Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161385AbWHDTws (ORCPT ); Fri, 4 Aug 2006 15:52:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1161386AbWHDTws (ORCPT ); Fri, 4 Aug 2006 15:52:48 -0400 Received: from warden-p.diginsite.com ([208.29.163.248]:65532 "HELO warden.diginsite.com") by vger.kernel.org with SMTP id S1161385AbWHDTwr (ORCPT ); Fri, 4 Aug 2006 15:52:47 -0400 Date: Fri, 4 Aug 2006 12:49:13 -0700 (PDT) From: David Lang X-X-Sender: dlang@dlang.diginsite.com To: Jeff Dike cc: Antonio Vargas , Rusty Russell , Andrew Morton , jeremy@xensource.com, greg@kroah.com, zach@vmware.com, linux-kernel@vger.kernel.org, torvalds@osdl.org, hch@infradead.org, jlo@vmware.com, xen-devel@lists.xensource.com, simon@xensource.com, ian.pratt@xensource.com, jeremy@goop.org Subject: Re: A proposal - binary In-Reply-To: <20060804194549.GA5897@ccure.user-mode-linux.org> Message-ID: References: <44D24DD8.1080006@vmware.com> <20060803200136.GB28537@kroah.com> <44D2B678.6060400@xensource.com> <20060803211850.3a01d0cc.akpm@osdl.org> <1154667875.11382.37.camel@localhost.localdomain> <20060803225357.e9ab5de1.akpm@osdl.org> <1154675100.11382.47.camel@localhost.localdomain> <69304d110608041146t44077033j9a10ae6aee19a16d@mail.gmail.com> <20060804194549.GA5897@ccure.user-mode-linux.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1074 Lines: 25 On Fri, 4 Aug 2006, Jeff Dike wrote: > On Fri, Aug 04, 2006 at 12:06:28PM -0700, David Lang wrote: >> I understand this, but for example a UML 2.6.10 kernel will continue to run >> unmodified on top of a 2.6.17 kernel, the ABI used is stable. however if >> you have a 2.6.10 host with a 2.6.10 UML guest and want to run a 2.6.17 >> guest you may (but not nessasarily must) have to upgrade the host to 2.6.17 >> or later. > > Why might you have to do that? take this with a grain of salt, I'm not saying the particular versions I'm listing would require this if your new guest kernel wants to use some new feature (SKAS3, time virtualization, etc) but the older host kernel didn't support some system call nessasary to implement it, you may need to upgrade the host kernel to one that provides the new features. David Lang - 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/