On Tue, Aug 30, 2016 at 11:16:25AM +0800, Jason Wang wrote:
>
>
> On 2016年08月30日 10:27, Michael S. Tsirkin wrote:
> > Legacy virtio devices always bypassed an IOMMU, so using them with vfio was
> > never safe.
>
> And it actually won't work since GPA is assumed in the device. So I'm not
> sure t
On 2016年08月30日 10:27, Michael S. Tsirkin wrote:
Legacy virtio devices always bypassed an IOMMU, so using them with vfio was
never safe.
And it actually won't work since GPA is assumed in the device. So I'm
not sure this is must since we should get a IOMMU fault in this case.
This adds a
Legacy virtio devices always bypassed an IOMMU, so using them with vfio was
never safe. This adds a quirk detecting these and disabling VFIO unless the
noiommu mode is used. At the moment, this only applies to virtio-pci devices.
The patch might make sense on stable as well.
Michael S. Tsirkin
