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From: Peter Wemm <peter@FreeBSD.org>
Date: Sun, 7 Jul 2002 21:24:26 -0700 (PDT)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/alpha/alpha pmap.c src/sys/i386/i386 pmap.c
         src/sys/ia64/ia64 pmap.c src/sys/powerpc/powerpc pmap.c
         src/sys/sparc64/sparc64 pmap.c src/sys/vm pmap.h vm_zeroidle.c
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peter       2002/07/07 21:24:26 PDT

  Modified files:
    sys/alpha/alpha      pmap.c 
    sys/i386/i386        pmap.c 
    sys/ia64/ia64        pmap.c 
    sys/powerpc/powerpc  pmap.c 
    sys/sparc64/sparc64  pmap.c 
    sys/vm               pmap.h vm_zeroidle.c 
  Log:
  Add a special page zero entry point intended to be called via the single
  threaded VM pagezero kthread outside of Giant.  For some platforms, this
  is really easy since it can just use the direct mapped region.  For others,
  IPI sending is involved or there are other issues, so grab Giant when
  needed.
  
  We still have preemption issues to deal with, but Alan Cox has an
  interesting suggestion on how to minimize the problem on x86.
  
  Use Luigi's hack for preserving the (lack of) priority.
  
  Turn the idle zeroing back on since it can now actually do something useful
  outside of Giant in many cases.
  
  Revision  Changes    Path
  1.97      +15 -0     src/sys/alpha/alpha/pmap.c
  1.335     +36 -2     src/sys/i386/i386/pmap.c
  1.68      +16 -0     src/sys/ia64/ia64/pmap.c
  1.42      +11 -0     src/sys/powerpc/powerpc/pmap.c
  1.68      +16 -0     src/sys/sparc64/sparc64/pmap.c
  1.48      +1 -0      src/sys/vm/pmap.h
  1.11      +9 -7      src/sys/vm/vm_zeroidle.c

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