diff options
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/include/asm/cpufeature.h | 12 | ||||
| -rw-r--r-- | arch/x86/include/asm/disabled-features.h | 6 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/common.c | 4 |
3 files changed, 13 insertions, 9 deletions
diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index 3636ec06c887..aeab47932933 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -63,9 +63,9 @@ extern const char * const x86_bug_flags[NBUGINTS*32]; (((bit)>>5)==11 && (1UL<<((bit)&31) & REQUIRED_MASK11)) || \ (((bit)>>5)==12 && (1UL<<((bit)&31) & REQUIRED_MASK12)) || \ (((bit)>>5)==13 && (1UL<<((bit)&31) & REQUIRED_MASK13)) || \ - (((bit)>>5)==13 && (1UL<<((bit)&31) & REQUIRED_MASK14)) || \ - (((bit)>>5)==13 && (1UL<<((bit)&31) & REQUIRED_MASK15)) || \ - (((bit)>>5)==14 && (1UL<<((bit)&31) & REQUIRED_MASK16)) ) + (((bit)>>5)==14 && (1UL<<((bit)&31) & REQUIRED_MASK14)) || \ + (((bit)>>5)==15 && (1UL<<((bit)&31) & REQUIRED_MASK15)) || \ + (((bit)>>5)==16 && (1UL<<((bit)&31) & REQUIRED_MASK16)) ) #define DISABLED_MASK_BIT_SET(bit) \ ( (((bit)>>5)==0 && (1UL<<((bit)&31) & DISABLED_MASK0 )) || \ @@ -82,9 +82,9 @@ extern const char * const x86_bug_flags[NBUGINTS*32]; (((bit)>>5)==11 && (1UL<<((bit)&31) & DISABLED_MASK11)) || \ (((bit)>>5)==12 && (1UL<<((bit)&31) & DISABLED_MASK12)) || \ (((bit)>>5)==13 && (1UL<<((bit)&31) & DISABLED_MASK13)) || \ - (((bit)>>5)==13 && (1UL<<((bit)&31) & DISABLED_MASK14)) || \ - (((bit)>>5)==13 && (1UL<<((bit)&31) & DISABLED_MASK15)) || \ - (((bit)>>5)==14 && (1UL<<((bit)&31) & DISABLED_MASK16)) ) + (((bit)>>5)==14 && (1UL<<((bit)&31) & DISABLED_MASK14)) || \ + (((bit)>>5)==15 && (1UL<<((bit)&31) & DISABLED_MASK15)) || \ + (((bit)>>5)==16 && (1UL<<((bit)&31) & DISABLED_MASK16)) ) #define cpu_has(c, bit) \ (__builtin_constant_p(bit) && REQUIRED_MASK_BIT_SET(bit) ? 1 : \ diff --git a/arch/x86/include/asm/disabled-features.h b/arch/x86/include/asm/disabled-features.h index 39343be7d4f4..911e9358ceb1 100644 --- a/arch/x86/include/asm/disabled-features.h +++ b/arch/x86/include/asm/disabled-features.h @@ -29,11 +29,11 @@ #endif /* CONFIG_X86_64 */ #ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS -# define DISABLE_PKU (1<<(X86_FEATURE_PKU)) -# define DISABLE_OSPKE (1<<(X86_FEATURE_OSPKE)) -#else # define DISABLE_PKU 0 # define DISABLE_OSPKE 0 +#else +# define DISABLE_PKU (1<<(X86_FEATURE_PKU & 31)) +# define DISABLE_OSPKE (1<<(X86_FEATURE_OSPKE & 31)) #endif /* CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS */ /* diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 8394b3d1f94f..f45a4b9d28c8 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -310,6 +310,10 @@ static bool pku_disabled; static __always_inline void setup_pku(struct cpuinfo_x86 *c) { + /* check the boot processor, plus compile options for PKU: */ + if (!cpu_feature_enabled(X86_FEATURE_PKU)) + return; + /* checks the actual processor's cpuid bits: */ if (!cpu_has(c, X86_FEATURE_PKU)) return; if (pku_disabled) |
