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
