linux-kernel - Re: [PATCH v5 3/3] cpuid: add AVX512_4VNNIW and AVX512

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Message-ID: <20161110111915.xiogs44mwbkhiwmu@pd.tnic>
Date:   Thu, 10 Nov 2016 12:19:15 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     He Chen <he.chen@...ux.intel.com>
Cc:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org, x86@...nel.org,
        Paolo Bonzini <pbonzini@...hat.com>,
        Radim Krčmář <rkrcmar@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H . Peter Anvin" <hpa@...or.com>,
        Luwei Kang <luwei.kang@...el.com>,
        Piotr Luc <Piotr.Luc@...el.com>
Subject: Re: [PATCH v5 3/3] cpuid: add AVX512_4VNNIW and AVX512_4FMAPS
 instructions support

On Wed, Nov 09, 2016 at 07:05:28PM +0800, He Chen wrote:
> Add two new AVX512 instructions support for KVM guest.

I think you mean "two new AVX512 subfeatures support". An instruction
support would be actual emulation of the instructions or so...

> 
> AVX512_4VNNIW:
> Vector instructions for deep learning enhanced word variable precision.
> 
> AVX512_4FMAPS:
> Vector instructions for deep learning floating-point single precision.
> 
> Signed-off-by: Luwei Kang <luwei.kang@...el.com>
> Signed-off-by: He Chen <he.chen@...ux.intel.com>
> ---
>  arch/x86/kvm/cpuid.c | 14 +++++++++++++-
>  1 file changed, 13 insertions(+), 1 deletion(-)

Rest looks ok:

Reviewed-by: Borislav Petkov <bp@...e.de>

-- 
Regards/Gruss,
    Boris.

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