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From: Neel Natu <neel@FreeBSD.org>
Date: Tue, 26 Jan 2010 03:39:10 +0000 (UTC)
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Subject: cvs commit: src/sys/mips/sibyte sb_machdep.c
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neel        2010-01-26 03:39:10 UTC

  FreeBSD src repository

  Modified files:
    sys/mips/sibyte      sb_machdep.c 
  Log:
  SVN rev 203000 on 2010-01-26 03:39:10Z by neel
  
  Install the XTLB exception handler for Sibyte processors.
  
  This is a workaround for the fact that the CFE is compiled as a 64-bit
  application and therefore sets the SR_KX bit every time we call into
  it (for e.g. console).
  
  A TLB miss for any address above 0xc0000000 with the SR_KX bit set will
  end up at the XTLB exception vector. We workaround this by copying the
  standard TLB handler at the XTLB exception vector.
  
  Approved by: imp (mentor)
  
  Revision  Changes    Path
  1.4       +24 -0     src/sys/mips/sibyte/sb_machdep.c