Re: [Xen-devel] [PATCH 4/6] xen: don't free percpu areas during suspend

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 18.03.19 at 14:11, <jgross@xxxxxxxx> wrote:
> Instead of freeing percpu areas during suspend and allocating them
> again when resuming keep them. Only free an area in case a cpu didn't
> come up again when resuming.

There's another aspect here which needs at least mentioning:
Right now, CPUs coming back up have their per-CPU data
cleared. Not doing so may indeed be an improvement in
some cases (like statistics collected), but may also get in the
way in other cases.

Jan



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