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author | Peter Maydell <peter.maydell@linaro.org> | 2014-04-03 19:52:28 +0300 |
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committer | Juan Quintela <quintela@redhat.com> | 2014-05-05 22:15:03 +0200 |
commit | 767adce2d9cd397de3418caa16be35ea18d56f22 (patch) | |
tree | 4eade8cd00e2106dadb52e979bbb940304ea1bce /hmp.h | |
parent | 9f8e9895c504149d7048e9fc5eb5cbb34b16e49a (diff) | |
download | qemu-767adce2d9cd397de3418caa16be35ea18d56f22.zip qemu-767adce2d9cd397de3418caa16be35ea18d56f22.tar.gz qemu-767adce2d9cd397de3418caa16be35ea18d56f22.tar.bz2 |
savevm: Ignore minimum_version_id_old if there is no load_state_old
At the moment we require vmstate definitions to set minimum_version_id_old
to the same value as minimum_version_id if they do not provide a
load_state_old handler. Since the load_state_old functionality is
required only for a handful of devices that need to retain migration
compatibility with a pre-vmstate implementation, this means the bulk
of devices have pointless boilerplate. Relax the definition so that
minimum_version_id_old is ignored if there is no load_state_old handler.
Note that under the old scheme we would segfault if the vmstate
specified a minimum_version_id_old that was less than minimum_version_id
but did not provide a load_state_old function, and the incoming state
specified a version number between minimum_version_id_old and
minimum_version_id. Under the new scheme this will just result in
our failing the migration.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Diffstat (limited to 'hmp.h')
0 files changed, 0 insertions, 0 deletions