[Bug 65561] KVM:Entry failed on Single stepping sti instruction

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https://bugzilla.kernel.org/show_bug.cgi?id=65561

Paolo Bonzini <bonzini@xxxxxxx> changed:

           What    |Removed                     |Added
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                 CC|                            |bonzini@xxxxxxx

--- Comment #3 from Paolo Bonzini <bonzini@xxxxxxx> ---
> 2. Also is there anything special about `out` instruction that causes 
> interrupts to come at instruction immediately next to it, when not running in 
> single stepping mode.

The "out" instruction exits to QEMU and has a much higher latency than an
bare-metal.  This, plus the usage of mutexes in QEMU, may make it more likely
that interrupts occur right after an "out" instruction.

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