From owner-cvs-src-old@FreeBSD.ORG  Sun Jul 19 21:41:15 2009
Return-Path: <owner-cvs-src-old@FreeBSD.ORG>
Delivered-To: cvs-src-old@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id F4211106566B
	for <cvs-src-old@freebsd.org>; Sun, 19 Jul 2009 21:41:14 +0000 (UTC)
	(envelope-from alc@FreeBSD.org)
Received: from repoman.freebsd.org (repoman.freebsd.org
	[IPv6:2001:4f8:fff6::29])
	by mx1.freebsd.org (Postfix) with ESMTP id E0CCA8FC14
	for <cvs-src-old@freebsd.org>; Sun, 19 Jul 2009 21:41:14 +0000 (UTC)
	(envelope-from alc@FreeBSD.org)
Received: from repoman.freebsd.org (localhost [127.0.0.1])
	by repoman.freebsd.org (8.14.3/8.14.3) with ESMTP id n6JLfEEN018996
	for <cvs-src-old@freebsd.org>; Sun, 19 Jul 2009 21:41:14 GMT
	(envelope-from alc@repoman.freebsd.org)
Received: (from svn2cvs@localhost)
	by repoman.freebsd.org (8.14.3/8.14.3/Submit) id n6JLfEgO018995
	for cvs-src-old@freebsd.org; Sun, 19 Jul 2009 21:41:14 GMT
	(envelope-from alc@repoman.freebsd.org)
Message-Id: <200907192141.n6JLfEgO018995@repoman.freebsd.org>
X-Authentication-Warning: repoman.freebsd.org: svn2cvs set sender to
	alc@repoman.freebsd.org using -f
From: Alan Cox <alc@FreeBSD.org>
Date: Sun, 19 Jul 2009 21:40:19 +0000 (UTC)
To: cvs-src-old@freebsd.org
X-FreeBSD-CVS-Branch: HEAD
Subject: cvs commit: src/sys/amd64/amd64 pmap.c src/sys/i386/i386 pmap.c
 src/sys/i386/xen pmap.c src/sys/vm device_pager.c
X-BeenThere: cvs-src-old@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: **OBSOLETE** CVS commit messages for the src tree
	<cvs-src-old.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-src-old>,
	<mailto:cvs-src-old-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/cvs-src-old>
List-Post: <mailto:cvs-src-old@freebsd.org>
List-Help: <mailto:cvs-src-old-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-src-old>,
	<mailto:cvs-src-old-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 19 Jul 2009 21:41:15 -0000

alc         2009-07-19 21:40:19 UTC

  FreeBSD src repository

  Modified files:
    sys/amd64/amd64      pmap.c 
    sys/i386/i386        pmap.c 
    sys/i386/xen         pmap.c 
    sys/vm               device_pager.c 
  Log:
  SVN rev 195774 on 2009-07-19 21:40:19Z by alc
  
  Change the handling of fictitious pages by pmap_page_set_memattr() on
  amd64 and i386.  Essentially, fictitious pages provide a mechanism for
  creating aliases for either normal or device-backed pages.  Therefore,
  pmap_page_set_memattr() on a fictitious page needn't update the direct
  map or flush the cache.  Such actions are the responsibility of the
  "primary" instance of the page or the device driver that "owns" the
  physical address.  For example, these actions are already performed by
  pmap_mapdev().
  
  The device pager needn't restore the memory attributes on a fictitious
  page before releasing it.  It's now pointless.
  
  Add pmap_page_set_memattr() to the Xen pmap.
  
  Approved by:    re (kib)
  
  Revision  Changes    Path
  1.665     +5 -2      src/sys/amd64/amd64/pmap.c
  1.642     +6 -5      src/sys/i386/i386/pmap.c
  1.15      +19 -0     src/sys/i386/xen/pmap.c
  1.91      +4 -12     src/sys/vm/device_pager.c