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| author | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2020-03-30 17:47:12 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-04-02 14:55:45 -0400 |
| commit | f602d047ac21fc10bc325bf12fe61f4f5c4360d4 (patch) | |
| tree | fcc079b22965a92897a31ac25e7765af0267d8f4 /qobject/json-streamer.c | |
| parent | ddd31732a7379e056749836ff37ff57718083ddb (diff) | |
| download | focaccia-qemu-f602d047ac21fc10bc325bf12fe61f4f5c4360d4.tar.gz focaccia-qemu-f602d047ac21fc10bc325bf12fe61f4f5c4360d4.zip | |
serial: Fix double migration data
After c9808d60281 we have both an object representing the serial-isa
device and a separate object representing the underlying common serial
uart. Both of these have vmsd's associated with them and thus the
migration stream ends up with two copies of the migration data - the
serial-isa includes the vmstate of the core serial. Besides
being wrong, it breaks backwards migration compatibility.
Fix this by removing the dc->vmsd from the core device, so it only
gets migrated by any parent devices including it.
Add a vmstate_serial_mm so that any device that uses serial_mm_init
rather than creating a device still gets migrated.
(That doesn't fix backwards migration for serial_mm_init users,
but does seem to work forwards for ppce500).
Fixes: c9808d60281 ('serial: realize the serial device')
Buglink: https://bugs.launchpad.net/qemu/+bug/1869426
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20200330164712.198282-1-dgilbert@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'qobject/json-streamer.c')
0 files changed, 0 insertions, 0 deletions