From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Hansen Subject: Re: [Lhms-devel] Re: [PATCH] ACPI based Memory Hotplug Driver Patch Date: Mon, 13 Sep 2004 21:11:44 -0700 Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: <1095135104.10726.8.camel@localhost> References: <20040910230200.73eb0374.tokunaga.keiich@jp.fujitsu.com> <1094837554.32531.1997.camel@nighthawk> <20040913172318.791db349.tokunaga.keiich@jp.fujitsu.com> <1095064865.4671.5.camel@localhost> <20040914115844.1e12203d.tokunaga.keiich@jp.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20040914115844.1e12203d.tokunaga.keiich-+CUm20s59erQFUHtdCDX3A@public.gmane.org> Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Keiichiro Tokunaga Cc: naveen.b.s-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, Matthew E Tolentino , acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org, lhms , Joel Schopp List-Id: linux-acpi@vger.kernel.org On Mon, 2004-09-13 at 19:58, Keiichiro Tokunaga wrote: > Creating links from one to the other sounds fine. But I don't think a > physical start address of an ACPI memory object can be detemined > from the memsections that belong to that object. This is because > there is no gurantee that an ACPI memory object and a memsection > that belongs to the object always have the same start address. So, > I think the interface to show physical memory range is necessary in > both the ACPI and memsection directory. I agree. It's very possible that ACPI memory areas will be able to span multiple memory sections, as the inverse. Although, I do wonder if we can have memory laid out in the firmware/ directory in some kind of firmware-agnostic way. What I want is to make sure that any hotplug memory application that is written can use the same directories no matter whether it is a ppc machine using OpenFirmware or an x86/ia64 machine using ACPI. Instead of just laying thing out in firmware/acpi, can we have another directory that mirrors this information in the system/devices/ directory, but is identical across architectures? ppc64 guys, what do you think? -- Dave ------------------------------------------------------- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 13. Go here: http://sf.net/ppc_contest.php