[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 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? Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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