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From: Peter Wemm <peter@FreeBSD.org>
Date: Sat, 25 Oct 2003 11:51:41 -0700 (PDT)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org,
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X-FreeBSD-CVS-Branch: HEAD
Subject: cvs commit: src/sys/i386/i386 pmap.c
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peter       2003/10/25 11:51:41 PDT

  FreeBSD src repository

  Modified files:
    sys/i386/i386        pmap.c 
  Log:
  For the SMP case, flush the TLB at the beginning of the page zero/copy
  routines.  Otherwise we run into trouble with speculative tlb preloads
  on SMP systems.  This effectively defeats Jeff's revision 1.438
  optimization (for his pentium4-M laptop) in the SMP case.  It breaks
  other systems, particularly athlon-MP's.
  
  Revision  Changes    Path
  1.450     +13 -0     src/sys/i386/i386/pmap.c