Messages in this thread Patch in this message | | | Date | Thu, 3 Feb 2022 11:43:08 -0800 | Subject | [PATCH 2/2] x86/cpufeatures: Add macros for Intel's new fast rep string features | From | Jim Mattson <> |
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Even if no one else cares, these features should be exposed to kvm guests, and the code for the KVM_GET_SUPPORTED_CPUID ioctl is more readable if the bits have corresponding X86_FEATURE macros.
Signed-off-by: Jim Mattson <jmattson@google.com> --- arch/x86/include/asm/cpufeatures.h | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h index d7b51ddc8db3..138a50bc7bbd 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h @@ -299,6 +299,9 @@ /* Intel-defined CPU features, CPUID level 0x00000007:1 (EAX), word 12 */ #define X86_FEATURE_AVX_VNNI (12*32+ 4) /* AVX VNNI instructions */ #define X86_FEATURE_AVX512_BF16 (12*32+ 5) /* AVX512 BFLOAT16 instructions */ +#define X86_FEATURE_FZRM (12*32+10) /* Fast zero-length REP MOVSB */ +#define X86_FEATURE_FSRS (12*32+11) /* Fast short REP STOSB */ +#define X86_FEATURE_FSRC (12*32+12) /* Fast short REP {CMPSB,SCASB} */ /* AMD-defined CPU features, CPUID level 0x80000008 (EBX), word 13 */ #define X86_FEATURE_CLZERO (13*32+ 0) /* CLZERO instruction */ -- 2.35.0.263.gb82422642f-goog
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