linux-kernel - Re: [2.6.21.1] resume doesn't run suspended kernel?

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Message-ID: <20070527212002.GI3989@ucw.cz>
Date:	Sun, 27 May 2007 21:20:03 +0000
From:	Pavel Machek <pavel@....cz>
To:	Bill Davidsen <davidsen@....com>
Cc:	David Greaves <david@...eaves.com>,
	Linux Kernel M/L <linux-kernel@...r.kernel.org>
Subject: Re: [2.6.21.1] resume doesn't run suspended kernel?

Hi!

> >It is very dangerous to attempt a resume with a 
> >different kernel than the one
> >that has gone to sleep.
> >Different kernels may be compiled with different 
> >options that affect where or
> >how in-memory structures are saved.
> >
> If the mainline resume is depending on that no wonder 
> resume is so fragile. User action can change order of 
> module loads, kmalloc calls move allocated structures, 
> etc. Counting on anything to be locked in place seems 
> naive.

Look at code before spreading FUD. (suspend and suspend2 are same in
this matter).

							Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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