From owner-cvs-all  Mon Apr  5 21:54:26 1999
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From: Alan Cox <alc@FreeBSD.org>
Date: Mon, 5 Apr 1999 21:52:28 -0700 (PDT)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/i386/i386 pmap.c
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alc         1999/04/05 21:52:27 PDT

  Modified files:
    sys/i386/i386        pmap.c 
  Log:
  Two changes to pmap_remove_all:
  
  1. Switch to pmap_TLB_invalidate from invltlb, eliminating a full TLB
  flush where a single-page flush suffices.  (Also, this eliminates some
  unnecessary IPIs.)
  
  2. Use "loadandclear" to update the pte, eliminating a race condition
  on SMPs.
  
  Change #2 should be committed to -STABLE.
  
  Revision  Changes    Path
  1.228     +5 -20     src/sys/i386/i386/pmap.c


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