cvs commit: src/sys/boot/ofw/libofw ofw_copy.c

[Peter Grehan]

grehan      2005-05-19 07:21:46 UTC

  FreeBSD src repository

  Modified files:
    sys/boot/ofw/libofw  ofw_copy.c 
  Log:
  Change ofw_readin/ofw_copyin to map the entire region before
  copying, rather than a page at a time. This was creating far
  too many single-page mappings, and eventually OFW overflowed
  some internal data structure and refused to map any more.
  The new algorithm creates far less mappings and fixed a bug
  where multiple mappings for the same page would be created.
  
  'Twas known this was a problem, but only became urgent when the
  install CD's mfs_root grew large enough to cause the overflow.
  
  Revision  Changes    Path
  1.15      +74 -24    src/sys/boot/ofw/libofw/ofw_copy.c