Hi, > In the graphics buffer sharing use case, how does the other side > determine how to interpret this data? The idea is to have free form properties (name=value, with value being a string) for that kind of metadata. > Shouldn't there be a VIRTIO > device spec for the messaging so compatible implementations can be > written by others? Adding a list of common properties to the spec certainly makes sense, so everybody uses the same names. Adding struct-ed properties for common use cases might be useful too. cheers, Gerd