--- zzzz-none-000/linux-2.6.39.4/arch/arm/include/asm/memory.h	2011-08-03 19:43:28.000000000 +0000
+++ puma6-atom-6490-729/linux-2.6.39.4/arch/arm/include/asm/memory.h	2021-11-10 13:38:14.000000000 +0000
@@ -32,10 +32,11 @@
  * TASK_SIZE - the maximum size of a user space task.
  * TASK_UNMAPPED_BASE - the lower boundary of the mmap VM area
  */
+#ifndef PAGE_OFFSET
 #define PAGE_OFFSET		UL(CONFIG_PAGE_OFFSET)
 #define TASK_SIZE		(UL(CONFIG_PAGE_OFFSET) - UL(0x01000000))
 #define TASK_UNMAPPED_BASE	(UL(CONFIG_PAGE_OFFSET) / 3)
-
+#endif
 /*
  * The maximum size of a 26-bit user space task.
  */