linux-kernel - Re: [3/6] 2.6.21-rc4: known regressions

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Message-ID: <20070328183226.GA16415@elte.hu>
Date:	Wed, 28 Mar 2007 20:32:26 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	"Michael S. Tsirkin" <mst@....mellanox.co.il>
Cc:	Maxim <maximlevitsky@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Jeff Chua <jeff.chua.linux@...il.com>,
	Adrian Bunk <bunk@...sta.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>, pavel@...e.cz,
	linux-pm@...ts.osdl.org, gregkh@...e.de,
	linux-pci@...ey.karlin.mff.cuni.cz,
	Jens Axboe <jens.axboe@...cle.com>,
	Len Brown <lenb@...nel.org>, linux-acpi@...r.kernel.org,
	jgarzik@...ox.com, linux-ide@...r.kernel.org
Subject: Re: [3/6] 2.6.21-rc4: known regressions


* Michael S. Tsirkin <mst@....mellanox.co.il> wrote:

> Bingo!
> 
> The patch below fixes the two problems (listed above) with resume from 
> RAM that I have observed on my T60 with 2.6.21-rc5: with this patch 
> applied, and with CONFIG_NO_HZ unset, date advances correctly, X 
> functions properly and there is no delay on first disk access.
> 
> Thanks very much.
[...]
> 
> Maxim, do you plan to send this upstream?

we'll fix this the right way tomorrow, by adding a proper suspend/resume 
sysdev handler - the lapic clockevents driver already has that. Maxim 
definitely deserves alot of kudos for having found this bug!

	Ingo
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