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Date:	Sun, 05 Nov 2006 08:17:53 -0700
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Adrian Bunk <bunk@...sta.de>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"Bryan O'Sullivan" <bos@...pentine.com>
Subject: Re: 2.6.19-rc4: known unfixed regressions (v3)

Adrian Bunk <bunk@...sta.de> writes:

> This email lists some known regressions in 2.6.19-rc4 compared to 2.6.18
> that are not yet fixed in Linus' tree.
>
> If you find your name in the Cc header, you are either submitter of one
> of the bugs, maintainer of an affectected subsystem or driver, a patch
> of you caused a breakage or I'm considering you in any other way possibly
> involved with one or more of these issues.
>
> Due to the huge amount of recipients, please trim the Cc when answering.
>
>
> Subject    : ipath driver MCEs system on load when HT chip present
> References : http://bugzilla.kernel.org/show_bug.cgi?id=7455
> Submitter  : Bryan O'Sullivan <bos@...pentine.com>
> Caused-By  : Eric W. Biederman <ebiederm@...ssion.com>
> Status     : unknown

Status in problem is being debugged. I have posted some infrastructure
patches that should allow Bryan to fix his driver cleanly.  

I did not cause this. The ipath HTX card driver's irq handling has
never been anything but a hack.  It has never worked correctly even in
the instances it worked.  It only worked on i386 or x86_64 when
CONFIG_PCI_MSI was enabled but did not use MSI.  It was relying on the
implementation detail that the architecture specific vector number was
placed in the dev->irq.  dev->irq is actually meaningless on this card
as it doesn't have any ordinary pci interrupts.

So while I am happy to take credit for flushing this bug out I did not
introduce it.

Eric
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