Messages in this thread Patch in this message | | | From | Babu Moger <> | Subject | [PATCH] KVM:x86: AMD Processor Topology Information | Date | Mon, 29 Jan 2018 11:39:44 -0500 |
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From: Stanislav Lanci <pixo@polepetko.eu>
This patch allow to enable x86 feature TOPOEXT. This is needed to provide information about SMT on AMD Zen CPUs to the guest.
Signed-off-by: Stanislav Lanci <pixo@polepetko.eu> Tested-by: Nick Sarnie <commendsarnex@gmail.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Babu Moger <babu.moger@amd.com> ---
Rebased on top of linux-next. Maximum extended functions are already set to 0x8000001f after the commit 8765d75329a3 KVM: X86: Extend CPUID range to include new leaf
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 ac0041c2f5af..20e491b94f44 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -371,7 +371,8 @@ 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(TOPOEXT); /* cpuid 0xC0000001.edx */ const u32 kvm_cpuid_C000_0001_edx_x86_features = -- 2.16.0
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