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NAME    [Toc]    [Back]

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

SYNOPSIS    [Toc]    [Back]

     #include <sys/param.h>
     #include <vm/vm.h>
     #include <vm/pmap.h>

     pmap_zero_page(vm_page_t m);

     pmap_zero_page_area(vm_page_t m, int off, int size);

     pmap_zero_page_idle(vm_page_t m);

DESCRIPTION    [Toc]    [Back]

     The pmap_zero_page() function zero-fills an entire page using 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.


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

SEE ALSO    [Toc]    [Back]

     bzero(3), pmap(9)

AUTHORS    [Toc]    [Back]

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

				 July 21, 2003
[ Back ]
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