Hello! One more concern about the whole thing. I already replied to the previous series, but looks like my reply was missed. Your implementation does not care about live migration at all. And there's one fundamental issue with it. In the redistributor LPIs can be only pending, but in the CPU interface they still can be active. And they have priorities, therefore they can be preempted, so we can have even more than one active LPI at once. How to migrate this state? Here i am trying to prototype this by leaving active interrupts in LRs and allowing the userland to read/write them. This looks a bit stupid, additionally this will create problems if we are e. g. migrating from host with 8 LRs to host with 4 LRs, while having 6 active LPIs. Can anybody suggest better solution? Technically LPI pending table has unused bits from 0 to 8191, and we have 8192 LPIs, so we could push active state there, just for migration. Would this be a big violation of specification? It says nothing about these bits at all.
Kind regards, Pavel Fedin Expert Engineer Samsung Electronics Research center Russia -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
