[PATCH 0/4] vDPA: API for reporting IOVA range

[Jason Wang]

Hi All:

This series introduces API for reporing IOVA range. This is a must for
userspace to work correclty:

- for the process that uses vhost-vDPA directly to properly allocate
  IOVA
- for VM(qemu), when vIOMMU is not enabled, fail early if GPA is out
  of range
- for VM(qemu), when vIOMMU is enabled, determine a valid guest
  address width

Please review.

Thanks

Jason Wang (4):
  vdpa: introduce config op to get valid iova range
  vdpa_sim: implement get_iova_range bus operation
  vdpa: get_iova_range() is mandatory for device specific DMA
    translation
  vhost: vdpa: report iova range

 drivers/vdpa/vdpa.c              |  4 ++++
 drivers/vdpa/vdpa_sim/vdpa_sim.c | 11 +++++++++++
 drivers/vhost/vdpa.c             | 27 +++++++++++++++++++++++++++
 include/linux/vdpa.h             | 14 ++++++++++++++
 include/uapi/linux/vhost.h       |  4 ++++
 include/uapi/linux/vhost_types.h |  5 +++++
 6 files changed, 65 insertions(+)

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2.20.1