linux-kernel - Re: [5/6] 2.6.21-rc2: known regressions

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Message-ID: <20070306122030.GA4317@mellanox.co.il>
Date:	Tue, 6 Mar 2007 14:20:30 +0200
From:	"Michael S. Tsirkin" <mst@...lanox.co.il>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Adrian Bunk <bunk@...sta.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Michal Piotrowski <michal.k.k.piotrowski@...il.com>,
	Emil Karlson <jkarlson@...hut.fi>,
	Soeren Sonnenburg <kernel@....de>, Len Brown <lenb@...nel.org>
Subject: Re: [5/6] 2.6.21-rc2: known regressions

> Quoting Ingo Molnar <mingo@...e.hu>:
> Subject: Re: [5/6] 2.6.21-rc2: known regressions
> 
> 
> * Michael S. Tsirkin <mst@...lanox.co.il> wrote:
> 
> > > > Not yet for me unfortunately, although this seems to help.
> > > > Is this the patch I should have applied?
> > > > http://lkml.org/lkml/2007/3/5/445
> > > > 
> > > > With this applied, on resume I get *some* screen output soon after 
> > > > resume (e.g. with s2ram I get several characters on VGA, X starts 
> > > > drawing some windows) but then the crescent symbol starts blinking 
> > > > again and the system hangs.
> > > 
> > > could you try this via s2ram on a text console, to see whether the 
> > > kernel spits out any warning before it locks up?
> > 
> > Yes, that's what I did. Unfortunately only a couple of characters were 
> > shown before it locked up.
> > 
> > I still need to check what does this do in the NO_HZ configuration.
> > 
> > BTW, Ingo, can you suspend/resume any number of times with this patch?
> 
> yeah, i can now suspend/resume an arbitrary number of times, vga, 
> network, SATA all works fine after that. (i tried it 5 times)
> 
> i also have the patch below applied - but i dont think it should make a 
> difference to your case. (maybe it does though)

Nope, system hangs on resume with or without this patch applied.

> I've attached my config as well.

Haven't tried that yet.

-- 
MST
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