linux-kernel - Re: [3/6] 2.6.21-rc2: known regressions

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Date:	Sun, 4 Mar 2007 20:58:59 -0700
From:	Michal Jaegermann <michal@...pspace.math.ualberta.ca>
To:	Adrian Bunk <bunk@...sta.de>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Mathieu Bérard <Mathieu.Berard@...ns.org>,
	jgarzik@...ox.com, linux-ide@...r.kernel.org,
	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: [3/6] 2.6.21-rc2: known regressions

On Mon, Mar 05, 2007 at 02:50:36AM +0100, Adrian Bunk wrote:
> This email lists some known regressions in 2.6.21-rc2 compared to 2.6.20
> that are not yet fixed in Linus' tree.
....
> Subject    : kernels fail to boot with drives on ATIIXP controller
> References : https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=229621
> Submitter  : Michal Jaegermann <michal@...pspace.math.ualberta.ca>
> Status     : unknown

Alan added comment to my posting that my problems are caused by
messed up IRQ routing on that box I tried.  Indeed, I can boot
kernel 2.6.20-1.2962.fc7, which really is 2.6.21-rc2, provided
I will use 'acpi=off irqpoll'.  Anything else and a boot silently
dies if 'acpi=off' is skipped or is not finding disk if 'irqpoll'
is missing.

Somehow 2.6.19 is booting on the same hardware without "valliant
efforts"; OTOH 'ahci' driver was not used there.

    Michal
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