[0/3] qapi/vfio: Add VFIO device migration state change QAPI event

Message

Avihai Horon April 30, 2024, 5:16 a.m. UTC

Hello,

This series adds a new QAPI event for VFIO device migration state 
change. This event will be emitted when a VFIO device changes its
state, for example, during migration or when stopping/starting the
guest.

This event can be used by management applications to get updates on the
current state of the VFIO device for their own purposes.

A new per VFIO device capability, "migration-events", is added so events
can be enabled only for the required devices. It is disabled by default.

Feedback/comments are appreciated,

Thanks.

Avihai Horon (3):
  qapi/vfio: Add VFIO device migration state change QAPI event
  vfio/migration: Emit VFIO device migration state change QAPI event
  vfio/migration: Don't emit STOP_COPY state change event twice

 MAINTAINERS                   |  1 +
 qapi/qapi-schema.json         |  1 +
 qapi/vfio.json                | 61 +++++++++++++++++++++++++++++++++++
 include/hw/vfio/vfio-common.h |  1 +
 hw/vfio/migration.c           | 55 ++++++++++++++++++++++++++++---
 hw/vfio/pci.c                 |  2 ++
 qapi/meson.build              |  1 +
 7 files changed, 118 insertions(+), 4 deletions(-)
 create mode 100644 qapi/vfio.json