Re: [Xen-devel] [PATCH v2] xen/sched: fix onlining cpu with core scheduling active

[Dario Faggioli <dfaggioli@xxxxxxxx>]

On Tue, 2020-03-10 at 10:06 +0100, Juergen Gross wrote:
> When onlining a cpu cpupool_cpu_add() checks whether all siblings of
> the new cpu are free in order to decide whether to add it to
> cpupool0.
> In case the added cpu is not the last sibling to be onlined this test
> is wrong as it only checks for all online siblings to be free. The
> test should include the check for the number of siblings having
> reached the scheduling granularity of cpupool0, too.
> 
> Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
>
Reviewed-by: Dario Faggioli <dfaggioli@xxxxxxxx>

Regards
-- 
Dario Faggioli, Ph.D
http://about.me/dario.faggioli
Virtualization Software Engineer
SUSE Labs, SUSE https://www.suse.com/
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