Index: sys/amd64/amd64/pmap.c
===================================================================
--- sys/amd64/amd64/pmap.c
+++ sys/amd64/amd64/pmap.c
@@ -1566,7 +1566,7 @@
 	/* Connect the Direct Map slot(s) up to the PML4. */
 	for (i = 0; i < ndmpdpphys; i++) {
 		p4_p[DMPML4I + i] = DMPDPphys + ptoa(i);
-		p4_p[DMPML4I + i] |= X86_PG_RW | X86_PG_V;
+		p4_p[DMPML4I + i] |= X86_PG_RW | X86_PG_V | pg_nx;
 	}
 
 	/* Connect the KVA slots up to the PML4 */