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Viresh Kumar has a prototype of kernel level virtio-msg talking via io-req (via Xen) to a vhost-user based device model (in rust). This was a reuse of work that already existed and Viresh was already familiar with. This is a stepping stone to allow Viresh to focus on the common part of virtio-msg in the kernel. This does not not yet implement a formal work implements the same virtio-msg to virtio-msg-bus interface . That abstraction that Edgar did in the QEMU work. Aligiing this interface with the spec or vise-versa will be worked nextout later. (Viresh has 2 weeks of vacation and 1 week of business travel in September so we are getting this hand off as soon as possible.)
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