[PATCH 7/9] [TEST] explicitly set cache level for internal buffers

[Robert Beckett]

by default i915_ttm_cache_level() decides I915_CACHE_LLC if HAS_SNOOP.
this is divergent from existing internal code which only considers
HAS_LLC.

check to see if this fixes gen3-5 for gem_exec_create at basic@smem
and other hangs.
---
 drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c
index a10716f4e717..8ac2f7dabf1a 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c
@@ -46,7 +46,7 @@ static enum i915_cache_level
 i915_ttm_cache_level(struct drm_i915_private *i915, struct ttm_resource *res,
 		     struct ttm_tt *ttm)
 {
-	return ((HAS_LLC(i915) || HAS_SNOOP(i915)) &&
+	return (HAS_LLC(i915) &&
 		!i915_ttm_gtt_binds_lmem(res) &&
 		ttm->caching == ttm_cached) ? I915_CACHE_LLC :
 		I915_CACHE_NONE;
-- 
2.25.1