From mboxrd@z Thu Jan  1 00:00:00 1970
From: Avi Kivity <avi@redhat.com>
Subject: Re: [RFC PATCH] vfio: VFIO PCI driver for Qemu
Date: Wed, 25 Jul 2012 22:30:59 +0300
Message-ID: <50104973.3090302@redhat.com>
References: <20120725165948.17260.82862.stgit@bling.home>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit
Cc: aik@ozlabs.ru, qemu-devel@nongnu.org, kvm@vger.kernel.org
To: Alex Williamson <alex.williamson@redhat.com>
Return-path: <qemu-devel-bounces+gceq-qemu-devel=gmane.org@nongnu.org>
In-Reply-To: <20120725165948.17260.82862.stgit@bling.home>
List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.nongnu.org/archive/html/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
Errors-To: qemu-devel-bounces+gceq-qemu-devel=gmane.org@nongnu.org
Sender: qemu-devel-bounces+gceq-qemu-devel=gmane.org@nongnu.org
List-Id: kvm.vger.kernel.org

On 07/25/2012 08:03 PM, Alex Williamson wrote:
> This adds PCI based device assignment to Qemu using the Linux VFIO
> userspace driver interface.  After setting up VFIO device access,
> devices can be added to Qemu guests using the vfio-pci device
> option:
>
>  -device vfio-pci,host=1:10.1,id=net0
>
>

Let's use the same syntax as for kvm device assignment.  Then we can
fall back on kvm when vfio is not available.  We can also have an
optional parameter kernel-driver to explicitly select vfio or kvm.

-- 
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.