From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pierre Morel Subject: [PATCH v3 0/1] s390: virtio: let arch choose to accept devices without IOMMU feature Date: Wed, 17 Jun 2020 12:43:56 +0200 Message-ID: <1592390637-17441-1-git-send-email-pmorel@linux.ibm.com> Return-path: Sender: linux-kernel-owner@vger.kernel.org To: linux-kernel@vger.kernel.org Cc: pasic@linux.ibm.com, borntraeger@de.ibm.com, frankja@linux.ibm.com, mst@redhat.com, jasowang@redhat.com, cohuck@redhat.com, kvm@vger.kernel.org, linux-s390@vger.kernel.org, virtualization@lists.linux-foundation.org, thomas.lendacky@amd.com, david@gibson.dropbear.id.au, linuxram@us.ibm.com, heiko.carstens@de.ibm.com, gor@linux.ibm.com List-Id: virtualization@lists.linuxfoundation.org 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)