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 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

       bzero(3), pmap(9)

AUTHORS

       This manual page was written by Bruce M Simpson <bms@spc.org>.

Debian                                            July 21, 2003                                     PMAP_ZERO(9)