From e4242deba71689edc329bb4791e04073f0fdf60b Mon Sep 17 00:00:00 2001
From: Alan Cox <alc@FreeBSD.org>
Date: Thu, 22 Jul 2004 02:05:46 +0000
Subject: [PATCH] In pmap_mincore() create a private copy of the pte for use
 after the pmap lock is released.

---
 sys/ia64/ia64/pmap.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/sys/ia64/ia64/pmap.c b/sys/ia64/ia64/pmap.c
index a6e227a7ebe..e26bdc5afcd 100644
--- a/sys/ia64/ia64/pmap.c
+++ b/sys/ia64/ia64/pmap.c
@@ -2188,12 +2188,16 @@ int
 pmap_mincore(pmap_t pmap, vm_offset_t addr)
 {
 	pmap_t oldpmap;
-	struct ia64_lpte *pte;
+	struct ia64_lpte *pte, tpte;
 	int val = 0;
 	
 	PMAP_LOCK(pmap);
 	oldpmap = pmap_install(pmap);
 	pte = pmap_find_vhpt(addr);
+	if (pte != NULL) {
+		tpte = *pte;
+		pte = &tpte;
+	}
 	pmap_install(oldpmap);
 	PMAP_UNLOCK(pmap);