On 06/23/2013 01:30 PM, Dave Airlie wrote: >>>> Why do you care about performance when PAT is disabled? > > breaking old boxes just because, is just going to get reverted when I > get the first regression report that you broke old boxes. > Not "just because", but *if* the choice is between breaking old boxes and breaking new boxes I'll take the latter. > Andy Lutomirski just submitted a bunch of patches to clean up the DRM > usage of mtrrs, they are in drm-next, afaik we no longer add them on > PAT systems. Fantastic news. No issue, then, and no need to break anything. The only problem I see with having ioremap_wc() installing an MTRR on non-PAT, rather than pushing that into the drivers which is clearly not the right thing, is that we will need a hook to uninstall it when the mapping is destroyed. -hpa _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
