diff --git a/[refs] b/[refs]
index 677d24333501..d17b1e76bcfa 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 335c07b7982eff480afdf8c9b25225511dd07031
+refs/heads/master: 20652097dadd9a7fb4d652f25466299974bc78f9
diff --git a/trunk/drivers/gpu/drm/i915/i915_gem_gtt.c b/trunk/drivers/gpu/drm/i915/i915_gem_gtt.c
index f7ac61ee1504..2c150dee78a7 100644
--- a/trunk/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/trunk/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -639,6 +639,10 @@ int i915_gem_gtt_init(struct drm_device *dev)
 	if (!pci_set_dma_mask(dev->pdev, DMA_BIT_MASK(40)))
 		pci_set_consistent_dma_mask(dev->pdev, DMA_BIT_MASK(40));
 
+#ifdef CONFIG_INTEL_IOMMU
+	dev_priv->mm.gtt->needs_dmar = 1;
+#endif
+
 	/* For GEN6+ the PTEs for the ggtt live at 2MB + BAR0 */
 	gtt_bus_addr = pci_resource_start(dev->pdev, 0) + (2<<20);
 	dev_priv->mm.gtt->gma_bus_addr = pci_resource_start(dev->pdev, 2);