

No, this is fallout from a patchset adding exactly the rust library you suggest to use the DMA library. And despite this only having changes in the rust/kernel tree, the maintainer of kernel/dma showed up to NAK the patch just because he doesn’t like the idea of rust code in the kernel.
Original Patch Set Thread: https://lore.kernel.org/lkml/[email protected]/
I agree that would make sense. I think it’ll come with time.
To others, I’m pretty sure what OP is suggesting is just a generic activity pub server that all the various front ends could use.
I’m pretty sure this is what the original (?) authors of the AP spec intended and that’s why they specified a client-server protocol. My understanding is that (almost?) no one uses that API though, they all just specify their own.