From owner-freebsd-questions@FreeBSD.ORG Sun Oct 28 03:07:58 2007 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 477F916A419 for ; Sun, 28 Oct 2007 03:07:58 +0000 (UTC) (envelope-from keramida@ceid.upatras.gr) Received: from igloo.linux.gr (igloo.linux.gr [62.1.205.36]) by mx1.freebsd.org (Postfix) with ESMTP id B029E13C481 for ; Sun, 28 Oct 2007 03:07:57 +0000 (UTC) (envelope-from keramida@ceid.upatras.gr) Received: from kobe.laptop (dialup98.ach.sch.gr [81.186.70.98]) (authenticated bits=128) by igloo.linux.gr (8.14.1/8.14.1/Debian-9) with ESMTP id l9S36x4o021180 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Sun, 28 Oct 2007 05:07:41 +0200 Received: from kobe.laptop (kobe.laptop [127.0.0.1]) by kobe.laptop (8.14.1/8.14.1) with ESMTP id l9S36bNb003888; Sun, 28 Oct 2007 05:06:52 +0200 (EET) (envelope-from keramida@ceid.upatras.gr) Received: (from keramida@localhost) by kobe.laptop (8.14.1/8.14.1/Submit) id l9S36VxG003887; Sun, 28 Oct 2007 05:06:31 +0200 (EET) (envelope-from keramida@ceid.upatras.gr) Date: Sun, 28 Oct 2007 05:06:31 +0200 From: Giorgos Keramidas To: mv Message-ID: <20071028030631.GA3856@kobe.laptop> References: <4722BBC8.9060902@gmail.com> <2fd864e0710262134u6ea0fb97offb687fe68e4e420@mail.gmail.com> <20071028003344.GA2491@kobe.laptop> <200710272149.47052.mrkvrg@acm.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200710272149.47052.mrkvrg@acm.org> X-Hellug-MailScanner: Found to be clean X-Hellug-MailScanner-SpamCheck: not spam, SpamAssassin (not cached, score=-3.923, required 5, autolearn=not spam, ALL_TRUSTED -1.80, AWL 0.48, BAYES_00 -2.60) X-Hellug-MailScanner-From: keramida@ceid.upatras.gr X-Spam-Status: No Cc: freebsd-questions@freebsd.org Subject: Re: evil idea 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: Sun, 28 Oct 2007 03:07:58 -0000 On 2007-10-27 21:49, mv wrote: > On 10/26/07, Aryeh M. Friedman wrote: > > I am running amd64 8-CURRENT and there are a few i386 only ports that I > > absolutely must have installed and at the same time since I have > > 4 GB of RAM all kinds of bizarreness is created if I "downgrade" > > to i386. So here is the idea: use qemu to create a virtual > > version of my machine (with less then 2GB or RAM) and install > > i386 8-CURRENT on it (I want to use -CURRENT for all my installs) > > On Sat, 27 October 2007 20:33:44 Giorgos Keramidas wrote: > > I don't think Aryeh wants to "install i386 over his current amd64". > > > > What he seems to be asking is if he can run *two* versions, one of > > them as a virtualized host under qemu. That should work, AFAIK. > > Would installing Freebsd i386 within a jail on an amd64 host solve his > problem? I don't know if that would 'solve' the problem, but one major difference from qemu is that a jailed host runs the same kernel with the master. This means that i386 programs do not run in 'native' i386 mode, but in emulated mode. The FreeBSD kernel already includes support for running i386 programs in emulated mode, but since I haven't done this I am not sure how feasible or useful it is.