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From: Nathan Whitehorn <nwhitehorn@FreeBSD.org>
Date: Sat, 20 Feb 2010 16:13:43 +0000 (UTC)
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Subject: cvs commit: src/sys/powerpc/booke copyinout.c
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nwhitehorn    2010-02-20 16:13:43 UTC

  FreeBSD src repository

  Modified files:
    sys/powerpc/booke    copyinout.c 
  Log:
  SVN rev 204126 on 2010-02-20 16:13:43Z by nwhitehorn
  
  Merge r198724 to Book-E. casuword() non-atomically read the current value
  of its argument before atomically replacing it, which could occasionally
  return the wrong value on an SMP system. This resulted in user mutex
  operations hanging when using threaded applications.
  
  Revision  Changes    Path
  1.2       +13 -2     src/sys/powerpc/booke/copyinout.c