Re: [PATCH v4 05/17] x86/cpufeatures: Enumerate IA32_CORE_CAPABILITIES MSR

On 3/4/19 10:55 AM, Yu, Fenghua wrote: >> What does this feature end up looking like in /proc/cpuinfo? > The flag string is "core_capability" in /proc/cpuinfo. Ahh, OK, I misread the lack of quotes in the comment: > +#define X86_FEATURE_CORE_CAPABILITY (18*32+30) /* IA32_CORE_CAPABILITY MSR > *

RE: [PATCH v4 05/17] x86/cpufeatures: Enumerate IA32_CORE_CAPABILITIES MSR

> From: Hansen, Dave > On 3/1/19 6:44 PM, Fenghua Yu wrote: > > diff --git a/arch/x86/include/asm/cpufeatures.h > b/arch/x86/include/asm/cpufeatures.h > > index 6d6122524711..350eeccd0ce9 100644 > > --- a/arch/x86/include/asm/cpufeatures.h > > +++ b/arch/x86/include/asm/cpufeatures.h > > @@ -349,6

Re: [PATCH v4 05/17] x86/cpufeatures: Enumerate IA32_CORE_CAPABILITIES MSR

On 3/1/19 6:44 PM, Fenghua Yu wrote: > diff --git a/arch/x86/include/asm/cpufeatures.h > b/arch/x86/include/asm/cpufeatures.h > index 6d6122524711..350eeccd0ce9 100644 > --- a/arch/x86/include/asm/cpufeatures.h > +++ b/arch/x86/include/asm/cpufeatures.h > @@ -349,6 +349,7 @@ > #define X86_FEATURE

[PATCH v4 05/17] x86/cpufeatures: Enumerate IA32_CORE_CAPABILITIES MSR

MSR register IA32_CORE_CAPABILITIES (0xCF) contains bits that enumerate some model specific features. The MSR 0xCF itself is enumerated by CPUID.(EAX=0x7,ECX=0):EDX[30]. When this bit is 1, the MSR 0xCF exists. Detailed information for the CPUID bit and the MSR can be found in the latest Intel Ar