> > + if (pt_mode == PT_MODE_HOST_GUEST) { > > This would be vmx_pt_supported(), but I think it's better to remove that function and just test pt_mode == > PT_MODE_HOST_GUEST everywhere (or !=). Hi Paolo, There have so many vmx_pt_supported() invoked in MSRs read/write (patch 9) patch and I think it can be replaced by pt_mode check. But I think this function need to be reserved in patch 5(cpuid emulation). What is your opinion? Thanks, Luwei Kang > > Paolo > > > + vmx->pt_desc.guest.ctl = 0; > > + vmcs_write64(GUEST_IA32_RTIT_CTL, 0); > > + pt_set_intercept_for_msr(vmx, 1); > > + } > > +