Messages in this thread Patch in this message | | | From | Fenghua Yu <> | Subject | [PATCH v4 15/17] kvm: x86: Report CORE_CAPABILITY on GET_SUPPORTED_CPUID | Date | Fri, 1 Mar 2019 18:45:09 -0800 |
| |
From: Xiaoyao Li <xiaoyao.li@linux.intel.com>
In the latest Intel SDM, CPUID.(EAX=7H,ECX=0):EDX[30] will enumerate the presence of the IA32_CORE_CAPABILITY MSR.
Update GET_SUPPORTED_CPUID to expose this feature bit to user space, so that user space know this bit can be enabled in CPUID.
Signed-off-by: Xiaoyao Li <xiaoyao.li@linux.intel.com> --- arch/x86/kvm/cpuid.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index c07958b59f50..e0e17b9c65da 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -410,7 +410,8 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function, /* cpuid 7.0.edx*/ const u32 kvm_cpuid_7_0_edx_x86_features = F(AVX512_4VNNIW) | F(AVX512_4FMAPS) | F(SPEC_CTRL) | - F(SPEC_CTRL_SSBD) | F(ARCH_CAPABILITIES) | F(INTEL_STIBP); + F(SPEC_CTRL_SSBD) | F(ARCH_CAPABILITIES) | F(CORE_CAPABILITY) | + F(INTEL_STIBP); /* all calls to cpuid_count() should be made on the same cpu */ get_cpu(); -- 2.7.4
| |