diff options
| author | Borislav Petkov <bp@suse.de> | 2013-03-20 15:07:27 +0100 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2013-04-02 19:12:54 +0200 |
| commit | e6ee94d58dfd06ec64c55f91581f00d4f98bf1f6 (patch) | |
| tree | 81bfb5b71e3d579675c5490be0f77f405995a9d4 /arch | |
| parent | x86, cpu: Convert Cyrix coma bug detection (diff) | |
| download | linux-e6ee94d58dfd06ec64c55f91581f00d4f98bf1f6.tar.xz linux-e6ee94d58dfd06ec64c55f91581f00d4f98bf1f6.zip | |
x86, cpu: Convert AMD Erratum 383
Convert the AMD erratum 383 testing code to the bug infrastructure. This
allows keeping the AMD-specific erratum testing machinery private to
amd.c and not export symbols to modules needlessly.
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/1363788448-31325-6-git-send-email-bp@alien8.de
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/cpufeature.h | 1 | ||||
| -rw-r--r-- | arch/x86/include/asm/processor.h | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/amd.c | 8 | ||||
| -rw-r--r-- | arch/x86/kvm/svm.c | 2 |
4 files changed, 8 insertions, 4 deletions
diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index a2b65c11081e..4cfb5c9f6029 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -225,6 +225,7 @@ #define X86_BUG_F00F X86_BUG(0) /* Intel F00F */ #define X86_BUG_FDIV X86_BUG(1) /* FPU FDIV */ #define X86_BUG_COMA X86_BUG(2) /* Cyrix 6x86 coma */ +#define X86_BUG_AMD_TLB_MMATCH X86_BUG(3) /* AMD Erratum 383 */ #if defined(__KERNEL__) && !defined(__ASSEMBLY__) diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 4e2fa2859e39..e044ef35f91f 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -974,7 +974,6 @@ unsigned long calc_aperfmperf_ratio(struct aperfmperf *old, * AMD errata checking */ #ifdef CONFIG_CPU_SUP_AMD -extern const int amd_erratum_383[]; extern const int amd_erratum_400[]; extern bool cpu_has_amd_erratum(const int *); diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index fa96eb0d02fb..85f84e13d2dd 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -513,6 +513,8 @@ static void __cpuinit early_init_amd(struct cpuinfo_x86 *c) #endif } +static const int amd_erratum_383[]; + static void __cpuinit init_amd(struct cpuinfo_x86 *c) { u32 dummy; @@ -727,6 +729,9 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c) rdmsrl_safe(MSR_AMD64_BU_CFG2, &value); value &= ~(1ULL << 24); wrmsrl_safe(MSR_AMD64_BU_CFG2, value); + + if (cpu_has_amd_erratum(amd_erratum_383)) + set_cpu_bug(c, X86_BUG_AMD_TLB_MMATCH); } rdmsr_safe(MSR_AMD64_PATCH_LEVEL, &c->microcode, &dummy); @@ -863,9 +868,8 @@ const int amd_erratum_400[] = AMD_MODEL_RANGE(0x10, 0x2, 0x1, 0xff, 0xf)); EXPORT_SYMBOL_GPL(amd_erratum_400); -const int amd_erratum_383[] = +static const int amd_erratum_383[] = AMD_OSVW_ERRATUM(3, AMD_MODEL_RANGE(0x10, 0, 0, 0xff, 0xf)); -EXPORT_SYMBOL_GPL(amd_erratum_383); bool cpu_has_amd_erratum(const int *erratum) { diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index e1b1ce21bc00..7d39d70647e3 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -555,7 +555,7 @@ static void svm_init_erratum_383(void) int err; u64 val; - if (!cpu_has_amd_erratum(amd_erratum_383)) + if (!static_cpu_has_bug(X86_BUG_AMD_TLB_MMATCH)) return; /* Use _safe variants to not break nested virtualization */ |