tree 108839c739064c74491f993148a9049b59309676
parent 2c22569bba8af6c2976d5f9479fe54a53a39966b
author Chris Wilson <chris@chris-wilson.co.uk> 1375969266 +0100
committer Daniel Vetter <daniel.vetter@ffwll.ch> 1376126658 +0200

drm/i915: Allow the GPU to cache stolen memory

As a corollary to reviewing the interaction between LLC and our cache
domains, the GPU PTE bits are independent of the CPU PAT bits. As such
we can set the cache level on stolen memory based on how we wish the GPU
to cache accesses to it. So we are free to set the same default cache
levels as for normal bo, i.e. enable LLC cacheing by default where
appropriate.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>