Message ID | 1596723782-12798-1-git-send-email-pmorel@linux.ibm.com (mailing list archive) |
---|---|
Headers | show |
Series | s390: virtio-ccw: PV needs VIRTIO I/O device protection | expand |
On 2020-08-06 17:47, Cornelia Huck wrote: > On Thu, 6 Aug 2020 16:23:01 +0200 ... > This does work, and I'm tempted to queue this patch, but I'm wondering > whether we need to give up on a cross-architecture solution already > (especially keeping in mind that ccw is the only transport that is > really architecture-specific). > > I know that we've gone through a few rounds already, and I'm not sure > whether we've been there already, but: > > Could virtio_finalize_features() call an optional > arch_has_restricted_memory_access() function and do the enforcing of > IOMMU_PLATFORM? That would catch all transports, and things should work > once an architecture opts in. That direction also shouldn't be a > problem if virtio is a module. Yes thanks, I rework it in this direction.