From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:58321) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZyFKn-00026z-8J for qemu-devel@nongnu.org; Mon, 16 Nov 2015 03:40:22 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZyFKk-0001M8-2Q for qemu-devel@nongnu.org; Mon, 16 Nov 2015 03:40:21 -0500 Received: from mx1.redhat.com ([209.132.183.28]:48829) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZyFKj-0001M4-T0 for qemu-devel@nongnu.org; Mon, 16 Nov 2015 03:40:17 -0500 References: <1447601946-31248-1-git-send-email-marcel@redhat.com> From: Paolo Bonzini Message-ID: <5649966C.7070702@redhat.com> Date: Mon, 16 Nov 2015 09:40:12 +0100 MIME-Version: 1.0 In-Reply-To: <1447601946-31248-1-git-send-email-marcel@redhat.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH V2 0/4] hw/pcie: Multi-root support for Q35 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Marcel Apfelbaum , qemu-devel@nongnu.org Cc: imammedo@redhat.com, rth@twiddle.net, kraxel@redhat.com, ehabkost@redhat.com, mst@redhat.com On 15/11/2015 16:39, Marcel Apfelbaum wrote: > Addressed Gerd Hoffmann comments: > - Added x-enable-internal-bridge compat property to keep the PCI > bridge for older machine to avoid breaking migration. This will break PXB command lines written for "-M pc" in QEMU <= 2.5. Technically there's no prohibition against doing so, but we've never done it; I'm not sure why we should start doing so now. Can we have two devices, on for a PCI expander bridge and one for a PCIe expander bridge? Paolo