Re: [PATCH 0/2] Enumerate and expose AVX_VNNI feature
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
Re: [PATCH 0/2] Enumerate and expose AVX_VNNI feature
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
[PATCH 0/2] Enumerate and expose AVX_VNNI feature
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(-) -- 2.29.2.334.gfaefdd61ec
[PATCH 0/2] Enumerate and expose AVX_VNNI feature
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(-) -- 2.29.2.334.gfaefdd61ec
