2 .\" Copyright (c) 2003 Bruce M Simpson <bms@spc.org>
3 .\" All rights reserved.
5 .\" Redistribution and use in source and binary forms, with or without
6 .\" modification, are permitted provided that the following conditions
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.
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
32 .Nd machine-dependent portion of virtual memory subsystem
40 module is the machine-dependent portion of the
42 VM (Virtual Memory) sub-system.
43 Each function documented herein must have its own
44 architecture-dependent implementation.
49 is responsible for managing hardware-dependent objects such as page tables,
50 address maps, TLBs, etc.
52 Machine-dependent code must provide the header file
53 .Em <machine/pmap.h> .
54 This file contains the definition of the
57 .Bd -literal -offset indent
59 /* Contents defined by pmap implementation. */
61 typedef struct pmap *pmap_t;
64 This header file may also define other data structures used by the
70 defines a structure for tracking
72 statistics (see below).
73 This structure is defined as:
74 .Bd -literal -offset indent
75 struct pmap_statistics {
76 long resident_count; /* number of mapped pages */
77 long wired_count; /* number of wired pages */
83 must contain an instance of this structure having the name
85 and it must be updated by the implementation after each relevant
91 .Xr pmap_addr_hint 9 ,
92 .Xr pmap_change_wiring 9 ,
93 .Xr pmap_clear_modify 9 ,
94 .Xr pmap_clear_reference 9 ,
96 .Xr pmap_copy_page 9 ,
99 .Xr pmap_extract_and_hold 9 ,
100 .Xr pmap_growkernel 9 ,
103 .Xr pmap_is_modified 9 ,
104 .Xr pmap_is_prefaultable 9 ,
107 .Xr pmap_object_init_pt 9 ,
108 .Xr pmap_page_exists_quick 9 ,
109 .Xr pmap_page_protect 9 ,
118 .Xr pmap_remove_all 9 ,
119 .Xr pmap_remove_pages 9 ,
120 .Xr pmap_resident_count 9 ,
121 .Xr pmap_ts_modified 9 ,
122 .Xr pmap_wired_count 9 ,
123 .Xr pmap_zero_area 9 ,
124 .Xr pmap_zero_idle 9 ,
125 .Xr pmap_zero_page 9 ,
128 This manual page was written by
129 .An Bruce M Simpson Aq bms@spc.org .