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_OBJECT_INIT_PT 9 30.Os 31.Sh NAME 32.Nm pmap_object_init_pt 33.Nd initialize page tables for a VM object 34.Sh SYNOPSIS 35.In sys/param.h 36.In vm/vm.h 37.In vm/pmap.h 38.Ft void 39.Fo pmap_object_init_pt 40.Fa "pmap_t pmap" "vm_offset_t addr" "vm_object_t object" 41.Fa "vm_pindex_t pindex" "vm_size_t size" "int limit" 42.Fc 43.Sh DESCRIPTION 44The 45.Fn pmap_object_init_pt 46function preloads the page table entries into the specified physical map 47.Fa pmap , 48for the given 49.Fa object 50at the virtual address 51.Fa addr , 52for 53.Fa size 54bytes, beginning at the page index 55.Fa pindex 56within the object. 57The map bits 58.Fa limit 59are heeded when creating the mapping. 60.Sh IMPLEMENTATION NOTES 61This function is not strictly required by an architecture's 62.Xr pmap 9 63implementation, but it does provide performance benefits if implemented. 64.Pp 65It is intended to eliminate the blast of soft faults on process 66startup, and immediately following a call to 67.Xr mmap 2 . 68.Sh SEE ALSO 69.Xr pmap 9 , 70.Xr vm_map 9 71.Sh AUTHORS 72This manual page was written by 73.An Bruce M Simpson Aq Mt bms@spc.org . 74