pmap_copy, pmap_copy_page — copy physical memory pages

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

Debian                                            July 21, 2003                                     PMAP_COPY(9)

       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.

       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.

       pmap_copy, pmap_copy_page — copy physical memory pages

bcopy(3), pmap(9)

#include<sys/param.h>#include<vm/vm.h>#include<vm/pmap.h>voidpmap_copy(pmap_tdst_pmap, pmap_tsrc_pmap, vm_offset_tdst_addr, vm_size_tlen, vm_offset_tsrc_addr);

       voidpmap_copy_page(vm_page_tsrc, vm_page_tdst);