diff --git a/[refs] b/[refs]
index 49bd0496a808..0aa4900acd7f 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 7cb72ef4d39978e6e07415a2d552b06d567c3079
+refs/heads/master: 2e98f10a7a87ebae4dcc3949028a32008b46ceef
diff --git a/trunk/drivers/gpu/drm/radeon/r600.c b/trunk/drivers/gpu/drm/radeon/r600.c
index 4facbab20456..6434d6af7d52 100644
--- a/trunk/drivers/gpu/drm/radeon/r600.c
+++ b/trunk/drivers/gpu/drm/radeon/r600.c
@@ -370,6 +370,9 @@ void r600_pcie_gart_tlb_flush(struct radeon_device *rdev)
 	unsigned i;
 	u32 tmp;
 
+	/* flush hdp cache so updates hit vram */
+	WREG32(R_005480_HDP_MEM_COHERENCY_FLUSH_CNTL, 0x1);
+
 	WREG32(VM_CONTEXT0_INVALIDATION_LOW_ADDR, rdev->mc.gtt_start >> 12);
 	WREG32(VM_CONTEXT0_INVALIDATION_HIGH_ADDR, (rdev->mc.gtt_end - 1) >> 12);
 	WREG32(VM_CONTEXT0_REQUEST_RESPONSE, REQUEST_TYPE(1));