[PATCH v3 0/1] s390: virtio: let arch choose to accept devices without IOMMU feature

Pierre Morel
2020-06-17T10:44:15Z

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.

Pierre Morel (1):
s390: virtio: let arch accept devices without IOMMU feature

arch/s390/mm/init.c | 6 ++++++
drivers/virtio/virtio.c | 22 ++++++++++++++++++++++
include/linux/virtio.h | 2 ++
3 files changed, 30 insertions(+)

--
2.25.1

Changelog

to v3:

- add warning
(Connie, Christian)

- add comment
(Connie)

- change hook name
(Halil, Connie)

to v2:

- put the test in virtio_finalize_features()
(Connie)

- put the test inside VIRTIO core
(Jason)

- pass a virtio device as parameter
(Halil)