87 lines
2.6 KiB
Groff
87 lines
2.6 KiB
Groff
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.\"
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.\" Copyright (c) 2003 Bruce M Simpson <bms@spc.org>
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd July 21, 2003
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.Dt PMAP_PINIT 9
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.Sh NAME
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.Nm pmap_pinit ,
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.Nm pmap_pinit0 ,
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.Nm pmap_pinit2
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.Nd initialize pmap structures
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.Sh SYNOPSIS
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.In sys/param.h
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.In vm/vm.h
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.In vm/pmap.h
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.Ft void
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.Fn pmap_pinit "pmap_t pmap"
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.Ft void
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.Fn pmap_pinit0 "pmap_t pm"
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.Ft void
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.Fn pmap_pinit2 "pmap_t pmap"
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.Sh DESCRIPTION
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The
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.Fn pmap_pinit
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function initializes the preallocated and zeroed structure
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.Fa pmap ,
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such as one in a
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.Vt vmspace
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structure.
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.Pp
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The
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.Fn pmap_pinit0
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function initializes the physical map
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.Fa pm ,
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associated with process 0, the first process created in the system.
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.Pp
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The
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.Fn pmap_pinit2
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function wires in kernel global address entries for the physical map
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.Fa pmap ,
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which must be associated with a user process.
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It is called during process creation.
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.Pp
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To avoid a race condition between
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.Fa pmap
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intialization and
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.Fn pmap_growkernel ,
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.Fn pmap_pinit2
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should be called after the vmspace
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is attached to the process but before this
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.Fa pmap
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is activated.
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.Sh IMPLEMENTATION NOTES
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The
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.Fn pmap_pinit2
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function has been deprecated, and should be implemented as a stub
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until further notice.
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.Sh SEE ALSO
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.Xr pmap 9 ,
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.Xr pmap_growkernel 9
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.Sh AUTHORS
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This manual page was written by
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.An Bruce M Simpson Aq bms@spc.org .
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