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From: Pavel Machek <pavel@ucw.cz>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: LKML <linux-kernel@vger.kernel.org>, Andrew Morton <akpm@osdl.org>
Subject: Re: [RFC][PATCH -mm 0/2] Detect clock skew during suspend
Date: Sun, 13 Aug 2006 23:21:31 +0200	[thread overview]
Message-ID: <20060813212131.GA6231@elf.ucw.cz> (raw)
In-Reply-To: <200608132303.00012.rjw@sisk.pl>

Hi!

> If the CMOS timer is changed when the system is suspended to disk in such a
> way that the time during the resume turns out to be earlier than the time
> before the suspend, the resume often fails and the system hangs (spins
> forever in the idle thread) due to driver problems.
> 
> For this reason it seems reasonable to make the timer .resume() routines
> detect such situations and prevent them from happening, which is done
> in the following two patches for i386 and x86_64.

"Clock skew detected"... Maybe "time going backwards detected" ?

Anyway, patches look good to me, ACK.
									Pavel

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

      parent reply	other threads:[~2006-08-13 21:22 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-08-13 21:02 Rafael J. Wysocki
2006-08-13 21:06 ` [RFC][PATCH -mm 1/2] i386: " Rafael J. Wysocki
2006-08-14 19:58   ` john stultz
2006-08-14 20:59     ` Rafael J. Wysocki
2006-08-13 21:07 ` [RFC][PATCH -mm 2/2] x86_64: " Rafael J. Wysocki
2006-08-14 18:15   ` Andi Kleen
2006-08-13 21:21 ` Pavel Machek [this message]

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