From: Scott Wood <scottwood@freescale•com>
To: Johannes Berg <johannes@sipsolutions•net>
Cc: linuxppc-dev@lists•ozlabs.org,
Wang Dongsheng <dongsheng.wang@freescale•com>
Subject: Re: [PATCH] powerpc: add Book E support to 64-bit hibernation
Date: Fri, 22 Mar 2013 17:14:50 -0500 [thread overview]
Message-ID: <1363990490.24790.12@snotra> (raw)
In-Reply-To: <1363949917.8238.25.camel@jlt4.sipsolutions.net> (from johannes@sipsolutions.net on Fri Mar 22 05:58:37 2013)
On 03/22/2013 05:58:37 AM, Johannes Berg wrote:
> On Tue, 2013-03-19 at 17:16 -0500, Scott Wood wrote:
>=20
> > > > I wonder about kernel modules, though flushing 32 MiB wouldn't =20
> be
> > > > adequate there.
> > >
> > > Good question, but would they be running? You have to have =20
> everything
> > > 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 =20
> loading
> > all modules that were loaded before suspend (as they're normally not
> > swappable)? I'm not too familiar with what gets saved where.
>=20
> Yes, they would be restored since full memory is restored, but the
> kernel doing the restore hasn't typically had a chance to load =20
> modules.
> Although with uswsusp there probably are ways it can already have.
If we're loading executable code that wasn't there before[1], we need =20
to flush -- but there's no reason why modules would only be in the =20
lower 32 MiB.
-Scott
[1] within the resume process, not before suspend=
next prev parent reply other threads:[~2013-03-22 22:15 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-14 3:36 [PATCH] powerpc: add Book E support to 64-bit hibernation Wang Dongsheng
2013-03-14 8:37 ` Johannes Berg
2013-03-14 16:52 ` Scott Wood
2013-03-15 15:22 ` Johannes Berg
2013-03-18 22:12 ` Scott Wood
2013-03-19 20:55 ` Johannes Berg
2013-03-19 21:10 ` Scott Wood
2013-03-19 21:22 ` Johannes Berg
2013-03-19 22:16 ` Scott Wood
2013-03-22 10:58 ` Johannes Berg
2013-03-22 22:14 ` Scott Wood [this message]
2013-04-02 5:28 ` Wang Dongsheng-B40534
2013-04-03 0:34 ` Scott Wood
2013-04-03 5:36 ` Wang Dongsheng-B40534
2013-04-03 20:15 ` Scott Wood
2013-04-07 3:01 ` Wang Dongsheng-B40534
2013-04-08 18:24 ` Scott Wood
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