From owner-freebsd-current@FreeBSD.ORG Thu Aug 17 16:44:09 2006 Return-Path: X-Original-To: current@freebsd.org Delivered-To: freebsd-current@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 5597316A4E5 for ; Thu, 17 Aug 2006 16:44:09 +0000 (UTC) (envelope-from xdivac02@stud.fit.vutbr.cz) Received: from eva.fit.vutbr.cz (eva.fit.vutbr.cz [147.229.10.14]) by mx1.FreeBSD.org (Postfix) with ESMTP id 19FA443D64 for ; Thu, 17 Aug 2006 16:44:00 +0000 (GMT) (envelope-from xdivac02@stud.fit.vutbr.cz) Received: from eva.fit.vutbr.cz (localhost [127.0.0.1]) by eva.fit.vutbr.cz (envelope-from xdivac02@eva.fit.vutbr.cz) (8.13.7/8.13.7) with ESMTP id k7HGhrPU097293 (version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=NO); Thu, 17 Aug 2006 18:43:53 +0200 (CEST) Received: (from xdivac02@localhost) by eva.fit.vutbr.cz (8.13.7/8.13.3/Submit) id k7HGhrB0097292; Thu, 17 Aug 2006 18:43:53 +0200 (CEST) Date: Thu, 17 Aug 2006 18:43:53 +0200 From: Divacky Roman To: Julian Elischer Message-ID: <20060817164352.GB96801@stud.fit.vutbr.cz> References: <20060815212143.G45647@fledge.watson.org> <20060816002328.365a14cd@Magellan.Leidinger.net> <20060816090653.GA820@turion.vk2pj.dyndns.org> <20060816132539.owwerbnw0okwc8wo@netchild.homeip.net> <20060817080533.GA845@turion.vk2pj.dyndns.org> <20060817122534.e57aqlbrwwogg8ko@netchild.homeip.net> <44E4454B.2080606@elischer.org> <20060817133721.h4cbucizcw8wc88k@netchild.homeip.net> <20060817140122.GA90642@stud.fit.vutbr.cz> <44E4881A.3050907@elischer.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <44E4881A.3050907@elischer.org> User-Agent: Mutt/1.4.2i X-Scanned-By: MIMEDefang 2.54 on 147.229.10.14 Cc: Alexander Leidinger , current@freebsd.org, Peter Jeremy Subject: Re: HEADS-UP: starting to commit linuxolator (SoC 2006) changes... X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 17 Aug 2006 16:44:09 -0000 On Thu, Aug 17, 2006 at 08:15:38AM -0700, Julian Elischer wrote: > Divacky Roman wrote: > > >>Anyone with interest in this is free to take care of this, as long as > >>they coordinate with the people which work on the current > >>infrastructure on emulation@ regarding the userland/security stuff and > >>the kernel. Until someone stands up and shows results/progress, this > >>is scheduled to vanish in the future. > >> > >> > > > > > >I personally see this 3 possible ways: > > > >1) leave it as it is (ie. as what will be commited shortly), this means > >runtime > >checking for osrelease sysctl and behaving according to it > > > >2) introduce option LINUX_24 or something like that to make this a compile > >time build > > > >3) remove the 2.4 completely saying that "if you want 2.4 emulation > >downgrade fbsd as well". notice that this is 100% ok because linux itself > >doesnt support 2.4 emulation on 2.6 kernel. > > > > > > I think that would be a great selling point.. especially if two > processes could run the different releases at the same time.. > "even linux needs vmware to do this..". this is not hard to implement but remeber that it causes getpid() to be quite expensive function. and as netchild said - newer glibc doesnt work with 2.4 kernel so unless somone is willing to maintain libc for the old linux_base there wont be any use for this.