Hi Juergen,
> -----Original Message-----
> From: Juergen Gross <jgr...@suse.com>
> Subject: [PATCH-for-4.17] xen/sched: fix restore_vcpu_affinity() by removing
> it
>
> When the system is coming up after having been suspended,
> restore_vcpu_affinity() is called for each domain in order to adjust
> the vcpu's affinity settings in case a cpu didn't come to live again.
>
> The way restore_vcpu_affinity() is doing that is wrong, because the
> specific scheduler isn't being informed about a possible migration of
> the vcpu to another cpu. Additionally the migration is often even
> happening if all cpus are running again, as it is done without check
> whether it is really needed.
>
> As cpupool management is already calling cpu_disable_scheduler() for
> cpus not having come up again, and cpu_disable_scheduler() is taking
> care of eventually needed vcpu migration in the proper way, there is
> simply no need for restore_vcpu_affinity().
>
> So just remove restore_vcpu_affinity() completely.
>
> Fixes: 8a5d50dd0b04 ("xen: sched: simplify ACPI S3 resume path.")
> Reported-by: Marek Marczykowski-Górecki
> <marma...@invisiblethingslab.com>
> Signed-off-by: Juergen Gross <jgr...@suse.com>
Release-acked-by: Henry Wang <henry.w...@arm.com>
Kind regards,
Henry
