Re: [PATCH 0/2] Enumerate and expose AVX_VNNI feature

Paolo Bonzini
2021-01-21T15:07:06Z

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