On 02/03/2011 05:55 PM, Jan Kiszka wrote:
> > What's an interrupt window without IRET interception? I don't the details, but I thought you could get something like an interrupt-window-open interception by (fake-)injecting an IRQ and intercepting on VIRQ acceptance. That will not work if returning to and staying in irq-disabled guest code, therefore the timeout, but it should be most efficient (specifically if the guest uses NMIs for things like perf).
Since NMIs are used to break out of irq-disabled regions (watchdog, NMI IPIs during reboots) I'm wary of such a solution.
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