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From: Pavel Machek <pavel@ucw.cz>
To: Bill Davidsen <davidsen@tmr.com>
Cc: David Greaves <david@dgreaves.com>,
	Linux Kernel M/L <linux-kernel@vger.kernel.org>
Subject: Re: [2.6.21.1] resume doesn't run suspended kernel?
Date: Sun, 27 May 2007 21:20:03 +0000	[thread overview]
Message-ID: <20070527212002.GI3989@ucw.cz> (raw)
In-Reply-To: <4659834E.4070506@tmr.com>

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

  parent reply	other threads:[~2007-05-27 21:20 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-05-26 22:42 Bill Davidsen
2007-05-27  8:41 ` David Greaves
2007-05-27 13:10   ` Bill Davidsen
2007-05-27 15:26     ` David Greaves
2007-05-27 21:20     ` Pavel Machek [this message]
2007-05-27 21:17   ` Pavel Machek
2007-05-27 21:14 ` Pavel Machek
2007-05-28  3:15   ` Bill Davidsen
2007-05-28 13:21     ` Bill Davidsen
2007-05-28 13:26       ` Pavel Machek
2007-05-28 17:57         ` Rafael J. Wysocki
2007-05-28 22:48           ` Nigel Cunningham
2007-05-29 11:29             ` Pavel Machek
2007-05-29 12:03               ` Rafael J. Wysocki
2007-05-29 12:23                 ` Nigel Cunningham
2007-05-29 12:40                 ` Pavel Machek
2007-05-29 13:13                   ` Nigel Cunningham
2007-05-29 21:51                     ` Rafael J. Wysocki
2007-06-04 11:02                     ` Pavel Machek
2007-06-04 11:05                       ` Nigel Cunningham
2007-06-05  7:23 ` Stefan Seyfried
2007-06-05 14:08   ` Bill Davidsen
     [not found] <fa.rXcMBo+RSE/6L84EBqFCeyFql/k@ifi.uio.no>
2007-05-27  2:44 ` Robert Hancock

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