From owner-freebsd-amd64@FreeBSD.ORG Thu Aug 18 20:12:27 2005 Return-Path: X-Original-To: freebsd-amd64@freebsd.org Delivered-To: freebsd-amd64@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id E285C16A41F for ; Thu, 18 Aug 2005 20:12:27 +0000 (GMT) (envelope-from martin@gneto.com) Received: from mxfep02.bredband.com (mxfep02.bredband.com [195.54.107.73]) by mx1.FreeBSD.org (Postfix) with ESMTP id 04C7743D46 for ; Thu, 18 Aug 2005 20:12:25 +0000 (GMT) (envelope-from martin@gneto.com) Received: from as6-1-5.kr.m.bonet.se ([83.227.181.30] [83.227.181.30]) by mxfep02.bredband.com with ESMTP id <20050818201225.LPNL17509.mxfep02.bredband.com@as6-1-5.kr.m.bonet.se>; Thu, 18 Aug 2005 22:12:25 +0200 Received: from [192.168.10.11] (euklides.gneto.com [192.168.10.11]) by as6-1-5.kr.m.bonet.se (Postfix) with ESMTP id 5EFE7678B9; Thu, 18 Aug 2005 22:12:15 +0200 (CEST) Message-ID: <4304EB9F.1090403@gneto.com> Date: Thu, 18 Aug 2005 22:12:15 +0200 From: Martin Nilsson User-Agent: Mozilla Thunderbird 1.0.6 (X11/20050724) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Vivek Khera References: <20050815125657.A92343@cons.org> <20050815172250.GA32804@troutmask.apl.washington.edu> <20050815183846.A99145@cons.org> <430173BE.4080802@samsco.org> <20050816111428.A24284@cons.org> <43020F08.6070108@samsco.org> <43034B86.9080900@gneto.com> <16572053-1E41-4156-8CA9-362832D1CD60@khera.org> In-Reply-To: <16572053-1E41-4156-8CA9-362832D1CD60@khera.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-amd64@freebsd.org Subject: Re: 4 GB RAM showing up as 3, BIOS memory hole and all that X-BeenThere: freebsd-amd64@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Porting FreeBSD to the AMD64 platform List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 18 Aug 2005 20:12:28 -0000 Vivek Khera wrote: > > On Aug 17, 2005, at 10:36 AM, Martin Nilsson wrote: > >> The E stepping Opteron can remap memory. The earlier versions can't. >> > > How does one tell the stepping is E? My dmesg.boot says "Id = 0xf5a > Stepping = 10" on my 246 CPUs. The document here: http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/25759.pdf Says that it is stepping CG, the one before E4. This one is common in shops right now. You can get the meaning of the ordernumber (number on top of the CPU) at this page: http://www.amdcompare.com/us%2Den/opteron/Default.aspx I have not been able to get E4 stepping 246:es yet in Sweden, they are simply not available yet. Regards, Martin Nilsson