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

Alan Cox alc at
Tue Aug 19 11:20:38 PDT 2003

alc         2003/08/19 11:20:34 PDT

  FreeBSD src repository

  Modified files:
    sys/i386/i386        pmap.c 
  Eliminate a possible race condition for multithreaded applications in
  _pmap_allocpte(): Guarantee that the page table page is zero filled before
  adding it to the directory.  Otherwise, a 2nd, 3rd, etc. thread could
  access a nearby virtual address and use garbage for the address
  Discussed with: peter, tegge
  Revision  Changes    Path
  1.428     +2 -13     src/sys/i386/i386/pmap.c

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