From: Paolo Bonzini <pbonzini@redhat.com>
To: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] KVM: x86: Expose fast short REP MOV for supported cpuid
Date: Mon, 23 Mar 2020 13:58:56 +0100 [thread overview]
Message-ID: <5bf4035d-4c37-be3f-cfe2-759ccc0bc17d@redhat.com> (raw)
In-Reply-To: <20200323092236.3703-1-zhenyuw@linux.intel.com>
On 23/03/20 10:22, Zhenyu Wang wrote:
> For CPU supporting fast short REP MOV (XF86_FEATURE_FSRM) e.g Icelake,
> Tigerlake, expose it in KVM supported cpuid as well.
>
> Signed-off-by: Zhenyu Wang <zhenyuw@linux.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 435a7da07d5f..cf6da12bd17a 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(AVX512_VP2INTERSECT)
> + F(MD_CLEAR) | F(AVX512_VP2INTERSECT) | F(FSRM)
> );
>
> /* TSC_ADJUST and ARCH_CAPABILITIES are emulated in software. */
>
Queued, thanks.
Paolo
prev parent reply other threads:[~2020-03-23 12:59 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-23 9:22 [PATCH] KVM: x86: Expose fast short REP MOV for supported cpuid Zhenyu Wang
2020-03-23 12:58 ` Paolo Bonzini [this message]
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