Messages in this thread | | | Date | Wed, 6 Jul 2016 12:51:12 +0200 | From | Martin Schwidefsky <> | Subject | Re: [PATCH 2/2] s390/mm: use ipte range to invalidate multiple page table entries |
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On Wed, 06 Jul 2016 17:26:08 +0800 "Hillf Danton" <hillf.zj@alibaba-inc.com> wrote:
> > > > You are still a bit cryptic, > > > Sorry, Sir, simply because I'm not native English speaker. > > > are you trying to tell me that your hint is > > about trying to avoid the preempt_enable() call? > > > Yes, since we are already in the context with page table lock held.
Ok, got it. An option would be to drop the preempt_disable/preempt_enable, add "BUG_ON(preemptible())" and use raw_smp_processor_id. But I wonder if it is worth the effort.
-- blue skies, Martin.
"Reality continues to ruin my life." - Calvin.
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