Hyper-V Synthetic Timers and AutoEOI - #855
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Work-in-progress. Currently Windows 11 uses them, doesn't use direct mode yet, but since Hyper-V EOI assist is not implemented results in significantly more EOIs than when using SVM AVIC.
…r and fix fMsgPending even when SINT is masked. Also SIMP enabled and SINT masking doesn't apply in direct-mode.
…led VP assist page/MSR.
Timer message delivery is busted on SMP VMs because timers always fire on last EMT. Also, we should consider MMIO2 mapping of the SIM page after checking large-page issue bugref:7532.
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…P for STIMER messages is done).
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There is a race between Working on fixing that with the current lockfree approach. It requires extending the PIB to hold one more bit per vector for the AutoEOI status but this is more work than initially anticipated and also touches the regular APIC interrupt path more. |
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Base work for Hyper-V synthetic timers (VP assist page) and AutoEOI.
SMP VMs are still a todo (will R3 release assert).