Fix AMD64 build.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@3953 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/include/vki-amd64-linux.h b/include/vki-amd64-linux.h
index 6475a16..badff2a 100644
--- a/include/vki-amd64-linux.h
+++ b/include/vki-amd64-linux.h
@@ -220,6 +220,7 @@
 #define VKI_MAP_PRIVATE	0x02		/* Changes are private */
 #define VKI_MAP_FIXED	0x10		/* Interpret addr exactly */
 #define VKI_MAP_ANONYMOUS	0x20	/* don't use a file */
+#define VKI_MAP_NORESERVE       0x4000  /* don't check for reservations */
 
 //----------------------------------------------------------------------
 // From linux-2.6.9/include/asm-x86_64/fcntl.h