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xen-devel
Re: [Xen-devel] [PATCH] Avoid race when moving cpu between cpupools
Juergen Gross wrote:
Moving cpus between cpupools is done under the schedule lock of the moved cpu.
When checking a cpu being member of a cpupool this must be done with the lock
of that cpu being held.
I have reviewed and tested the patch. It fixes my problem. My script has
been running for several hundred iterations without any Xen crash,
whereas without the patch the hypervisor crashed mostly at the second
iteration.
Thanks Juergen and George for the persistent work!
Hot-unplugging of physical cpus might encounter the same problems, but this
should happen only very rarely.
Signed-off-by: juergen.gross@xxxxxxxxxxxxxx
Acked-by: Andre Przywara <andre.przywara@xxxxxxx>
Keir, please apply for 4.1.0.
Regards,
Andre.
--
Andre Przywara
AMD-Operating System Research Center (OSRC), Dresden, Germany
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