[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] Fix softlockup issue after vcpu hotplug
On 30/1/07 12:57 pm, "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx> wrote: >> So saying this new watchdog model, simply walking timer wheel is >> not enough. Maybe we can force max timeout value to 1s in safe_halt >> to special this case? I'll make a try on this. But this will make current >> tick-less model to a bit tick-ful back. :-) > > I'm sure this will fix the issue. But who knows what real underlying issue > it might be hiding? There could be a bug in next_timer_event(), for example. Maybe events a long way out (multiple seconds) don't always get considered but we are normally saved by the fact that CPUs have a few sooner events also queued up. But that may not be the case for a newly-onlined CPU. This is just an example hypothesis to explain why we need to properly track this down. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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