--- linux-2.6.28/arch/powerpc/mm/numa.c.orig	2009-01-08 03:20:41.000000000 -0600
+++ linux-2.6.28/arch/powerpc/mm/numa.c	2009-01-08 03:50:41.000000000 -0600
@@ -16,6 +16,7 @@
 #include <linux/module.h>
 #include <linux/nodemask.h>
 #include <linux/cpu.h>
+#include <linux/pfn.h>
 #include <linux/notifier.h>
 #include <linux/lmb.h>
 #include <linux/of.h>
@@ -898,9 +899,17 @@ static void mark_reserved_regions_for_ni
 			 * if reserved region extends past active region
 			 * then trim size to active region
 			 */
-			if (end_pfn > node_ar.end_pfn)
+			if (end_pfn > node_ar.end_pfn) {
 				reserve_size = (node_ar.end_pfn << PAGE_SHIFT)
 					- (start_pfn << PAGE_SHIFT);
+				/*
+				 * resize it further if the reservation could
+				 * cross the last page in this node
+				 */
+				if (PFN_UP(physbase+reserve_size) >
+						 node_end_pfn)
+					reserve_size -= PAGE_SIZE;
+			}
 			/*
 			 * Only worry about *this* node, others may not
 			 * yet have valid NODE_DATA().