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: releng/10.2/share/man/man9/pmap_qenter.9 131681 2004-07-06 07:02:31Z ru $
.Dd July 21, 2003 .Dt PMAP_QENTER 9 .Os .Sh NAME .Nm pmap_qenter , .Nm pmap_qremove .Nd manage temporary kernel space mappings .Sh SYNOPSIS n sys/param.h n vm/vm.h n vm/pmap.h .Ft void .Fn pmap_qenter "vm_offset_t sva" "vm_page_t *m" "int count" .Ft void .Fn pmap_qremove "vm_offset_t sva" "int count" .Sh DESCRIPTION The .Fn pmap_qenter function accepts a linear array of .Fa count pointers to wired pages .Fa *m , and enters each of these pages into the kernel virtual address (KVA) space, beginning at the address .Fa sva .
p The .Fn pmap_qremove function tears out a mapping from the kernel virtual address space, beginning at .Fa sva and for .Fa count pages. .Sh IMPLEMENTATION NOTES The .Fn pmap_qenter function is intended for temporary mappings that do not require page modification or reference counting. Old mappings are simply overwritten. The pages .Em must be wired into physical memory.
p The corresponding .Fn pmap_qremove function is intended to remove such temporary mappings. .Sh SEE ALSO .Xr pmap 9 .Sh AUTHORS This manual page was written by .An Bruce M Simpson Aq bms@spc.org .