Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754799AbZKJKXn (ORCPT ); Tue, 10 Nov 2009 05:23:43 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754342AbZKJKXm (ORCPT ); Tue, 10 Nov 2009 05:23:42 -0500 Received: from forum.psychotherapie.org ([217.160.22.205]:55201 "EHLO s15216962.onlinehome-server.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754166AbZKJKXm (ORCPT ); Tue, 10 Nov 2009 05:23:42 -0500 Date: Tue, 10 Nov 2009 11:21:06 +0100 From: Enrico Weigelt To: linux-kernel@vger.kernel.org Cc: eric@grokthis.net Subject: Re: FatELF patches... Message-ID: <20091110102105.GA2998@nibiru.local> Reply-To: weigelt@metux.de Mail-Followup-To: linux-kernel@vger.kernel.org, eric@grokthis.net References: <1257230619.5063.42.camel@eric-desktop.grokthis.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1257230619.5063.42.camel@eric-desktop.grokthis.net> User-Agent: Mutt/1.4.1i X-Terror: bin laden, kill bush, Briefbombe, Massenvernichtung, KZ, X-Nazi: Weisse Rasse, Hitlers Wiederauferstehung, 42, X-Antichrist: weg mit schaeuble, ausrotten, heiliger krieg, al quaida, X-Killer: 23, endloesung, Weltuntergang, X-Doof: wer das liest ist doof Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2228 Lines: 50 * Eric Windisch wrote: Hi, > I have customers which operate low-memory x86 virtual machine instances. > Until recently, these ran with as little as 64MB of RAM. Many customers > have chosen 32-bit distributions for these systems, but would like the > flexibility of scaling beyond 4GB of memory. These customers would like > the choice of migrating to 64-bit without having to reinstall their > distribution. Assuming that are reasonably critical production systems, you wont get around a specially tailored distro/package manager (where anybody already did all the vast amount of testing of the upgrade process) or do it all manually. Nevertheless you'll (at least temporarily) need an multilib system or jails. I don't see where FatELF will give you special help here. > Furthermore, I'm involved in several "cloud computing" initiatives, > including interoperability efforts. There has been discussion of > assuring portability of virtual machine images across varying > infrastructure services. I could see how FatELF could be part of a > solution to this problem, enabling a single image to function against > host services running a variety of architectures. Drop that idea. Better create images for each target platform. Let an automated build system handle that. (if you need one, feel free to contact me off-list). You want to migrate a running VM to a different arch ? Forget it. You won't come around processor emulation, better use some VP like Java, LLVM, etc. cu -- --------------------------------------------------------------------- Enrico Weigelt == metux IT service - http://www.metux.de/ --------------------------------------------------------------------- Please visit the OpenSource QM Taskforce: http://wiki.metux.de/public/OpenSource_QM_Taskforce Patches / Fixes for a lot dozens of packages in dozens of versions: http://patches.metux.de/ --------------------------------------------------------------------- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/