From owner-freebsd-ppc@FreeBSD.ORG  Mon May 16 09:06:13 2005
Return-Path: <owner-freebsd-ppc@FreeBSD.ORG>
Delivered-To: freebsd-ppc@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id D000716A4CE
	for <freebsd-ppc@freebsd.org>; Mon, 16 May 2005 09:06:13 +0000 (GMT)
Received: from liberty.onthenet.com.au (liberty.OntheNet.com.au
	[203.22.124.10])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 353AA43D77
	for <freebsd-ppc@freebsd.org>; Mon, 16 May 2005 09:06:13 +0000 (GMT)
	(envelope-from grehan@freebsd.org)
Received: from [203.13.71.95] (CPE-71-95.dsl.OntheNet.net [203.13.71.95])
	j4G96BnP054409;	Mon, 16 May 2005 19:06:11 +1000 (EST)
	(envelope-from grehan@freebsd.org)
Message-ID: <42886275.4010906@freebsd.org>
Date: Mon, 16 May 2005 19:05:57 +1000
From: Peter Grehan <grehan@freebsd.org>
User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.7.2) Gecko/20041016
X-Accept-Language: en-us, en
MIME-Version: 1.0
To: Florent Thoumie <flz@xbsd.org>
References: <a06210262bea18ec9f0f6@[192.168.1.101]>
	<427D6568.3010505@freebsd.org> <a0621020bbea6115e61ab@[192.168.1.100]>
	<42840CEF.4000200@freebsd.org> <1116232215.712.4.camel@localhost>
In-Reply-To: <1116232215.712.4.camel@localhost>
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit
cc: freebsd-ppc@freebsd.org
Subject: Re: Installing FreeBSD from CD
X-BeenThere: freebsd-ppc@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Porting FreeBSD to the PowerPC <freebsd-ppc.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-ppc>,
	<mailto:freebsd-ppc-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-ppc>
List-Post: <mailto:freebsd-ppc@freebsd.org>
List-Help: <mailto:freebsd-ppc-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-ppc>,
	<mailto:freebsd-ppc-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 16 May 2005 09:06:14 -0000

Hi Florent,

> 	I thought PPC could work in both endian modes (31th or 63th bit 
> 	of MSR), that would mean FreeBSD/ppc could read UFS volumes 
> 	created by FreeBSD/i386 but not the opposite.
> 
> 	Please tell me if I'm wrong.

  Little-endian mode has varying degress of support on different 
processor models (e.g. none on the G5).

  Like it or not, PowerPC == big endian.

  The real fix for UFS interoperability is the NetBSD approach, but that 
has a complexity in making sure that *all* metadata reads/writes are 
appropriately swapped.

later,

Peter.