On 24/02/2017 11:32, sci sci wrote: > I tried several combinations of the following settings but with little > success. > > 1) Set/Unset Virtual NMIs which is bit 5 in pin based vm execution control > 2) Set/Unset bit 3 in guest interruptibility state (Blocking by NMI) > 3) Set/Unset "NMI-blocking" which is bit 3 in pin based NMI exiting > 4) Set/Unset "NMI-window exiting" which is bit 22 in primary processor > based VM execution control. Doing all four of these should do it: - set bit 3 in pin-based controls to cause a VMEXIT for host NMIs and enable special processing of IRET (paragraph 25.3) - set bit 5 in pin-based controls so that guest interruptibility state tracks virtual-NMI blocking - set bit 22 of VM executino control to enable the NMI-window vmexit - set bit 3 in guest interruptibility state to delay the NMI-window exit until the next IRET Paolo
