Re: [PATCH v2 1/1] s390: virtio: let arch accept devices without IOMMU feature

[Cornelia Huck]

On Tue, 16 Jun 2020 09:35:19 +0200
Pierre Morel <pmorel@xxxxxxxxxxxxx> wrote:

> On 2020-06-16 08:55, Christian Borntraeger wrote:
> > 
> > 
> > On 15.06.20 14:39, Pierre Morel 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.
> >>
> >> Signed-off-by: Pierre Morel <pmorel@xxxxxxxxxxxxx>  
> > 
> > 
> > Acked-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>  
> 
> Thanks,
> 
> > 
> > Shouldnt we maybe add a pr_warn if that happens to help the admins to understand what is going on?
> > 
> >   
> 
> Yes, Connie asked for it too, good that you remind it to me, I add it.

Yes, please :)