From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [140.186.70.92] (port=46973 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OOW3c-0005uB-Ma for qemu-devel@nongnu.org; Tue, 15 Jun 2010 09:20:01 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1OOW3b-0004vZ-Dr for qemu-devel@nongnu.org; Tue, 15 Jun 2010 09:20:00 -0400 Received: from mail.codesourcery.com ([38.113.113.100]:41587) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1OOW3b-0004vM-6H for qemu-devel@nongnu.org; Tue, 15 Jun 2010 09:19:59 -0400 From: Paul Brook Subject: Re: [Qemu-devel] [RFC PATCH 1/5] qdev: Create qdev_get_dev_path() Date: Tue, 15 Jun 2010 14:19:53 +0100 References: <20100614054923.879.33717.stgit@localhost.localdomain> <4C176B22.30201@siemens.com> In-Reply-To: MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <201006151419.54215.paul@codesourcery.com> List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Markus Armbruster Cc: "chrisw@redhat.com" , "kvm@vger.kernel.org" , Jan Kiszka , "qemu-devel@nongnu.org" , Alex Williamson , "avi@redhat.com" , "kraxel@redhat.com" > > Every hotplug-capable bus must have a proper addressing scheme, I think > > this is a reasonable and achievable requirement. Then we don't need > > instance numbers for those buses. > > What about USB? USB has useful device addresses (physical ports). These aren't used by most of the higher-level protocols (logically USB is a flat bus structure), but the physically tree topology is still there if you look hard enough. Paul