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[0/2] Enumerate and expose AVX_VNNI feature

Message ID 20201216020129.19875-1-yang.zhong@intel.com (mailing list archive)
Headers show
Series Enumerate and expose AVX_VNNI feature | expand

Message

Yang Zhong Dec. 16, 2020, 2:01 a.m. UTC 
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(-)