cvs commit: src/sys/i386/i386 pmap.c

[Peter Wemm]

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