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. -- Pierre Morel IBM Lab Boeblingen
