Re: nommu_map_sg: overflow with ata_piix?

[Muli Ben-Yehuda]

On Mon, Mar 20, 2006 at 07:16:37PM -0800, Roland Dreier wrote:
> > nommu_map_sg: overflow 11b8a9000+4096 of device mask ffffffff
> 
> Never mind, I'm (sort of) an idiot.  The kernel that complained like
> that had CONFIG_GART_IOMMU=n -- I foolishly thought, "I have a Xeon,
> which can't do GART IOMMU, so I don't need that option."  I didn't
> realize that it also enables swiotlb.  Once I read the help text I was
> OK.

In theory it should be possible to turn just swiotlb on, but at the
moment it requires gart due to the way pci-dma is structured. If
someone is looking for a little side project, this could be a good
one.

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

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/