From owner-cvs-all@FreeBSD.ORG  Mon Sep  8 20:39:24 2008
Return-Path: <owner-cvs-all@FreeBSD.ORG>
Delivered-To: cvs-all@FreeBSD.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 30A121065678;
	Mon,  8 Sep 2008 20:39:24 +0000 (UTC)
	(envelope-from marius@FreeBSD.org)
Received: from repoman.freebsd.org (repoman.freebsd.org
	[IPv6:2001:4f8:fff6::29])
	by mx1.freebsd.org (Postfix) with ESMTP id 20D428FC16;
	Mon,  8 Sep 2008 20:39:24 +0000 (UTC)
	(envelope-from marius@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 m88KdN1u061929;
	Mon, 8 Sep 2008 20:39:23 GMT
	(envelope-from marius@repoman.freebsd.org)
Received: (from svn2cvs@localhost)
	by repoman.freebsd.org (8.14.3/8.14.3/Submit) id m88KdNqQ061923;
	Mon, 8 Sep 2008 20:39:23 GMT
	(envelope-from marius@repoman.freebsd.org)
Message-Id: <200809082039.m88KdNqQ061923@repoman.freebsd.org>
X-Authentication-Warning: repoman.freebsd.org: svn2cvs set sender to
	marius@repoman.freebsd.org using -f
From: Marius Strobl <marius@FreeBSD.org>
Date: Mon, 8 Sep 2008 20:38:48 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
X-FreeBSD-CVS-Branch: HEAD
Cc: 
Subject: cvs commit: src/sys/boot/sparc64/loader main.c
 src/sys/sparc64/sparc64
 exception.S mp_exception.S pmap.c support.S swtch.S tlb.c
X-BeenThere: cvs-all@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: CVS commit messages for the entire tree <cvs-all.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-all>,
	<mailto:cvs-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/cvs-all>
List-Post: <mailto:cvs-all@freebsd.org>
List-Help: <mailto:cvs-all-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-all>,
	<mailto:cvs-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 08 Sep 2008 20:39:24 -0000

marius      2008-09-08 20:38:48 UTC

  FreeBSD src repository

  Modified files:
    sys/boot/sparc64/loader main.c 
    sys/sparc64/sparc64  exception.S mp_exception.S pmap.c 
                         support.S swtch.S tlb.c 
  Log:
  SVN rev 182877 on 2008-09-08 20:38:48Z by marius
  
  USIII and beyond CPUs have stricter requirements when it comes
  to synchronization needed after stores to internal ASIs in order
  to make side-effects visible. This mainly requires the MEMBAR #Sync
  after such stores to be replaced with a FLUSH. We use KERNBASE as
  the address to FLUSH as it is guaranteed to not trap. Actually,
  the USII synchronization rules also already require a FLUSH in
  pretty much all of the cases changed.
  We're also hitting an additional USIII synchronization rule which
  requires stores to AA_IMMU_SFSR to be immediately followed by a DONE,
  FLUSH or RETRY. Doing so triggers a RED state exception though so
  leave the MEMBAR #Sync. Linux apparently also has gotten away with
  doing the same for quite some time now, apart from the fact that
  it's not clear to me why we need to clear the valid bit from the
  SFSR in the first place.
  
  Reviewed by:    nwhitehorn
  
  Revision  Changes    Path
  1.37      +2 -1      src/sys/boot/sparc64/loader/main.c
  1.80      +12 -1     src/sys/sparc64/sparc64/exception.S
  1.15      +7 -5      src/sys/sparc64/sparc64/mp_exception.S
  1.176     +2 -2      src/sys/sparc64/sparc64/pmap.c
  1.34      +2 -1      src/sys/sparc64/sparc64/support.S
  1.36      +2 -1      src/sys/sparc64/sparc64/swtch.S
  1.11      +4 -3      src/sys/sparc64/sparc64/tlb.c