On 10/16/2013 09:03 AM, James Hubbard wrote:
> On Wed, Oct 16, 2013 at 7:31 AM, Cole Robinson <crobinso@redhat.com

> <mailto:crobinso@redhat.com>> wrote:
>
>     Sounds like your system doesn't have an iommu or it isn't enabled, confirm
>     with the 'verify' steps here:
>
>     http://www.linux-kvm.org/page/How_to_assign_devices_with_VT-d_in_KVM#Assigning_device_to_guest
>
>     > BTW, this is not generating an error message in virt-manager like it was
>     prior
>     > to updating to virt-preview.
>     >
>
>     Make sure you restart virt-manager after updating. If after that you can see
>     the error in the --debug output but not from the UI, please file a bug and
>     make sure to mention your virt-manager version.
>
>
> The setting intel_iommu is enabled.  I was able to get the Intel i350 cards
> setup with SR-IOV.  The DMAR and IOMMU items show up fine.
>

Are there any dmesg messages about vfio? The module was autoloaded for me on
f19, that lack of autoload coupled with the libvirt error make me think
something is weird with your hardware, or at least the kernel thinks so.

Regardless, please file a libvirt bug so we can track this.