diff --git a/[refs] b/[refs]
index a66e691c997d..99dae8a8ae25 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 46fb9be93b15bd8315622ad2f85f9516c064a785
+refs/heads/master: dcffc1b29115cc26686b8ae62b587e63f0e139f0
diff --git a/trunk/arch/microblaze/include/asm/dma.h b/trunk/arch/microblaze/include/asm/dma.h
index 0967fa04fc5e..08c073badf19 100644
--- a/trunk/arch/microblaze/include/asm/dma.h
+++ b/trunk/arch/microblaze/include/asm/dma.h
@@ -9,8 +9,13 @@
 #ifndef _ASM_MICROBLAZE_DMA_H
 #define _ASM_MICROBLAZE_DMA_H
 
+#ifndef CONFIG_MMU
 /* we don't have dma address limit. define it as zero to be
  * unlimited. */
 #define MAX_DMA_ADDRESS		(0)
+#else
+/* Virtual address corresponding to last available physical memory address.  */
+#define MAX_DMA_ADDRESS (CONFIG_KERNEL_START + memory_size - 1)
+#endif
 
 #endif /* _ASM_MICROBLAZE_DMA_H */