diff options
| author | David Hildenbrand <david@redhat.com> | 2020-06-26 09:22:44 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2020-07-03 07:57:04 -0400 |
| commit | 722a3c783ef4159b297d86e3c1f345360fb2a362 (patch) | |
| tree | b0eb7ab7f0aa6b88bb1f4f1e35b541e5bd707139 /qapi/misc.json | |
| parent | c95b4437da6832f3bef9129de897cc7a8334ea8e (diff) | |
virtio-pci: Send qapi events when the virtio-mem size changes
Let's register the notifier and trigger the qapi event with the right
device id.
MEMORY_DEVICE_SIZE_CHANGE is similar to BALLOON_CHANGE, however on a
memory device level.
Don't unregister the notifier (we neither have finalize() nor unrealize()
for VirtIOPCIProxy, so it's not that simple to do it) - both devices are
expected to vanish at the same time.
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Markus Armbruster <armbru@redhat.com>
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: Eric Blake <eblake@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20200626072248.78761-18-david@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'qapi/misc.json')
| -rw-r--r-- | qapi/misc.json | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/qapi/misc.json b/qapi/misc.json index 65ca3edf32..149c925246 100644 --- a/qapi/misc.json +++ b/qapi/misc.json @@ -1435,6 +1435,31 @@ { 'command': 'query-memory-devices', 'returns': ['MemoryDeviceInfo'] } ## +# @MEMORY_DEVICE_SIZE_CHANGE: +# +# Emitted when the size of a memory device changes. Only emitted for memory +# devices that can actually change the size (e.g., virtio-mem due to guest +# action). +# +# @id: device's ID +# @size: the new size of memory that the device provides +# +# Note: this event is rate-limited. +# +# Since: 5.1 +# +# Example: +# +# <- { "event": "MEMORY_DEVICE_SIZE_CHANGE", +# "data": { "id": "vm0", "size": 1073741824}, +# "timestamp": { "seconds": 1588168529, "microseconds": 201316 } } +# +## +{ 'event': 'MEMORY_DEVICE_SIZE_CHANGE', + 'data': { '*id': 'str', 'size': 'size' } } + + +## # @MEM_UNPLUG_ERROR: # # Emitted when memory hot unplug error occurs. |