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.\" $FreeBSD: head/share/man/man9/pmap_init.9 267936 2014-06-26 21:44:30Z bapt $
.\"
.Dd June 10, 2005
.Dt PMAP_INIT 9
.Os
.Sh NAME
.Nm pmap_init ,
.Nm pmap_init2
.Nd initialize the pmap subsystem
.Sh SYNOPSIS
.In sys/param.h
.In vm/vm.h
.In vm/pmap.h
.Ft void
.Fn pmap_init "void"
.Ft void
.Fn pmap_init2 "void"
.Sh DESCRIPTION
The
.Fn pmap_init
function initializes the
.Xr pmap 9
sub-system.
It is called during system initialization by
.Fn vm_init ,
to initialize any structures that the
.Nm
system needs in order to map between physical and virtual memory.
.Pp
The
.Fn pmap_init2
function initializes a zone for the PV entries.
These are used to implement page sharing at the physical level.
A high water mark is set so that the system can recover from
excessive numbers of PV entries.
.Sh SEE ALSO
.Xr pmap 9
.Sh AUTHORS
This manual page was written by
.An Bruce M Simpson Aq Mt bms@spc.org .