On Thu, 2012-10-04 at 14:41 +0200, Avi Kivity wrote: > > Again the numbers are ridiculously high for arch_local_irq_restore. > Maybe there's a bad perf/kvm interaction when we're injecting an > interrupt, I can't believe we're spending 84% of the time running the > popf instruction.
Smells like a software fallback that doesn't do NMI, hrtimer based sampling typically hits popf where we re-enable interrupts. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
