pmap_zero(9)
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
- The pmap_zero_page() function zero-fills an entire page us
- ing machinedependent 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 archi
- tecture supported by FreeBSD.
SEE ALSO
bzero(3), pmap(9)
AUTHORS
- This manual page was written by Bruce M Simpson
- <bms@spc.org>.
- BSD July 21, 2003