From: Yang Zhong <yang.zhong@intel.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: linux-kernel@vger.kernel.org, x86@kernel.org,
kvm@vger.kernel.org, tglx@linutronix.de, mingo@redhat.com,
bp@alien8.de, hpa@zytor.com, tony.luck@intel.com,
seanjc@google.com, vkuznets@redhat.com, wanpengli@tencent.com,
jmattson@google.com, joro@8bytes.org, kyung.min.park@intel.com,
yang.zhong@intel.com
Subject: Re: [PATCH 0/2] Enumerate and expose AVX_VNNI feature
Date: Fri, 22 Jan 2021 14:43:27 +0800 [thread overview]
Message-ID: <20210122064327.GA25155@yangzhon-Virtual> (raw)
In-Reply-To: <eee07399-df81-83ed-d410-18b42d51e26c@redhat.com>
On Thu, Jan 21, 2021 at 04:02:17PM +0100, Paolo Bonzini wrote:
> On 05/01/21 01:49, Yang Zhong wrote:
> >A processor supports AVX_VNNI instructions if CPUID.(EAX=7,ECX=1):EAX[bit 4]
> >is present.
> >
> >This series includes kernel and kvm patches, kernel patch define this
> >new cpu feature bit and kvm expose this bit to guest. When this bit is
> >enabled on cpu or vcpu, the cpu feature flag is shown as "avx_vnni" in
> >/proc/cpuinfo of host and guest.
> >
> >Detailed information on the instruction and CPUID feature flag can be
> >found in the latest "extensions" manual [1].
> >
> >Reference:
> >[1]. https://software.intel.com/content/www/us/en/develop/download/intel-architecture-instruction-set-extensions-programming-reference.html
> >
> >
> >Kyung Min Park (1):
> > Enumerate AVX Vector Neural Network instructions
> >
> >Yang Zhong (1):
> > KVM: Expose AVX_VNNI instruction to guset
> >
> > arch/x86/include/asm/cpufeatures.h | 1 +
> > arch/x86/kvm/cpuid.c | 2 +-
> > 2 files changed, 2 insertions(+), 1 deletion(-)
> >
>
> Queued, thanks.
>
> Paolo
Paolo, thanks, i will send the related Qemu patch soon.
Yang
next prev parent reply other threads:[~2021-01-22 6:55 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-05 0:49 [PATCH 0/2] Enumerate and expose AVX_VNNI feature Yang Zhong
2021-01-05 0:49 ` [PATCH 1/2] Enumerate AVX Vector Neural Network instructions Yang Zhong
2021-01-05 11:47 ` Paolo Bonzini
2021-01-05 12:14 ` Borislav Petkov
2021-01-12 2:13 ` Yang Zhong
2021-01-13 12:54 ` Paolo Bonzini
2021-01-05 0:49 ` [PATCH 2/2] KVM: Expose AVX_VNNI instruction to guset Yang Zhong
2021-01-21 15:02 ` [PATCH 0/2] Enumerate and expose AVX_VNNI feature Paolo Bonzini
2021-01-22 6:43 ` Yang Zhong [this message]
-- strict thread matches above, loose matches on Subject: below --
2020-12-16 2:01 Yang Zhong
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