cvs commit: src/sys/amd64/amd64 pmap.c

[Alan Cox]

alc         2008-07-27 17:32:36 UTC

  FreeBSD src repository

  Modified files:
    sys/amd64/amd64      pmap.c 
  Log:
  SVN rev 180845 on 2008-07-27 17:32:36Z by alc
  
  Enhance pmap_change_attr().  Use pmap_demote_pde() to demote a 2MB page
  mapping to 4KB page mappings when the specified attribute change only
  applies to a portion of the 2MB page.  Previously, in such cases,
  pmap_change_attr() gave up and returned an error.
  
  Submitted by:   Magesh Dhasayyan
  
  Revision  Changes    Path
  1.635     +22 -9     src/sys/amd64/amd64/pmap.c