From 3bd3f63d50f8b76eb13805bf8fb2afe28032db8a Mon Sep 17 00:00:00 2001
From: Alan Cox <alc@FreeBSD.org>
Date: Sun, 14 Oct 2012 03:40:08 +0000
Subject: [PATCH] Correct an error in pmap_pv_reclaim().  It can legitimately
 encounter wired mappings.  If it does, it should just skip them.

---
 sys/mips/mips/pmap.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sys/mips/mips/pmap.c b/sys/mips/mips/pmap.c
index 829be70262f..c54bbaa79fb 100644
--- a/sys/mips/mips/pmap.c
+++ b/sys/mips/mips/pmap.c
@@ -1434,8 +1434,8 @@ pmap_pv_reclaim(pmap_t locked_pmap)
 				    ("pmap_pv_reclaim: pde"));
 				pte = pmap_pde_to_pte(pde, va);
 				oldpte = *pte;
-				KASSERT(!pte_test(&oldpte, PTE_W),
-				    ("wired pte for unwired page"));
+				if (pte_test(&oldpte, PTE_W))
+					continue;
 				if (is_kernel_pmap(pmap))
 					*pte = PTE_G;
 				else