diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 11143b4982fc80326acda7ebbebcbbcce02a212e..a336c4d609a2d1f4c0650c095cf4d8e77d325e9f 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -106,7 +106,8 @@ static int gen6_ppgtt_enable(struct drm_device *dev)
 		uint32_t ecochk, gab_ctl, ecobits;
 
 		ecobits = I915_READ(GAC_ECO_BITS);
-		I915_WRITE(GAC_ECO_BITS, ecobits | ECOBITS_PPGTT_CACHE64B);
+		I915_WRITE(GAC_ECO_BITS, ecobits | ECOBITS_SNB_BIT |
+					 ECOBITS_PPGTT_CACHE64B);
 
 		gab_ctl = I915_READ(GAB_CTL);
 		I915_WRITE(GAB_CTL, gab_ctl | GAB_CTL_CONT_AFTER_PAGEFAULT);
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 0e4b7fb7d6913c44ef8fc56e7fa616ea68fe6867..96b361f9a32dcd1c49d4523ce1a47ad82adf915a 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -127,6 +127,7 @@
 #define   ECOCHK_PPGTT_CACHE4B		(0x0<<3)
 
 #define GAC_ECO_BITS			0x14090
+#define   ECOBITS_SNB_BIT		(1<<13)
 #define   ECOBITS_PPGTT_CACHE64B	(3<<8)
 #define   ECOBITS_PPGTT_CACHE4B		(0<<8)