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From: "George V. Neville-Neil" <gnn@FreeBSD.org>
Date: Tue, 13 Jul 2010 19:37:45 +0000 (UTC)
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Subject: cvs commit: src/sys/dev/hwpmc hwpmc_core.c hwpmc_core.h
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gnn         2010-07-13 19:37:45 UTC

  FreeBSD src repository

  Modified files:
    sys/dev/hwpmc        hwpmc_core.c hwpmc_core.h 
  Log:
  SVN rev 210012 on 2010-07-13 19:37:45Z by gnn
  
  Fix a panic brought about by writing an MSR without a proper mask.
  All of the necessary wrmsr calls are now preceded by a rdmsr
  and we leave the reserved bits alone.
  Document the bits in the relevant registers for future reference.
  
  Tested by:      mdf
  MFC after:      1 week
  
  Revision  Changes    Path
  1.11      +32 -13    src/sys/dev/hwpmc/hwpmc_core.c
  1.3       +54 -0     src/sys/dev/hwpmc/hwpmc_core.h