Index: kernel/generic/include/mm/as.h
===================================================================
--- kernel/generic/include/mm/as.h	(revision 67b152eac7904a434fc44aeec4f36587b34d9f81)
+++ kernel/generic/include/mm/as.h	(revision d1e844029e7efa0c93a3a78b306a196e4af6da8f)
@@ -61,10 +61,4 @@
 #define USER_ADDRESS_SPACE_END      USER_ADDRESS_SPACE_END_ARCH
 
-#ifdef USTACK_ADDRESS_ARCH
-	#define USTACK_ADDRESS  USTACK_ADDRESS_ARCH
-#else
-	#define USTACK_ADDRESS  (USER_ADDRESS_SPACE_END - (STACK_SIZE - 1))
-#endif
-
 /** Kernel address space. */
 #define FLAG_AS_KERNEL  (1 << 0)