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SubjectRe: [PATCH v2 1/4] x86: kvm: Update the reverse_cpuid list to include CPUID_7_EDX
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On 29/01/2018 01:58, KarimAllah Ahmed wrote:
> Cc: Paolo Bonzini <pbonzini@redhat.com>
> Cc: Radim Krčmář <rkrcmar@redhat.com>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Ingo Molnar <mingo@redhat.com>
> Cc: H. Peter Anvin <hpa@zytor.com>
> Cc: x86@kernel.org
> Cc: kvm@vger.kernel.org
> Cc: linux-kernel@vger.kernel.org
> Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de>
> ---
> arch/x86/kvm/cpuid.h | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/x86/kvm/cpuid.h b/arch/x86/kvm/cpuid.h
> index cdc70a3..dcfe227 100644
> --- a/arch/x86/kvm/cpuid.h
> +++ b/arch/x86/kvm/cpuid.h
> @@ -54,6 +54,7 @@ static const struct cpuid_reg reverse_cpuid[] = {
> [CPUID_8000_000A_EDX] = {0x8000000a, 0, CPUID_EDX},
> [CPUID_7_ECX] = { 7, 0, CPUID_ECX},
> [CPUID_8000_0007_EBX] = {0x80000007, 0, CPUID_EBX},
> + [CPUID_7_EDX] = { 7, 0, CPUID_EDX},
> };
>
> static __always_inline struct cpuid_reg x86_feature_cpuid(unsigned x86_feature)
>

You can also stop using KF(...) and KVM_CPUID_BIT_* for bits that come
from this leaf. F(AVX512_4VNNIW) | F(AVX512_4FMAPS) | F(IBRS) will be
enough.

Paolo

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