Re: DMAR:[fault reason 02] Present bit in context entry is clear(firewire-ohci)

From: TomÃÅ JanouÅek
Date: Thu Dec 01 2011 - 04:14:47 EST


Hi,

On Wed, Nov 30, 2011 at 05:16:54PM +0100, Clemens Ladisch wrote:
> Try the patch in <https://bugzilla.redhat.com/show_bug.cgi?id=605888>
> that is intended to work around the bug in your Ricoh chip. Alternatively,
> disable VT-d or FireWire in the BIOS, or add the kernel parameter
> "intel_iommu=off".

Yeah, I guess that would work, I was just concerned with a fix not being in
the mainline. Surely we don't expect every ThinkPad user who wants to use
firewire and VT-d to apply the patch himself (the Fedora fix was to forcefully
disable IOMMU in presence of that Ricoh device). :-)

Regards,
--
TomÃÅ JanouÅek, a.k.a. Liskni_si, http://work.lisk.in/
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