On 04/17/2012 01:31 PM, Gleb Natapov wrote: > On Tue, Apr 17, 2012 at 01:29:04PM +0300, Avi Kivity wrote: > > On 04/17/2012 01:26 PM, Gleb Natapov wrote: > > > > It isn't, since you need to send an IPI. > > > > > > > That is exactly what I forget whether you can send IPI from there :) > > > Anyway this is another reason. > > > > > > > Actually I was wrong. You can't smp_call_function_single() from irq > > context (deadlocks if two vcpus do that), but we send a reschedule > > interrupt. So it should work. > > > Ah, good point. So if we'll use irqsave versions of spinlocks we can > drop kthread? Do we want 254 IPIs to be issued from irq context? Could be slow. We can make the unicast case run from irq context and defer the multicast to a thread. -- error compiling committee.c: too many arguments to function -- 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
