From mboxrd@z Thu Jan 1 00:00:00 1970 From: Karol Kozimor Subject: Re: ACPI stops working after memory upgrade vpr Matrix 175b4 Date: Fri, 6 Feb 2004 01:51:09 +0100 Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: <20040206005109.GA13102@hell.org.pl> References: <20040204073941.05d71e0b.rddunlap@osdl.org> <20040205123049.GC22034@hell.org.pl> <20040205082758.1917e71a.rddunlap@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-2 Return-path: Content-Disposition: inline In-Reply-To: <20040205082758.1917e71a.rddunlap-3NddpPZAyC0@public.gmane.org> Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: "Randy.Dunlap" Cc: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-acpi@vger.kernel.org Thus wrote Randy.Dunlap: > I discussed this with Andy Grover and he said that the DSDT isn't > where the memory size is defined. It should just be coming from I think you're getting me wrong here: the DSDT clearly does not define the amount of RAM used by the system, but being dynamically generated by BIOS, it may include references to fixed memory addresses that can vary with the amount of RAM installed. If those addresses change due to such an upgrade, overriding the BIOS-generated DSDT (containing the right addresses) with one that was obtained from a system with a different amount of RAM (with addresses correct for that amount) may indeed not work. > the e820 BIOS calls, not from ACPI DSDT etc., which certainly > made sense to me, as that is something that a user wouldn't need > to modify after changing the memory size of a system. The user shouldn't need to supply his own DSDT in the first place. Best regards, -- Karol 'sziwan' Kozimor sziwan-DETuoxkZsSqrDJvtcaxF/A@public.gmane.org ------------------------------------------------------- The SF.Net email is sponsored by EclipseCon 2004 Premiere Conference on Open Tools Development and Integration See the breadth of Eclipse activity. February 3-5 in Anaheim, CA. http://www.eclipsecon.org/osdn