2003-09-25 19:14:40 +00:00
|
|
|
.\"
|
|
|
|
|
.\" Copyright (c) 2003 Bruce M Simpson <bms@spc.org>
|
|
|
|
|
.\" All rights reserved.
|
|
|
|
|
.\"
|
|
|
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
|
|
|
.\" modification, are permitted provided that the following conditions
|
|
|
|
|
.\" are met:
|
|
|
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
|
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
|
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
|
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
|
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
|
|
|
.\"
|
|
|
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
|
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
|
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
|
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
|
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
|
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
|
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
|
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
|
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
|
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
|
|
|
.\" SUCH DAMAGE.
|
|
|
|
|
.\"
|
|
|
|
|
.\" $FreeBSD$
|
|
|
|
|
.\"
|
|
|
|
|
.Dd July 21, 2003
|
|
|
|
|
.Dt PMAP_REMOVE 9
|
2004-07-06 07:02:31 +00:00
|
|
|
.Os
|
2003-09-25 19:14:40 +00:00
|
|
|
.Sh NAME
|
|
|
|
|
.Nm pmap_remove ,
|
|
|
|
|
.Nm pmap_remove_all ,
|
|
|
|
|
.Nm pmap_remove_pages
|
|
|
|
|
.Nd remove pages from a physical map
|
|
|
|
|
.Sh SYNOPSIS
|
|
|
|
|
.In sys/param.h
|
|
|
|
|
.In vm/vm.h
|
|
|
|
|
.In vm/pmap.h
|
|
|
|
|
.Ft void
|
|
|
|
|
.Fn pmap_remove "pmap_t pmap" "vm_offset_t sva" "vm_offset_t eva"
|
|
|
|
|
.Ft void
|
|
|
|
|
.Fn pmap_remove_all "vm_page_t m"
|
|
|
|
|
.Ft void
|
|
|
|
|
.Fn pmap_remove_pages "pmap_t pmap" "vm_offset_t sva" "vm_offset_t eva"
|
|
|
|
|
.Sh DESCRIPTION
|
|
|
|
|
The
|
|
|
|
|
.Fn pmap_remove
|
|
|
|
|
function removes the range of addresses between
|
|
|
|
|
.Fa sva
|
|
|
|
|
and
|
|
|
|
|
.Fa eva
|
|
|
|
|
from the physical map
|
|
|
|
|
.Fa pmap .
|
|
|
|
|
If
|
|
|
|
|
.Fa eva
|
|
|
|
|
is less than
|
|
|
|
|
.Fa sva ,
|
|
|
|
|
then the result is undefined.
|
|
|
|
|
It is assumed that both
|
|
|
|
|
.Fa sva
|
|
|
|
|
and
|
|
|
|
|
.Fa eva
|
|
|
|
|
are page-aligned addresses.
|
|
|
|
|
.Pp
|
|
|
|
|
The
|
|
|
|
|
.Fn pmap_remove_all
|
|
|
|
|
removes the physical page
|
|
|
|
|
.Fa m
|
|
|
|
|
from all physical maps in which it resides, and reflects back the modify
|
|
|
|
|
bits to the appropriate pager.
|
|
|
|
|
.Pp
|
|
|
|
|
The
|
|
|
|
|
.Fn pmap_remove_pages
|
|
|
|
|
function removes all pages from the physical map
|
|
|
|
|
.Fa pmap ,
|
|
|
|
|
within the range of physical addresses bounded by
|
|
|
|
|
.Fa sva
|
|
|
|
|
and
|
|
|
|
|
.Fa eva .
|
|
|
|
|
This function is called when a process exits to run down its address space
|
|
|
|
|
more quickly than would be the case for calling
|
|
|
|
|
.Fn pmap_remove .
|
|
|
|
|
.Sh SEE ALSO
|
|
|
|
|
.Fn pmap 9
|
|
|
|
|
.Sh AUTHORS
|
|
|
|
|
This manual page was written by
|
|
|
|
|
.An Bruce M Simpson Aq bms@spc.org .
|
