Is there any preferred way to busy-wait on a virtio event? As in: the guest doesn't have anything useful to do until something is plopped down on the virtio queue, but would like to proceed as quickly as possible after that. Passing through an interrupt handler seems like unnecessary overhead. Right now I have a poll loop looking like (pseudocode): outw(0, trigger); while (readl(ring->output pointer) != final output pointer) cpu_relax(); /* x86 PAUSE instruction */ ... but I have no idea how much sense that makes. -hpa -- 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
