Messages in this thread | | | Date | Tue, 10 Nov 2020 14:41:33 -0000 | Subject | Re: [PATCH v4 06/17] PCI: add SIOV and IMS capability detection | From | "David Woodhouse" <> |
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> Hi David > > I did't follow the support for 32768 CPUs in guest without IR support. > > Can you tell me how that is done?
Using bits 11-5 of the MSI address bits (the other 7 bits of "Extended Destination ID" that aren't the Remappable Format indicator).
And physical addressing mode, which is no loss for external interrupts since they're all unicast dest_Fixed these days anyway.
-- dwmw2
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