svn commit: r215530 - stable/8/sys/sparc64/sparc64

[Marius Strobl]

Author: marius
Date: Fri Nov 19 17:04:55 2010
New Revision: 215530
URL: http://svn.freebsd.org/changeset/base/215530

Log:
  MFC: r214879
  
  Implement pmap_is_prefaultable().
  
  Reviewed by:	alc (with bugfix)

Modified:
  stable/8/sys/sparc64/sparc64/pmap.c
Directory Properties:
  stable/8/sys/   (props changed)
  stable/8/sys/amd64/include/xen/   (props changed)
  stable/8/sys/cddl/contrib/opensolaris/   (props changed)
  stable/8/sys/contrib/dev/acpica/   (props changed)
  stable/8/sys/contrib/pf/   (props changed)
  stable/8/sys/dev/xen/xenpci/   (props changed)

Modified: stable/8/sys/sparc64/sparc64/pmap.c
==============================================================================
--- stable/8/sys/sparc64/sparc64/pmap.c	Fri Nov 19 16:52:18 2010	(r215529)
+++ stable/8/sys/sparc64/sparc64/pmap.c	Fri Nov 19 17:04:55 2010	(r215530)
@@ -1928,8 +1928,12 @@ pmap_is_modified(vm_page_t m)
 boolean_t
 pmap_is_prefaultable(pmap_t pmap, vm_offset_t addr)
 {
+	boolean_t rv;
 
-	return (FALSE);
+	PMAP_LOCK(pmap);
+	rv = tsb_tte_lookup(pmap, addr) == NULL;
+	PMAP_UNLOCK(pmap);
+	return (rv);
 }
 
 void