From owner-freebsd-stable@FreeBSD.ORG Mon Oct 13 12:50:59 2008 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E88BC1065693; Mon, 13 Oct 2008 12:50:59 +0000 (UTC) (envelope-from gary.jennejohn@freenet.de) Received: from mout3.freenet.de (mout3.freenet.de [IPv6:2001:748:100:40::2:5]) by mx1.freebsd.org (Postfix) with ESMTP id 7B4D68FC29; Mon, 13 Oct 2008 12:50:59 +0000 (UTC) (envelope-from gary.jennejohn@freenet.de) Received: from [195.4.92.17] (helo=7.mx.freenet.de) by mout3.freenet.de with esmtpa (ID gary.jennejohn@freenet.de) (port 25) (Exim 4.69 #65) id 1KpMsz-0006J8-Az; Mon, 13 Oct 2008 14:50:57 +0200 Received: from mad62.m.pppool.de ([89.49.173.98]:23079 helo=ernst.jennejohn.org) by 7.mx.freenet.de with esmtpa (ID gary.jennejohn@freenet.de) (port 25) (Exim 4.69 #65) id 1KpMsz-0007At-2o; Mon, 13 Oct 2008 14:50:57 +0200 Date: Mon, 13 Oct 2008 14:50:54 +0200 From: Gary Jennejohn To: JoaoBR Message-ID: <20081013145054.3b458aea@ernst.jennejohn.org> In-Reply-To: <200810130935.10570.joao@matik.com.br> References: <200810101429.37244.joao@matik.com.br> <20081011113057.7402300c@ernst.jennejohn.org> <20081011101316.GA58119@icarus.home.lan> <200810130935.10570.joao@matik.com.br> X-Mailer: Claws Mail 3.5.0 (GTK+ 2.12.11; amd64-portbld-freebsd8.0) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: Jeremy Chadwick , freebsd-stable@freebsd.org, freebsd-amd64@freebsd.org Subject: Re: am2 MBs - 4g + SCSI wipes out root partition X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: gary.jennejohn@freenet.de List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 13 Oct 2008 12:51:00 -0000 On Mon, 13 Oct 2008 09:35:10 -0200 JoaoBR wrote: > On Saturday 11 October 2008 07:13:16 Jeremy Chadwick wrote: > > It's a driver problem. If you want to use SCSI then you'll have to limit > > memory to 3.5 GB. > I probably should have written - it seems to be a problem with ahc. In general SCSI seems to work, as Scott has recently documented. But see below. > > well indeed with less then 4G installed it works flawless, so the difference I > see is that former athln64 MBs had memory hole remap options or when 4Gig > installed they only gave 3.something to the OS even under amd64 - this is NOT > the case with the AM2 MBs which should support up to 8/16Mb onboard but wth > this amount freebsd amd64 does not even boot when a scsi adaptor is installed > I'm beginning to believe that it's motherboard/BIOS related and not a general problem with ahc or any other SCSI driver. I can say that at least with my Gigabyte GA-M61P-S3 I observed data corruption with 4GB of memory installed and with the BIOS mapping a part of memory above 4GB. Forcing the kernel to use only 3.5GB solved the problem. --- Gary Jennejohn