From owner-cvs-all  Mon May 29 15:41: 4 2000
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From: Matt Dillon <dillon@FreeBSD.org>
Date: Mon, 29 May 2000 15:40:56 -0700 (PDT)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/i386/i386 pmap.c src/sys/kern sysv_shm.c
         src/sys/vm phys_pager.c vm_fault.c vm_object.c vm_object.h
         vm_page.c vm_page.h vm_pageout.c
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dillon      2000/05/29 15:40:56 PDT

  Modified files:
    sys/i386/i386        pmap.c 
    sys/kern             sysv_shm.c 
    sys/vm               phys_pager.c vm_fault.c vm_object.c 
                         vm_object.h vm_page.c vm_page.h 
                         vm_pageout.c 
  Log:
      This is a cleanup patch to Peter's new OBJT_PHYS VM object type
      and sysv shared memory support for it.  It implements a new
      PG_UNMANAGED flag that has slightly different characteristics
      from PG_FICTICIOUS.
  
      A new sysctl, kern.ipc.shm_use_phys has been added to enable the
      use of physically-backed sysv shared memory rather then swap-backed.
      Physically backed shm segments are not tracked with PV entries,
      allowing programs which use a large shm segment as a rendezvous
      point to operate without eating an insane amount of KVM in the
      PV entry management.  Read: Oracle.
  
      Peter's OBJT_PHYS object will also allow us to eventually implement
      page-table sharing and/or 4MB physical page support for such segments.
      We're half way there.
  
  Revision  Changes    Path
  1.257     +9 -4      src/sys/i386/i386/pmap.c
  1.48      +11 -8     src/sys/kern/sysv_shm.c
  1.2       +4 -19     src/sys/vm/phys_pager.c
  1.112     +2 -2      src/sys/vm/vm_fault.c
  1.177     +12 -3     src/sys/vm/vm_object.c
  1.67      +3 -1      src/sys/vm/vm_object.h
  1.152     +57 -8     src/sys/vm/vm_page.c
  1.79      +10 -1     src/sys/vm/vm_page.h
  1.159     +11 -7     src/sys/vm/vm_pageout.c



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