From 18621987027b1800f315fb9e29967e7b5398ef6f Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Tue, 15 Feb 2022 17:57:05 +0000 Subject: migration: Remove load_state_old and minimum_version_id_old There are no longer any VMStateDescription structs in the tree which use the load_state_old support for custom handling of incoming migration from very old QEMU. Remove the mechanism entirely. This includes removing one stray useless setting of minimum_version_id_old in a VMStateDescription with no load_state_old function, which crept in after the global weeding-out of them in commit 17e313406126. Signed-off-by: Peter Maydell Message-Id: <20220215175705.3846411-1-peter.maydell@linaro.org> Reviewed-by: Dr. David Alan Gilbert Reviewed-by: Francisco Iglesias Reviewed-by: Alistair Francis Signed-off-by: Dr. David Alan Gilbert --- docs/devel/migration.rst | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) (limited to 'docs/devel') 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. -- cgit v1.1