Copyright (c) 2003 Bruce M Simpson <bms@spc.org>
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$FreeBSD$

.Dd July 21, 2003 .Dt PMAP_ZERO 9 .Os .Sh NAME .Nm pmap_zero_page , .Nm pmap_zero_area , .Nm pmap_zero_idle .Nd zero-fill a page using machine-dependent optimizations .Sh SYNOPSIS n sys/param.h n vm/vm.h n 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" .Sh 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.

p The .Fn pmap_zero_page_idle interface is used by the .Nm vm_pagezero process. The system-wide .Va Giant lock should not be required to be held in order to call this interface. .Sh IMPLEMENTATION NOTES This function is required to be implemented for each architecture supported by .Fx . .Sh SEE ALSO .Xr bzero 3 , .Xr pmap 9 .Sh AUTHORS This manual page was written by .An Bruce M Simpson Aq bms@spc.org .