[PATCH v6 0/7] Add virtio-iommu driver

[Jean-Philippe Brucker]

On 11/12/2018 18:31, Christoph Hellwig wrote:
> On Tue, Dec 11, 2018 at 06:20:57PM +0000, Jean-Philippe Brucker wrote:
>> Implement the virtio-iommu driver, following specification v0.9 [1].
>>
>> Only minor changes since v5 [2]. I fixed issues reported by Michael and
>> added tags from Eric and Bharat. Thanks!
>>
>> You can find Linux driver and kvmtool device on v0.9 branches [3],
>> module and x86 support on virtio-iommu/devel. Also tested with Eric's
>> QEMU device [4].
> 
> Just curious, what is the use case for it?

The main use case is assigning a device to guest userspace, using VFIO
both in the host and in the guest (the most cited example being DPDK).
There are others, and I wrote a little more about them last week:
https://www.spinics.net/lists/linux-pci/msg78529.html

Thanks,
Jean