RE: [PATCH] CPU hotplug returns CPUs to SAL

From: Luck, Tony <>
Date: 2005-02-10 06:51:20
>   But the BSP doesn't need to save anything.  We'll always have N-1 SAL
>states saved and N-1 CPUs that can be taken offline.  As long as we
>don't hard link a state to a specific CPU, we're in good shape.  I've
>been testing on my boxes with an order that intentionally gives CPUs the
>state saved off of another CPU on OS entry.  I appear to be able to make
>the BSP return to SAL as well, but I don't think the rest of the hotplug
>code is ready for this (the other CPU doesn't seem to be getting

That sounds worrying ... it assumes that the SAL thinks that
cpus are fungible, which might not be true on ccNUMA systems.

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Received on Wed Feb 9 14:51:41 2005

This archive was generated by hypermail 2.1.8 : 2005-08-02 09:20:35 EST