NAME    [Toc]    [Back]

     pmap_copy, pmap_copy_page -- copy physical memory pages

SYNOPSIS    [Toc]    [Back]

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

     void
     pmap_copy(pmap_t dst_pmap, pmap_t src_pmap, vm_offset_t dst_addr,
	 vm_size_t len, vm_offset_t src_addr);

     void
     pmap_copy_page(vm_page_t src, vm_page_t dst);

DESCRIPTION    [Toc]    [Back]

     The pmap_copy() function copies the range specified by src_addr and len
     from the source physical map src_pmap to the destination physical map
     dst_pmap at the address dst_addr.

     The pmap_copy_page() function copies the physical page src to the physical
 page dst, by mapping the page into kernel virtual address space
     (KVA), and using bcopy() to copy the page.

IMPLEMENTATION NOTES    [Toc]    [Back]

     The pmap_copy() routine is only advisory and need not do anything.  Actually
 implementing it may seriously reduce system performance.

     The pmap_copy_page() routine only operates upon a single page.

SEE ALSO    [Toc]    [Back]

     bcopy(3), pmap(9)

AUTHORS    [Toc]    [Back]

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


				 July 21, 2003