NAME
pmap_zero_page,
pmap_zero_area,
pmap_zero_idle —
zero-fill a page using
machine-dependent optimizations
SYNOPSIS
#include
<sys/param.h>
#include <vm/vm.h>
#include <vm/pmap.h>
void
pmap_zero_page(vm_page_t
m);
void
pmap_zero_page_area(vm_page_t
m, int off,
int size);
void
pmap_zero_page_idle(vm_page_t
m);
DESCRIPTION
Thepmap_zero_page()
function zero-fills an entire page using machine-dependent optimizations. The
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
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 FreeBSD.
SEE ALSO
AUTHORS
This manual page was written by Bruce M Simpson <bms@spc.org>.