On Tue, Jul 07, 2020 at 10:16:22AM +0800, Cathy Zhang wrote: > SERIALIZE instruction is supported by intel processors, > like Sapphire Rapids. Expose it in KVM supported cpuid.
Providing at least a rough overview of the instruction, e.g. its enumeration, usage, fault rules, controls, etc... would be nice. In isolation, the changelog isn't remotely helpful in understanding the correctness of the patch. > Signed-off-by: Cathy Zhang <[email protected]> > --- > arch/x86/kvm/cpuid.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c > index 8a294f9..e603aeb 100644 > --- a/arch/x86/kvm/cpuid.c > +++ b/arch/x86/kvm/cpuid.c > @@ -341,7 +341,8 @@ void kvm_set_cpu_caps(void) > kvm_cpu_cap_mask(CPUID_7_EDX, > F(AVX512_4VNNIW) | F(AVX512_4FMAPS) | F(SPEC_CTRL) | > F(SPEC_CTRL_SSBD) | F(ARCH_CAPABILITIES) | F(INTEL_STIBP) | > - F(MD_CLEAR) | F(AVX512_VP2INTERSECT) | F(FSRM) > + F(MD_CLEAR) | F(AVX512_VP2INTERSECT) | F(FSRM) | > + F(SERIALIZE) > ); > > /* TSC_ADJUST and ARCH_CAPABILITIES are emulated in software. */ > -- > 1.8.3.1 >
