diff --git a/arch/ia64/mm/numa.c b/arch/ia64/mm/numa.c
index def782e..4248492 100644
--- a/arch/ia64/mm/numa.c
+++ b/arch/ia64/mm/numa.c
@@ -61,13 +61,26 @@
 int __meminit __early_pfn_to_nid(unsigned long pfn)
 {
 	int i, section = pfn >> PFN_SECTION_SHIFT, ssec, esec;
+	/*
+	 * NOTE: The following SMP-unsafe globals are only used early in boot
+	 * when the kernel is running single-threaded.
+	 */
+	static int __meminitdata last_ssec, last_esec;
+	static int __meminitdata last_nid;
+
+	if (section >= last_ssec && section < last_esec)
+		return last_nid;
 
 	for (i = 0; i < num_node_memblks; i++) {
 		ssec = node_memblk[i].start_paddr >> PA_SECTION_SHIFT;
 		esec = (node_memblk[i].start_paddr + node_memblk[i].size +
 			((1L << PA_SECTION_SHIFT) - 1)) >> PA_SECTION_SHIFT;
-		if (section >= ssec && section < esec)
+		if (section >= ssec && section < esec) {
+			last_ssec = ssec;
+			last_esec = esec;
+			last_nid = node_memblk[i].nid;
 			return node_memblk[i].nid;
+		}
 	}
 
 	return -1;
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index b54c5cb..5a234b6 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -4187,10 +4187,23 @@
 {
 	unsigned long start_pfn, end_pfn;
 	int i, nid;
+	/*
+	 * NOTE: The following SMP-unsafe globals are only used early in boot
+	 * when the kernel is running single-threaded.
+	 */
+	static unsigned long __meminitdata last_start_pfn, last_end_pfn;
+	static int __meminitdata last_nid;
+
+	if (last_start_pfn <= pfn && pfn < last_end_pfn)
+		return last_nid;
 
 	for_each_mem_pfn_range(i, MAX_NUMNODES, &start_pfn, &end_pfn, &nid)
-		if (start_pfn <= pfn && pfn < end_pfn)
+		if (start_pfn <= pfn && pfn < end_pfn) {
+			last_start_pfn = start_pfn;
+			last_end_pfn = end_pfn;
+			last_nid = nid;
 			return nid;
+		}
 	/* This is a memory hole */
 	return -1;
 }