diff options
Diffstat (limited to 'arch/arm64/mm')
| -rw-r--r-- | arch/arm64/mm/context.c | 6 | ||||
| -rw-r--r-- | arch/arm64/mm/dma-mapping.c | 2 | ||||
| -rw-r--r-- | arch/arm64/mm/fault.c | 3 | ||||
| -rw-r--r-- | arch/arm64/mm/init.c | 2 | ||||
| -rw-r--r-- | arch/arm64/mm/mmu.c | 23 | ||||
| -rw-r--r-- | arch/arm64/mm/pageattr.c | 8 | ||||
| -rw-r--r-- | arch/arm64/mm/proc.S | 51 |
7 files changed, 30 insertions, 65 deletions
diff --git a/arch/arm64/mm/context.c b/arch/arm64/mm/context.c index b8b4cf0bcf39..e1e0dca01839 100644 --- a/arch/arm64/mm/context.c +++ b/arch/arm64/mm/context.c @@ -43,17 +43,17 @@ static u32 get_cpu_asid_bits(void) { u32 asid; int fld = cpuid_feature_extract_unsigned_field(read_cpuid(ID_AA64MMFR0_EL1), - ID_AA64MMFR0_ASID_SHIFT); + ID_AA64MMFR0_EL1_ASIDBITS_SHIFT); switch (fld) { default: pr_warn("CPU%d: Unknown ASID size (%d); assuming 8-bit\n", smp_processor_id(), fld); fallthrough; - case ID_AA64MMFR0_ASID_8: + case ID_AA64MMFR0_EL1_ASIDBITS_8: asid = 8; break; - case ID_AA64MMFR0_ASID_16: + case ID_AA64MMFR0_EL1_ASIDBITS_16: asid = 16; } diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c index 7d7e9a046305..3cb101e8cb29 100644 --- a/arch/arm64/mm/dma-mapping.c +++ b/arch/arm64/mm/dma-mapping.c @@ -36,7 +36,7 @@ void arch_dma_prep_coherent(struct page *page, size_t size) { unsigned long start = (unsigned long)page_address(page); - dcache_clean_inval_poc(start, start + size); + dcache_clean_poc(start, start + size); } #ifdef CONFIG_IOMMU_DMA diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c index c33f1fad2745..5b391490e045 100644 --- a/arch/arm64/mm/fault.c +++ b/arch/arm64/mm/fault.c @@ -691,6 +691,9 @@ static int __kprobes do_translation_fault(unsigned long far, static int do_alignment_fault(unsigned long far, unsigned long esr, struct pt_regs *regs) { + if (IS_ENABLED(CONFIG_COMPAT_ALIGNMENT_FIXUPS) && + compat_user_mode(regs)) + return do_compat_alignment_fixup(far, regs); do_bad_area(far, esr, regs); return 0; } diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index b9af30be813e..4b4651ee47f2 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -360,7 +360,7 @@ void __init arm64_memblock_init(void) extern u16 memstart_offset_seed; u64 mmfr0 = read_cpuid(ID_AA64MMFR0_EL1); int parange = cpuid_feature_extract_unsigned_field( - mmfr0, ID_AA64MMFR0_PARANGE_SHIFT); + mmfr0, ID_AA64MMFR0_EL1_PARANGE_SHIFT); s64 range = linear_region_size - BIT(id_aa64mmfr0_parange_to_phys_shift(parange)); diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c index eb489302c28a..9a7c38965154 100644 --- a/arch/arm64/mm/mmu.c +++ b/arch/arm64/mm/mmu.c @@ -539,7 +539,7 @@ static void __init map_mem(pgd_t *pgdp) */ BUILD_BUG_ON(pgd_index(direct_map_end - 1) == pgd_index(direct_map_end)); - if (can_set_direct_map() || IS_ENABLED(CONFIG_KFENCE)) + if (can_set_direct_map()) flags |= NO_BLOCK_MAPPINGS | NO_CONT_MAPPINGS; /* @@ -690,7 +690,7 @@ static bool arm64_early_this_cpu_has_bti(void) pfr1 = __read_sysreg_by_encoding(SYS_ID_AA64PFR1_EL1); return cpuid_feature_extract_unsigned_field(pfr1, - ID_AA64PFR1_BT_SHIFT); + ID_AA64PFR1_EL1_BT_SHIFT); } /* @@ -1184,14 +1184,6 @@ static void free_empty_tables(unsigned long addr, unsigned long end, } #endif -#if !ARM64_KERNEL_USES_PMD_MAPS -int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node, - struct vmem_altmap *altmap) -{ - WARN_ON((start < VMEMMAP_START) || (end > VMEMMAP_END)); - return vmemmap_populate_basepages(start, end, node, altmap); -} -#else /* !ARM64_KERNEL_USES_PMD_MAPS */ int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node, struct vmem_altmap *altmap) { @@ -1203,6 +1195,10 @@ int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node, pmd_t *pmdp; WARN_ON((start < VMEMMAP_START) || (end > VMEMMAP_END)); + + if (!ARM64_KERNEL_USES_PMD_MAPS) + return vmemmap_populate_basepages(start, end, node, altmap); + do { next = pmd_addr_end(addr, end); @@ -1236,7 +1232,6 @@ int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node, return 0; } -#endif /* !ARM64_KERNEL_USES_PMD_MAPS */ #ifdef CONFIG_MEMORY_HOTPLUG void vmemmap_free(unsigned long start, unsigned long end, @@ -1551,11 +1546,7 @@ int arch_add_memory(int nid, u64 start, u64 size, VM_BUG_ON(!mhp_range_allowed(start, size, true)); - /* - * KFENCE requires linear map to be mapped at page granularity, so that - * it is possible to protect/unprotect single pages in the KFENCE pool. - */ - if (can_set_direct_map() || IS_ENABLED(CONFIG_KFENCE)) + if (can_set_direct_map()) flags |= NO_BLOCK_MAPPINGS | NO_CONT_MAPPINGS; __create_pgd_mapping(swapper_pg_dir, start, __phys_to_virt(start), diff --git a/arch/arm64/mm/pageattr.c b/arch/arm64/mm/pageattr.c index 64e985eaa52d..d107c3d434e2 100644 --- a/arch/arm64/mm/pageattr.c +++ b/arch/arm64/mm/pageattr.c @@ -21,7 +21,13 @@ bool rodata_full __ro_after_init = IS_ENABLED(CONFIG_RODATA_FULL_DEFAULT_ENABLED bool can_set_direct_map(void) { - return rodata_full || debug_pagealloc_enabled(); + /* + * rodata_full, DEBUG_PAGEALLOC and KFENCE require linear map to be + * mapped at page granularity, so that it is possible to + * protect/unprotect single pages. + */ + return rodata_full || debug_pagealloc_enabled() || + IS_ENABLED(CONFIG_KFENCE); } static int change_page_range(pte_t *ptep, unsigned long addr, void *data) diff --git a/arch/arm64/mm/proc.S b/arch/arm64/mm/proc.S index 7837a69524c5..b9ecbbae1e1a 100644 --- a/arch/arm64/mm/proc.S +++ b/arch/arm64/mm/proc.S @@ -10,6 +10,7 @@ #include <linux/init.h> #include <linux/linkage.h> #include <linux/pgtable.h> +#include <linux/cfi_types.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> #include <asm/asm_pointer_auth.h> @@ -48,17 +49,19 @@ #ifdef CONFIG_KASAN_HW_TAGS #define TCR_MTE_FLAGS TCR_TCMA1 | TCR_TBI1 | TCR_TBID1 -#else +#elif defined(CONFIG_ARM64_MTE) /* * The mte_zero_clear_page_tags() implementation uses DC GZVA, which relies on * TBI being enabled at EL1. */ #define TCR_MTE_FLAGS TCR_TBI1 | TCR_TBID1 +#else +#define TCR_MTE_FLAGS 0 #endif /* * Default MAIR_EL1. MT_NORMAL_TAGGED is initially mapped as Normal memory and - * changed during __cpu_setup to Normal Tagged if the system supports MTE. + * changed during mte_cpu_setup to Normal Tagged if the system supports MTE. */ #define MAIR_EL1_SET \ (MAIR_ATTRIDX(MAIR_ATTR_DEVICE_nGnRnE, MT_DEVICE_nGnRnE) | \ @@ -185,7 +188,7 @@ SYM_FUNC_END(cpu_do_resume) * This is the low-level counterpart to cpu_replace_ttbr1, and should not be * called by anything else. It can only be executed from a TTBR0 mapping. */ -SYM_FUNC_START(idmap_cpu_replace_ttbr1) +SYM_TYPED_FUNC_START(idmap_cpu_replace_ttbr1) save_and_disable_daif flags=x2 __idmap_cpu_set_reserved_ttbr1 x1, x3 @@ -253,7 +256,7 @@ SYM_FUNC_END(idmap_cpu_replace_ttbr1) SYM_DATA(__idmap_kpti_flag, .long 1) .popsection -SYM_FUNC_START(idmap_kpti_install_ng_mappings) +SYM_TYPED_FUNC_START(idmap_kpti_install_ng_mappings) cpu .req w0 temp_pte .req x0 num_cpus .req w1 @@ -426,46 +429,8 @@ SYM_FUNC_START(__cpu_setup) mov_q mair, MAIR_EL1_SET mov_q tcr, TCR_TxSZ(VA_BITS) | TCR_CACHE_FLAGS | TCR_SMP_FLAGS | \ TCR_TG_FLAGS | TCR_KASLR_FLAGS | TCR_ASID16 | \ - TCR_TBI0 | TCR_A1 | TCR_KASAN_SW_FLAGS - -#ifdef CONFIG_ARM64_MTE - /* - * Update MAIR_EL1, GCR_EL1 and TFSR*_EL1 if MTE is supported - * (ID_AA64PFR1_EL1[11:8] > 1). - */ - mrs x10, ID_AA64PFR1_EL1 - ubfx x10, x10, #ID_AA64PFR1_MTE_SHIFT, #4 - cmp x10, #ID_AA64PFR1_MTE - b.lt 1f - - /* Normal Tagged memory type at the corresponding MAIR index */ - mov x10, #MAIR_ATTR_NORMAL_TAGGED - bfi mair, x10, #(8 * MT_NORMAL_TAGGED), #8 + TCR_TBI0 | TCR_A1 | TCR_KASAN_SW_FLAGS | TCR_MTE_FLAGS - mov x10, #KERNEL_GCR_EL1 - msr_s SYS_GCR_EL1, x10 - - /* - * If GCR_EL1.RRND=1 is implemented the same way as RRND=0, then - * RGSR_EL1.SEED must be non-zero for IRG to produce - * pseudorandom numbers. As RGSR_EL1 is UNKNOWN out of reset, we - * must initialize it. - */ - mrs x10, CNTVCT_EL0 - ands x10, x10, #SYS_RGSR_EL1_SEED_MASK - csinc x10, x10, xzr, ne - lsl x10, x10, #SYS_RGSR_EL1_SEED_SHIFT - msr_s SYS_RGSR_EL1, x10 - - /* clear any pending tag check faults in TFSR*_EL1 */ - msr_s SYS_TFSR_EL1, xzr - msr_s SYS_TFSRE0_EL1, xzr - - /* set the TCR_EL1 bits */ - mov_q x10, TCR_MTE_FLAGS - orr tcr, tcr, x10 -1: -#endif tcr_clear_errata_bits tcr, x9, x5 #ifdef CONFIG_ARM64_VA_BITS_52 |