From owner-svn-src-stable-7@FreeBSD.ORG  Wed Jan 21 07:41:24 2009
Return-Path: <owner-svn-src-stable-7@FreeBSD.ORG>
Delivered-To: svn-src-stable-7@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 787C2106564A;
	Wed, 21 Jan 2009 07:41:24 +0000 (UTC) (envelope-from alc@FreeBSD.org)
Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c])
	by mx1.freebsd.org (Postfix) with ESMTP id 659148FC08;
	Wed, 21 Jan 2009 07:41:24 +0000 (UTC) (envelope-from alc@FreeBSD.org)
Received: from svn.freebsd.org (localhost [127.0.0.1])
	by svn.freebsd.org (8.14.3/8.14.3) with ESMTP id n0L7fOdg070344;
	Wed, 21 Jan 2009 07:41:24 GMT (envelope-from alc@svn.freebsd.org)
Received: (from alc@localhost)
	by svn.freebsd.org (8.14.3/8.14.3/Submit) id n0L7fODh070343;
	Wed, 21 Jan 2009 07:41:24 GMT (envelope-from alc@svn.freebsd.org)
Message-Id: <200901210741.n0L7fODh070343@svn.freebsd.org>
From: Alan Cox <alc@FreeBSD.org>
Date: Wed, 21 Jan 2009 07:41:24 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
	svn-src-stable@freebsd.org, svn-src-stable-7@freebsd.org
X-SVN-Group: stable-7
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Cc: 
Subject: svn commit: r187523 - in stable/7/sys: . amd64/amd64 contrib/pf
	dev/ath/ath_hal dev/cxgb
X-BeenThere: svn-src-stable-7@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: SVN commit messages for only the 7-stable src tree
	<svn-src-stable-7.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-stable-7>, 
	<mailto:svn-src-stable-7-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-stable-7>
List-Post: <mailto:svn-src-stable-7@freebsd.org>
List-Help: <mailto:svn-src-stable-7-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-stable-7>, 
	<mailto:svn-src-stable-7-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 21 Jan 2009 07:41:25 -0000

Author: alc
Date: Wed Jan 21 07:41:24 2009
New Revision: 187523
URL: http://svn.freebsd.org/changeset/base/187523

Log:
  MFC rev 175325
    Make pmap_is_prefaultable() more TLB friendly.  Specifically, make it use
    the kernel's direct map instead of the pmap's recursive mapping to access
    the lowest level in the page table.

Modified:
  stable/7/sys/   (props changed)
  stable/7/sys/amd64/amd64/pmap.c
  stable/7/sys/contrib/pf/   (props changed)
  stable/7/sys/dev/ath/ath_hal/   (props changed)
  stable/7/sys/dev/cxgb/   (props changed)

Modified: stable/7/sys/amd64/amd64/pmap.c
==============================================================================
--- stable/7/sys/amd64/amd64/pmap.c	Wed Jan 21 07:33:18 2009	(r187522)
+++ stable/7/sys/amd64/amd64/pmap.c	Wed Jan 21 07:41:24 2009	(r187523)
@@ -3091,7 +3091,7 @@ pmap_is_prefaultable(pmap_t pmap, vm_off
 	PMAP_LOCK(pmap);
 	pde = pmap_pde(pmap, addr);
 	if (pde != NULL && (*pde & PG_V)) {
-		pte = vtopte(addr);
+		pte = pmap_pde_to_pte(pde, addr);
 		rv = (*pte & PG_V) == 0;
 	}
 	PMAP_UNLOCK(pmap);