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From: Alan Cox <alc@FreeBSD.org>
Date: Tue, 2 Mar 2010 16:29:08 +0000 (UTC)
To: cvs-src-old@freebsd.org
X-FreeBSD-CVS-Branch: RELENG_8
Subject: cvs commit: src/sys/amd64/amd64 pmap.c src/sys/i386/i386 pmap.c
 src/sys/kern subr_param.c src/sys/sys systm.h
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alc         2010-03-02 16:29:08 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_8)
    sys/amd64/amd64      pmap.c 
    sys/i386/i386        pmap.c 
    sys/kern             subr_param.c 
    sys/sys              systm.h 
  Log:
  SVN rev 204584 on 2010-03-02 16:29:08Z by alc
  
  MFC r204420
    When running as a guest operating system, the FreeBSD kernel must assume
    that the virtual machine monitor has enabled machine check exceptions.
    Unfortunately, on AMD Family 10h processors the machine check hardware
    has a bug (Erratum 383) that can result in a false machine check exception
    when a superpage promotion occurs.  Thus, I am disabling superpage
    promotion when the FreeBSD kernel is running as a guest operating system
    on an AMD Family 10h processor.
  
  Revision    Changes    Path
  1.667.2.9   +9 -0      src/sys/amd64/amd64/pmap.c
  1.645.2.10  +9 -0      src/sys/i386/i386/pmap.c
  1.90.2.3    +4 -4      src/sys/kern/subr_param.c
  1.276.2.6   +3 -0      src/sys/sys/systm.h