diff -r f071be18e85f linux-2.6-xen-sparse/drivers/xen/balloon/balloon.c
--- a/linux-2.6-xen-sparse/drivers/xen/balloon/balloon.c	Fri Oct  6 16:51:10 2006 +0100
+++ b/linux-2.6-xen-sparse/drivers/xen/balloon/balloon.c	Sun Oct  8 04:57:23 2006 +0200
@@ -462,6 +462,7 @@ static int __init balloon_init(void)
 {
 	unsigned long pfn;
 	struct page *page;
+	unsigned long page_start;
 
 	if (!is_running_on_xen())
 		return -ENODEV;
@@ -489,9 +490,12 @@ static int __init balloon_init(void)
 	balloon_pde->read_proc  = balloon_read;
 	balloon_pde->write_proc = balloon_write;
 #endif
-    
+	page_start = xen_start_info->nr_pages;
+	if (xen_feature(XENFEAT_auto_translated_physmap))
+		page_start += NR_GRANT_FRAMES;
+		
 	/* Initialise the balloon with excess memory space. */
-	for (pfn = xen_start_info->nr_pages; pfn < max_pfn; pfn++) {
+	for (pfn = page_start; pfn < max_pfn; pfn++) {
 		page = pfn_to_page(pfn);
 		if (!PageReserved(page))
 			balloon_append(page);