On 04/03/2018 13:07, Luwei Kang wrote: > + 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 !=). Paolo > + vmx->pt_desc.guest.ctl = 0; > + vmcs_write64(GUEST_IA32_RTIT_CTL, 0); > + pt_set_intercept_for_msr(vmx, 1); > + } > +