diff --git a/include/asm-arm/arch-aaec2000/memory.h b/include/asm-arm/arch-aaec2000/memory.h
index 24b51cc..9eceb41 100644
--- a/include/asm-arm/arch-aaec2000/memory.h
+++ b/include/asm-arm/arch-aaec2000/memory.h
@@ -17,8 +17,6 @@
 #define __virt_to_bus(x)	__virt_to_phys(x)
 #define __bus_to_virt(x)	__phys_to_virt(x)
 
-#ifdef CONFIG_DISCONTIGMEM
-
 /*
  * The nodes are the followings:
  *
@@ -27,42 +25,6 @@
  *   node 2: 0xf800.0000 - 0xfbff.ffff
  *   node 3: 0xfc00.0000 - 0xffff.ffff
  */
-
-/*
- * Given a kernel address, find the home node of the underlying memory.
- */
-#define KVADDR_TO_NID(addr) \
-	(((unsigned long)(addr) - PAGE_OFFSET) >> NODE_MAX_MEM_SHIFT)
-
-/*
- * Given a page frame number, convert it to a node id.
- */
-#define PFN_TO_NID(pfn) \
-	(((pfn) - PHYS_PFN_OFFSET) >> (NODE_MAX_MEM_SHIFT - PAGE_SHIFT))
-
-/*
- * Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory
- * and return the mem_map of that node.
- */
-#define ADDR_TO_MAPBASE(kaddr)  NODE_MEM_MAP(KVADDR_TO_NID(kaddr))
-
-/*
- * Given a page frame number, find the owning node of the memory
- * and return the mem_map of that node.
- */
-#define PFN_TO_MAPBASE(pfn)     NODE_MEM_MAP(PFN_TO_NID(pfn))
-
-/*
- *  Given a kaddr, LOCAL_MEM_MAP finds the owning node of the memory
- *  and returns the index corresponding to the appropriate page in the
- *  node's mem_map.
- */
-#define LOCAL_MAP_NR(addr) \
-        (((unsigned long)(addr) & (NODE_MAX_MEM_SIZE - 1)) >> PAGE_SHIFT)
-
-#define NODE_MAX_MEM_SHIFT	26
-#define NODE_MAX_MEM_SIZE	(1 << NODE_MAX_MEM_SHIFT)
-
-#endif /* CONFIG_DISCONTIGMEM */
+#define NODE_MEM_SIZE_BITS	26
 
 #endif /* __ASM_ARCH_MEMORY_H */
diff --git a/include/asm-arm/arch-clps711x/memory.h b/include/asm-arm/arch-clps711x/memory.h
index c6e8dcf..42768cc 100644
--- a/include/asm-arm/arch-clps711x/memory.h
+++ b/include/asm-arm/arch-clps711x/memory.h
@@ -62,7 +62,15 @@
  * memory bank.  For those systems, simply undefine CONFIG_DISCONTIGMEM.
  */
 
-#ifdef CONFIG_DISCONTIGMEM
+/*
+ * The PS7211 allows up to 256MB max per DRAM bank, but the EDB7211
+ * uses only one of the two banks (bank #1).  However, even within
+ * bank #1, memory is discontiguous.
+ *
+ * The EDB7211 has two 8MB DRAM areas with 8MB of empty space between
+ * them, so we use 24 for the node max shift to get 16MB node sizes.
+ */
+
 /*
  * Because of the wide memory address space between physical RAM banks on the 
  * SA1100, it's much more convenient to use Linux's NUMA support to implement
@@ -80,48 +88,7 @@
  * 	node 2:  0xd0000000 - 0xd7ffffff
  * 	node 3:  0xd8000000 - 0xdfffffff
  */
-
-/*
- * Given a kernel address, find the home node of the underlying memory.
- */
-#define KVADDR_TO_NID(addr) \
-		(((unsigned long)(addr) - PAGE_OFFSET) >> NODE_MAX_MEM_SHIFT)
-
-/*
- * Given a page frame number, convert it to a node id.
- */
-#define PFN_TO_NID(pfn) \
-	(((pfn) - PHYS_PFN_OFFSET) >> (NODE_MAX_MEM_SHIFT - PAGE_SHIFT))
-
-/*
- * Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory
- * and returns the mem_map of that node.
- */
-#define ADDR_TO_MAPBASE(kaddr) \
-			NODE_MEM_MAP(KVADDR_TO_NID((unsigned long)(kaddr)))
-
-#define PFN_TO_MAPBASE(pfn)	NODE_MEM_MAP(PFN_TO_NID(pfn))
-
-/*
- * Given a kaddr, LOCAL_MAR_NR finds the owning node of the memory
- * and returns the index corresponding to the appropriate page in the
- * node's mem_map.
- */
-#define LOCAL_MAP_NR(addr) \
-	(((unsigned long)(addr) & (NODE_MAX_MEM_SIZE - 1)) >> PAGE_SHIFT)
-
-/*
- * The PS7211 allows up to 256MB max per DRAM bank, but the EDB7211
- * uses only one of the two banks (bank #1).  However, even within
- * bank #1, memory is discontiguous.
- *
- * The EDB7211 has two 8MB DRAM areas with 8MB of empty space between
- * them, so we use 24 for the node max shift to get 16MB node sizes.
- */
-#define NODE_MAX_MEM_SHIFT	24
-#define NODE_MAX_MEM_SIZE	(1<<NODE_MAX_MEM_SHIFT)
-
-#endif /* CONFIG_DISCONTIGMEM */
+#define NODE_MEM_SIZE_BITS	24
 
 #endif
 
diff --git a/include/asm-arm/arch-lh7a40x/memory.h b/include/asm-arm/arch-lh7a40x/memory.h
index 9f1a58c..9b0c801 100644
--- a/include/asm-arm/arch-lh7a40x/memory.h
+++ b/include/asm-arm/arch-lh7a40x/memory.h
@@ -58,18 +58,6 @@
 #endif
 
 /*
- * Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory
- * and return the mem_map of that node.
- */
-# define ADDR_TO_MAPBASE(kaddr)	NODE_MEM_MAP(KVADDR_TO_NID(kaddr))
-
-/*
- * Given a page frame number, find the owning node of the memory
- * and return the mem_map of that node.
- */
-# define PFN_TO_MAPBASE(pfn)	NODE_MEM_MAP(PFN_TO_NID(pfn))
-
-/*
  * Given a kaddr, LOCAL_MEM_MAP finds the owning node of the memory
  * and returns the index corresponding to the appropriate page in the
  * node's mem_map.
diff --git a/include/asm-arm/arch-pxa/memory.h b/include/asm-arm/arch-pxa/memory.h
index eaf6d43..e17f988 100644
--- a/include/asm-arm/arch-pxa/memory.h
+++ b/include/asm-arm/arch-pxa/memory.h
@@ -27,7 +27,6 @@
 #define __virt_to_bus(x)	 __virt_to_phys(x)
 #define __bus_to_virt(x)	 __phys_to_virt(x)
 
-#ifdef CONFIG_DISCONTIGMEM
 /*
  * The nodes are matched with the physical SDRAM banks as follows:
  *
@@ -35,38 +34,9 @@
  * 	node 1:  0xa4000000-0xa7ffffff	-->  0xc4000000-0xc7ffffff
  * 	node 2:  0xa8000000-0xabffffff	-->  0xc8000000-0xcbffffff
  * 	node 3:  0xac000000-0xafffffff	-->  0xcc000000-0xcfffffff
+ *
+ * This needs a node mem size of 26 bits.
  */
-
-/*
- * Given a kernel address, find the home node of the underlying memory.
- */
-#define KVADDR_TO_NID(addr) (((unsigned long)(addr) - PAGE_OFFSET) >> 26)
-
-/*
- * Given a page frame number, convert it to a node id.
- */
-#define PFN_TO_NID(pfn)		(((pfn) - PHYS_PFN_OFFSET) >> (26 - PAGE_SHIFT))
-
-/*
- * Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory
- * and returns the mem_map of that node.
- */
-#define ADDR_TO_MAPBASE(kaddr)	NODE_MEM_MAP(KVADDR_TO_NID(kaddr))
-
-/*
- * Given a page frame number, find the owning node of the memory
- * and returns the mem_map of that node.
- */
-#define PFN_TO_MAPBASE(pfn)	NODE_MEM_MAP(PFN_TO_NID(pfn))
-
-/*
- * Given a kaddr, LOCAL_MEM_MAP finds the owning node of the memory
- * and returns the index corresponding to the appropriate page in the
- * node's mem_map.
- */
-#define LOCAL_MAP_NR(addr) \
-	(((unsigned long)(addr) & 0x03ffffff) >> PAGE_SHIFT)
-
-#endif
+#define NODE_MEM_SIZE_BITS	26
 
 #endif
diff --git a/include/asm-arm/arch-sa1100/memory.h b/include/asm-arm/arch-sa1100/memory.h
index 1ff172d..0e907fc 100644
--- a/include/asm-arm/arch-sa1100/memory.h
+++ b/include/asm-arm/arch-sa1100/memory.h
@@ -39,7 +39,6 @@
 #define __virt_to_bus(x)	 __virt_to_phys(x)
 #define __bus_to_virt(x)	 __phys_to_virt(x)
 
-#ifdef CONFIG_DISCONTIGMEM
 /*
  * Because of the wide memory address space between physical RAM banks on the 
  * SA1100, it's much convenient to use Linux's NUMA support to implement our 
@@ -57,38 +56,7 @@
  * 	node 2:  0xd0000000 - 0xd7ffffff
  * 	node 3:  0xd8000000 - 0xdfffffff
  */
-
-/*
- * Given a kernel address, find the home node of the underlying memory.
- */
-#define KVADDR_TO_NID(addr) (((unsigned long)(addr) - PAGE_OFFSET) >> 27)
-
-/*
- * Given a page frame number, convert it to a node id.
- */
-#define PFN_TO_NID(pfn)		(((pfn) - PHYS_PFN_OFFSET) >> (27 - PAGE_SHIFT))
-
-/*
- * Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory
- * and return the mem_map of that node.
- */
-#define ADDR_TO_MAPBASE(kaddr)	NODE_MEM_MAP(KVADDR_TO_NID(kaddr))
-
-/*
- * Given a page frame number, find the owning node of the memory
- * and return the mem_map of that node.
- */
-#define PFN_TO_MAPBASE(pfn)	NODE_MEM_MAP(PFN_TO_NID(pfn))
-
-/*
- * Given a kaddr, LOCAL_MEM_MAP finds the owning node of the memory
- * and returns the index corresponding to the appropriate page in the
- * node's mem_map.
- */
-#define LOCAL_MAP_NR(addr) \
-	(((unsigned long)(addr) & 0x07ffffff) >> PAGE_SHIFT)
-
-#endif
+#define NODE_MEM_SIZE_BITS	27
 
 /*
  * Cache flushing area - SA1100 zero bank
diff --git a/include/asm-arm/memory.h b/include/asm-arm/memory.h
index 91d536c..d9bfb39 100644
--- a/include/asm-arm/memory.h
+++ b/include/asm-arm/memory.h
@@ -215,6 +215,7 @@
  *  virt_addr_valid(k)	indicates whether a virtual address is valid
  */
 #ifndef CONFIG_DISCONTIGMEM
+
 #define ARCH_PFN_OFFSET		PHYS_PFN_OFFSET
 #define pfn_valid(pfn)		((pfn) >= PHYS_PFN_OFFSET && (pfn) < (PHYS_PFN_OFFSET + max_mapnr))
 
@@ -230,6 +231,7 @@
  * around in memory.
  */
 #include <linux/numa.h>
+
 #define arch_pfn_to_nid(pfn)	PFN_TO_NID(pfn)
 #define arch_local_page_offset(pfn, nid) LOCAL_MAP_NR((pfn) << PAGE_SHIFT)
 
@@ -256,6 +258,43 @@
  */
 #define PHYS_TO_NID(addr)	PFN_TO_NID((addr) >> PAGE_SHIFT)
 
+/*
+ * Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory
+ * and returns the mem_map of that node.
+ */
+#define ADDR_TO_MAPBASE(kaddr)	NODE_MEM_MAP(KVADDR_TO_NID(kaddr))
+
+/*
+ * Given a page frame number, find the owning node of the memory
+ * and returns the mem_map of that node.
+ */
+#define PFN_TO_MAPBASE(pfn)	NODE_MEM_MAP(PFN_TO_NID(pfn))
+
+#ifdef NODE_MEM_SIZE_BITS
+#define NODE_MEM_SIZE_MASK	((1 << NODE_MEM_SIZE_BITS) - 1)
+
+/*
+ * Given a kernel address, find the home node of the underlying memory.
+ */
+#define KVADDR_TO_NID(addr) \
+	(((unsigned long)(addr) - PAGE_OFFSET) >> NODE_MEM_SIZE_BITS)
+
+/*
+ * Given a page frame number, convert it to a node id.
+ */
+#define PFN_TO_NID(pfn) \
+	(((pfn) - PHYS_PFN_OFFSET) >> (NODE_MEM_SIZE_BITS - PAGE_SHIFT))
+
+/*
+ * Given a kaddr, LOCAL_MEM_MAP finds the owning node of the memory
+ * and returns the index corresponding to the appropriate page in the
+ * node's mem_map.
+ */
+#define LOCAL_MAP_NR(addr) \
+	(((unsigned long)(addr) & NODE_MEM_SIZE_MASK) >> PAGE_SHIFT)
+
+#endif /* NODE_MEM_SIZE_BITS */
+
 #endif /* !CONFIG_DISCONTIGMEM */
 
 /*