> From: Avi Kivity [mailto:avi@xxxxxxxxxx] > Sent: Tuesday, May 24, 2011 7:27 PM > > On 05/24/2011 02:20 PM, Tian, Kevin wrote: > > > I don't think it's possible. Both calls are done with interrupts disabled. > > > > If that's the case then there's another potential issue. Deadlock may happen > > when calling smp_call_function_single with interrupt disabled. > > We don't do that. vcpu migration calls vcpu_clear() with interrupts > enabled, which then calls smp_call_function_single(), which calls > __vcpu_clear() with interrupts disabled. vmclear_local_vcpus() is > called from interrupts disabled (and calls __vcpu_clear() directly). > OK, that's clear to me now. Thanks Kevin -- 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
