On Mon, Apr 16, 2012 at 08:51:16PM +0300, Gleb Natapov wrote: > > > Only when eoi is pending. This is rare. > > > > This is exactly while guest handles an interrupt. > > It's not all that rare at all: e.g. device > > drivers cause an exit from interrupt > > handler by doing io. > So eoi will be coalesced with io that device driver does. Exactly what > we want. It won't. While we handle interrupts eoi is still set. So there will be a couple of tests + read from userspace Wasted not a huge overhead but it's the principle of the thing. -- MST -- 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
