From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Mon, 20 Aug 2007 11:56:33 -0700 (PDT) From: Christoph Lameter Subject: Re: [Patch](memory hotplug) Hot-add with sparsemem-vmemmap In-Reply-To: <20070817155908.7D91.Y-GOTO@jp.fujitsu.com> Message-ID: References: <20070817155908.7D91.Y-GOTO@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Yasunori Goto Cc: Andy Whitcroft , Andrew Morton , Mel Gorman , linux-mm List-ID: On Fri, 17 Aug 2007, Yasunori Goto wrote: > Todo: # Even if this patch is applied, the message "[xxxx-xxxx] potential > offnode page_structs" is displayed. To allocate memmap on its node, > memmap (and pgdat) must be initialized itself like chicken and > egg relationship. Hmmmm.... You need to create something like the bootmem allocator? Or relocate the memory map later. Or just add a small piece of memory first so that only one memmap block is placed off line? > # vmemmap_unpopulate will be necessary for followings. > - For cancel hot-add due to error. > - For unplug. > > Please comment. Looks fine to me. -- 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: email@kvack.org