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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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3
backends/dbus-vmstate.c
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@ -412,7 +412,8 @@ dbus_vmstate_complete(UserCreatable *uc, Error **errp)
return;
}
if (vmstate_register(VMSTATE_IF(self), -1, &dbus_vmstate, self) < 0) {
if (vmstate_register(VMSTATE_IF(self), VMSTATE_INSTANCE_ID_ANY,
&dbus_vmstate, self) < 0) {
error_setg(errp, "Failed to register vmstate");
}
}