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Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull x86 cpuid changes from Ingo Molnar:
 "The biggest change is x86 CPU bug handling refactoring and cleanups,
  by Borislav Petkov"

* 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, CPU, AMD: Drop useless label
  x86, AMD: Correct {rd,wr}msr_amd_safe warnings
  x86: Fold-in trivial check_config function
  x86, cpu: Convert AMD Erratum 400
  x86, cpu: Convert AMD Erratum 383
  x86, cpu: Convert Cyrix coma bug detection
  x86, cpu: Convert FDIV bug detection
  x86, cpu: Convert F00F bug detection
  x86, cpu: Expand cpufeature facility to include cpu bugs
This commit is contained in:
Linus Torvalds
2013-04-30 08:34:38 -07:00
parent 874f6d1be7 1077c932db
commit df8edfa9af
13 changed files with 80 additions and 75 deletions
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19
arch/x86/include/asm/cpufeature.h
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@@ -9,6 +9,7 @@
#endif
#define NCAPINTS 10 /* N 32-bit words worth of info */
#define NBUGINTS 1 /* N 32-bit bug flags */
/*
* Note: If the comment begins with a quoted string, that string is used
@@ -218,6 +219,17 @@
#define X86_FEATURE_ADX (9*32+19) /* The ADCX and ADOX instructions */
#define X86_FEATURE_SMAP (9*32+20) /* Supervisor Mode Access Prevention */
/*
* BUG word(s)
*/
#define X86_BUG(x) (NCAPINTS*32 + (x))
#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 */
#define X86_BUG_AMD_APIC_C1E X86_BUG(4) /* AMD Erratum 400 */
#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
#include <asm/asm.h>
@@ -404,6 +416,13 @@ static __always_inline __pure bool __static_cpu_has(u16 bit)
#define static_cpu_has(bit) boot_cpu_has(bit)
#endif
#define cpu_has_bug(c, bit) cpu_has(c, (bit))
#define set_cpu_bug(c, bit) set_cpu_cap(c, (bit))
#define clear_cpu_bug(c, bit) clear_cpu_cap(c, (bit));
#define static_cpu_has_bug(bit) static_cpu_has((bit))
#define boot_cpu_has_bug(bit) cpu_has_bug(&boot_cpu_data, (bit))
#endif /* defined(__KERNEL__) && !defined(__ASSEMBLY__) */
#endif /* _ASM_X86_CPUFEATURE_H */