From owner-freebsd-questions@FreeBSD.ORG Sat May 23 01:10:06 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 1F9D5106564A for ; Sat, 23 May 2009 01:10:06 +0000 (UTC) (envelope-from freebsd-questions@m.gmane.org) Received: from ciao.gmane.org (main.gmane.org [80.91.229.2]) by mx1.freebsd.org (Postfix) with ESMTP id 9825D8FC16 for ; Sat, 23 May 2009 01:10:04 +0000 (UTC) (envelope-from freebsd-questions@m.gmane.org) Received: from root by ciao.gmane.org with local (Exim 4.43) id 1M7fkQ-0000Ny-Kz for freebsd-questions@freebsd.org; Sat, 23 May 2009 01:10:02 +0000 Received: from pd95d6d08.dip.t-dialin.net ([217.93.109.8]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sat, 23 May 2009 01:10:02 +0000 Received: from js by pd95d6d08.dip.t-dialin.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sat, 23 May 2009 01:10:02 +0000 X-Injected-Via-Gmane: http://gmane.org/ To: freebsd-questions@freebsd.org From: Julian Stecklina Followup-To: poster Date: Fri, 22 May 2009 14:57:54 +0200 Lines: 32 Message-ID: <87pre1nvl9.fsf@tabernacle.lan> References: <20090521215221.GA98253@server.vk2pj.dyndns.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: pd95d6d08.dip.t-dialin.net X-Archive: encrypt User-Agent: Gnus/5.101 (Gnus v5.10.10) Cancel-Lock: sha1:TLV86IYUCh1ei2cmHzSb5cDhFDg= Sender: news Cc: freebsd-xen@freebsd.org, freebsd-current@freebsd.org, freebsd-questions@freebsd.org Subject: Re: My FreeBSD-current/Xen install notes X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 23 May 2009 01:10:06 -0000 Peter Jeremy writes: > On 2009-May-20 08:30:09 +0800, Adrian Chadd wrote: >>Xen also lets you write "other" OSes without needing to care about the >>hardware. One of my friends bootstrapped a toy OS of his inside Xen. >>He can then run it on any and all Xen boxes, unmodified, regardless of >>the underlying hardware. That really hasn't been exploited to its full >>potential though. > > This isn't a particularly new idea: The 'CMS' part of IBM VM/CMS was a > hypervisor-aware OS that couldn't run on bare metal. > > Relying on the hypervisor for some "traditional" OS services offers > plenty of scope for interesting developments. One area would be in > University Operating Systems courses - it would again be possible to > offer practical coursework on operating systems that are comprehendable > in their entirety (ala V6 and Minix). You can use microkernels[1] for almost the same thing. It's what we do at Technische Universität Dresden. Regards, -- Julian Stecklina The day Microsoft makes something that doesn't suck is probably the day they start making vacuum cleaners - Ernst Jan Plugge Footnotes: [1] There is a sexy new microhypervisor to be released Real Soon Now(tm) too: http://eurosys09dw.systems.ethz.ch/steinberg.pdf