On 2019-10-09 23:15:07 [+0200], Paolo Bonzini wrote: > > --- a/arch/x86/kvm/cpuid.c > > +++ b/arch/x86/kvm/cpuid.c > > @@ -479,6 +479,7 @@ static inline int __do_cpuid_func(struct kvm_cpuid_entry2 *entry, u32 function, > > > > /* cpuid 0x80000008.ebx */ > > const u32 kvm_cpuid_8000_0008_ebx_x86_features = > > + F(XSAVEERPTR) | > > F(WBNOINVD) | F(AMD_IBPB) | F(AMD_IBRS) | F(AMD_SSBD) | F(VIRT_SSBD) | > > F(AMD_SSB_NO) | F(AMD_STIBP) | F(AMD_STIBP_ALWAYS_ON); > > > > > > Yet another example of a patch that shouldn't be stable material (in > this case it's fine, but there can certainly be cases where just adding > a single flag depends on core kernel changes). Also, taking advantage of this feature requires changes which just landed in qemu's master branch. > Paolo Sebastian
