diff options
Diffstat (limited to 'docs/devel')
| -rw-r--r-- | docs/devel/migration.rst | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/docs/devel/migration.rst b/docs/devel/migration.rst index 2401253..3e9656d 100644 --- a/docs/devel/migration.rst +++ b/docs/devel/migration.rst @@ -389,19 +389,13 @@ Each version is associated with a series of fields saved. The ``save_state`` al the state as the newer version. But ``load_state`` sometimes is able to load state from an older version. -You can see that there are several version fields: +You can see that there are two version fields: - ``version_id``: the maximum version_id supported by VMState for that device. - ``minimum_version_id``: the minimum version_id that VMState is able to understand for that device. -- ``minimum_version_id_old``: For devices that were not able to port to vmstate, we can - assign a function that knows how to read this old state. This field is - ignored if there is no ``load_state_old`` handler. - -VMState is able to read versions from minimum_version_id to -version_id. And the function ``load_state_old()`` (if present) is able to -load state from minimum_version_id_old to minimum_version_id. This -function is deprecated and will be removed when no more users are left. + +VMState is able to read versions from minimum_version_id to version_id. There are *_V* forms of many ``VMSTATE_`` macros to load fields for version dependent fields, e.g. |