From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail143.messagelabs.com (mail143.messagelabs.com [216.82.254.35]) by kanga.kvack.org (Postfix) with ESMTP id 928716B0087 for ; Wed, 5 Jan 2011 21:21:07 -0500 (EST) Received: from mail-iw0-f169.google.com (mail-iw0-f169.google.com [209.85.214.169]) (authenticated bits=0) by smtp1.linux-foundation.org (8.14.2/8.13.5/Debian-3ubuntu1.1) with ESMTP id p062KZHd010369 (version=TLSv1/SSLv3 cipher=RC4-MD5 bits=128 verify=FAIL) for ; Wed, 5 Jan 2011 18:20:36 -0800 Received: by iwn40 with SMTP id 40so16629106iwn.14 for ; Wed, 05 Jan 2011 18:20:35 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <20110106111231.4fc98855.kamezawa.hiroyu@jp.fujitsu.com> References: <20110104135148.112d89c5.akpm@linux-foundation.org> <20110106111231.4fc98855.kamezawa.hiroyu@jp.fujitsu.com> From: Linus Torvalds Date: Wed, 5 Jan 2011 18:20:15 -0800 Message-ID: Subject: Re: [Bug 25042] New: RAM buffer I/O resource badly interacts with memory hot-add Content-Type: text/plain; charset=ISO-8859-1 Sender: owner-linux-mm@kvack.org To: KAMEZAWA Hiroyuki Cc: Andrew Morton , linux-mm@kvack.org, linux-acpi@vger.kernel.org, bugzilla-daemon@bugzilla.kernel.org, petr@vandrovec.name, akataria@vmware.com List-ID: On Wed, Jan 5, 2011 at 6:12 PM, KAMEZAWA Hiroyuki wrote: > > Hmm ? Why do you need to place "hot-added" memory's address range next to System > RAM ? Sparsemem allows sparse memory layout. Well, even without sparsemem, why couldn't the initial memory image just be more nicely aligned to 256MB or something? Linus -- 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/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: email@kvack.org