131 lines
3.6 KiB
Groff
131 lines
3.6 KiB
Groff
.\"
|
|
.\" 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 9
|
|
.Os
|
|
.Sh NAME
|
|
.Nm pmap
|
|
.Nd machine-dependent portion of virtual memory subsystem
|
|
.Sh SYNOPSIS
|
|
.In sys/param.h
|
|
.In vm/vm.h
|
|
.In vm/pmap.h
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
module is the machine-dependent portion of the
|
|
.Fx
|
|
VM (Virtual Memory) sub-system.
|
|
Each function documented herein must have its own
|
|
architecture-dependent implementation.
|
|
.Pp
|
|
The
|
|
.Nm
|
|
module
|
|
is responsible for managing hardware-dependent objects such as page tables,
|
|
address maps, TLBs, etc.
|
|
.Pp
|
|
Machine-dependent code must provide the header file
|
|
.In machine/pmap.h .
|
|
This file contains the definition of the
|
|
.Vt pmap
|
|
structure:
|
|
.Bd -literal -offset indent
|
|
struct pmap {
|
|
/* Contents defined by pmap implementation. */
|
|
};
|
|
typedef struct pmap *pmap_t;
|
|
.Ed
|
|
.Pp
|
|
This header file may also define other data structures used by the
|
|
.Nm
|
|
implementation.
|
|
.Pp
|
|
The header file
|
|
.In vm/pmap.h
|
|
defines a structure for tracking
|
|
.Nm
|
|
statistics (see below).
|
|
This structure is defined as:
|
|
.Bd -literal -offset indent
|
|
struct pmap_statistics {
|
|
long resident_count; /* number of mapped pages */
|
|
long wired_count; /* number of wired pages */
|
|
};
|
|
.Ed
|
|
.Pp
|
|
The implementation's
|
|
.Vt "struct pmap"
|
|
must contain an instance of this structure having the name
|
|
.Va pm_stats ,
|
|
and it must be updated by the implementation after each relevant
|
|
.Nm
|
|
operation.
|
|
.Sh SEE ALSO
|
|
.Xr pmap 9 ,
|
|
.Xr pmap_activate 9 ,
|
|
.Xr pmap_change_wiring 9 ,
|
|
.Xr pmap_clear_modify 9 ,
|
|
.Xr pmap_clear_reference 9 ,
|
|
.Xr pmap_copy 9 ,
|
|
.Xr pmap_copy_page 9 ,
|
|
.Xr pmap_enter 9 ,
|
|
.Xr pmap_extract 9 ,
|
|
.Xr pmap_extract_and_hold 9 ,
|
|
.Xr pmap_growkernel 9 ,
|
|
.Xr pmap_init 9 ,
|
|
.Xr pmap_init2 9 ,
|
|
.Xr pmap_is_modified 9 ,
|
|
.Xr pmap_is_prefaultable 9 ,
|
|
.Xr pmap_map 9 ,
|
|
.Xr pmap_mincore 9 ,
|
|
.Xr pmap_object_init_pt 9 ,
|
|
.Xr pmap_page_exists_quick 9 ,
|
|
.Xr pmap_page_init 9 ,
|
|
.Xr pmap_page_protect 9 ,
|
|
.Xr pmap_pinit 9 ,
|
|
.Xr pmap_pinit0 9 ,
|
|
.Xr pmap_pinit2 9 ,
|
|
.Xr pmap_protect 9 ,
|
|
.Xr pmap_qenter 9 ,
|
|
.Xr pmap_qremove 9 ,
|
|
.Xr pmap_release 9 ,
|
|
.Xr pmap_remove 9 ,
|
|
.Xr pmap_remove_all 9 ,
|
|
.Xr pmap_remove_pages 9 ,
|
|
.Xr pmap_resident_count 9 ,
|
|
.Xr pmap_ts_modified 9 ,
|
|
.Xr pmap_wired_count 9 ,
|
|
.Xr pmap_zero_area 9 ,
|
|
.Xr pmap_zero_idle 9 ,
|
|
.Xr pmap_zero_page 9 ,
|
|
.Xr vm_map 9
|
|
.Sh AUTHORS
|
|
This manual page was written by
|
|
.An Bruce M Simpson Aq bms@spc.org .
|