Re: [PATCH v3 1/1] s390: virtio: let arch accept devices without IOMMU feature

Pierre Morel
2020-06-29T18:51:18Z

On 2020-06-18 00:29, Halil Pasic wrote:
> On Wed, 17 Jun 2020 12:43:57 +0200
> Pierre Morel <pmorel@linux.ibm.com> wrote:
>
>> An architecture protecting the guest memory against unauthorized host
>> access may want to enforce VIRTIO I/O device protection through the
>> use of VIRTIO_F_IOMMU_PLATFORM.
>>
>> Let's give a chance to the architecture to accept or not devices
>> without VIRTIO_F_IOMMU_PLATFORM.
>>
> [..]
>
>
> I'm still not really satisfied with your commit message, furthermore
> I did some thinking about the abstraction you introduce here. I will
> give a short analysis of that, but first things first. Your patch does
> the job of preventing calamity, and the details can be changed any time,
> thus:
>
> Acked-by: Halil Pasic <pasic@linux.ibm.com>

Thanks,

Connie already answered the other points you raised and I have nothing
to add on it.

Regards,
Pierre

--
Pierre Morel
IBM Lab Boeblingen