From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1LQJCZ-0005HJ-2B for qemu-devel@nongnu.org; Fri, 23 Jan 2009 05:23:51 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1LQJCW-0005Fr-Us for qemu-devel@nongnu.org; Fri, 23 Jan 2009 05:23:50 -0500 Received: from [199.232.76.173] (port=36204 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1LQJCW-0005Fi-QQ for qemu-devel@nongnu.org; Fri, 23 Jan 2009 05:23:48 -0500 Received: from mx1.redhat.com ([66.187.233.31]:41335) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1LQJCW-00017h-Gf for qemu-devel@nongnu.org; Fri, 23 Jan 2009 05:23:48 -0500 Received: from int-mx1.corp.redhat.com (int-mx1.corp.redhat.com [172.16.52.254]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id n0NANlFt005654 for ; Fri, 23 Jan 2009 05:23:47 -0500 Received: from file.fab.redhat.com (file.fab.redhat.com [10.33.63.6]) by int-mx1.corp.redhat.com (8.13.1/8.13.1) with ESMTP id n0NANmYf025457 for ; Fri, 23 Jan 2009 05:23:49 -0500 Received: from file.fab.redhat.com (localhost.localdomain [127.0.0.1]) by file.fab.redhat.com (8.13.1/8.13.1) with ESMTP id n0NANlPg001893 for ; Fri, 23 Jan 2009 10:23:47 GMT Received: (from berrange@localhost) by file.fab.redhat.com (8.13.1/8.13.1/Submit) id n0NANkxJ001889 for qemu-devel@nongnu.org; Fri, 23 Jan 2009 10:23:46 GMT Date: Fri, 23 Jan 2009 10:23:46 +0000 From: "Daniel P. Berrange" Subject: Re: [Qemu-devel] [RFC PATCH 0/9] Configurable PCI device addresses Message-ID: <20090123102346.GB571@redhat.com> References: <87ocxzrvqb.fsf@pike.pond.sub.org> <4978D1B0.5040500@codemonkey.ws> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4978D1B0.5040500@codemonkey.ws> Reply-To: "Daniel P. Berrange" , qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org On Thu, Jan 22, 2009 at 02:06:08PM -0600, Anthony Liguori wrote: > Markus Armbruster wrote: > >This patch series makes PCI device addresses configurable for a number > >of devices. For now, I just covered the ones I consider important > >and/or where the change is somewhat invasive. > > > >Why is a configurable PCI device address useful? Currently, QEMU > >assigns a few device addresses statically, and the rest dynamically on > >a first come, first serve basis[*]. If you add or remove a device, > >all devices registering later change address. I'm told a certain > >operating system that can't be named in polite company can get rather > >upset about that. > > > >Making the device address configurable looks like the simplest > >solution to this problem. Only users who really mind changing > >addresses have to deal with the new configuration parameter. > > > > I think we're starting to get to the tipping point where we really just > need to introduce a machine config file. I think we passed that point a long time ago :-) If someone were to make use of every single QEMU command line arg, with many disks & nics we're probably already hitting the ARGV size limit. Daniel -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|