Migrate pmap_prefault() into the machine-independent virtual memory layer.

A small helper function pmap_is_prefaultable() is added.  This function
encapsulate the few lines of pmap_prefault() that actually vary from
machine to machine.  Note: pmap_is_prefaultable() and pmap_mincore() have
much in common.  Going forward, it's worth considering their merger.

1 files changed, 13 insertions, 6 deletions

diff --git a/sys/sparc64/sparc64/pmap.c b/sys/sparc64/sparc64/pmap.c
index a1cbf99..2d7ad37 100644
--- a/sys/sparc64/sparc64/pmap.c
+++ b/sys/sparc64/sparc64/pmap.c
@@ -1374,12 +1374,6 @@ pmap_object_init_pt(pmap_t pm, vm_offset_t addr, vm_object_t object,
 	    ("pmap_object_init_pt: non-device object"));
 }
 
-void
-pmap_prefault(pmap_t pm, vm_offset_t va, vm_map_entry_t entry)
-{
-	/* XXX */
-}
-
 /*
  * Change the wiring attribute for a map/virtual-address pair.
  * The mapping must already exist in the pmap.
@@ -1724,6 +1718,19 @@ pmap_is_modified(vm_page_t m)
 	return (FALSE);
 }
 
+/*
+ *	pmap_is_prefaultable:
+ *
+ *	Return whether or not the specified virtual address is elgible
+ *	for prefault.
+ */
+boolean_t
+pmap_is_prefaultable(pmap_t pmap, vm_offset_t addr)
+{
+
+	return (FALSE);
+}
+
 void
 pmap_clear_modify(vm_page_t m)
 {