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diff --git a/share/man/man9/pmap_object_init_pt.9 b/share/man/man9/pmap_object_init_pt.9 new file mode 100644 index 0000000..f87c8a9 --- /dev/null +++ b/share/man/man9/pmap_object_init_pt.9 @@ -0,0 +1,73 @@ +.\" +.\" 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. +.\" +.\" $FreeBSD$ +.\" +.Dd July 21, 2003 +.Dt PMAP_OBJECT_INIT_PT 9 +.Os +.Sh NAME +.Nm pmap_object_init_pt +.Nd initialize page tables for a VM object +.Sh SYNOPSIS +.In sys/param.h +.In vm/vm.h +.In vm/pmap.h +.Ft void +.Fo pmap_object_init_pt +.Fa "pmap_t pmap" "vm_offset_t addr" "vm_object_t object" +.Fa "vm_pindex_t pindex" "vm_size_t size" "int limit" +.Fc +.Sh DESCRIPTION +The +.Fn pmap_object_init_pt +function preloads the page table entries into the specified physical map +.Fa pmap , +for the given +.Fa object +at the virtual address +.Fa addr , +for +.Fa size +bytes, beginning at the page index +.Fa pindex +within the object. +The map bits +.Fa limit +are heeded when creating the mapping. +.Sh IMPLEMENTATION NOTES +This function is not strictly required by an architecture's +.Xr pmap 9 +implementation, but it does provide performance benefits if implemented. +.Pp +It is intended to eliminate the blast of soft faults on process +startup, and immediately following a call to +.Xr mmap 2 . +.Sh SEE ALSO +.Xr pmap 9 , +.Xr vm_map 9 +.Sh AUTHORS +This manual page was written by +.An Bruce M Simpson Aq Mt bms@spc.org . |