[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [xen-4.1-testing test] 9805: regressions - FAIL
On Thu, 17 Nov 2011, Stefan Bader wrote: > On 17.11.2011 11:13, Keir Fraser wrote: > > On 17/11/2011 09:57, "Stefan Bader" <stefan.bader@xxxxxxxxxxxxx> wrote: > > > >>>> This is due to a bad backport of c/s 24007:0526644ad2a6: In -unstable, > >>>> evtchn_unmask() must be called with d->event_lock held, while in 4.1 > >>>> the function acquires the lock (and now gets called with the lock already > >>>> held from do_physdev_op()'s case PHYSDEVOP_eoi). The change dates > >>>> back to 23573:584c2e5e03d9, which hardly is a candidate for backporting > >>>> (but maybe the locking change needs to be pulled out of there). > >>> > >>> Interestingly, Ubuntu's 4.1 fix has exactly the same problem. > >>> > >> > >> Hm, yes we should. I am pretty sure I hit that code path often enough, > >> Wonder > >> why I never saw any dead lock there... > > > > Perhaps your dom0 kernel doesn't register a pirq_eoi_map. > > > Would be the only explanation. And quite possible. Heck, I would need to know > what that is used for anyway. :/ The kernel is 3.0 based the interrupt I was > looking at just was a normal apic emulated through events one... Same here, I don't have any dom0 kernels that support it. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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