pmap_zero_page (9)

Leading comments

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
   documenta...

(The comments found at the beginning of the groff file "man9/pmap_zero_page.9freebsd".)

NAME

pmap_zero_page pmap_zero_area pmap_zero_idle - zero-fill a page using machine-dependent optimizations

SYNOPSIS

In sys/param.h In vm/vm.h In vm/pmap.h Ft void Fn pmap_zero_page vm_page_t m Ft void Fn pmap_zero_page_area vm_page_t m int off int size Ft void Fn pmap_zero_page_idle vm_page_t m

DESCRIPTION

The Fn pmap_zero_page function zero-fills an entire page using machine-dependent optimizations. The Fn pmap_zero_page_area function is used to zero-fill an area of a page. The range specified must not cross a page boundary; it must be contained entirely within a single page.

The Fn pmap_zero_page_idle interface is used by the vm_pagezero process. The system-wide Giant lock should not be required to be held in order to call this interface.

IMPLEMENTATION NOTES

This function is required to be implemented for each architecture supported by Fx .

SEE ALSO

bzero(3), pmap(9)

AUTHORS

This manual page was written by An Bruce M Simpson Aq bms@spc.org .