From a8a74574b2e2ebfc5542f083310869539389cdb0 Mon Sep 17 00:00:00 2001
From: Peter Wemm <peter@FreeBSD.org>
Date: Sun, 27 Apr 1997 12:11:43 +0000
Subject: [PATCH] Whoops.. We forgot to turn off the 4MB Virtual==Physical
 mapping at address zero from bootstrap in the non-SMP case.

Noticed by: bde
---
 sys/amd64/amd64/pmap.c | 5 ++++-
 sys/i386/i386/pmap.c   | 5 ++++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/sys/amd64/amd64/pmap.c b/sys/amd64/amd64/pmap.c
index 3f218646416..97567750b90 100644
--- a/sys/amd64/amd64/pmap.c
+++ b/sys/amd64/amd64/pmap.c
@@ -39,7 +39,7 @@
  * SUCH DAMAGE.
  *
  *	from:	@(#)pmap.c	7.7 (Berkeley)	5/12/91
- *	$Id: pmap.c,v 1.141 1997/04/13 03:35:30 dyson Exp $
+ *	$Id: pmap.c,v 1.142 1997/04/26 11:45:19 peter Exp $
  */
 
 /*
@@ -352,6 +352,9 @@ pmap_bootstrap(firstaddr, loadaddr)
 	virtual_avail = va;
 
 	*(int *) CMAP1 = *(int *) CMAP2 = 0;
+#if !defined(SMP)
+	*(int *) PTD = 0;
+#endif
 
 	invltlb();
 
diff --git a/sys/i386/i386/pmap.c b/sys/i386/i386/pmap.c
index 3f218646416..97567750b90 100644
--- a/sys/i386/i386/pmap.c
+++ b/sys/i386/i386/pmap.c
@@ -39,7 +39,7 @@
  * SUCH DAMAGE.
  *
  *	from:	@(#)pmap.c	7.7 (Berkeley)	5/12/91
- *	$Id: pmap.c,v 1.141 1997/04/13 03:35:30 dyson Exp $
+ *	$Id: pmap.c,v 1.142 1997/04/26 11:45:19 peter Exp $
  */
 
 /*
@@ -352,6 +352,9 @@ pmap_bootstrap(firstaddr, loadaddr)
 	virtual_avail = va;
 
 	*(int *) CMAP1 = *(int *) CMAP2 = 0;
+#if !defined(SMP)
+	*(int *) PTD = 0;
+#endif
 
 	invltlb();