[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] Re: xen dependant on pcpu 0 ?
On Tue, 2010-10-12 at 17:44 +0100, Konrad Rzeszutek Wilk wrote: > On Tue, Oct 12, 2010 at 06:28:13PM +0200, Sander Eikelenboom wrote: > > Hi Keir, > > > > Does xen and/or the xen console depend on physical cpu 0 ? > > Usually the console for Dom0, and I think all other domains go > through CPU0. Let me CC Ian here, who has been mucking in this > area and found some bugs (and produced fixes). > > Ian, that bug you found with not clearing the eventchannel - that > wouldn't have an impact here, right? I don't think so. That issue was related to evtchn delivery which is to VCPUs not PCPUs. I don't think it was specific to VCPU0 either -- it just happened that the particular evtchn was generally tied to VCPU0 by default. I don't think the problem would happen for PIRQs anyway since the ->startup method for that IRQ chip includes an explicit rebind of the evtchn to a VCPU, it's only dynirqs which have the issue. Ian. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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