RE: [PATCH][2.4] generic cluster APIC support for systems with m ore than 8 CPUs

From: Martin J. Bligh (mbligh@aracnet.com)
Date: Sat Dec 21 2002 - 23:05:18 EST


> Yes, our feeling it is possible to handle all non-NUMAQ systems pretty
> generically in terms of APIC setup and interrupt routing. We can use
> either logical clustered or physical destination modes. But for NUMAQ
> systems, interrupt routing has to know about the local nodes and have
> necessary logic to do the routing withing local node.

NUMA-Q doesn't have to know about the local nodes. I set it up to use
physical delivery broadcast, which is a node-local broadcast ... gave
me NUMA affinity for free. I could also use logical clustered (p3 style)
addressing, and work out all the node locality, but I don't see the point.

M.

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