From: Konrad Rzeszutek Wilk Date: Sat, 28 Apr 2018 20:34:17 +0000 (+0200) Subject: x86/cpufeatures: Add X86_FEATURE_RDS X-Git-Tag: v4.19~1000^2~42 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0cc5fa00b0a88dad140b4e5c2cead9951ad36822;p=platform%2Fkernel%2Flinux-rpi.git x86/cpufeatures: Add X86_FEATURE_RDS Add the CPU feature bit CPUID.7.0.EDX[31] which indicates whether the CPU supports Reduced Data Speculation. [ tglx: Split it out from a later patch ] Signed-off-by: Konrad Rzeszutek Wilk Signed-off-by: Thomas Gleixner Reviewed-by: Ingo Molnar --- diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h index 3493b58..48305a1 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h @@ -334,6 +334,7 @@ #define X86_FEATURE_SPEC_CTRL (18*32+26) /* "" Speculation Control (IBRS + IBPB) */ #define X86_FEATURE_INTEL_STIBP (18*32+27) /* "" Single Thread Indirect Branch Predictors */ #define X86_FEATURE_ARCH_CAPABILITIES (18*32+29) /* IA32_ARCH_CAPABILITIES MSR (Intel) */ +#define X86_FEATURE_RDS (18*32+31) /* Reduced Data Speculation */ /* * BUG word(s)