[PATCH] powerpc: add Book E support to 64-bit hibernation
scottwood at freescale.com
Sat Mar 23 09:14:50 EST 2013
On 03/22/2013 05:58:37 AM, Johannes Berg wrote:
> On Tue, 2013-03-19 at 17:16 -0500, Scott Wood wrote:
> > > > I wonder about kernel modules, though flushing 32 MiB wouldn't
> > > > adequate there.
> > >
> > > Good question, but would they be running? You have to have
> > > built in that you need to load the image? Or maybe not, with the
> > > userspace image restoration that became possible at some point...
> > Is that all that's being restored in this step, or would we be
> > all modules that were loaded before suspend (as they're normally not
> > swappable)? I'm not too familiar with what gets saved where.
> Yes, they would be restored since full memory is restored, but the
> kernel doing the restore hasn't typically had a chance to load
> Although with uswsusp there probably are ways it can already have.
If we're loading executable code that wasn't there before, we need
to flush -- but there's no reason why modules would only be in the
lower 32 MiB.
 within the resume process, not before suspend
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