[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] x86/hvm: implement save/restore for posted interrupts
>>> On 28.07.14 at 10:17, <yang.z.zhang@xxxxxxxxx> wrote: > Jan Beulich wrote on 2014-07-28: >>>>> On 25.07.14 at 23:31, <kevin.tian@xxxxxxxxx> wrote: >>> Well, my read of this patch is that it hides some problem other >>> place by forcing posted injection at restore. As Yang has pointed >>> out, it is not necessary once the notification has been synced to >>> IRR it's done (will be noted before vmentry). So at restore path, >>> it's just about how pending IRR is handled. Now the problem is that >>> Yang can't reproduce the problem locally (let's see any change with >>> Olaf's further information), so we need Olaf's help to figure out >>> the real culprit with >> our input. >> >> Searching the SDM I can't find any reference to IRR uses during >> interrupt recognition. The only reference I can find is that during >> delivery the IRR bit gets cleared and the new RVI determined by >> scanning IRR. Hence I wonder whether setting RVI post-restore instead of > sync-ing IRR to PIR is what is needed? > > vmx_intr_assist() will do it. Olaf, any chance you could check that this is actually happening? Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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