_numa_init();
sparse_init();
zone_sizes_init();
+#ifdef CONFIG_KEXEC_CORE
+ reserve_crashkernel();
+#endif
memblock_dump_all();
}
diff --git a/arch/riscv/mm/kasan_init.c b/arch/riscv/mm/kasan_init.c
index 937d13ce9ab8..9daacae93e33 100644
--- a/arch/riscv/mm/kasan_init.c
+++ b/arch/riscv/mm/kasan_init.c
@@ -11,18 +11,6 @@
#include <asm/fixmap.h>
#include <asm/pgalloc.h>
-static __init void *early_alloc(size_t size, int node)
-{
- void *ptr = memblock_alloc_try_nid(size, size,
- __pa(MAX_DMA_ADDRESS), MEMBLOCK_ALLOC_ACCESSIBLE, node);
-
- if (!ptr)
- panic("%pS: Failed to allocate %zu bytes align=%zx nid=%d from=%llx\n",
- __func__, size, size, node, (u64)__pa(MAX_DMA_ADDRESS));
-
- return ptr;
-}
-
extern pgd_t early_pg_dir[PTRS_PER_PGD];
asmlinkage void __init kasan_early_init(void)
{
@@ -60,7 +48,7 @@ asmlinkage void __init kasan_early_init(void)
local_flush_tlb_all();
}
-static void kasan_populate_pte(pmd_t *pmd, unsigned long vaddr, unsigned long end)
+static void __init kasan_populate_pte(pmd_t *pmd, unsigned long vaddr, unsigned long end)
{
phys_addr_t phys_addr;
pte_t *ptep, *base_pte;
@@ -82,7 +70,7 @@ static void kasan_populate_pte(pmd_t *pmd, unsigned long vaddr, unsigned long en
set_pmd(pmd, pfn_pmd(PFN_DOWN(__pa(base_pte)), PAGE_TABLE));
}
-static void kasan_populate_pmd(pgd_t *pgd, unsigned long vaddr, unsigned long end)
+static void __init kasan_populate_pmd(pgd_t *pgd, unsigned long vaddr, unsigned long end)
{
phys_addr_t phys_addr;
pmd_t *pmdp, *base_pmd;
@@ -117,7 +105,7 @@ static void kasan_populate_pmd(pgd_t *pgd, unsigned long vaddr, unsigned long en
set_pgd(pgd, pfn_pgd(PFN_DOWN(__pa(base_pmd)), PAGE_TABLE));
}
-static void kasan_populate_pgd(unsigned long vaddr, unsigned long end)
+static void __init kasan_populate_pgd(unsigned long vaddr, unsigned long end)
{
phys_addr_t phys_addr;
pgd_t *pgdp = pgd_offset_k(vaddr);
@@ -155,39 +143,27 @@ static void __init kasan_populate(void *start, void *end)
memset(start, KASAN_SHADOW_INIT, end - start);
}
+static void __init kasan_shallow_populate_pgd(unsigned long vaddr, unsigned long end)
+{
+ unsigned long next;
+ void *p;
+ pgd_t *pgd_k = pgd_offset_k(vaddr);
+
+ do {
+ next = pgd_addr_end(vaddr, end);
+ if (pgd_page_vaddr(*pgd_k) == (unsigned long)lm_alias(kasan_early_shadow_pmd)) {
+ p = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
+ set_pgd(pgd_k, pfn_pgd(PFN_DOWN(__pa(p)), PAGE_TABLE));
+ }
+ } while (pgd_k++, vaddr = next, vaddr != end);
+}
+
static void __init kasan_shallow_populate(void *start, void *end)
{
unsigned long vaddr = (unsigned long)start & PAGE_MASK;
unsigned long vend = PAGE_ALIGN((unsigned long)end);
- unsigned long pfn;
- int index;
- void *p;
- pud_t *pud_dir, *pud_k;
- pgd_t *pgd_dir, *pgd_k;
- p4d_t *p4d_dir, *p4d_k;
-
- while (vaddr < vend) {
- index = pgd_index(vaddr);
- pfn = csr_read(CSR_SATP) & SATP_PPN;
- pgd_dir = (pgd_t *)pfn_to_virt(pfn) + index;
- pgd_k = init_mm.pgd + index;
- pgd_dir = pgd_offset_k(vaddr);
- set_pgd(pgd_dir, *pgd_k);
-
- p4d_dir = p4d_offset(pgd_dir, vaddr);
- p4d_k = p4d_offset(pgd_k, vaddr);
-
- vaddr = (vaddr + PUD_SIZE) & PUD_MASK;
- pud_dir = pud_offset(p4d_dir, vaddr);
- pud_k = pud_offset(p4d_k, vaddr);
-
- if (pud_present(*pud_dir)) {
- p = early_alloc(PAGE_SIZE, NUMA_NO_NODE);
- pud_populate(&init_mm, pud_dir, p);
- }
- vaddr += PAGE_SIZE;
- }
+ kasan_shallow_populate_pgd(vaddr, vend);
local_flush_tlb_all();
}
@@ -196,6 +172,10 @@ void __init kasan_init(void)
phys_addr_t _start, _end;
u64 i;
+ /*
+ * Populate all kernel virtual address space with kasan_early_shadow_page
+ * except for the linear mapping and the modules/kernel/BPF mapping.
+ */
kasan_populate_early_shadow((void *)KASAN_SHADOW_START,
(void *)kasan_mem_to_shadow((void *)
VMEMMAP_END));
@@ -208,6 +188,7 @@ void __init kasan_init(void)
(void *)kasan_mem_to_shadow((void *)VMALLOC_START),
(void *)kasan_mem_to_shadow((void *)VMALLOC_END));
+ /* Populate the linear mapping */
for_each_mem_range(i, &_start, &_end) {
void *start = (void *)__va(_start);
void *end = (void *)__va(_end);
@@ -218,6 +199,10 @@ void __init kasan_init(void)
kasan_populate(kasan_mem_to_shadow(start), kasan_mem_to_shadow(end));
}
+ /* Populate kernel, BPF, modules mapping */
+ kasan_populate(kasan_mem_to_shadow((const void *)MODULES_VADDR),
+ kasan_mem_to_shadow((const void *)BPF_JIT_REGION_END));
+
for (i = 0; i < PTRS_PER_PTE; i++)
set_pte(&kasan_early_shadow_pte[i],
mk_pte(virt_to_page(kasan_early_shadow_page),
diff --git a/arch/riscv/mm/physaddr.c b/arch/riscv/mm/physaddr.c
index e8e4dcd39fed..35703d5ef5fd 100644
--- a/arch/riscv/mm/physaddr.c
+++ b/arch/riscv/mm/physaddr.c
@@ -23,7 +23,7 @@ EXPORT_SYMBOL(__virt_to_phys);
phys_addr_t __phys_addr_symbol(unsigned long x)
{
- unsigned long kernel_start = (unsigned long)PAGE_OFFSET;
+ unsigned long kernel_start = (unsigned long)kernel_virt_addr;
unsigned long kernel_end = (unsigned long)_end;
/*
diff --git a/arch/riscv/mm/ptdump.c b/arch/riscv/mm/ptdump.c
index ace74dec7492..0536ac84b730 100644
--- a/arch/riscv/mm/ptdump.c
+++ b/arch/riscv/mm/ptdump.c
@@ -58,29 +58,56 @@ struct ptd_mm_info {
unsigned long end;
};
+enum address_markers_idx {
+#ifdef CONFIG_KASAN
+ KASAN_SHADOW_START_NR,
+ KASAN_SHADOW_END_NR,
+#endif
+ FIXMAP_START_NR,
+ FIXMAP_END_NR,
+ PCI_IO_START_NR,
+ PCI_IO_END_NR,
+#ifdef CONFIG_SPARSEMEM_VMEMMAP
+ VMEMMAP_START_NR,
+ VMEMMAP_END_NR,
+#endif
+ VMALLOC_START_NR,
+ VMALLOC_END_NR,
+ PAGE_OFFSET_NR,
+#ifdef CONFIG_64BIT
+ MODULES_MAPPING_NR,
+ KERNEL_MAPPING_NR,
+#endif
+ END_OF_SPACE_NR
+};
+
static struct addr_marker address_markers[] = {
#ifdef CONFIG_KASAN
- {KASAN_SHADOW_START, "Kasan shadow start"},
- {KASAN_SHADOW_END, "Kasan shadow end"},
+ {0, "Kasan shadow start"},
+ {0, "Kasan shadow end"},
#endif
- {FIXADDR_START, "Fixmap start"},
- {FIXADDR_TOP, "Fixmap end"},
- {PCI_IO_START, "PCI I/O start"},
- {PCI_IO_END, "PCI I/O end"},
+ {0, "Fixmap start"},
+ {0, "Fixmap end"},
+ {0, "PCI I/O start"},
+ {0, "PCI I/O end"},
#ifdef CONFIG_SPARSEMEM_VMEMMAP
- {VMEMMAP_START, "vmemmap start"},
- {VMEMMAP_END, "vmemmap end"},
+ {0, "vmemmap start"},
+ {0, "vmemmap end"},
+#endif
+ {0, "vmalloc() area"},
+ {0, "vmalloc() end"},
+ {0, "Linear mapping"},
+#ifdef CONFIG_64BIT
+ {0, "Modules mapping"},
+ {0, "Kernel mapping (kernel, BPF)"},
#endif
- {VMALLOC_START, "vmalloc() area"},
- {VMALLOC_END, "vmalloc() end"},
- {PAGE_OFFSET, "Linear mapping"},
{-1, NULL},
};
static struct ptd_mm_info kernel_ptd_info = {
.mm = &init_mm,
.markers = address_markers,
- .base_addr = KERN_VIRT_START,
+ .base_addr = 0,
.end = ULONG_MAX,
};
@@ -331,10 +358,32 @@ static int ptdump_show(struct seq_file *m, void *v)
DEFINE_SHOW_ATTRIBUTE(ptdump);
-static int ptdump_init(void)
+static int __init ptdump_init(void)
{
unsigned int i, j;
+#ifdef CONFIG_KASAN
+ address_markers[KASAN_SHADOW_START_NR].start_address = KASAN_SHADOW_START;
+ address_markers[KASAN_SHADOW_END_NR].start_address = KASAN_SHADOW_END;
+#endif
+ address_markers[FIXMAP_START_NR].start_address = FIXADDR_START;
+ address_markers[FIXMAP_END_NR].start_address = FIXADDR_TOP;
+ address_markers[PCI_IO_START_NR].start_address = PCI_IO_START;
+ address_markers[PCI_IO_END_NR].start_address = PCI_IO_END;
+#ifdef CONFIG_SPARSEMEM_VMEMMAP
+ address_markers[VMEMMAP_START_NR].start_address = VMEMMAP_START;
+ address_markers[VMEMMAP_END_NR].start_address = VMEMMAP_END;
+#endif
+ address_markers[VMALLOC_START_NR].start_address = VMALLOC_START;
+ address_markers[VMALLOC_END_NR].start_address = VMALLOC_END;
+ address_markers[PAGE_OFFSET_NR].start_address = PAGE_OFFSET;
+#ifdef CONFIG_64BIT
+ address_markers[MODULES_MAPPING_NR].start_address = MODULES_VADDR;
+ address_markers[KERNEL_MAPPING_NR].start_address = kernel_virt_addr;
+#endif
+
+ kernel_ptd_info.base_addr = KERN_VIRT_START;
+
for (i = 0; i < ARRAY_SIZE(pg_level); i++)
for (j = 0; j < ARRAY_SIZE(pte_bits); j++)
pg_level[i].mask |= pte_bits[j].mask;
diff --git a/arch/riscv/net/bpf_jit_comp64.c b/arch/riscv/net/bpf_jit_comp64.c
index b44ff52f84a6..87e3bf5b9086 100644
--- a/arch/riscv/net/bpf_jit_comp64.c
+++ b/arch/riscv/net/bpf_jit_comp64.c
@@ -1148,16 +1148,3 @@ void bpf_jit_build_epilogue(struct rv_jit_context *ctx)
{
__build_epilogue(false, ctx);
}
-
-void *bpf_jit_alloc_exec(unsigned long size)
-{
- return __vmalloc_node_range(size, PAGE_SIZE, BPF_JIT_REGION_START,
- BPF_JIT_REGION_END, GFP_KERNEL,
- PAGE_KERNEL_EXEC, 0, NUMA_NO_NODE,
- __builtin_return_address(0));
-}
-
-void bpf_jit_free_exec(void *addr)
-{
- return vfree(addr);
-}
diff --git a/arch/riscv/net/bpf_jit_core.c b/arch/riscv/net/bpf_jit_core.c
index 3630d447352c..fed86f42dfbe 100644
--- a/arch/riscv/net/bpf_jit_core.c
+++ b/arch/riscv/net/bpf_jit_core.c
@@ -152,6 +152,7 @@ skip_init_ctx:
bpf_flush_icache(jit_data->header, ctx->insns + ctx->ninsns);
if (!prog->is_func || extra_pass) {
+ bpf_jit_binary_lock_ro(jit_data->header);
out_offset:
kfree(ctx->offset);
kfree(jit_data);
@@ -164,3 +165,16 @@ out:
tmp : orig_prog);
return prog;
}
+
+void *bpf_jit_alloc_exec(unsigned long size)
+{
+ return __vmalloc_node_range(size, PAGE_SIZE, BPF_JIT_REGION_START,
+ BPF_JIT_REGION_END, GFP_KERNEL,
+ PAGE_KERNEL, 0, NUMA_NO_NODE,
+ __builtin_return_address(0));
+}
+
+void bpf_jit_free_exec(void *addr)
+{
+ return vfree(addr);
+}
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index c1ff874e6c2e..b4c7c34069f8 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -60,6 +60,9 @@ config S390
imply IMA_SECURE_AND_OR_TRUSTED_BOOT
select ARCH_32BIT_USTAT_F_TINODE
select ARCH_BINFMT_ELF_STATE
+ select ARCH_ENABLE_MEMORY_HOTPLUG if SPARSEMEM
+ select ARCH_ENABLE_MEMORY_HOTREMOVE
+ select ARCH_ENABLE_SPLIT_PMD_PTLOCK
select ARCH_HAS_DEBUG_VM_PGTABLE
select ARCH_HAS_DEBUG_WX
select ARCH_HAS_DEVMEM_IS_ALLOWED
@@ -137,6 +140,7 @@ config S390
select HAVE_ARCH_JUMP_LABEL_RELATIVE
select HAVE_ARCH_KASAN
select HAVE_ARCH_KASAN_VMALLOC
+ select HAVE_ARCH_RANDOMIZE_KSTACK_OFFSET
select HAVE_ARCH_SECCOMP_FILTER
select HAVE_ARCH_SOFT_DIRTY
select HAVE_ARCH_TRACEHOOK
@@ -626,15 +630,6 @@ config ARCH_SPARSEMEM_ENABLE
config ARCH_SPARSEMEM_DEFAULT
def_bool y
-config ARCH_ENABLE_MEMORY_HOTPLUG
- def_bool y if SPARSEMEM
-
-config ARCH_ENABLE_MEMORY_HOTREMOVE
- def_bool y
-
-config ARCH_ENABLE_SPLIT_PMD_PTLOCK
- def_bool y
-
config MAX_PHYSMEM_BITS
int "Maximum size of supported physical memory in bits (42-53)"
range 42 53
diff --git a/arch/s390/configs/debug_defconfig b/arch/s390/configs/debug_defconfig
index 6422618a4f75..86afcc6b56bf 100644
--- a/arch/s390/configs/debug_defconfig
+++ b/arch/s390/configs/debug_defconfig
@@ -387,6 +387,7 @@ CONFIG_CGROUP_NET_PRIO=y
CONFIG_BPF_JIT=y
CONFIG_NET_PKTGEN=m
CONFIG_PCI=y
+CONFIG_PCI_IOV=y
# CONFIG_PCIEASPM is not set
CONFIG_PCI_DEBUG=y
CONFIG_HOTPLUG_PCI=y
@@ -548,7 +549,7 @@ CONFIG_INPUT_EVDEV=y
# CONFIG_INPUT_MOUSE is not set
# CONFIG_SERIO is not set
CONFIG_LEGACY_PTY_COUNT=0
-CONFIG_VIRTIO_CONSOLE=y
+CONFIG_VIRTIO_CONSOLE=m
CONFIG_HW_RANDOM_VIRTIO=m
CONFIG_RAW_DRIVER=m
CONFIG_HANGCHECK_TIMER=m
diff --git a/arch/s390/configs/defconfig b/arch/s390/configs/defconfig
index 371a529546aa..71b49ea5b058 100644
--- a/arch/s390/configs/defconfig
+++ b/arch/s390/configs/defconfig
@@ -377,6 +377,7 @@ CONFIG_CGROUP_NET_PRIO=y
CONFIG_BPF_JIT=y
CONFIG_NET_PKTGEN=m
CONFIG_PCI=y
+CONFIG_PCI_IOV=y
# CONFIG_PCIEASPM is not set
CONFIG_HOTPLUG_PCI=y
CONFIG_HOTPLUG_PCI_S390=y
@@ -540,7 +541,7 @@ CONFIG_INPUT_EVDEV=y
# CONFIG_INPUT_MOUSE is not set
# CONFIG_SERIO is not set
CONFIG_LEGACY_PTY_COUNT=0
-CONFIG_VIRTIO_CONSOLE=y
+CONFIG_VIRTIO_CONSOLE=m
CONFIG_HW_RANDOM_VIRTIO=m
CONFIG_RAW_DRIVER=m
CONFIG_HANGCHECK_TIMER=m
diff --git a/arch/s390/include/asm/cpu_mcf.h b/arch/s390/include/asm/cpu_mcf.h
index 649b9fc60685..3e4cbcb7c4cc 100644
--- a/arch/s390/include/asm/cpu_mcf.h
+++ b/arch/s390/include/asm/cpu_mcf.h
@@ -123,4 +123,6 @@ static inline int stccm_avail(void)
return test_facility(142);
}
+size_t cpum_cf_ctrset_size(enum cpumf_ctr_set ctrset,
+ struct cpumf_ctr_info *info);
#endif /* _ASM_S390_CPU_MCF_H */
diff --git a/arch/s390/include/asm/entry-common.h b/arch/s390/include/asm/entry-common.h
index 9cceb26ed63f..baa8005090c3 100644
--- a/arch/s390/include/asm/entry-common.h
+++ b/arch/s390/include/asm/entry-common.h
@@ -4,9 +4,11 @@
#include <linux/sched.h>
#include <linux/audit.h>
+#include <linux/randomize_kstack.h>
#include <linux/tracehook.h>
#include <linux/processor.h>
#include <linux/uaccess.h>
+#include <asm/timex.h>
#include <asm/fpu/api.h>
#define ARCH_EXIT_TO_USER_MODE_WORK (_TIF_GUARDED_STORAGE | _TIF_PER_TRAP)
@@ -48,6 +50,14 @@ static __always_inline void arch_exit_to_user_mode(void)
#define arch_exit_to_user_mode arch_exit_to_user_mode
+static inline void arch_exit_to_user_mode_prepare(struct pt_regs *regs,
+ unsigned long ti_work)
+{
+ choose_random_kstack_offset(get_tod_clock_fast() & 0xff);
+}
+
+#define arch_exit_to_user_mode_prepare arch_exit_to_user_mode_prepare
+
static inline bool on_thread_stack(void)
{
return !(((unsigned long)(current->stack) ^ current_stack_pointer()) & ~(THREAD_SIZE - 1));
diff --git a/arch/s390/include/asm/io.h b/arch/s390/include/asm/io.h
index 28664ee0abc1..e3882b012bfa 100644
--- a/arch/s390/include/asm/io.h
+++ b/arch/s390/include/asm/io.h
@@ -20,11 +20,6 @@ void *xlate_dev_mem_ptr(phys_addr_t phys);
#define unxlate_dev_mem_ptr unxlate_dev_mem_ptr
void unxlate_dev_mem_ptr(phys_addr_t phys, void *addr);
-/*
- * Convert a virtual cached pointer to an uncached pointer
- */
-#define xlate_dev_kmem_ptr(p) p
-
#define IO_SPACE_LIMIT 0
void __iomem *ioremap_prot(phys_addr_t addr, size_t size, unsigned long prot);
diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h
index 35c2af9371a9..10b67f8aab99 100644
--- a/arch/s390/include/asm/pci.h
+++ b/arch/s390/include/asm/pci.h
@@ -204,7 +204,7 @@ extern unsigned int s390_pci_no_rid;
struct zpci_dev *zpci_create_device(u32 fid, u32 fh, enum zpci_state state);
int zpci_enable_device(struct zpci_dev *);
int zpci_disable_device(struct zpci_dev *);
-int zpci_configure_device(struct zpci_dev *zdev, u32 fh);
+int zpci_scan_configured_device(struct zpci_dev *zdev, u32 fh);
int zpci_deconfigure_device(struct zpci_dev *zdev);
int zpci_register_ioat(struct zpci_dev *, u8, u64, u64, u64);
diff --git a/arch/s390/kernel/perf_cpum_cf.c b/arch/s390/kernel/perf_cpum_cf.c
index b3beef64d3d4..31a605bcbc6e 100644
--- a/arch/s390/kernel/perf_cpum_cf.c
+++ b/arch/s390/kernel/perf_cpum_cf.c
@@ -230,9 +230,7 @@ static int __hw_perf_event_init(struct perf_event *event, unsigned int type)
/* No support for kernel space counters only */
} else if (!attr->exclude_kernel && attr->exclude_user) {
return -EOPNOTSUPP;
-
- /* Count user and kernel space */
- } else {
+ } else { /* Count user and kernel space */
if (ev >= ARRAY_SIZE(cpumf_generic_events_basic))
return -EOPNOTSUPP;
ev = cpumf_generic_events_basic[ev];
@@ -402,12 +400,12 @@ static void cpumf_pmu_stop(struct perf_event *event, int flags)
*/
if (!atomic_dec_return(&cpuhw->ctr_set[hwc->config_base]))
ctr_set_stop(&cpuhw->state, hwc->config_base);
- event->hw.state |= PERF_HES_STOPPED;
+ hwc->state |= PERF_HES_STOPPED;
}
if ((flags & PERF_EF_UPDATE) && !(hwc->state & PERF_HES_UPTODATE)) {
hw_perf_event_update(event);
- event->hw.state |= PERF_HES_UPTODATE;
+ hwc->state |= PERF_HES_UPTODATE;
}
}
@@ -430,8 +428,6 @@ static int cpumf_pmu_add(struct perf_event *event, int flags)
if (flags & PERF_EF_START)
cpumf_pmu_start(event, PERF_EF_RELOAD);
- perf_event_update_userpage(event);
-
return 0;
}
@@ -451,8 +447,6 @@ static void cpumf_pmu_del(struct perf_event *event, int flags)
*/
if (!atomic_read(&cpuhw->ctr_set[event->hw.config_base]))
ctr_set_disable(&cpuhw->state, event->hw.config_base);
-
- perf_event_update_userpage(event);
}
/*
diff --git a/arch/s390/kernel/perf_cpum_cf_common.c b/arch/s390/kernel/perf_cpum_cf_common.c
index 3bced89caffb..6d53215c8484 100644
--- a/arch/s390/kernel/perf_cpum_cf_common.c
+++ b/arch/s390/kernel/perf_cpum_cf_common.c
@@ -170,6 +170,52 @@ static int cpum_cf_offline_cpu(unsigned int cpu)
return cpum_cf_setup(cpu, PMC_RELEASE);
}
+/* Return the maximum possible counter set size (in number of 8 byte counters)
+ * depending on type and model number.
+ */
+size_t cpum_cf_ctrset_size(enum cpumf_ctr_set ctrset,
+ struct cpumf_ctr_info *info)
+{
+ size_t ctrset_size = 0;
+
+ switch (ctrset) {
+ case CPUMF_CTR_SET_BASIC:
+ if (info->cfvn >= 1)
+ ctrset_size = 6;
+ break;
+ case CPUMF_CTR_SET_USER:
+ if (info->cfvn == 1)
+ ctrset_size = 6;
+ else if (info->cfvn >= 3)
+ ctrset_size = 2;
+ break;
+ case CPUMF_CTR_SET_CRYPTO:
+ if (info->csvn >= 1 && info->csvn <= 5)
+ ctrset_size = 16;
+ else if (info->csvn == 6)
+ ctrset_size = 20;
+ break;
+ case CPUMF_CTR_SET_EXT:
+ if (info->csvn == 1)
+ ctrset_size = 32;
+ else if (info->csvn == 2)
+ ctrset_size = 48;
+ else if (info->csvn >= 3 && info->csvn <= 5)
+ ctrset_size = 128;
+ else if (info->csvn == 6)
+ ctrset_size = 160;
+ break;
+ case CPUMF_CTR_SET_MT_DIAG:
+ if (info->csvn > 3)
+ ctrset_size = 48;
+ break;
+ case CPUMF_CTR_SET_MAX:
+ break;
+ }
+
+ return ctrset_size;
+}
+
static int __init cpum_cf_init(void)
{
int rc;
diff --git a/arch/s390/kernel/perf_cpum_cf_diag.c b/arch/s390/kernel/perf_cpum_cf_diag.c
index 2e3e7edbe3a0..08c985c1097c 100644
--- a/arch/s390/kernel/perf_cpum_cf_diag.c
+++ b/arch/s390/kernel/perf_cpum_cf_diag.c
@@ -316,52 +316,6 @@ static void cf_diag_read(struct perf_event *event)
debug_sprintf_event(cf_diag_dbg, 5, "%s event %p\n", __func__, event);
}
-/* Return the maximum possible counter set size (in number of 8 byte counters)
- * depending on type and model number.
- */
-static size_t cf_diag_ctrset_size(enum cpumf_ctr_set ctrset,
- struct cpumf_ctr_info *info)
-{
- size_t ctrset_size = 0;
-
- switch (ctrset) {
- case CPUMF_CTR_SET_BASIC:
- if (info->cfvn >= 1)
- ctrset_size = 6;
- break;
- case CPUMF_CTR_SET_USER:
- if (info->cfvn == 1)
- ctrset_size = 6;
- else if (info->cfvn >= 3)
- ctrset_size = 2;
- break;
- case CPUMF_CTR_SET_CRYPTO:
- if (info->csvn >= 1 && info->csvn <= 5)
- ctrset_size = 16;
- else if (info->csvn == 6)
- ctrset_size = 20;
- break;
- case CPUMF_CTR_SET_EXT:
- if (info->csvn == 1)
- ctrset_size = 32;
- else if (info->csvn == 2)
- ctrset_size = 48;
- else if (info->csvn >= 3 && info->csvn <= 5)
- ctrset_size = 128;
- else if (info->csvn == 6)
- ctrset_size = 160;
- break;
- case CPUMF_CTR_SET_MT_DIAG:
- if (info->csvn > 3)
- ctrset_size = 48;
- break;
- case CPUMF_CTR_SET_MAX:
- break;
- }
-
- return ctrset_size;
-}
-
/* Calculate memory needed to store all counter sets together with header and
* trailer data. This is independend of the counter set authorization which
* can vary depending on the configuration.
@@ -372,7 +326,7 @@ static size_t cf_diag_ctrset_maxsize(struct cpumf_ctr_info *info)
enum cpumf_ctr_set i;
for (i = CPUMF_CTR_SET_BASIC; i < CPUMF_CTR_SET_MAX; ++i) {
- size_t size = cf_diag_ctrset_size(i, info);
+ size_t size = cpum_cf_ctrset_size(i, info);
if (size)
max_size += size * sizeof(u64) +
@@ -405,7 +359,7 @@ static size_t cf_diag_getctrset(struct cf_ctrset_entry *ctrdata, int ctrset,
ctrdata->def = CF_DIAG_CTRSET_DEF;
ctrdata->set = ctrset;
ctrdata->res1 = 0;
- ctrset_size = cf_diag_ctrset_size(ctrset, &cpuhw->info);
+ ctrset_size = cpum_cf_ctrset_size(ctrset, &cpuhw->info);
if (ctrset_size) { /* Save data */
need = ctrset_size * sizeof(u64) + sizeof(*ctrdata);
@@ -845,7 +799,7 @@ static void cf_diag_cpu_read(void *parm)
if (!(p->sets & cpumf_ctr_ctl[set]))
continue; /* Counter set not in list */
- set_size = cf_diag_ctrset_size(set, &cpuhw->info);
+ set_size = cpum_cf_ctrset_size(set, &cpuhw->info);
space = sizeof(csd->data) - csd->used;
space = cf_diag_cpuset_read(sp, set, set_size, space);
if (space) {
@@ -975,7 +929,7 @@ static size_t cf_diag_needspace(unsigned int sets)
for (i = CPUMF_CTR_SET_BASIC; i < CPUMF_CTR_SET_MAX; ++i) {
if (!(sets & cpumf_ctr_ctl[i]))
continue;
- bytes += cf_diag_ctrset_size(i, &cpuhw->info) * sizeof(u64) +
+ bytes += cpum_cf_ctrset_size(i, &cpuhw->info) * sizeof(u64) +
sizeof(((struct s390_ctrset_setdata *)0)->set) +
sizeof(((struct s390_ctrset_setdata *)0)->no_cnts);
}
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 72134f9f6ff5..5aab59ad5688 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -937,9 +937,9 @@ static int __init setup_hwcaps(void)
if (MACHINE_HAS_VX) {
elf_hwcap |= HWCAP_S390_VXRS;
if (test_facility(134))
- elf_hwcap |= HWCAP_S390_VXRS_EXT;
- if (test_facility(135))
elf_hwcap |= HWCAP_S390_VXRS_BCD;
+ if (test_facility(135))
+ elf_hwcap |= HWCAP_S390_VXRS_EXT;
if (test_facility(148))
elf_hwcap |= HWCAP_S390_VXRS_EXT2;
if (test_facility(152))
diff --git a/arch/s390/kernel/syscall.c b/arch/s390/kernel/syscall.c
index bc8e650e377d..4e5cc7d2364e 100644
--- a/arch/s390/kernel/syscall.c
+++ b/arch/s390/kernel/syscall.c
@@ -142,6 +142,7 @@ void do_syscall(struct pt_regs *regs)
void noinstr __do_syscall(struct pt_regs *regs, int per_trap)
{
+ add_random_kstack_offset();
enter_from_user_mode(regs);
memcpy(&regs->gprs[8], S390_lowcore.save_area_sync, 8 * sizeof(unsigned long));
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index 63021d484626..8dd23c703718 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -17,6 +17,7 @@
#include "asm/ptrace.h"
#include <linux/kprobes.h>
#include <linux/kdebug.h>
+#include <linux/randomize_kstack.h>
#include <linux/extable.h>
#include <linux/ptrace.h>
#include <linux/sched.h>
@@ -301,6 +302,7 @@ void noinstr __do_pgm_check(struct pt_regs *regs)
unsigned int trapnr, syscall_redirect = 0;
irqentry_state_t state;
+ add_random_kstack_offset();
regs->int_code = *(u32 *)&S390_lowcore.pgm_ilc;
regs->int_parm_long = S390_lowcore.trans_exc_code;
diff --git a/arch/s390/mm/hugetlbpage.c b/arch/s390/mm/hugetlbpage.c
index 3b5a4d25ca9b..da36d13ffc16 100644
--- a/arch/s390/mm/hugetlbpage.c
+++ b/arch/s390/mm/hugetlbpage.c
@@ -189,7 +189,7 @@ pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
return pte;
}
-pte_t *huge_pte_alloc(struct mm_struct *mm,
+pte_t *huge_pte_alloc(struct mm_struct *mm, struct vm_area_struct *vma,
unsigned long addr, unsigned long sz)
{
pgd_t *pgdp;
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index c01b6dbac7cf..b0993e05affe 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -738,17 +738,19 @@ error:
}
/**
- * zpci_configure_device() - Configure a zpci_dev
+ * zpci_scan_configured_device() - Scan a freshly configured zpci_dev
* @zdev: The zpci_dev to be configured
* @fh: The general function handle supplied by the platform
*
* Given a device in the configuration state Configured, enables, scans and
- * adds it to the common code PCI subsystem. If any failure occurs, the
- * zpci_dev is left disabled.
+ * adds it to the common code PCI subsystem if possible. If the PCI device is
+ * parked because we can not yet create a PCI bus because we have not seen
+ * function 0, it is ignored but will be scanned once function 0 appears.
+ * If any failure occurs, the zpci_dev is left disabled.
*
* Return: 0 on success, or an error code otherwise
*/
-int zpci_configure_device(struct zpci_dev *zdev, u32 fh)
+int zpci_scan_configured_device(struct zpci_dev *zdev, u32 fh)
{
int rc;
diff --git a/arch/s390/pci/pci_event.c b/arch/s390/pci/pci_event.c
index 1178b48a66df..cd447b96b4b1 100644
--- a/arch/s390/pci/pci_event.c
+++ b/arch/s390/pci/pci_event.c
@@ -76,8 +76,6 @@ void zpci_event_error(void *data)
static void zpci_event_hard_deconfigured(struct zpci_dev *zdev, u32 fh)
{
- enum zpci_state state;
-
zdev->fh = fh;
/* Give the driver a hint that the function is
* already unusable.
@@ -88,15 +86,12 @@ static void zpci_event_hard_deconfigured(struct zpci_dev *zdev, u32 fh)
*/
zpci_disable_device(zdev);
zdev->state = ZPCI_FN_STATE_STANDBY;
- if (!clp_get_state(zdev->fid, &state) &&
- state == ZPCI_FN_STATE_RESERVED) {
- zpci_zdev_put(zdev);
- }
}
static void __zpci_event_availability(struct zpci_ccdf_avail *ccdf)
{
struct zpci_dev *zdev = get_zdev_by_fid(ccdf->fid);
+ enum zpci_state state;
zpci_err("avail CCDF:\n");
zpci_err_hex(ccdf, sizeof(*ccdf));
@@ -113,7 +108,7 @@ static void __zpci_event_availability(struct zpci_ccdf_avail *ccdf)
break;
zdev->state = ZPCI_FN_STATE_CONFIGURED;
}
- zpci_configure_device(zdev, ccdf->fh);
+ zpci_scan_configured_device(zdev, ccdf->fh);
break;
case 0x0302: /* Reserved -> Standby */
if (!zdev)
@@ -123,13 +118,28 @@ 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 device.
+ */
+ if (zdev->state != ZPCI_FN_STATE_CONFIGURED)
+ break;
zdev->fh = ccdf->fh;
zpci_deconfigure_device(zdev);
}
break;
case 0x0304: /* Configured -> Standby|Reserved */
- if (zdev)
- zpci_event_hard_deconfigured(zdev, ccdf->fh);
+ if (zdev) {
+ /* The event may have been queued before we confirgured
+ * the device.:
+ */
+ if (zdev->state == ZPCI_FN_STATE_CONFIGURED)
+ zpci_event_hard_deconfigured(zdev, ccdf->fh);
+ /* The 0x0304 event may immediately reserve the device */
+ if (!clp_get_state(zdev->fid, &state) &&
+ state == ZPCI_FN_STATE_RESERVED) {
+ zpci_zdev_put(zdev);
+ }
+ }
break;
case 0x0306: /* 0x308 or 0x302 for multiple devices */
zpci_remove_reserved_devices();
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index e798e55915c2..68129537e350 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -2,6 +2,8 @@
config SUPERH
def_bool y
select ARCH_32BIT_OFF_T
+ select ARCH_ENABLE_MEMORY_HOTPLUG if SPARSEMEM && MMU
+ select ARCH_ENABLE_MEMORY_HOTREMOVE if SPARSEMEM && MMU
select ARCH_HAVE_CUSTOM_GPIO_H
select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
select ARCH_HAS_BINFMT_FLAT if !MMU
@@ -101,9 +103,6 @@ config SYS_SUPPORTS_APM_EMULATION
bool
select ARCH_SUSPEND_POSSIBLE
-config SYS_SUPPORTS_HUGETLBFS
- bool
-
config SYS_SUPPORTS_SMP
bool
@@ -175,12 +174,12 @@ config CPU_SH3
config CPU_SH4
bool
+ select ARCH_SUPPORTS_HUGETLBFS if MMU
select CPU_HAS_INTEVT
select CPU_HAS_SR_RB
select CPU_HAS_FPU if !CPU_SH4AL_DSP
select SH_INTC
select SYS_SUPPORTS_SH_TMU
- select SYS_SUPPORTS_HUGETLBFS if MMU
config CPU_SH4A
bool
diff --git a/arch/sh/configs/edosk7705_defconfig b/arch/sh/configs/edosk7705_defconfig
index ef7cc31997b1..9ee35269bee2 100644
--- a/arch/sh/configs/edosk7705_defconfig
+++ b/arch/sh/configs/edosk7705_defconfig
@@ -23,7 +23,6 @@ CONFIG_SH_PCLK_FREQ=31250000
# CONFIG_INPUT is not set
# CONFIG_SERIO is not set
# CONFIG_VT is not set
-# CONFIG_DEVKMEM is not set
# CONFIG_UNIX98_PTYS is not set
# CONFIG_LEGACY_PTYS is not set
# CONFIG_HW_RANDOM is not set
diff --git a/arch/sh/configs/se7206_defconfig b/arch/sh/configs/se7206_defconfig
index 315b04a8dd2f..601d062250d1 100644
--- a/arch/sh/configs/se7206_defconfig
+++ b/arch/sh/configs/se7206_defconfig
@@ -71,7 +71,6 @@ CONFIG_SMC91X=y
# CONFIG_INPUT is not set
# CONFIG_SERIO is not set
# CONFIG_VT is not set
-# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_SH_SCI=y
CONFIG_SERIAL_SH_SCI_NR_UARTS=4
CONFIG_SERIAL_SH_SCI_CONSOLE=y
diff --git a/arch/sh/configs/sh2007_defconfig b/arch/sh/configs/sh2007_defconfig
index 99975db461d8..79f02f1c0dc8 100644
--- a/arch/sh/configs/sh2007_defconfig
+++ b/arch/sh/configs/sh2007_defconfig
@@ -75,7 +75,6 @@ CONFIG_INPUT_FF_MEMLESS=y
# CONFIG_INPUT_MOUSE is not set
# CONFIG_SERIO is not set
CONFIG_VT_HW_CONSOLE_BINDING=y
-# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_SH_SCI=y
CONFIG_SERIAL_SH_SCI_CONSOLE=y
# CONFIG_LEGACY_PTYS is not set
diff --git a/arch/sh/configs/sh7724_generic_defconfig b/arch/sh/configs/sh7724_generic_defconfig
index 2c46c0004780..cbc9389a89a8 100644
--- a/arch/sh/configs/sh7724_generic_defconfig
+++ b/arch/sh/configs/sh7724_generic_defconfig
@@ -18,7 +18,6 @@ CONFIG_CPU_IDLE=y
# CONFIG_INPUT is not set
# CONFIG_SERIO is not set
# CONFIG_VT is not set
-# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_SH_SCI=y
CONFIG_SERIAL_SH_SCI_NR_UARTS=6
CONFIG_SERIAL_SH_SCI_CONSOLE=y
diff --git a/arch/sh/configs/sh7770_generic_defconfig b/arch/sh/configs/sh7770_generic_defconfig
index 88193153e51b..ee2357deba0f 100644
--- a/arch/sh/configs/sh7770_generic_defconfig
+++ b/arch/sh/configs/sh7770_generic_defconfig
@@ -20,7 +20,6 @@ CONFIG_CPU_IDLE=y
# CONFIG_INPUT is not set
# CONFIG_SERIO is not set
# CONFIG_VT is not set
-# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_SH_SCI=y
CONFIG_SERIAL_SH_SCI_NR_UARTS=6
CONFIG_SERIAL_SH_SCI_CONSOLE=y
diff --git a/arch/sh/configs/sh7785lcr_32bit_defconfig b/arch/sh/configs/sh7785lcr_32bit_defconfig
index 9b885c14c400..5c725c75fcef 100644
--- a/arch/sh/configs/sh7785lcr_32bit_defconfig
+++ b/arch/sh/configs/sh7785lcr_32bit_defconfig
@@ -66,7 +66,6 @@ CONFIG_INPUT_FF_MEMLESS=m
CONFIG_INPUT_EVDEV=y
CONFIG_INPUT_EVBUG=m
CONFIG_VT_HW_CONSOLE_BINDING=y
-# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_SH_SCI=y
CONFIG_SERIAL_SH_SCI_NR_UARTS=6
CONFIG_SERIAL_SH_SCI_CONSOLE=y
diff --git a/arch/sh/include/asm/bitops.h b/arch/sh/include/asm/bitops.h
index 450b5854d7c6..3b6c7b5b7ec9 100644
--- a/arch/sh/include/asm/bitops.h
+++ b/arch/sh/include/asm/bitops.h
@@ -58,15 +58,16 @@ static inline unsigned long __ffs(unsigned long word)
return result;
}
-#include <asm-generic/bitops/find.h>
#include <asm-generic/bitops/ffs.h>
#include <asm-generic/bitops/hweight.h>
#include <asm-generic/bitops/lock.h>
#include <asm-generic/bitops/sched.h>
-#include <asm-generic/bitops/le.h>
#include <asm-generic/bitops/ext2-atomic.h>
#include <asm-generic/bitops/fls.h>
#include <asm-generic/bitops/__fls.h>
#include <asm-generic/bitops/fls64.h>
+#include <asm-generic/bitops/le.h>
+#include <asm-generic/bitops/find.h>
+
#endif /* __ASM_SH_BITOPS_H */
diff --git a/arch/sh/include/asm/io.h b/arch/sh/include/asm/io.h
index 6d5c6463bc07..cf9a3ec32406 100644
--- a/arch/sh/include/asm/io.h
+++ b/arch/sh/include/asm/io.h
@@ -283,11 +283,6 @@ static inline void __iomem *ioremap_prot(phys_addr_t offset, unsigned long size,
*/
#define xlate_dev_mem_ptr(p) __va(p)
-/*
- * Convert a virtual cached pointer to an uncached pointer
- */
-#define xlate_dev_kmem_ptr(p) p
-
#define ARCH_HAS_VALID_PHYS_ADDR_RANGE
int valid_phys_addr_range(phys_addr_t addr, size_t size);
int valid_mmap_phys_addr_range(unsigned long pfn, size_t size);
diff --git a/arch/sh/kernel/ftrace.c b/arch/sh/kernel/ftrace.c
index 0646c5961846..295c43315bbe 100644
--- a/arch/sh/kernel/ftrace.c
+++ b/arch/sh/kernel/ftrace.c
@@ -67,7 +67,7 @@ static unsigned char *ftrace_call_replace(unsigned long ip, unsigned long addr)
* Modifying code must take extra care. On an SMP machine, if
* the code being modified is also being executed on another CPU
* that CPU will have undefined results and possibly take a GPF.
- * We use kstop_machine to stop other CPUS from exectuing code.
+ * We use kstop_machine to stop other CPUS from executing code.
* But this does not stop NMIs from happening. We still need
* to protect against that. We separate out the modification of
* the code to take care of this.
diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig
index 77aa2f802d8d..d551a9cac41e 100644
--- a/arch/sh/mm/Kconfig
+++ b/arch/sh/mm/Kconfig
@@ -136,14 +136,6 @@ config ARCH_SPARSEMEM_DEFAULT
config ARCH_SELECT_MEMORY_MODEL
def_bool y
-config ARCH_ENABLE_MEMORY_HOTPLUG
- def_bool y
- depends on SPARSEMEM && MMU
-
-config ARCH_ENABLE_MEMORY_HOTREMOVE
- def_bool y
- depends on SPARSEMEM && MMU
-
config ARCH_MEMORY_PROBE
def_bool y
depends on MEMORY_HOTPLUG
diff --git a/arch/sh/mm/hugetlbpage.c b/arch/sh/mm/hugetlbpage.c
index 220d7bc43d2b..999ab5916e69 100644
--- a/arch/sh/mm/hugetlbpage.c
+++ b/arch/sh/mm/hugetlbpage.c
@@ -21,7 +21,7 @@
#include <asm/tlbflush.h>
#include <asm/cacheflush.h>
-pte_t *huge_pte_alloc(struct mm_struct *mm,
+pte_t *huge_pte_alloc(struct mm_struct *mm, struct vm_area_struct *vma,
unsigned long addr, unsigned long sz)
{
pgd_t *pgd;
diff --git a/arch/sparc/configs/sparc64_defconfig b/arch/sparc/configs/sparc64_defconfig
index 12a4fb0bd52a..18099099583e 100644
--- a/arch/sparc/configs/sparc64_defconfig
+++ b/arch/sparc/configs/sparc64_defconfig
@@ -122,7 +122,6 @@ CONFIG_INPUT_SPARCSPKR=y
# CONFIG_SERIO_SERPORT is not set
CONFIG_SERIO_PCIPS2=m
CONFIG_SERIO_RAW=m
-# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_SUNSU=y
CONFIG_SERIAL_SUNSU_CONSOLE=y
CONFIG_SERIAL_SUNSAB=y
diff --git a/arch/sparc/include/asm/ftrace.h b/arch/sparc/include/asm/ftrace.h
index d3aa1a524431..e284394cb3aa 100644
--- a/arch/sparc/include/asm/ftrace.h
+++ b/arch/sparc/include/asm/ftrace.h
@@ -17,7 +17,7 @@ void _mcount(void);
#endif
#ifdef CONFIG_DYNAMIC_FTRACE
-/* reloction of mcount call site is the same as the address */
+/* relocation of mcount call site is the same as the address */
static inline unsigned long ftrace_call_adjust(unsigned long addr)
{
return addr;
diff --git a/arch/sparc/include/asm/io_64.h b/arch/sparc/include/asm/io_64.h
index 9fbfc9574432..5ffa820dcd4d 100644
--- a/arch/sparc/include/asm/io_64.h
+++ b/arch/sparc/include/asm/io_64.h
@@ -454,11 +454,6 @@ void sbus_set_sbus64(struct device *, int);
*/
#define xlate_dev_mem_ptr(p) __va(p)
-/*
- * Convert a virtual cached pointer to an uncached pointer
- */
-#define xlate_dev_kmem_ptr(p) p
-
#endif
#endif /* !(__SPARC64_IO_H) */
diff --git a/arch/sparc/mm/hugetlbpage.c b/arch/sparc/mm/hugetlbpage.c
index ad4b42f04988..04d8790f6c32 100644
--- a/arch/sparc/mm/hugetlbpage.c
+++ b/arch/sparc/mm/hugetlbpage.c
@@ -279,7 +279,7 @@ unsigned long pud_leaf_size(pud_t pud) { return 1UL << tte_to_shift(*(pte_t *)&p
unsigned long pmd_leaf_size(pmd_t pmd) { return 1UL << tte_to_shift(*(pte_t *)&pmd); }
unsigned long pte_leaf_size(pte_t pte) { return 1UL << tte_to_shift(pte); }
-pte_t *huge_pte_alloc(struct mm_struct *mm,
+pte_t *huge_pte_alloc(struct mm_struct *mm, struct vm_area_struct *vma,
unsigned long addr, unsigned long sz)
{
pgd_t *pgd;
diff --git a/arch/um/Kconfig.debug b/arch/um/Kconfig.debug
index 315d368e63ad..1dfb2959c73b 100644
--- a/arch/um/Kconfig.debug
+++ b/arch/um/Kconfig.debug
@@ -17,6 +17,7 @@ config GCOV
bool "Enable gcov support"
depends on DEBUG_INFO
depends on !KCOV
+ depends on !MODULES
help
This option allows developers to retrieve coverage data from a UML
session.
diff --git a/arch/um/drivers/cow.h b/arch/um/drivers/cow.h
index 103adac691ed..9a67c017000f 100644
--- a/arch/um/drivers/cow.h
+++ b/arch/um/drivers/cow.h
@@ -24,10 +24,3 @@ extern void cow_sizes(int version, __u64 size, int sectorsize, int align,
int *data_offset_out);
#endif
-
-/*
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
diff --git a/arch/um/drivers/hostaudio_kern.c b/arch/um/drivers/hostaudio_kern.c
index d35d3f305a31..5b064d360cb7 100644
--- a/arch/um/drivers/hostaudio_kern.c
+++ b/arch/um/drivers/hostaudio_kern.c
@@ -122,13 +122,11 @@ static ssize_t hostaudio_write(struct file *file, const char __user *buffer,
static __poll_t hostaudio_poll(struct file *file,
struct poll_table_struct *wait)
{
- __poll_t mask = 0;
-
#ifdef DEBUG
printk(KERN_DEBUG "hostaudio: poll called (unimplemented)\n");
#endif
- return mask;
+ return 0;
}
static long hostaudio_ioctl(struct file *file,
diff --git a/arch/um/drivers/vector_kern.c b/arch/um/drivers/vector_kern.c
index 47a02e60898d..d27a2a9faf3e 100644
--- a/arch/um/drivers/vector_kern.c
+++ b/arch/um/drivers/vector_kern.c
@@ -8,7 +8,6 @@
* Copyright (C) 2001 by various other people who didn't put their name here.
*/
-#include <linux/version.h>
#include <linux/memblock.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
diff --git a/arch/um/include/asm/pgtable.h b/arch/um/include/asm/pgtable.h
index def376194dce..b9e20bbe2f75 100644
--- a/arch/um/include/asm/pgtable.h
+++ b/arch/um/include/asm/pgtable.h
@@ -302,7 +302,7 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
struct mm_struct;
extern pte_t *virt_to_pte(struct mm_struct *mm, unsigned long addr);
-#define update_mmu_cache(vma,address,ptep) do ; while (0)
+#define update_mmu_cache(vma,address,ptep) do {} while (0)
/* Encode and de-code a swap entry */
#define __swp_type(x) (((x).val >> 5) & 0x1f)
diff --git a/arch/um/include/uapi/asm/Kbuild b/arch/um/include/uapi/asm/Kbuild
new file mode 100644
index 000000000000..f66554cd5c45
--- /dev/null
+++ b/arch/um/include/uapi/asm/Kbuild
@@ -0,0 +1 @@
+# SPDX-License-Identifier: GPL-2.0
diff --git a/arch/um/kernel/Makefile b/arch/um/kernel/Makefile
index 5aa882011e04..e698e0c7dbdc 100644
--- a/arch/um/kernel/Makefile
+++ b/arch/um/kernel/Makefile
@@ -21,7 +21,6 @@ obj-y = config.o exec.o exitcode.o irq.o ksyms.o mem.o \
obj-$(CONFIG_BLK_DEV_INITRD) += initrd.o
obj-$(CONFIG_GPROF) += gprof_syms.o
-obj-$(CONFIG_GCOV) += gmon_syms.o
obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
obj-$(CONFIG_STACKTRACE) += stacktrace.o
diff --git a/arch/um/kernel/dyn.lds.S b/arch/um/kernel/dyn.lds.S
index dacbfabf66d8..2f2a8ce92f1e 100644
--- a/arch/um/kernel/dyn.lds.S
+++ b/arch/um/kernel/dyn.lds.S
@@ -6,6 +6,12 @@ OUTPUT_ARCH(ELF_ARCH)
ENTRY(_start)
jiffies = jiffies_64;
+VERSION {
+ {
+ local: *;
+ };
+}
+
SECTIONS
{
PROVIDE (__executable_start = START);
diff --git a/arch/um/kernel/gmon_syms.c b/arch/um/kernel/gmon_syms.c
deleted file mode 100644
index 9361a8eb9bf1..000000000000
--- a/arch/um/kernel/gmon_syms.c
+++ /dev/null
@@ -1,16 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- */
-
-#include <linux/module.h>
-
-extern void __bb_init_func(void *) __attribute__((weak));
-EXPORT_SYMBOL(__bb_init_func);
-
-extern void __gcov_init(void *) __attribute__((weak));
-EXPORT_SYMBOL(__gcov_init);
-extern void __gcov_merge_add(void *, unsigned int) __attribute__((weak));
-EXPORT_SYMBOL(__gcov_merge_add);
-extern void __gcov_exit(void) __attribute__((weak));
-EXPORT_SYMBOL(__gcov_exit);
diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c
index 9019ff5905b1..8e636ce02949 100644
--- a/arch/um/kernel/mem.c
+++ b/arch/um/kernel/mem.c
@@ -72,8 +72,7 @@ static void __init one_page_table_init(pmd_t *pmd)
set_pmd(pmd, __pmd(_KERNPG_TABLE +
(unsigned long) __pa(pte)));
- if (pte != pte_offset_kernel(pmd, 0))
- BUG();
+ BUG_ON(pte != pte_offset_kernel(pmd, 0));
}
}
diff --git a/arch/um/kernel/uml.lds.S b/arch/um/kernel/uml.lds.S
index 45d957d7004c..7a8e2b123e29 100644
--- a/arch/um/kernel/uml.lds.S
+++ b/arch/um/kernel/uml.lds.S
@@ -7,6 +7,12 @@ OUTPUT_ARCH(ELF_ARCH)
ENTRY(_start)
jiffies = jiffies_64;
+VERSION {
+ {
+ local: *;
+ };
+}
+
SECTIONS
{
/* This must contain the right address - not quite the default ELF one.*/
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index dac15f646f79..0045e1b44190 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -60,7 +60,13 @@ config X86
select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
select ARCH_32BIT_OFF_T if X86_32
select ARCH_CLOCKSOURCE_INIT
+ select ARCH_ENABLE_HUGEPAGE_MIGRATION if X86_64 && HUGETLB_PAGE && MIGRATION
+ select ARCH_ENABLE_MEMORY_HOTPLUG if X86_64 || (X86_32 && HIGHMEM)
+ select ARCH_ENABLE_MEMORY_HOTREMOVE if MEMORY_HOTPLUG
+ select ARCH_ENABLE_SPLIT_PMD_PTLOCK if X86_64 || X86_PAE
+ select ARCH_ENABLE_THP_MIGRATION if X86_64 && TRANSPARENT_HUGEPAGE
select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI
+ select ARCH_HAS_CACHE_LINE_SIZE
select ARCH_HAS_DEBUG_VIRTUAL
select ARCH_HAS_DEBUG_VM_PGTABLE if !X86_PAE
select ARCH_HAS_DEVMEM_IS_ALLOWED
@@ -165,6 +171,7 @@ config X86
select HAVE_ARCH_TRANSPARENT_HUGEPAGE
select HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD if X86_64
select HAVE_ARCH_USERFAULTFD_WP if X86_64 && USERFAULTFD
+ select HAVE_ARCH_USERFAULTFD_MINOR if X86_64 && USERFAULTFD
select HAVE_ARCH_VMAP_STACK if X86_64
select HAVE_ARCH_RANDOMIZE_KSTACK_OFFSET
select HAVE_ARCH_WITHIN_STACK_FRAMES
@@ -315,9 +322,6 @@ config GENERIC_CALIBRATE_DELAY
config ARCH_HAS_CPU_RELAX
def_bool y
-config ARCH_HAS_CACHE_LINE_SIZE
- def_bool y
-
config ARCH_HAS_FILTER_PGPROT
def_bool y
@@ -2428,30 +2432,13 @@ config ARCH_HAS_ADD_PAGES
def_bool y
depends on X86_64 && ARCH_ENABLE_MEMORY_HOTPLUG
-config ARCH_ENABLE_MEMORY_HOTPLUG
- def_bool y
- depends on X86_64 || (X86_32 && HIGHMEM)
-
-config ARCH_ENABLE_MEMORY_HOTREMOVE
+config ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE
def_bool y
- depends on MEMORY_HOTPLUG
config USE_PERCPU_NUMA_NODE_ID
def_bool y
depends on NUMA
-config ARCH_ENABLE_SPLIT_PMD_PTLOCK
- def_bool y
- depends on X86_64 || X86_PAE
-
-config ARCH_ENABLE_HUGEPAGE_MIGRATION
- def_bool y
- depends on X86_64 && HUGETLB_PAGE && MIGRATION
-
-config ARCH_ENABLE_THP_MIGRATION
- def_bool y
- depends on X86_64 && TRANSPARENT_HUGEPAGE
-
menu "Power management and ACPI options"
config ARCH_HIBERNATION_HEADER
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 43cbfc84153a..5e1f38179f49 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -156,7 +156,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp, unsigned long arg,
#endif
/* Kernel thread ? */
- if (unlikely(p->flags & (PF_KTHREAD | PF_IO_WORKER))) {
+ if (unlikely(p->flags & PF_KTHREAD)) {
memset(childregs, 0, sizeof(struct pt_regs));
kthread_frame_init(frame, sp, arg);
return 0;
@@ -172,6 +172,23 @@ int copy_thread(unsigned long clone_flags, unsigned long sp, unsigned long arg,
task_user_gs(p) = get_user_gs(current_pt_regs());
#endif
+ if (unlikely(p->flags & PF_IO_WORKER)) {
+ /*
+ * An IO thread is a user space thread, but it doesn't
+ * return to ret_after_fork().
+ *
+ * In order to indicate that to tools like gdb,
+ * we reset the stack and instruction pointers.
+ *
+ * It does the same kernel frame setup to return to a kernel
+ * function that a kernel thread does.
+ */
+ childregs->sp = 0;
+ childregs->ip = 0;
+ kthread_frame_init(frame, sp, arg);
+ return 0;
+ }
+
/* Set a new TLS for the child thread? */
if (clone_flags & CLONE_SETTLS)
ret = set_new_tls(p, tls);
diff --git a/arch/x86/mm/pat/set_memory.c b/arch/x86/mm/pat/set_memory.c
index 427980617557..156cd235659f 100644
--- a/arch/x86/mm/pat/set_memory.c
+++ b/arch/x86/mm/pat/set_memory.c
@@ -16,6 +16,8 @@
#include <linux/pci.h>
#include <linux/vmalloc.h>
#include <linux/libnvdimm.h>
+#include <linux/vmstat.h>
+#include <linux/kernel.h>
#include <asm/e820/api.h>
#include <asm/processor.h>
@@ -91,6 +93,12 @@ static void split_page_count(int level)
return;
direct_pages_count[level]--;
+ if (system_state == SYSTEM_RUNNING) {
+ if (level == PG_LEVEL_2M)
+ count_vm_event(DIRECT_MAP_LEVEL2_SPLIT);
+ else if (level == PG_LEVEL_1G)
+ count_vm_event(DIRECT_MAP_LEVEL3_SPLIT);
+ }
direct_pages_count[level - 1] += PTRS_PER_PTE;
}
diff --git a/arch/x86/pci/amd_bus.c b/arch/x86/pci/amd_bus.c
index bfa50e65ef6c..ae744b6a0785 100644
--- a/arch/x86/pci/amd_bus.c
+++ b/arch/x86/pci/amd_bus.c
@@ -126,7 +126,7 @@ static int __init early_root_info_init(void)
node = (reg >> 4) & 0x07;
link = (reg >> 8) & 0x03;
- info = alloc_pci_root_info(min_bus, max_bus, node, link);
+ alloc_pci_root_info(min_bus, max_bus, node, link);
}
/*
diff --git a/arch/x86/um/Makefile b/arch/x86/um/Makefile
index 77f70b969d14..5ccb18290d71 100644
--- a/arch/x86/um/Makefile
+++ b/arch/x86/um/Makefile
@@ -21,6 +21,7 @@ obj-y += checksum_32.o syscalls_32.o
obj-$(CONFIG_ELF_CORE) += elfcore.o
subarch-y = ../lib/string_32.o ../lib/atomic64_32.o ../lib/atomic64_cx8_32.o
+subarch-y += ../lib/cmpxchg8b_emu.o ../lib/atomic64_386_32.o
subarch-y += ../kernel/sys_ia32.o
else
diff --git a/arch/x86/um/asm/elf.h b/arch/x86/um/asm/elf.h
index c907b20d4993..dcaf3b38a9e0 100644
--- a/arch/x86/um/asm/elf.h
+++ b/arch/x86/um/asm/elf.h
@@ -212,6 +212,6 @@ extern int elf_core_copy_fpregs(struct task_struct *t, elf_fpregset_t *fpu);
extern long elf_aux_hwcap;
#define ELF_HWCAP (elf_aux_hwcap)
-#define SET_PERSONALITY(ex) do ; while(0)
+#define SET_PERSONALITY(ex) do {} while(0)
#endif
diff --git a/arch/x86/um/shared/sysdep/stub_32.h b/arch/x86/um/shared/sysdep/stub_32.h
index c3891c1ada26..b95db9daf0e8 100644
--- a/arch/x86/um/shared/sysdep/stub_32.h
+++ b/arch/x86/um/shared/sysdep/stub_32.h
@@ -77,7 +77,7 @@ static inline void trap_myself(void)
__asm("int3");
}
-static void inline remap_stack_and_trap(void)
+static inline void remap_stack_and_trap(void)
{
__asm__ volatile (
"movl %%esp,%%ebx ;"
diff --git a/arch/x86/xen/pci-swiotlb-xen.c b/arch/x86/xen/pci-swiotlb-xen.c
index 19ae3e4fe4e9..54f9aa7e8457 100644
--- a/arch/x86/xen/pci-swiotlb-xen.c
+++ b/arch/x86/xen/pci-swiotlb-xen.c
@@ -59,7 +59,7 @@ int __init pci_xen_swiotlb_detect(void)
void __init pci_xen_swiotlb_init(void)
{
if (xen_swiotlb) {
- xen_swiotlb_init(1, true /* early */);
+ xen_swiotlb_init_early();
dma_ops = &xen_swiotlb_dma_ops;
#ifdef CONFIG_PCI
@@ -76,7 +76,7 @@ int pci_xen_swiotlb_init_late(void)
if (xen_swiotlb)
return 0;
- rc = xen_swiotlb_init(1, false /* late */);
+ rc = xen_swiotlb_init();
if (rc)
return rc;
diff --git a/arch/xtensa/configs/xip_kc705_defconfig b/arch/xtensa/configs/xip_kc705_defconfig
index 4f1ff9531f6a..062148e17135 100644
--- a/arch/xtensa/configs/xip_kc705_defconfig
+++ b/arch/xtensa/configs/xip_kc705_defconfig
@@ -72,7 +72,6 @@ CONFIG_MARVELL_PHY=y
# CONFIG_INPUT_KEYBOARD is not set
# CONFIG_INPUT_MOUSE is not set
# CONFIG_SERIO is not set
-CONFIG_DEVKMEM=y
CONFIG_SERIAL_8250=y
# CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
CONFIG_SERIAL_8250_CONSOLE=y