Index: sys/sparc64/include/pmap.h
===================================================================
--- sys/sparc64/include/pmap.h
+++ sys/sparc64/include/pmap.h
@@ -50,6 +50,7 @@
 #include <machine/tte.h>
 
 #define	PMAP_CONTEXT_MAX	8192
+#define	PMAP_ENTER_QUICK_LOCKED	0x10000000
 
 typedef	struct pmap *pmap_t;
 
Index: sys/sparc64/sparc64/pmap.c
===================================================================
--- sys/sparc64/sparc64/pmap.c
+++ sys/sparc64/sparc64/pmap.c
@@ -1500,8 +1500,12 @@
 
 	rw_assert(&tte_list_global_lock, RA_WLOCKED);
 	PMAP_LOCK_ASSERT(pm, MA_OWNED);
-	if ((m->oflags & VPO_UNMANAGED) == 0)
-		VM_PAGE_OBJECT_BUSY_ASSERT(m);
+	if ((m->oflags & VPO_UNMANAGED) == 0) {
+		if ((flags & PMAP_ENTER_QUICK_LOCKED) == 0)
+			VM_PAGE_OBJECT_BUSY_ASSERT(m);
+		else
+			VM_OBJECT_ASSERT_LOCKED(m->object);
+	}
 	PMAP_STATS_INC(pmap_nenter);
 	pa = VM_PAGE_TO_PHYS(m);
 	wired = (flags & PMAP_ENTER_WIRED) != 0;
@@ -1649,7 +1653,8 @@
 	PMAP_LOCK(pm);
 	while (m != NULL && (diff = m->pindex - m_start->pindex) < psize) {
 		pmap_enter_locked(pm, start + ptoa(diff), m, prot &
-		    (VM_PROT_READ | VM_PROT_EXECUTE), 0, 0);
+		    (VM_PROT_READ | VM_PROT_EXECUTE),
+		    PMAP_ENTER_QUICK_LOCKED, 0);
 		m = TAILQ_NEXT(m, listq);
 	}
 	rw_wunlock(&tte_list_global_lock);
@@ -1663,7 +1668,7 @@
 	rw_wlock(&tte_list_global_lock);
 	PMAP_LOCK(pm);
 	pmap_enter_locked(pm, va, m, prot & (VM_PROT_READ | VM_PROT_EXECUTE),
-	    0, 0);
+	    PMAP_ENTER_QUICK_LOCKED, 0);
 	rw_wunlock(&tte_list_global_lock);
 	PMAP_UNLOCK(pm);
 }