On Tue, Nov 20 2007, Andi Kleen wrote:
>
> > Which in turn enables the iommu_merge functionality in gart_map_sg().
>
> > for_each_sg(sg, s, nents, i) {
>
> Hmm, another thought. Maybe this code just has trouble with the new
> linked SG lists and it's not really a SB600 problem?
>
> I did a quick test on two ATI machines with older chipset and
> iommu=force,merge and it didn't show a problem though.
chained sg lists aren't enabled on libata, so it should not affect
libata drivers.
--
Jens Axboe
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