From: Arnd Hannemann <arnd@arndnet.de>
To: linux-kernel@vger.kernel.org
Cc: dwmw2@infradead.org, iommu@lists.linux-foundation.org
Subject: Re: 3.2rc1: bootup fails: DRHD: handling fault status reg 2
Date: Tue, 15 Nov 2011 01:53:33 +0100 [thread overview]
Message-ID: <4EC1B80D.5000102@arndnet.de> (raw)
In-Reply-To: <4EC19738.8050007@arndnet.de>
Hi,
Am 14.11.2011 23:33, schrieb Arnd Hannemann:
> when trying to boot kernel 3.2rc1 on my thinkpad t510 I get an endless loop of errors:
>
> DRHD: handling fault status reg 2
> DMAR: [DMA Read] Request device [0d:00.0] fault addr fffff000
> DMAR: [fault reason 02] Present bit in context entry is clear
>
> screenshot can be found here:
> http://arndnet.de/lkml/screenshot3.2rc1.jpg
>
> kernel 3.1.1 is booting up flawlessly.
I must have inadvertently enabled CONFIG_INTEL_IOMMU_DEFAULT_ON in my config
for 3.2-rc1.
With disabled CONFIG_INTEL_IOMMU_DEFAULT_ON my thinkpad boots up again.
Not sure if this is expected?
Best regards
Arnd
next prev parent reply other threads:[~2011-11-15 0:53 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-14 22:33 3.2rc1: bootup fails: DRHD: handling fault status reg 2 Arnd Hannemann
2011-11-15 0:53 ` Arnd Hannemann [this message]
2011-11-15 4:31 ` Robert Hancock
2011-11-15 6:29 ` Arnd Hannemann
2011-11-15 4:36 ` Chris Wright
2011-11-15 6:34 ` Arnd Hannemann
2011-11-15 8:55 ` David Woodhouse
2011-11-16 4:01 ` Alex Williamson
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