From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 3 May 2002 18:28:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 3 May 2002 18:28:20 -0400 Received: from e21.nc.us.ibm.com ([32.97.136.227]:60386 "EHLO e21.nc.us.ibm.com") by vger.kernel.org with ESMTP id ; Fri, 3 May 2002 18:28:19 -0400 To: Guest section DW cc: Jeff Dike , linux-kernel@vger.kernel.org, user-mode-linux-devel@lists.sourceforge.net, user-mode-linux-user@lists.sourceforge.net Reply-To: Gerrit Huizenga From: Gerrit Huizenga Subject: Re: UML is now self-hosting! In-Reply-To: Your message of Fri, 03 May 2002 23:51:02 +0200. <20020503215102.GA24653@win.tue.nl> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <6695.1020464883.1@us.ibm.com> Date: Fri, 03 May 2002 15:28:03 -0700 Message-Id: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org In message <20020503215102.GA24653@win.tue.nl>, > : Guest section DW writes: > Congratulations! > > [Reminds me of the good old times 30 years ago - > had a tower of three virtual machines on top of a > real PDP 8/I. Now that you can run UML under UML, > can you run UML under UML under UML?] Fun stuff! With PTX we were doing something very similar near the end of our days with PTX: PTX could run Linux Binaries PTX could run a System 390 emulator (Flex/ES ?) PTX could *almost* run VMWare (might be able to run Win4Lin or Boochs...) PTX could sever as a Citrix (Windows NT) server Picture Windows running in VMWare, talking to an OS/390 emulator on the same hardware. You might have been able to run Linux on 390, as well as VM/SP or whatever... Add on all the other Linux emulators and you had quite a few applications you could run on a single platform, all able to talk to each other. ;-) Customers wanted to run legacy OS/390 apps that they had lost the binaries for, with a fast, modern database (Oracle or DB2) running at native speed, with either Linux or Windows applications. Add UML and you can do development and client support like System 390 can do with Linux and you have an interesting (if a bit perverted ;-) world. Sick and twisted... gerrit