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

.Dd July 21, 2003 .Dt PMAP_COPY 9 .Os .Sh NAME .Nm pmap_copy , .Nm pmap_copy_page .Nd copy physical memory pages .Sh SYNOPSIS n sys/param.h n vm/vm.h n vm/pmap.h .Ft void .Fo pmap_copy .Fa "pmap_t dst_pmap" "pmap_t src_pmap" "vm_offset_t dst_addr" .Fa "vm_size_t len" "vm_offset_t src_addr" .Fc .Ft void .Fn pmap_copy_page "vm_page_t src" "vm_page_t dst" .Sh DESCRIPTION The .Fn pmap_copy function copies the range specified by .Fa src_addr and .Fa len from the source physical map .Fa src_pmap to the destination physical map .Fa dst_pmap at the address .Fa dst_addr .

p The .Fn pmap_copy_page function copies the physical page .Fa src to the physical page .Fa dst , by mapping the page into kernel virtual address space (KVA), and using .Fn bcopy to copy the page. .Sh IMPLEMENTATION NOTES The .Fn pmap_copy routine is only advisory and need not do anything. Actually implementing it may seriously reduce system performance.

p The .Fn pmap_copy_page routine only operates upon a single page. .Sh SEE ALSO .Xr bcopy 3 , .Xr pmap 9 .Sh AUTHORS This manual page was written by .An Bruce M Simpson Aq bms@spc.org .