[PATCH v7 0/7] Hyper-V Dynamic Memory Protocol driver (hv-balloon 🎈️)

["Maciej S. Szmigiero" <mail@maciej.szmigiero.name>]

From: "Maciej S. Szmigiero" <maciej.szmigiero@oracle.com>

This is a continuation of the v6 of the patch series located here:
https://lore.kernel.org/qemu-devel/cover.1689786474.git.maciej.szmigiero@oracle.com/


Changes from v6:
* Split the hv-balloon driver implementation into multiple files holding
particular data structures and their methods in order to make the driver
easier to understand.

* Split out the PC machine necessary plumbing for the driver and its final
activation into a separate patch.

* Make sure that patches that bring QAPI-related changes also implement these
in the driver in the same patch.

* Add a "query-hv-balloon-status-report" QMP command to query the data from
the last received HV_BALLOON_STATUS_REPORT event.

* Rate limit the HV_BALLOON_STATUS_REPORT QMP event.

* Replace "TBD" in QAPI changes with the actual targeted QEMU version.

* Spelling and formatting fixes in QAPI changes.

* Rebase onto the latest David's patch series.


Based-on: <20230825132149.366064-1-david@redhat.com>
Based-on-Repo-Commit: https://github.com/davidhildenbrand/qemu/tree/virtio-mem-memslots b65df116f8a8


David Hildenbrand (2):
  memory-device: Support empty memory devices
  memory-device: Drop size alignment check

Maciej S. Szmigiero (5):
  Add Hyper-V Dynamic Memory Protocol definitions
  Add a Hyper-V Dynamic Memory Protocol driver (hv-balloon)
  qapi: Add query-memory-devices support to hv-balloon
  qapi: Add HV_BALLOON_STATUS_REPORT event and its QMP query command
  hw/i386/pc: Support hv-balloon

 Kconfig.host                              |    3 +
 hw/core/machine-hmp-cmds.c                |   15 +
 hw/hyperv/Kconfig                         |   10 +
 hw/hyperv/hv-balloon-internal.h           |   33 +
 hw/hyperv/hv-balloon-our_range_memslots.c |  201 +++
 hw/hyperv/hv-balloon-our_range_memslots.h |  110 ++
 hw/hyperv/hv-balloon-page_range_tree.c    |  228 +++
 hw/hyperv/hv-balloon-page_range_tree.h    |  118 ++
 hw/hyperv/hv-balloon.c                    | 1767 +++++++++++++++++++++
 hw/hyperv/meson.build                     |    1 +
 hw/hyperv/trace-events                    |   18 +
 hw/i386/Kconfig                           |    1 +
 hw/i386/pc.c                              |   22 +
 hw/mem/memory-device.c                    |   49 +-
 include/hw/hyperv/dynmem-proto.h          |  423 +++++
 include/hw/hyperv/hv-balloon.h            |   18 +
 include/hw/mem/memory-device.h            |    7 +-
 meson.build                               |   28 +-
 meson_options.txt                         |    2 +
 monitor/monitor.c                         |    1 +
 qapi/machine.json                         |  103 +-
 scripts/meson-buildoptions.sh             |    3 +
 22 files changed, 3148 insertions(+), 13 deletions(-)
 create mode 100644 hw/hyperv/hv-balloon-internal.h
 create mode 100644 hw/hyperv/hv-balloon-our_range_memslots.c
 create mode 100644 hw/hyperv/hv-balloon-our_range_memslots.h
 create mode 100644 hw/hyperv/hv-balloon-page_range_tree.c
 create mode 100644 hw/hyperv/hv-balloon-page_range_tree.h
 create mode 100644 hw/hyperv/hv-balloon.c
 create mode 100644 include/hw/hyperv/dynmem-proto.h
 create mode 100644 include/hw/hyperv/hv-balloon.h