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From: Konstantin Belousov <kib@FreeBSD.org>
Date: Thu, 1 Oct 2009 12:52:48 +0000 (UTC)
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Subject: cvs commit: src/sys/amd64/amd64 initcpu.c src/sys/i386/i386
 initcpu.c
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kib         2009-10-01 12:52:48 UTC

  FreeBSD src repository

  Modified files:
    sys/amd64/amd64      initcpu.c 
    sys/i386/i386        initcpu.c 
  Log:
  SVN rev 197663 on 2009-10-01 12:52:48Z by kib
  
  As a workaround, for Intel CPUs, do not use CLFLUSH in
  pmap_invalidate_cache_range() when self-snoop is apparently not reported
  in cpu features. We get a reserved trap when clflushing APIC registers
  window.
  
  XEN in full system virtualization mode removes self-snoop from CPU
  features, making this a problem.
  
  Tested by:      csjp
  Reviewed by:    alc
  MFC after:      3 days
  
  Revision  Changes    Path
  1.56      +6 -0      src/sys/amd64/amd64/initcpu.c
  1.63      +6 -0      src/sys/i386/i386/initcpu.c