From owner-freebsd-stable@FreeBSD.ORG Thu Mar 31 06:00:37 2005 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 93D7016A4CF for ; Thu, 31 Mar 2005 06:00:37 +0000 (GMT) Received: from smtp803.mail.sc5.yahoo.com (smtp803.mail.sc5.yahoo.com [66.163.168.182]) by mx1.FreeBSD.org (Postfix) with SMTP id E2BBA43D58 for ; Thu, 31 Mar 2005 06:00:35 +0000 (GMT) (envelope-from noackjr@alumni.rice.edu) Received: from unknown (HELO optimator.noacks.org) (noacks@swbell.net@70.240.208.130 with login) by smtp803.mail.sc5.yahoo.com with SMTP; 31 Mar 2005 06:00:35 -0000 Received: from localhost (localhost [127.0.0.1]) by optimator.noacks.org (Postfix) with ESMTP id 86FB461BC; Thu, 31 Mar 2005 00:00:34 -0600 (CST) Received: from optimator.noacks.org ([127.0.0.1]) by localhost (optimator.noacks.org [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 08538-15; Thu, 31 Mar 2005 00:00:23 -0600 (CST) Received: from compgeek.noacks.org (compgeek [192.168.1.10]) by optimator.noacks.org (Postfix) with ESMTP id 0ADD7612E; Thu, 31 Mar 2005 00:00:23 -0600 (CST) Received: from [127.0.0.1] (localhost [127.0.0.1]) by compgeek.noacks.org (8.13.3/8.13.3) with ESMTP id j2V60MMf051937; Thu, 31 Mar 2005 00:00:22 -0600 (CST) (envelope-from noackjr@alumni.rice.edu) Message-ID: <424B91F6.4000400@alumni.rice.edu> Date: Thu, 31 Mar 2005 00:00:22 -0600 From: Jon Noack User-Agent: Mozilla Thunderbird 1.0.2 (X11/20050326) X-Accept-Language: en-us, en MIME-Version: 1.0 To: "Greg 'groggy' Lehey" References: <20050330223546.GA4705@troutmask.apl.washington.edu> <20050330224445.GW84137@wantadilla.lemis.com> <200503311032.33718.doconnor@gsoft.com.au> <20050331015429.GH6252@wantadilla.lemis.com> <657eb6604d1e00368d77f047a8b5e074@FreeBSD.org> <20050331040811.GL6252@wantadilla.lemis.com> <424B7C74.4060203@samsco.org> <20050331051458.GM6252@wantadilla.lemis.com> <424B8A94.5070300@alumni.rice.edu> <424B8A4F.7050607@samsco.org> <20050331054911.GN6252@wantadilla.lemis.com> In-Reply-To: <20050331054911.GN6252@wantadilla.lemis.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: amavisd-new at noacks.org cc: freebsd-stable@FreeBSD.org cc: John Baldwin cc: FreeBSD-amd64@FreeBSD.org Subject: Re: Problems with AMD64 and 8 GB RAM? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: noackjr@alumni.rice.edu List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 Mar 2005 06:00:37 -0000 On 03/30/05 23:49, Greg 'groggy' Lehey wrote: > On Wednesday, 30 March 2005 at 22:27:43 -0700, Scott Long wrote: >>Jon Noack wrote: >>>On 03/30/05 23:14, Greg 'groggy' Lehey wrote: >>>>On Wednesday, 30 March 2005 at 21:28:36 -0700, Scott Long wrote: >>>>>Greg 'groggy' Lehey wrote: >>>>>>On Wednesday, 30 March 2005 at 23:01:03 -0500, John Baldwin wrote: >>>>>>>It would be interesting to see the contents of your MADT to see if >>>>>>>it's trying to use a 64-bit PA for your APIC. >>>>>> >>>>>>Any suggestions about how to do so? >>>>> >>>>>man acpidump >>>> >>>>How do you run that on a system that won't boot? >>> >>>You said the system worked with 4 GB (albeit detecting only 3.5 >>>GB). > > Yes, this is correct. A number of people have explained why it only > detected 3.5 GB in this configuration. > >>>My perception of this whole ACPI thing is that it is fixed in your >>>BIOS (although it can be overridden by the OS). As such, the >>>amount of RAM you have in the machine shouldn't change acpidump >>>results. Is that not correct? >> >>This is absolutely correct. > > Ah, so you meant to say that the output from the system running with 4 > GB memory is useful? That wasn't in the man page you pointed to. > What it does say is: > >>When invoked with the -t flag, the acpidump utility dumps contents of >>the following tables: >> >>... MADT > > This may be the case, but between man page and output some terminology > must have changed. I can't see any reference to anything like an MADT > there. Does that mean that there isn't one, or that ACPI can't find > it, or does the section APIC refer to/dump the MADT? Here's the > complete output of acpidump -t, anyway: > > > > Since I don't know anything about ACPI, this doesn't say too much to > me. Suggestions welcome. If the APIC section is the MADT, it looks > as if we should update the docco. My limited research (as in, Google) shows that the MADT was defined as part of ACPI 2.0: http://www.microsoft.com/whdc/system/platform/64bit/IA64_ACPI.mspx According to your previous link the motherboard specs, it supports both ACPI 1.0A and 2.0. Perhaps there is a BIOS knob to toggle between the two? Jon