Re: [PATCH v3 1/3] Introduce a workqueue to deliver PIT timer interrupts.
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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? -- Gleb. -- 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