> > I was just confused by your wording; > > it sounded like you were saying that KVM supported bit 8. > > > > How about: > > > > /* > > * We do support PT if kvm_x86_ops->pt_supported(), but we do not > > * support IA32_XSS[bit 8]. Guests will have to use WRMSR rather than > > * XSAVES/XRSTORS to save/restore PT MSRs. > > */ > > Good! Looks good to me. Thanks, Luwei Kang > > Paolo