On Fri, Dec 03, 2010 at 04:39:22PM -0600, Anthony Liguori wrote: > + if (yield_on_hlt) > + min |= CPU_BASED_HLT_EXITING; This approach won't work out on AMD because in HLT the CPU may enter C1e. In C1e the local apic timer interupt is not delivered anymore and when this is the current timer in use the cpu may miss timer ticks or never comes out of HLT again. The guest has no chance to work around this as the Linux idle routine does. If you really wan't active idling of a guest, it should idle in the hypervisor where it can work around such problems. Joerg -- 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
