2012/11/27 Gleb Natapov <gleb@xxxxxxxxxx>: > For KVM_PV_REASON_PAGE_NOT_PRESENT it behaves like an exception. Ok. There seem to be a bug in kvm_async_pf_task_wait(). Using idle_cpu(cpu) to find out if the current task is the idle task may not work if there is pending wake up. Me may schedule another task but when that other task sleeps later we can't schedule back to idle until the fault is completed. The right way is to use is_idle_task(current) -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
