On Mon, Aug 12, 2013 at 12:38:03PM +0300, Ville Syrjälä wrote: > On Sun, Aug 11, 2013 at 11:17:28PM +0100, Chris Wilson wrote: > > For unfathomable reasons this alignment appears to be required for tiled > > scanouts being read from stolen memory. I can find no reference in the > > w/a db to support this requirement, but the evidence of my own eyes says > > this prevents many headaches. > > > > Note that I have not tricked anything older than Sandybridge into using > > stolen tiled scanouts, so the extra alignment may be required there as > > well. > > Strange. I can't find anything except async flips and vt-d which would > require 256k alignment.
I can empathically state it is required though. It might not be 256k, that's just the first value that stopped giving me headaches. :) -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
