[libvirt] Question about migration max downtime in domXML

Hi All, I've had a few user requests to add migration max downtime to the domain XML. IIRC, this was discussed on the list quite some time ago, but I'm unable to find it in the archives. My recollection is that max downtime is considered a tunable vs config and as such not included in the domXML. But domXML does contain quite a few tunables, so perhaps my memory is incorrect. Does anyone recall the details? I'd be happy to work on this if folks find it acceptable. Regards, Jim