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From: John Baldwin <jhb@FreeBSD.org>
Date: Thu, 3 Sep 2009 13:54:58 +0000 (UTC)
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X-FreeBSD-CVS-Branch: RELENG_8
Subject: cvs commit: src/sys/amd64/amd64 pmap.c src/sys/i386/i386 pmap.c
 src/sys/i386/include pmap.h
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jhb         2009-09-03 13:54:58 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_8)
    sys/amd64/amd64      pmap.c 
    sys/i386/i386        pmap.c 
    sys/i386/include     pmap.h 
  Log:
  SVN rev 196780 on 2009-09-03 13:54:58Z by jhb
  
  MFC 196705 and 196707:
  - Improve pmap_change_attr() on i386 so that it is able to demote a large
    (2/4MB) page into 4KB pages as needed.  This should be fairly rare in
    practice.
  - Simplify pmap_change_attr() a bit:
    - Always calculate the cache bits instead of doing it on-demand.
    - Always set changed to TRUE rather than only doing it if it is false.
  
  Approved by:    re (kib)
  
  Revision   Changes    Path
  1.667.2.4  +5 -17     src/sys/amd64/amd64/pmap.c
  1.645.2.3  +170 -54   src/sys/i386/i386/pmap.c
  1.140.2.2  +4 -0      src/sys/i386/include/pmap.h