pmap_change_wiring(9)

NAME

pmap_change_wiring - change physical wiring for a map or

virtual address
pair

SYNOPSIS

#include <sys/param.h>
#include <vm/vm.h>
#include <vm/pmap.h>
void
pmap_change_wiring(pmap_t  pmap,  vm_offset_t  va, boolean_t
wired);

DESCRIPTION

The pmap_change_wiring() function changes the wiring at

tribute for the
page at virtual address va in the physical map pmap. A

wired page gets
its name from being ``wired'' into the system page tables so

that it will
not be paged out.

The mapping must already exist in the pmap. If wired is

TRUE, the map's
wired page count will be incremented; if FALSE, it will be

decremented.

It is typically called by the vm_fault_unwire() function.

SEE ALSO

pmap(9)

AUTHORS

This manual page was written by Bruce M Simpson

<bms@spc.org>.

BSD July 21, 2003

BSD