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From: Alan Cox <alc@FreeBSD.org>
Date: Sat, 23 Jan 2010 18:42:28 +0000 (UTC)
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Subject: cvs commit: src/sys/i386/i386 pmap.c src/sys/i386/include pmap.h
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alc         2010-01-23 18:42:28 UTC

  FreeBSD src repository

  Modified files:
    sys/i386/i386        pmap.c 
    sys/i386/include     pmap.h 
  Log:
  SVN rev 202894 on 2010-01-23 18:42:28Z by alc
  
  Handle a race between pmap_kextract() and pmap_promote_pde().  This race is
  known to cause a kernel crash in ZFS on i386 when superpage promotion is
  enabled.
  
  Tested by:      netchild
  MFC after:      1 week
  
  Revision  Changes    Path
  1.659     +25 -2     src/sys/i386/i386/pmap.c
  1.143     +19 -2     src/sys/i386/include/pmap.h