From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44726) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1abSqA-0001db-T1 for qemu-devel@nongnu.org; Thu, 03 Mar 2016 07:58:51 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1abSq5-0001qu-NY for qemu-devel@nongnu.org; Thu, 03 Mar 2016 07:58:50 -0500 Received: from mx1.redhat.com ([209.132.183.28]:46226) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1abSq5-0001qq-IM for qemu-devel@nongnu.org; Thu, 03 Mar 2016 07:58:45 -0500 Date: Thu, 3 Mar 2016 14:58:41 +0200 From: "Michael S. Tsirkin" Message-ID: <20160303145739-mutt-send-email-mst@redhat.com> References: <1456078260-6669-5-git-send-email-davidkiarie4@gmail.com> <56CAEF63.80007@redhat.com> <56D75688.1020500@gmail.com> <20160302231226-mutt-send-email-mst@redhat.com> <20160303114709-mutt-send-email-mst@redhat.com> <56D827BF.10501@redhat.com> <56D828C5.4030803@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Subject: Re: [Qemu-devel] [V6 4/4] hw/pci-host: Emulate AMD IOMMU List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: David Kiarie Cc: Marcel Apfelbaum , Valentine Sinitsyn , Jan Kiszka , QEMU Developers On Thu, Mar 03, 2016 at 03:18:18PM +0300, David Kiarie wrote: > >> Actually we have good news on this front. > >> You can use as many pxb-pcie devices as you want to create extra PCI root > >> buses. > >> Assigning them different IOMMUs would be great. (long term, of course) > >> > > > > Even without pxb-pcie, you can add a pci-bridge to expose a secondary PCI > > bus > > and limit IOMMU scope to that PCI bridge. > > Hmmh, good to know. Will look at that. OK but there's no rush wrt that. What I chiefly would like is getting command line right so we don't need to maintain legacy command line syntax. Support for many iommus can come later, -- MST