> Hm, in that case it looks like your iommu works more like the gtt on intel > chips Don't overgeneralize there - on the GMA500/600 the GTT doesn't allow CPU side access of the GTT map (ie you can't use it to linearise pages for CPU view) and the 3600 is even stranger.... Alan -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html