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/share/man/man9/pmap_init.9

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 1.\"
 2.\" Copyright (c) 2003 Bruce M Simpson <bms@spc.org>
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26.\" $FreeBSD$
27.\"
28.Dd June 10, 2005
29.Dt PMAP_INIT 9
30.Os
31.Sh NAME
32.Nm pmap_init ,
33.Nm pmap_init2
34.Nd initialize the pmap subsystem
35.Sh SYNOPSIS
36.In sys/param.h
37.In vm/vm.h
38.In vm/pmap.h
39.Ft void
40.Fn pmap_init "void"
41.Ft void
42.Fn pmap_init2 "void"
43.Sh DESCRIPTION
44The
45.Fn pmap_init
46function initializes the
47.Xr pmap 9
48sub-system.
49It is called during system initialization by
50.Fn vm_init ,
51to initialize any structures that the
52.Nm
53system needs in order to map between physical and virtual memory.
54.Pp
55The
56.Fn pmap_init2
57function initializes a zone for the PV entries.
58These are used to implement page sharing at the physical level.
59A high water mark is set so that the system can recover from
60excessive numbers of PV entries.
61.Sh SEE ALSO
62.Xr pmap 9
63.Sh AUTHORS
64This manual page was written by
65.An Bruce M Simpson Aq bms@spc.org .