diff --git a/include/asm-mips/mmzone.h b/include/asm-mips/mmzone.h
index dc231c8..f53ec54 100644
--- a/include/asm-mips/mmzone.h
+++ b/include/asm-mips/mmzone.h
@@ -10,7 +10,6 @@
 
 #ifdef CONFIG_DISCONTIGMEM
 
-#define kvaddr_to_nid(kvaddr)	pa_to_nid(__pa(kvaddr))
 #define pfn_to_nid(pfn)		pa_to_nid((pfn) << PAGE_SHIFT)
 
 #endif /* CONFIG_DISCONTIGMEM */
diff --git a/include/asm-parisc/mmzone.h b/include/asm-parisc/mmzone.h
index ceb9b73..c878136 100644
--- a/include/asm-parisc/mmzone.h
+++ b/include/asm-parisc/mmzone.h
@@ -14,11 +14,6 @@
 
 #define NODE_DATA(nid)          (&node_data[nid].pg_data)
 
-/*
- * Given a kernel address, find the home node of the underlying memory.
- */
-#define kvaddr_to_nid(kaddr)	pfn_to_nid(__pa(kaddr) >> PAGE_SHIFT)
-
 #define node_start_pfn(nid)	(NODE_DATA(nid)->node_start_pfn)
 #define node_end_pfn(nid)						\
 ({									\
diff --git a/include/asm-x86_64/mmzone.h b/include/asm-x86_64/mmzone.h
index 70bb996..c38ebdf 100644
--- a/include/asm-x86_64/mmzone.h
+++ b/include/asm-x86_64/mmzone.h
@@ -42,7 +42,6 @@
 
 #ifdef CONFIG_DISCONTIGMEM
 #define pfn_to_nid(pfn) phys_to_nid((unsigned long)(pfn) << PAGE_SHIFT)
-#define kvaddr_to_nid(kaddr)	phys_to_nid(__pa(kaddr))
 
 extern int pfn_valid(unsigned long pfn);
 #endif