INT instruction bug in WindowsXP This bug is in -no-kvm mode. In windowsXP at IDT entry 2&8 is Task gate when application use INT 2 or INT 8 it will cause blue screen in XP. I found it should cause #GP not generate hw interrupt. also I check this bug with -enable-kvm and works correctly. Which QEMU version did you use here? Can you still reproduce this problem with the latest version of QEMU (currently 2.8)? [Expired for QEMU because there has been no activity for 60 days.]