From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from d03relay04.boulder.ibm.com (d03relay04.boulder.ibm.com [9.17.195.106]) by e34.co.us.ibm.com (8.12.10/8.12.9) with ESMTP id iAHMgfAD128098 for ; Wed, 17 Nov 2004 17:42:41 -0500 Received: from d03av02.boulder.ibm.com (d03av02.boulder.ibm.com [9.17.195.168]) by d03relay04.boulder.ibm.com (8.12.10/NCO/VER6.6) with ESMTP id iAHMgfQC158954 for ; Wed, 17 Nov 2004 15:42:41 -0700 Received: from d03av02.boulder.ibm.com (loopback [127.0.0.1]) by d03av02.boulder.ibm.com (8.12.11/8.12.11) with ESMTP id iAHMgfI4029908 for ; Wed, 17 Nov 2004 15:42:41 -0700 Subject: Re: [Lhms-devel] [RFC] fix for hot-add enabled SRAT/BIOS and numa KVA areas From: Dave Hansen In-Reply-To: <20041117133315.92B7.YGOTO@us.fujitsu.com> References: <1100659057.26335.125.camel@knk> <20041117133315.92B7.YGOTO@us.fujitsu.com> Content-Type: text/plain Message-Id: <1100731354.12373.224.camel@localhost> Mime-Version: 1.0 Date: Wed, 17 Nov 2004 14:42:34 -0800 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Yasunori Goto Cc: keith , external hotplug mem list , linux-mm , Chris McDermott List-ID: On Wed, 2004-11-17 at 14:33, Yasunori Goto wrote: > But e820 probably indicates just memory areas which > are already connected on the board, right? It's more than that. It indicates which were connected the first time that the machine was powered on. If you suspend or hibernate the system for some reason, it has to always present the e820 as it initially appeared. > BTW, I have a question. > - Can x445 be attached memory without removing the node? > In my concern machine, there is no physical space to > hot add or exchange memory without physical removing > the node. But, this SRAT table indicate that > all of proximity is 0x01.... > Or is it just logical attachment? You can't remove nodes, just DIMMs. The x440 hotplug is more like the SMP case that I've always been concerned with. -- Dave -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: aart@kvack.org