Messages in this thread Patch in this message | | | Date | Fri, 10 Dec 2021 13:02:17 -0800 | Subject | [PATCH v4 02/14] x86/cpufeatures: add AMD Fam19h Branch Sampling feature | From | Stephane Eranian <> |
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This patch adds a cpu feature for AMD Fam19h Branch Sampling feature as bit 31 of EBX on CPUID leaf function 0x80000008.
Signed-off-by: Stephane Eranian <eranian@google.com> --- arch/x86/include/asm/cpufeatures.h | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h index d5b5f2ab87a0..e71443f93f04 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h @@ -315,6 +315,7 @@ #define X86_FEATURE_AMD_SSBD (13*32+24) /* "" Speculative Store Bypass Disable */ #define X86_FEATURE_VIRT_SSBD (13*32+25) /* Virtualized Speculative Store Bypass Disable */ #define X86_FEATURE_AMD_SSB_NO (13*32+26) /* "" Speculative Store Bypass is fixed in hardware. */ +#define X86_FEATURE_AMD_BRS (13*32+31) /* Branch Sampling available */ /* Thermal and Power Management Leaf, CPUID level 0x00000006 (EAX), word 14 */ #define X86_FEATURE_DTHERM (14*32+ 0) /* Digital Thermal Sensor */ -- 2.34.1.173.g76aa8bc2d0-goog
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