From a6359b2633446cd962e7b779ce943ec4cdb85b3f Mon Sep 17 00:00:00 2001
From: thorpej <thorpej@NetBSD.org>
Date: Thu, 5 Oct 1995 06:47:25 +0000
Subject: [PATCH] Fix segment table reference bug, from Micheal Hitch.

---
 sys/arch/hp300/hp300/pmap.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/sys/arch/hp300/hp300/pmap.c b/sys/arch/hp300/hp300/pmap.c
index 071f08df16fc..b593a0b14f16 100644
--- a/sys/arch/hp300/hp300/pmap.c
+++ b/sys/arch/hp300/hp300/pmap.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: pmap.c,v 1.20 1995/05/29 19:36:22 hpeyerl Exp $	*/
+/*	$NetBSD: pmap.c,v 1.21 1995/10/05 06:47:25 thorpej Exp $	*/
 
 /* 
  * Copyright (c) 1991, 1993
@@ -2509,6 +2509,11 @@ pmap_enter_ptpage(pmap, va)
 	 * letting the VM system allocate a zero-filled page.
 	 */
 	else {
+		/*
+		 * Count the segment table reference now so that we won't
+		 * lose the segment table when low on memory.
+		 */
+		pmap->pm_sref++;
 #ifdef DEBUG
 		if (pmapdebug & (PDB_ENTER|PDB_PTPAGE))
 			printf("enter: about to fault UPT pg at %x\n", va);
@@ -2593,7 +2598,6 @@ pmap_enter_ptpage(pmap, va)
 #endif
 	*ste = (ptpa & SG_FRAME) | SG_RW | SG_V;
 	if (pmap != pmap_kernel()) {
-		pmap->pm_sref++;
 #ifdef DEBUG
 		if (pmapdebug & (PDB_ENTER|PDB_PTPAGE|PDB_SEGTAB))
 			printf("enter: stab %x refcnt %d\n",