As a rust developer, I’m biased, but I think it might be a great thing, if done properly. I’ve also done some kernel dev a while back and it’s full of kernel-specific macros and conventions and boilerplate code. It would at least improve readability and reduce some boilerplate as well as improve on some common security bugs. But seeing as how different C is in kernel context to regular application, this may be the same for Rust, in which case I hope the devs know what they’re doing, because it can easily get out of hand.