Legacy virtio devices always bypassed an IOMMU, so using them with vfio was never safe. This adds a quirk detecting these and disabling VFIO unless the noiommu mode is used. At the moment, this only applies to virtio-pci devices. The patch might make sense on stable as well. Michael S. Tsirkin (2): vfio: report group noiommu status vfio: add virtio pci quirk drivers/vfio/pci/vfio_pci_private.h | 1 + include/linux/vfio.h | 2 + drivers/vfio/pci/vfio_pci.c | 14 ++++ drivers/vfio/pci/vfio_pci_virtio.c | 140 ++++++++++++++++++++++++++++++++++++ drivers/vfio/vfio.c | 12 ++++ drivers/vfio/pci/Makefile | 1 + 6 files changed, 170 insertions(+) create mode 100644 drivers/vfio/pci/vfio_pci_virtio.c -- MST -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
