1.\" 2.\" Copyright (c) 2003 Bruce M Simpson <bms@spc.org> 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 14.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.\" 26.\" $FreeBSD$ 27.\" 28.Dd July 21, 2003 29.Dt PMAP_QENTER 9 30.Sh NAME 31.Nm pmap_qenter , 32.Nm pmap_qremove 33.Nd manage temporary kernel space mappings 34.Sh SYNOPSIS 35.In sys/param.h 36.In vm/vm.h 37.In vm/pmap.h 38.Ft void 39.Fn pmap_qenter "vm_offset_t sva" "vm_page_t *m" "int count" 40.Ft void 41.Fn pmap_qremove "vm_offset_t sva" "int count" 42.Sh DESCRIPTION 43The 44.Fn pmap_qenter 45function accepts a linear array of 46.Fa count 47pointers to wired pages 48.Fa *m , 49and enters each of these pages into the kernel virtual address (KVA) space, 50beginning at the address 51.Fa sva . 52.Pp 53The 54.Fn pmap_qremove 55function tears out a mapping from the kernel virtual address space, 56beginning at 57.Fa sva 58and for 59.Fa count 60pages. 61.Sh IMPLEMENTATION NOTES 62The 63.Fn pmap_qenter 64function is intended for temporary mappings that do not require page 65modification or reference counting. 66Old mappings are simply overwritten. 67The pages 68.Em must 69be wired into physical memory. 70.Pp 71The corresponding 72.Fn pmap_qremove 73function is intended to remove such temporary mappings. 74.Sh SEE ALSO 75.Xr pmap 9 76.Sh AUTHORS 77This manual page was written by 78.An Bruce M Simpson Aq bms@spc.org . 79