Hi Sean, 2018-03-09 0:57 GMT+08:00 Sean Christopherson <sean.j.christopherson@xxxxxxxxx>: > Use kvm_fast_pio_in() on VMX and consolidate x86's fast PIO code > now that both VMX and SVM support fast PIO for IN and OUT. I found the kvm-unit-tests/emulator.flat fails after this patchset. FAIL: movq mmx generates #MF FAIL: 64-bit mov imm2 FAIL: 16-bit smsw reg FAIL: 32-bit smsw reg FAIL: 64-bit smsw reg FAIL: nop FAIL: mov_dr6 Regards, Wanpeng Li