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From: "Jayachandran C." <jchandra@FreeBSD.org>
Date: Fri, 6 Aug 2010 07:32:33 +0000 (UTC)
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Subject: cvs commit: src/sys/mips/include pmap.h src/sys/mips/mips pmap.c
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jchandra    2010-08-06 07:32:33 UTC

  FreeBSD src repository

  Modified files:
    sys/mips/include     pmap.h 
    sys/mips/mips        pmap.c 
  Log:
  SVN rev 210914 on 2010-08-06 07:32:33Z by jchandra
  
  Fix the issue reported by alc:
  
   pmap_page_wired_mappings() counts the number of pv entries for the
   specified page that have the pv entry wired flag set to TRUE.
   pmap_enter() correctly initializes this flag.  However,
   pmap_change_wiring() doesn't update the corresponding pv entry flag,
   only the PTE.  So, the count returned by pmap_page_wired_mappings()
   will sometimes be wrong.
  
   In the short term, the best fix would be to eliminate the pv entry
   flag and use only the PTE.  That flag is wasting non-trivial memory.
  
  Remove pv_wired flag, and use PTE flag to count the wired mappings.
  
  Reviewed by:    alc
  
  Revision  Changes    Path
  1.17      +0 -1      src/sys/mips/include/pmap.h
  1.72      +10 -5     src/sys/mips/mips/pmap.c