On Thu, Aug 3, 2017 at 6:23 PM Wanpeng Li <kernellwp@xxxxxxxxx> wrote: > Thanks Radim. :) In addition, I will think more about it and figure > out a finial solution. Have you had any thoughts on a final solution? We're seeing incorrect behavior with an L1 hypervisor running under qemu with "-machine q35,kernel-irqchip=split", and I believe this may be the cause. In particular, VMCS12 has ACK_INTERRUPT_ON_EXIT set, but L1 is seeing an L2 exit for "external interrupt" with the VMCS12 VM-exit interruption information cleared to 0.
