[Qemu-devel] [PATCH v2 0/2] vfio: blacklist legacy virtio devices

[Michael S. Tsirkin]

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

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MST