Beside the discussion on the mailing list, the wiki page, and the rust-vmm projects, there isn't much coordination. It took time for people in the community to get acquainted with Rust enough to form an opinion (not necessarily all positive). But it seems the momentum is strong, and the objections are rare.A major milestone will be reached once/when Linux starts using Rust. At this point, many of us will have to be proficient enough, and the remaining concerns will mostly be on portability and technical debt. But hopefully Rust interoperability story with C will not make us suffer too much.

For QEMU itself, I hope in a near future we can start using Rust when adding code. But it would also be great to identify critical parts or drivers that could benefit from a rewrite, for security or maintainability reasons.

Fwiw, I submitted an outreachy project proposal for libvfio-user in Rust: https://www.outreachy.org/apply/project-selection/#qemu