Messages in this thread | | | Subject | Re: [PATCH v4 3/3] x86/kvm: Expose AMD Core Perf Extension flag to guests | From | "Natarajan, Janakarajan" <> | Date | Mon, 5 Feb 2018 11:48:00 -0600 |
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On 2/5/2018 7:43 AM, Radim Krcmar wrote: > 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@amd.com> >> --- >> 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,
Okay. I'll send a v5 with the changes.
Thanks.
> > thanks. > >> >> /* cpuid 0xC0000001.edx */ >> const u32 kvm_cpuid_C000_0001_edx_x86_features = >> -- >> 2.7.4 >>
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