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From: Konstantin Belousov <kib@FreeBSD.org>
Date: Tue, 20 Jan 2009 12:07:49 +0000 (UTC)
To: cvs-src-old@freebsd.org
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Subject: cvs commit: src/sys/amd64/amd64 cpu_switch.S
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kib         2009-01-20 12:07:49 UTC

  FreeBSD src repository

  Modified files:
    sys/amd64/amd64      cpu_switch.S 
  Log:
  SVN rev 187470 on 2009-01-20 12:07:49Z by kib
  
  The context switch to the 32bit binary does not properly restore
  the fsbase value. The switch loads the fs segment register, that
  invalidates the value in fsbase msr, thus value in %r9 can not be
  considered the current value for fsbase anymore.
  
  Unconditionally reload fsbase when switching to 32bit binary.
  
  PR:     130526
  MFC after:      3 weeks
  
  Revision  Changes    Path
  1.165     +2 -1      src/sys/amd64/amd64/cpu_switch.S