[PATCH v2 0/5] block: update inserted/removed nodes from BlockRAMRegistrar

[Stefan Hajnoczi <stefanha@redhat.com>]

v2:
- Add a tests/functional test case [Kevin]

This patch series fixes a bug in BlockRAMRegistrar: it currently doesn't react
to block graph changes and newly inserted nodes lack RAMBlock information
needed to map I/O buffers. This is important for vdpa-blk devices because they
rely on the ability to map I/O buffers.

Stefan Hajnoczi (5):
  block: add BdrvChildClass->propagate_attach/detach() callbacks
  block: add blk_add_attach/detach_notifier() APIs
  block: rename RAMBlockRegistrar->notifier field
  block: update inserted/removed nodes from BlockRAMRegistrar
  tests/functional: add vdpa-blk blockdev-mirror test

 include/block/block_int-common.h              |  11 ++
 include/system/block-backend-global-state.h   |   9 +
 include/system/block-ram-registrar.h          |   4 +-
 block.c                                       |  56 ++++--
 block/block-backend.c                         |  44 +++++
 block/block-ram-registrar.c                   |  73 +++++++-
 tests/unit/test-block-backend.c               | 164 ++++++++++++++++++
 tests/functional/x86_64/meson.build           |   1 +
 .../functional/x86_64/test_vdpa_blk_mirror.py | 118 +++++++++++++
 9 files changed, 461 insertions(+), 19 deletions(-)
 create mode 100755 tests/functional/x86_64/test_vdpa_blk_mirror.py

-- 
2.51.0