linux-kernel - Re: [PATCH rebase] KVM: x86: Expose AVX512 VP2INTERSECT in cpuid for TGL

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Message-ID: <65e997c3-9ef9-d9f3-143e-0bc0823aad4f@redhat.com>
Date:   Wed, 18 Mar 2020 12:26:37 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Zhenyu Wang <zhenyuw@...ux.intel.com>
Cc:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Zhong, Yang" <yang.zhong@...el.com>
Subject: Re: [PATCH rebase] KVM: x86: Expose AVX512 VP2INTERSECT in cpuid for
 TGL

On 18/03/20 04:27, Zhenyu Wang wrote:
> On Tigerlake new AVX512 VP2INTERSECT feature is available.
> This trys to expose it for KVM supported cpuid.
> 
> Cc: "Zhong, Yang" <yang.zhong@...el.com>
> Signed-off-by: Zhenyu Wang <zhenyuw@...ux.intel.com>
> ---
>  arch/x86/kvm/cpuid.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
> index 08280d8a2ac9..435a7da07d5f 100644
> --- a/arch/x86/kvm/cpuid.c
> +++ b/arch/x86/kvm/cpuid.c
> @@ -338,7 +338,7 @@ void kvm_set_cpu_caps(void)
>  	kvm_cpu_cap_mask(CPUID_7_EDX,
>  		F(AVX512_4VNNIW) | F(AVX512_4FMAPS) | F(SPEC_CTRL) |
>  		F(SPEC_CTRL_SSBD) | F(ARCH_CAPABILITIES) | F(INTEL_STIBP) |
> -		F(MD_CLEAR)
> +		F(MD_CLEAR) | F(AVX512_VP2INTERSECT)
>  	);
>  
>  	/* TSC_ADJUST and ARCH_CAPABILITIES are emulated in software. */
> 

Queued, thanks.

Paolo