diff options
Diffstat (limited to 'arch/arm64/kernel/alternative.c')
| -rw-r--r-- | arch/arm64/kernel/alternative.c | 27 |
1 files changed, 13 insertions, 14 deletions
diff --git a/arch/arm64/kernel/alternative.c b/arch/arm64/kernel/alternative.c index d32d4ed5519b..8ff6610af496 100644 --- a/arch/arm64/kernel/alternative.c +++ b/arch/arm64/kernel/alternative.c @@ -24,8 +24,8 @@ #define ALT_ORIG_PTR(a) __ALT_PTR(a, orig_offset) #define ALT_REPL_PTR(a) __ALT_PTR(a, alt_offset) -#define ALT_CAP(a) ((a)->cpufeature & ~ARM64_CB_BIT) -#define ALT_HAS_CB(a) ((a)->cpufeature & ARM64_CB_BIT) +#define ALT_CAP(a) ((a)->cpucap & ~ARM64_CB_BIT) +#define ALT_HAS_CB(a) ((a)->cpucap & ARM64_CB_BIT) /* Volatile, as we may be patching the guts of READ_ONCE() */ static volatile int all_alternatives_applied; @@ -37,12 +37,12 @@ struct alt_region { struct alt_instr *end; }; -bool alternative_is_applied(u16 cpufeature) +bool alternative_is_applied(u16 cpucap) { - if (WARN_ON(cpufeature >= ARM64_NCAPS)) + if (WARN_ON(cpucap >= ARM64_NCAPS)) return false; - return test_bit(cpufeature, applied_alternatives); + return test_bit(cpucap, applied_alternatives); } /* @@ -121,11 +121,11 @@ static noinstr void patch_alternative(struct alt_instr *alt, * accidentally call into the cache.S code, which is patched by us at * runtime. */ -static void clean_dcache_range_nopatch(u64 start, u64 end) +static noinstr void clean_dcache_range_nopatch(u64 start, u64 end) { u64 cur, d_size, ctr_el0; - ctr_el0 = read_sanitised_ftr_reg(SYS_CTR_EL0); + ctr_el0 = arm64_ftr_reg_ctrel0.sys_val; d_size = 4 << cpuid_feature_extract_unsigned_field(ctr_el0, CTR_EL0_DminLine_SHIFT); cur = start & ~(d_size - 1); @@ -141,7 +141,7 @@ static void clean_dcache_range_nopatch(u64 start, u64 end) static void __apply_alternatives(const struct alt_region *region, bool is_module, - unsigned long *feature_mask) + unsigned long *cpucap_mask) { struct alt_instr *alt; __le32 *origptr, *updptr; @@ -151,7 +151,7 @@ static void __apply_alternatives(const struct alt_region *region, int nr_inst; int cap = ALT_CAP(alt); - if (!test_bit(cap, feature_mask)) + if (!test_bit(cap, cpucap_mask)) continue; if (!cpus_have_cap(cap)) @@ -188,11 +188,10 @@ static void __apply_alternatives(const struct alt_region *region, icache_inval_all_pou(); isb(); - /* Ignore ARM64_CB bit from feature mask */ bitmap_or(applied_alternatives, applied_alternatives, - feature_mask, ARM64_NCAPS); + cpucap_mask, ARM64_NCAPS); bitmap_and(applied_alternatives, applied_alternatives, - cpu_hwcaps, ARM64_NCAPS); + system_cpucaps, ARM64_NCAPS); } } @@ -239,7 +238,7 @@ static int __init __apply_alternatives_multi_stop(void *unused) } else { DECLARE_BITMAP(remaining_capabilities, ARM64_NCAPS); - bitmap_complement(remaining_capabilities, boot_capabilities, + bitmap_complement(remaining_capabilities, boot_cpucaps, ARM64_NCAPS); BUG_ON(all_alternatives_applied); @@ -274,7 +273,7 @@ void __init apply_boot_alternatives(void) pr_info("applying boot alternatives\n"); __apply_alternatives(&kernel_alternatives, false, - &boot_capabilities[0]); + &boot_cpucaps[0]); } #ifdef CONFIG_MODULES |