[PATCH v15 4/5] drm/i915: Do not allocate unused PPAT entries

[Chris Wilson]

Quoting Zhi Wang (2017-09-12 08:42:27)
> Only PPAT entries 0/2/3/4 are using. Remove extra PPAT entry allocation
> during initialization.
> 
> v8:
> 
> - Move ppat_index() into i915_gem_gtt.c. (Chris)
> - Change the name of ppat_bits_to_index to ppat_index.
> 
> Suggested-by: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
> Signed-off-by: Zhi Wang <zhi.a.wang at intel.com>
> Cc: Ben Widawsky <benjamin.widawsky at intel.com>
> Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
> Cc: Chris Wilson <chris at chris-wilson.co.uk>
> Reviewed-by: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
-Chris