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| author | Will Deacon <will@kernel.org> | 2022-07-25 12:59:15 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2022-07-25 12:59:15 +0300 |
| commit | f96d67a8af7a39f7ffaac464d8bccc4c720e52c2 (patch) | |
| tree | daee5c1458a5d8ed1bdb58b54de19b232ebd44aa /arch/arm64/mm/proc.S | |
| parent | 92867739e3439ecc9bfa0a106be515d93f14c735 (diff) | |
| parent | 1191b6256e50a07e7d8ce36eb970708e42a4be1a (diff) | |
| download | linux-f96d67a8af7a39f7ffaac464d8bccc4c720e52c2.tar.xz | |
Merge branch 'for-next/boot' into for-next/core
* for-next/boot: (34 commits)
arm64: fix KASAN_INLINE
arm64: Add an override for ID_AA64SMFR0_EL1.FA64
arm64: Add the arm64.nosve command line option
arm64: Add the arm64.nosme command line option
arm64: Expose a __check_override primitive for oddball features
arm64: Allow the idreg override to deal with variable field width
arm64: Factor out checking of a feature against the override into a macro
arm64: Allow sticky E2H when entering EL1
arm64: Save state of HCR_EL2.E2H before switch to EL1
arm64: Rename the VHE switch to "finalise_el2"
arm64: mm: fix booting with 52-bit address space
arm64: head: remove __PHYS_OFFSET
arm64: lds: use PROVIDE instead of conditional definitions
arm64: setup: drop early FDT pointer helpers
arm64: head: avoid relocating the kernel twice for KASLR
arm64: kaslr: defer initialization to initcall where permitted
arm64: head: record CPU boot mode after enabling the MMU
arm64: head: populate kernel page tables with MMU and caches on
arm64: head: factor out TTBR1 assignment into a macro
arm64: idreg-override: use early FDT mapping in ID map
...
Diffstat (limited to 'arch/arm64/mm/proc.S')
| -rw-r--r-- | arch/arm64/mm/proc.S | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/arch/arm64/mm/proc.S b/arch/arm64/mm/proc.S index 972ce8d7f2c5..7837a69524c5 100644 --- a/arch/arm64/mm/proc.S +++ b/arch/arm64/mm/proc.S @@ -249,8 +249,10 @@ SYM_FUNC_END(idmap_cpu_replace_ttbr1) * * Called exactly once from stop_machine context by each CPU found during boot. */ -__idmap_kpti_flag: - .long 1 + .pushsection ".data", "aw", %progbits +SYM_DATA(__idmap_kpti_flag, .long 1) + .popsection + SYM_FUNC_START(idmap_kpti_install_ng_mappings) cpu .req w0 temp_pte .req x0 @@ -273,7 +275,7 @@ SYM_FUNC_START(idmap_kpti_install_ng_mappings) mov x5, x3 // preserve temp_pte arg mrs swapper_ttb, ttbr1_el1 - adr flag_ptr, __idmap_kpti_flag + adr_l flag_ptr, __idmap_kpti_flag cbnz cpu, __idmap_kpti_secondary @@ -396,6 +398,8 @@ SYM_FUNC_END(idmap_kpti_install_ng_mappings) * * Initialise the processor for turning the MMU on. * + * Input: + * x0 - actual number of VA bits (ignored unless VA_BITS > 48) * Output: * Return in x0 the value of the SCTLR_EL1 register. */ @@ -465,12 +469,11 @@ SYM_FUNC_START(__cpu_setup) tcr_clear_errata_bits tcr, x9, x5 #ifdef CONFIG_ARM64_VA_BITS_52 - ldr_l x9, vabits_actual - sub x9, xzr, x9 + sub x9, xzr, x0 add x9, x9, #64 tcr_set_t1sz tcr, x9 #else - ldr_l x9, idmap_t0sz + idmap_get_t0sz x9 #endif tcr_set_t0sz tcr, x9 |