On 03/09/2015 04:49 PM, Dario Faggioli wrote:
> 93be8285 ("update domU's node-affinity on the cpupool_unassign_cpu()
> path") does the right thing, but does it too early. In fact, it
> is necessary to call domain_update_node_affinity() when a pCPU is
> removed from a cpupool, but that must happen after the pCPU is
> really gone from there.
>
> More specifically, it is important that the update happens not
> before cpu_disable_scheduler() is called on that pCPU, to give
> that function the chance to fixup the vCPU affinity of the
> domains residing in the cpupool, if that is necessary.
It looks like domain_update_node_affinity() is already called for each
domain in the cpupool in cpu_disable_scheduler(). It doesn't look like
there should be a need to call it twice. Can we just remove the call to
domain_update_node_affinity() in cpupool_unassign_cpu() and not add it back?
-George
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