From: David Woodhouse <dwmw2@infradead.org>
To: Andrew Morton <akpm@linux-foundation.org>,
Faidon Liambotis <paravoid@debian.org>,
Matt Domsch <Matt_Domsch@dell.com>
Cc: "Siddha, Suresh B" <suresh.b.siddha@intel.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Jesse Barnes <jbarnes@virtuousgeek.org>,
bugzilla-daemon@bugzilla.kernel.org,
bugme-daemon@bugzilla.kernel.org, bero@arklinux.org,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [Bugme-new] [Bug 14003] New: Infinite loop on bootup while handling DMAR
Date: Thu, 20 Aug 2009 08:52:28 +0100 [thread overview]
Message-ID: <1250754748.8974.17.camel@macbook.infradead.org> (raw)
In-Reply-To: <20090819142634.0fc550d1.akpm@linux-foundation.org>
On Wed, 2009-08-19 at 14:26 -0700, Andrew Morton wrote:
> > http://bugzilla.kernel.org/show_bug.cgi?id=14003
> > Summary: Infinite loop on bootup while handling DMAR
>
> That's a box-killing post-2.6.30 regression.
It's a BIOS bug -- the user's BIOS is written by idiots who obviously
shipped it without any QA whatsoever.
As far as I can tell, 2.6.30 aborted early because of a _different_ BIOS
bug, but now we cope with that particular bug and we fall over the next
bug. Or just come across them in a different order.
The IOMMU on this board can _never_ have worked. Just disable it.
Or use a board with open source firmware available, and this kind of
crap won't happen. (At least if it does, you'll be able to fix it).
--
dwmw2
next prev parent reply other threads:[~2009-08-20 7:56 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <bug-14003-10286@http.bugzilla.kernel.org/>
2009-08-19 21:26 ` Andrew Morton
2009-08-20 1:15 ` Suresh Siddha
2009-08-20 7:52 ` David Woodhouse [this message]
2009-08-20 8:01 ` [PATCH] intel-iommu: Work around yet another BIOS bug David Woodhouse
2009-08-20 9:44 ` Andrew Morton
2009-08-20 11:14 ` David Woodhouse
2009-08-20 18:48 ` Andrew Morton
2009-08-20 12:36 ` Matthew Wilcox
2009-08-20 19:29 ` Ray Lee
2009-08-20 19:32 ` David Woodhouse
2009-08-20 21:47 ` Grant Grundler
2009-08-20 21:54 ` David Woodhouse
2009-08-31 13:15 ` Carl-Daniel Hailfinger
2009-08-20 8:40 ` [Bugme-new] [Bug 14003] New: Infinite loop on bootup while handling DMAR Faidon Liambotis
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