2018-01-30 11:32-0600, Janakarajan Natarajan: > Expose the AMD Core Perf Extension flag to the guests. > > Signed-off-by: Janakarajan Natarajan <Janakarajan.Natarajan@xxxxxxx> > --- > diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c > @@ -365,7 +371,7 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function, > F(LAHF_LM) | F(CMP_LEGACY) | 0 /*SVM*/ | 0 /* ExtApicSpace */ | > F(CR8_LEGACY) | F(ABM) | F(SSE4A) | F(MISALIGNSSE) | > F(3DNOWPREFETCH) | F(OSVW) | 0 /* IBS */ | F(XOP) | > - 0 /* SKINIT, WDT, LWP */ | F(FMA4) | F(TBM); > + 0 /* SKINIT, WDT, LWP */ | F(FMA4) | F(TBM) | f_perfext; You can just say F(PERFCTR_CORE) here. The conditional features are needed when there is a runtime config option for them. We are automatically masking features that the host doesn't support, thanks. > > /* cpuid 0xC0000001.edx */ > const u32 kvm_cpuid_C000_0001_edx_x86_features = > -- > 2.7.4 >
