RE: [Xen-devel] [RFC] Genapic in x86_64 Dom0

["Puthiyaparambil, Aravindh" <aravindh.puthiyaparambil@xxxxxxxxxx>]

> 
> Isn't flat/clustered mostly a local APIC issue? In which case domain 0
> needn't care, as local APICs are entirely maintained by Xen.

Yes you are right. The way Chris has written xen_send_IPI_shortcut()
should take care of the clustered case too.

> 
> As for IO APICs, although domain 0 writes the routing entries, Xen is
> responsible for stamping in appropriate destination fields, based on
> knowledge of physical CPU IDs and which domains are running on which
> physical CPUs. This code can be extended to handle writing
> clustering-compatible routing entries.

This sounds like a better idea and less work ;-) I will submit a patch.

Aravindh

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