[RFC 0/5] Protection information pass-through for block devices

[Dmitry Tihov]

This patch set allows using End-to-End Data Protection in NVMe subsystem
with integrity capable host devices as the NVMe namespaces backend.
The patch series is based on io-uring kernel interface feature not merged
to kernel upstream yet:
https://lore.kernel.org/linux-block/20220920144618.1111138-1-a.buev@yadro.com/

The main advantage of this approach is that it allows using the
same protection information enabled disks in multiple VMs
concurrently. This may be useful in cluster setups.

Please let me know what do you think, are this kind of changes appropriate
for QEMU upstream, what should be changed, etc.

Dmitry Tihov (5):
  docs/nvme: add new feature summary
  block: add transfer of protection information
  hw/nvme: add protection information pass parameter
  hw/nvme: implement pi pass read/write/wrz commands
  hw/nvme: extend pi pass capable commands

 block/file-posix.c           | 130 ++++++++++++-
 block/io_uring.c             | 109 ++++++++++-
 docs/system/devices/nvme.rst |  15 ++
 hw/nvme/ctrl.c               | 361 ++++++++++++++++++++++++++++++++---
 hw/nvme/dif.c                | 303 +++++++++++++++++++++++++++++
 hw/nvme/dif.h                |  18 ++
 hw/nvme/ns.c                 |  59 +++++-
 hw/nvme/nvme.h               |   2 +
 hw/nvme/trace-events         |   6 +
 include/block/block-common.h |   2 +
 include/block/raw-aio.h      |   3 +-
 include/qemu/iov.h           |   6 +
 util/iov.c                   |  24 +++
 13 files changed, 992 insertions(+), 46 deletions(-)

-- 
2.38.1