+#define pfn_valid(pfn) \
+({ \
+ unsigned long __pfn = (pfn); \
+ int __n = pfn_to_nid(__pfn); \
+ ((__n >= 0) ? (__pfn < NODE_DATA(__n)->node_start_pfn + \
+ NODE_DATA(__n)->node_spanned_pages) : 0);\
+})
+
+/* XXX: FIXME -- wli */
+#define kern_addr_valid(addr) (0)
+