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migration: Define VMSTATE_INSTANCE_ID_ANY

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Define the new macro VMSTATE_INSTANCE_ID_ANY for callers who wants to
auto-generate the vmstate instance ID.  Previously it was hard coded
as -1 instead of this macro.  It helps to change this default value in
the follow up patches.  No functional change.

Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Peter Xu 2019-10-16 10:29:30 +08:00 • committed by Juan Quintela
parent 8bba004cca
commit 1df2c9a26f
15 changed files with 25 additions and 17 deletions
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2
hw/display/ads7846.c
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@ -154,7 +154,7 @@ static void ads7846_realize(SSISlave *d, Error **errp)
ads7846_int_update(s);
vmstate_register(NULL, -1, &vmstate_ads7846, s);
vmstate_register(NULL, VMSTATE_INSTANCE_ID_ANY, &vmstate_ads7846, s);
}
static void ads7846_class_init(ObjectClass *klass, void *data)