The patch focuses on a new instruction AVX512_BF16 support for kvm guest, defined as CPUID.(EAX=7,ECX=1):EAX[bit 5], see spec[1].
The kvm implementation depends on kernel patch[2] which is in lkml discussion. References: [1] https://software.intel.com/sites/default/files/managed/c5/15/\ architecture-instruction-set-extensions-programming-reference.pdf [2] https://lkml.org/lkml/2019/6/19/912 Jing Liu (1): kvm: x86: Expose AVX512_BF16 feature to guest arch/x86/kvm/cpuid.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) -- 1.8.3.1
