On Sun, 2013-05-19 at 16:34 +0300, Michael S. Tsirkin wrote: > Right but we need to keep it working on upstream as well. > If I do preempt_enable under a spinlock upstream won't it > try to sleep under spinlock? No it wont. A spinlock calls preempt_disable implicitly, and a preempt_enable() will not schedule unless preempt_count is zero, which it wont be under a spinlock. If it did, there would be lots of bugs all over the place because this is done throughout the kernel (a preempt_enable() under a spinlock). In other words, don't ever use preempt_enable_no_resched(). -- Steve -- 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
