From 0f7acf64918a5a3c1315a3006056d90c8859c32e Mon Sep 17 00:00:00 2001
From: alc <alc@FreeBSD.org>
Date: Thu, 22 Jul 2004 02:05:46 +0000
Subject: 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(-)

(limited to 'sys/ia64')

diff --git a/sys/ia64/ia64/pmap.c b/sys/ia64/ia64/pmap.c
index a6e227a..e26bdc5 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);
 
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