linux-kernel - Re: and try remove another quirk on this computers Re: [3/6] 2.6.21-rc2: known regressions

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Date:	Sun, 11 Mar 2007 04:32:55 +0000
From:	Sergio Monteiro Basto <sergio@...giomb.no-ip.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Mathieu Bérard <Mathieu.Berard@...ns.org>,
	Jeff Garzik <jeff@...zik.org>, Adrian Bunk <bunk@...sta.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-ide@...r.kernel.org,
	Michal Jaegermann <michal@...pspace.math.ualberta.ca>,
	Fabio Comolli <fabio.comolli@...il.com>,
	Tejun Heo <htejun@...il.com>,
	Janosch Machowinski <jmachowinski@....de>,
	Lukas Hejtmanek <xhejtman@...muni.cz>,
	Meelis Roos <mroos@...ux.ee>,
	Olivier Mondoloni <darkcore71@...oo.fr>,
	Thomas Renninger <trenn@...e.de>,
	Robert Moore <robert.moore@...el.com>, lenb@...nel.org,
	linux-acpi@...r.kernel.org
Subject: Re: and try remove another quirk on this computers Re: [3/6]
	2.6.21-rc2: known regressions

On Fri, 2007-03-09 at 21:41 -0800, Linus Torvalds wrote:
> 
> On Sat, 10 Mar 2007, Sergio Monteiro Basto wrote:
> > 
> > With this quirk I got this oops on hibernate (but computer still
> > working) 
> 
> Well, strictly speaking it's a warning, not an oops per se. 
> 
> What happens is that the quirk wants to do an "ioremap_nocache()", which 
> allocates memory, and that happens very early during initialization when 
> interrupts are disabled.
> 
> And you're really not supposed to allocate memory, except using 
> GFP_ATOMIC. But we've always been lax about that during early boot, so we 
> have stuff that does. And resume ends up doing a lot of the same things 
> early boot does, and shows issues like this.
> 
> So the quirk is probably still a good idea, and the warning message is 
> just that - a very scary warning message, but not an indicator that 
> anything is seriously screwed up for you.
> 
> (It is an indication of a real bug, though, even though it's harmless in 
> practice in this case)

Hi, thanks 
Just to write, I test last fedora kernel(2.6.20-1.2981.fc7) which is
based on 2.6.21-rc3-git5, without any problem, less than the scary
warning, talked in this email :)

Best regards,
-- 
Sérgio M. B.

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