On 2024/04/26 0:45, Dmitry Osipenko wrote:
Document virtio-gpu migration specifics.
Suggested-by: Akihiko Odaki
Signed-off-by: Dmitry Osipenko
---
docs/devel/migration/virtio.rst | 7 +++
1 file changed, 7 insertions(+)
diff --git a/docs/devel/migration/virtio.rst b/docs/devel/migration/virtio.rst
index 611a18b82151..67f5fcfed196 100644
--- a/docs/devel/migration/virtio.rst
+++ b/docs/devel/migration/virtio.rst
@@ -113,3 +113,10 @@ virtio_load() returned (like e.g. code depending on
features).
Any extension of the state being migrated should be done in subsections
added to the core for compatibility reasons. If transport or device specific
state is added, core needs to invoke a callback from the new subsection.
+
+VirtIO-GPU migration
+
+VirtIO-GPU doesn't adhere to a common virtio migration scheme. It doesn't
+support save/loading of virtio device state, instead it uses generic device
+migration management on top of the virtio core to save/load GPU state.
+Migration of virgl and rutabaga states not supported.
Sorry for confusion, but I didn't mean to add a subsection to the
documentation. I intended to refer to a terminology of migration data
structure named subsection, which is documented at:
docs/devel/migration/main.rst
A device-specific information is not worth to describe here.
