[Qemu-devel] [RFC PATCH 0/5] expose negotiated virtio features in r/o properties

[Roman Kagan <rkagan@virtuozzo.com>]

This series is an attempt to make virtio features acknowledged by the
guest visible as read-only QOM properties.  One potential usecase of
this is debugging; another is when the upper layer needs to do something
only when/if the guest has acknowledged the support for a feature (e.g.
hot-plug a VFIO device once the guest claims VIRTIO_NET_F_STANDBY
support).

Being an RFC, it's incomplete and fails checkpatch, but I'd be intersted
to know if the approach is sane and worthwhile before I invest more time
in it.

Roman Kagan (5):
  qom: preserve get/set presence in aliased properties
  qmp: further consolidate listing of device and object properties
  qdev-properties: add r/o 64bit bitfield property
  virtio: drop DEFINE_VIRTIO_COMMON_FEATURES
  virtio: expose negotiated features in r/o properties

 include/hw/qdev-properties.h    |  9 ++++
 include/hw/virtio/virtio-scsi.h |  2 +-
 include/hw/virtio/virtio.h      | 18 +++----
 hw/char/virtio-serial-bus.c     |  6 ++-
 hw/core/qdev-properties.c       |  9 +++-
 hw/net/virtio-net.c             | 88 +++++++++++++++++--------------
 hw/scsi/virtio-scsi.c           |  4 +-
 hw/virtio/virtio.c              | 11 +++-
 qmp.c                           | 92 ++++++++-------------------------
 qom/object.c                    |  4 +-
 10 files changed, 113 insertions(+), 130 deletions(-)

-- 
2.19.2