From owner-svn-src-stable-8@FreeBSD.ORG  Sat Jan 28 23:18:02 2012
Return-Path: <owner-svn-src-stable-8@FreeBSD.ORG>
Delivered-To: svn-src-stable-8@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id BA4FE1065673;
	Sat, 28 Jan 2012 23:18:02 +0000 (UTC)
	(envelope-from marius@FreeBSD.org)
Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c])
	by mx1.freebsd.org (Postfix) with ESMTP id A472F8FC0A;
	Sat, 28 Jan 2012 23:18:02 +0000 (UTC)
Received: from svn.freebsd.org (localhost [127.0.0.1])
	by svn.freebsd.org (8.14.4/8.14.4) with ESMTP id q0SNI2IR003552;
	Sat, 28 Jan 2012 23:18:02 GMT (envelope-from marius@svn.freebsd.org)
Received: (from marius@localhost)
	by svn.freebsd.org (8.14.4/8.14.4/Submit) id q0SNI2nt003550;
	Sat, 28 Jan 2012 23:18:02 GMT (envelope-from marius@svn.freebsd.org)
Message-Id: <201201282318.q0SNI2nt003550@svn.freebsd.org>
From: Marius Strobl <marius@FreeBSD.org>
Date: Sat, 28 Jan 2012 23:18:02 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
	svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org
X-SVN-Group: stable-8
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Cc: 
Subject: svn commit: r230672 - stable/8/sys/sparc64/sparc64
X-BeenThere: svn-src-stable-8@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: SVN commit messages for only the 8-stable src tree
	<svn-src-stable-8.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-stable-8>, 
	<mailto:svn-src-stable-8-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-stable-8>
List-Post: <mailto:svn-src-stable-8@freebsd.org>
List-Help: <mailto:svn-src-stable-8-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-stable-8>, 
	<mailto:svn-src-stable-8-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 28 Jan 2012 23:18:02 -0000

Author: marius
Date: Sat Jan 28 23:18:02 2012
New Revision: 230672
URL: http://svn.freebsd.org/changeset/base/230672

Log:
  MFC: r225888
  
  Add a comment about why contrary to what once would think running all of
  userland with total store order actually is appropriate.

Modified:
  stable/8/sys/sparc64/sparc64/machdep.c
Directory Properties:
  stable/8/sys/   (props changed)
  stable/8/sys/amd64/include/xen/   (props changed)
  stable/8/sys/cddl/contrib/opensolaris/   (props changed)
  stable/8/sys/contrib/dev/acpica/   (props changed)
  stable/8/sys/contrib/pf/   (props changed)

Modified: stable/8/sys/sparc64/sparc64/machdep.c
==============================================================================
--- stable/8/sys/sparc64/sparc64/machdep.c	Sat Jan 28 23:17:58 2012	(r230671)
+++ stable/8/sys/sparc64/sparc64/machdep.c	Sat Jan 28 23:18:02 2012	(r230672)
@@ -1014,6 +1014,10 @@ exec_setregs(struct thread *td, u_long e
 	tf->tf_out[6] = sp - SPOFF - sizeof(struct frame);
 	tf->tf_tnpc = entry + 4;
 	tf->tf_tpc = entry;
+	/*
+	 * While we could adhere to the memory model indicated in the ELF
+	 * header, it turns out that just always using TSO performs best.
+	 */
 	tf->tf_tstate = TSTATE_IE | TSTATE_PEF | TSTATE_MM_TSO;
 
 	td->td_retval[0] = tf->tf_out[0];