1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index f7ac61ee1504..2c150dee78a7 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/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);