xref: /freebsd/share/man/man9/pmap_mincore.9 (revision b3e7694832e81d7a904a10f525f8797b753bf0d3)
1.\"
2.\" Copyright (c) 2003 Bruce M Simpson <bms@spc.org>
3.\" All rights reserved.
4.\"
5.\" Redistribution and use in source and binary forms, with or without
6.\" modification, are permitted provided that the following conditions
7.\" are met:
8.\" 1. Redistributions of source code must retain the above copyright
9.\"    notice, this list of conditions and the following disclaimer.
10.\" 2. Redistributions in binary form must reproduce the above copyright
11.\"    notice, this list of conditions and the following disclaimer in the
12.\"    documentation and/or other materials provided with the distribution.
13.\"
14.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24.\" SUCH DAMAGE.
25.\"
26.\" $FreeBSD$
27.\"
28.Dd July 21, 2003
29.Dt PMAP_MINCORE 9
30.Os
31.Sh NAME
32.Nm pmap_mincore
33.Nd determine if a virtual address is resident in physical memory
34.Sh SYNOPSIS
35.In sys/param.h
36.In vm/vm.h
37.In vm/pmap.h
38.Ft int
39.Fn pmap_mincore "pmap_t pmap" "vm_offset_t addr"
40.Sh DESCRIPTION
41The
42.Fn pmap_mincore
43function determines if the page at the virtual address
44.Fa addr
45in the physical map
46.Fa pmap
47is resident in physical memory.
48It is the machine-dependent interface used by the
49.Xr mincore 2
50system call.
51.Sh RETURN VALUES
52If the page is resident in physical memory,
53a mask of flags is returned,
54whose meaning is documented in
55.Xr mincore 2 ;
56otherwise,
570
58is returned.
59.Pp
60The
61.Fa pmap
62must exist and
63.Fa addr
64must be mapped into the
65.Fa pmap .
66If any error occurs, the machine-dependent implementation should
67return
680.
69.Sh SEE ALSO
70.Xr mincore 2 ,
71.Xr pmap 9
72.Sh AUTHORS
73This manual page was written by
74.An Bruce M Simpson Aq Mt bms@spc.org .
75