linux-kernel - nonboot cpu on SMP suspend

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Date:	Wed, 18 Mar 2009 14:25:32 +0800
From:	Li Yang <leoli@...escale.com>
To:	linux-kernel@...r.kernel.org
Subject: nonboot cpu on SMP suspend

Hi all,

I'm curious why we need to un-plug all the nonboot cpus before suspend
and start them all over again after the suspend(ACPI sleep)?  I mean
if we can bring the booting cpu back to the exact state as before
suspend, why can't we just do the same for non-booting cpus?  And that
will be much faster.  Any thought?  Thanks.

- Leo
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