drm/i915: Only set gem object L3 cache level for IVB devices

Do some further clean up based on the initial review of
drm/i915: Separate cherryview from valleyview.

In this case, in i915_gem_alloc_context_obj() only call
i915_gem_object_set_cache_level() for Ivy Bridge devices
since later platforms don't have L3 control bits in the PTE.

v2: Expand comment to mention snooping requirement. (Ville, Imre)

Cc: Ville Syrjälä <[email protected]>
Cc: Rodrigo Vivi <[email protected]>
Signed-off-by: Wayne Boyer <[email protected]>
Signed-off-by: Daniel Vetter <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
Reviewed-by: Ville Syrjälä <[email protected]>

0 files changed, 0 insertions, 0 deletions