tree 0c65a9e811897758f568b73ee0466b1f5fa66f19
parent 6a562e3daee217ce99fe0e31150acd89a5b22606
author Chris Wilson <chris@chris-wilson.co.uk> 1333976386 +0100
committer Daniel Vetter <daniel.vetter@ffwll.ch> 1334139264 +0200

drm/i915/ringbuffer: Exclude last 2 cachlines of ring on 845g

The 845g shares the errata with i830 whereby executing a command
within 2 cachelines of the end of the ringbuffer may cause a GPU hang.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>