https://bugzilla.kernel.org/show_bug.cgi?id=65561 --- Comment #28 from Paolo Bonzini <bonzini@xxxxxxx> --- As Jatin said, most of the time the emulator is not invoked for instructions that require intervention of the hypervisor. Instead, the processor provides enough "pre-decoded" information about the instruction, so KVM doesn't need to do it all again in the emulator. Instructions that invoke the emulator are those that invoke ports or memory-mapped devices. However "out" is a fast path, so it doesn't invoke the emulator. You see it all the time because the kernel uses it to interact with many devices (such as the keyboard controller, disk controller or network cards). I suggest that you try reproducing the problem with "sti". The one with "out" is known and documented in the source code. -- You are receiving this mail because: You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
