[Intel-gfx] [PATCH] drm/i915: Make contexts non-snooped on non-LLC platforms

[ville.syrjala at linux.intel.com]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

We don't do CPU access to GPU contexts so making the GPU access snoop
the CPU caches seems silly, and potentially expensive.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/i915_gem_context.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c
index 6043062..746fb23 100644
--- a/drivers/gpu/drm/i915/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/i915_gem_context.c
@@ -240,7 +240,7 @@ __create_hw_context(struct drm_device *dev,
 		return ERR_PTR(-ENOMEM);
 	}
 
-	if (INTEL_INFO(dev)->gen >= 7) {
+	if (INTEL_INFO(dev)->gen >= 7 && HAS_LLC(dev)) {
 		ret = i915_gem_object_set_cache_level(ctx->obj,
 						      I915_CACHE_L3_LLC);
 		/* Failure shouldn't ever happen this early */
-- 
1.8.3.2