diff -up kexec-tools-testing-20070330/makedumpfile/makedumpfile.c.orig kexec-tools-testing-20070330/makedumpfile/makedumpfile.c
--- kexec-tools-testing-20070330/makedumpfile/makedumpfile.c.orig	2008-02-27 11:48:34.000000000 -0500
+++ kexec-tools-testing-20070330/makedumpfile/makedumpfile.c	2008-02-27 12:24:53.000000000 -0500
@@ -5797,12 +5797,22 @@ handle_xen()
 	if (!create_dump_bitmap_xen())
 		goto out;
 
+	if (info->flag_flatten) {
+		if (!write_start_flat_header())
+			goto out;
+	}
+
 	if (!write_elf_header())
 		goto out;
 
 	if (!write_elf_pages())
 		goto out;
 
+	if (info->flag_flatten) {
+		if (!write_end_flat_header())
+			goto out;
+	}
+
 	if (!close_files_for_creating_dumpfile())
 		goto out;