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Re: [Xen-users] Xen 3.0.0 32bit-pae (testing changeset 8270) crashes(pgtable.c:284, kernel bug?)

On Thu, Feb 02, 2006 at 11:54:30AM -0500, Javier Guerra wrote:
> On Thursday 02 February 2006 11:24 am, Petersson, Mats wrote:
> > This is why Mark Langsdorf (and probably others) have been working on an
> > IOMMU driver for Xen, to at least support AMD64 solutions for this type
> > of problem [unfortunately, the AMD IOMMU solution doesn't work on Intel
> > machines due to different hardware architecture :-( ].
> is this part of Pacifica? or should current opterons work with that?

Current Opterons use the gart for IOMMU support in mainline Linux, but
only if the kernel is compiled for x86-64. Mark posted a patch to
utilize the gart in Xen as well, but it hasn't been applied yet. So
yes, this should work with current Opterons in Linux todya, and in Xen
once Mark's patch is applied.

Muli Ben-Yehuda
http://www.mulix.org | http://mulix.livejournal.com/

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