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[libvirt] [PATCH v7 0/3] DEVICE_DELETED event

libvirt has a long-standing bug: when removing the device,
it can request removal but does not know when the
removal completes. Add an event so we can fix this in a robust way.

First patch only adds the event with ID, second patch adds a path field.
Split this way for ease of backport (stable downstreams without QOM
would want to only take the first patch).
Event without fields is still useful as management can use it to
poll device list to figure out which device was removed.

Signed-off-by: Michael S. Tsirkin <mst redhat com>

Changes from v6:
    - make empty event use data: {}, Markus prefers this

Changes from v5:
    - Emit an empty event on unnamed devices in patch 1/3, as suggested by Markus

Changes from v4:
    - Add extra triggers and extra fields as requested by Markus

Changes from v3:
    - Document that we only emit events for devices with
      and ID, as suggested by Markus
Changes from v2:
    - move event toward the end of device_unparent,
      so that parents are reported after their children,
      as suggested by Paolo
Changes from v1:
    - move to device_unparent
    - address comments by Andreas and Eric

Anthony Liguori

Michael S. Tsirkin (2):
  qdev: DEVICE_DELETED event
  qom: pass original path to unparent method

Stefan Hajnoczi (1):
  exec: assert that RAMBlock size is non-zero

 QMP/qmp-events.txt        | 18 ++++++++++++++++++
 exec.c                    |  2 ++
 hw/qdev.c                 | 15 +++++++++++++--
 include/monitor/monitor.h |  1 +
 include/qom/object.h      |  3 ++-
 monitor.c                 |  1 +
 qapi-schema.json          |  4 +++-
 qom/object.c              |  4 +++-
 8 files changed, 43 insertions(+), 5 deletions(-)


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