Il 22/03/2013 09:54, Gleb Natapov ha scritto: >>>> > >> >>> > > If userspace does not care about irq status it does not use IRQ_STATUS >>> > > ioctl and we should not go extra mile to provide one. Not everyone cares >>> > > about running Windows as a guest. >> > I see your point. But if no windows guest running, RTC is hardly used by other guests and the overheard can be ignore. >> > > Anyone can use RTC is Linux guest. Don't know about others. I do not think the additional code complexity is worth the speedup. The KVM Userspace That Won't Be Merged doesn't even emulate the RTC interrupt at all. Paolo -- 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