On 11/27/2012 08:07 AM, Gleb Natapov wrote: > Those rcu_irq_enter()/rcu_irq_exit() were introduced by commit > c5e015d4949aa665 "KVM guest: exit idleness when handling > KVM_PV_REASON_PAGE_NOT_PRESENT", but now I am starting to question this > commit. KVM_PV_REASON_PAGE_NOT_PRESENT should not kick cpu out of > idleness. kvm_async_pf_task_wait() checks that cpu is idle and calls > halt if it is. After that commit schedule() may be called between > rcu_irq_enter()/rcu_irq_exit() which is probably illegal. Paul? otoh, calling schedule() apparently kicks cpu out of idleness now. Thanks, Sasha -- 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
