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

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Message-ID: <45F53B60.8020908@gmail.com>
Date:	Mon, 12 Mar 2007 20:37:04 +0900
From:	Tejun Heo <htejun@...il.com>
To:	Mathieu Bérard <Mathieu.Berard@...ns.org>
CC:	Jeff Garzik <jeff@...zik.org>, 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>,
	linux-ide@...r.kernel.org,
	Michal Jaegermann <michal@...pspace.math.ualberta.ca>,
	Fabio Comolli <fabio.comolli@...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

Mathieu Bérard wrote:
> Jeff Garzik a écrit :
>> Adrian Bunk wrote:
>>> Subject    : NCQ problem with ahci and Hitachi drive
>>> References : http://lkml.org/lkml/2007/3/4/178
>>> Submitter  : Mathieu Bérard <Mathieu.Berard@...ns.org>
>>> Status     : unknown
>> according to the last message in that thread, it sounds like ACPI and
>> interrupt problems
>>
> Hi,
> after more testing with a 2.6.21-rc3, it appears that after several ata
> errors the boot process
> somehow continued as normal, after a "NCQ disabled due to excessive
> errors" message.
> "pci=noacpi" or "noacpi" parameters workarounds the problem "irqpoll"
> does nothing.

I was mistaken.  It can't be IRQ routing problem.  I somehow thought the
port was a ata_piix one.  Considering the reported broken NCQ feature on
the device GTF might be mangling with the drive to disable NCQ or
something.  Does giving "libata.noacpi=1" make any difference?

Thanks.

-- 
tejun
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