+extern struct pte msgbufmap[];
+extern struct pte kmempt[], ekmempt[];
+extern struct pte Nexmap[][16];
+#if VAX8600
+extern struct pte Ioamap[][1];
+#endif
+#ifdef NFS
+extern struct pte Nfsiomap[];
+#endif
+#ifdef MFS
+extern struct pte Mfsiomap[];