diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index a78ffef62a2bf2f67e5a512e0a847289d75f726f..9dd3cb905971a103498f7c7381bd811abf767e5c 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -51,6 +51,7 @@ static inline int phys_addr_valid(unsigned long addr)
 	return 1;
 }
 
+#ifdef CONFIG_DEBUG_VIRTUAL
 unsigned long __phys_addr(unsigned long x)
 {
 	/* VMALLOC_* aren't constants; not available at the boot time */
@@ -59,6 +60,7 @@ unsigned long __phys_addr(unsigned long x)
 	return x - PAGE_OFFSET;
 }
 EXPORT_SYMBOL(__phys_addr);
+#endif
 
 #endif
 
diff --git a/include/asm-x86/mmzone_64.h b/include/asm-x86/mmzone_64.h
index facde3e5314f23bf4e101e93344bf83898f46f29..5e3a6cbddb49700345fb89fc8a8c6ff350693285 100644
--- a/include/asm-x86/mmzone_64.h
+++ b/include/asm-x86/mmzone_64.h
@@ -29,7 +29,6 @@ static inline __attribute__((pure)) int phys_to_nid(unsigned long addr)
 {
 	unsigned nid;
 	VIRTUAL_BUG_ON(!memnodemap);
-	VIRTUAL_BUG_ON((addr >> memnode_shift) >= memnodemapsize);
 	nid = memnodemap[addr >> memnode_shift];
 	VIRTUAL_BUG_ON(nid >= MAX_NUMNODES || !node_data[nid]);
 	return nid;
diff --git a/include/asm-x86/page_32.h b/include/asm-x86/page_32.h
index 9159bfb9dcf9194000470995354d48ef4b2acec2..71a2e424e5849d0ed96ea2e9d025ed76538899ad 100644
--- a/include/asm-x86/page_32.h
+++ b/include/asm-x86/page_32.h
@@ -65,7 +65,11 @@ typedef struct page *pgtable_t;
 
 #ifndef __ASSEMBLY__
 #define __phys_addr_const(x)	((x) - PAGE_OFFSET)
+#ifdef CONFIG_DEBUG_VIRTUAL
 extern unsigned long __phys_addr(unsigned long);
+#else
+#define __phys_addr(x)		((x) - PAGE_OFFSET)
+#endif
 #define __phys_reloc_hide(x)	RELOC_HIDE((x), 0)
 
 #ifdef CONFIG_FLATMEM