On 2/24/26 17:56, Shenwei Wang wrote:

Technically, yes—it's possible to use the virtio mechanism directly without rpmsg.
It’s a bit like talking straight to the IP layer without involving TCP or UDP: doable, but 
at a lower‑level approach.

As for the idea of gpio‑virtio, which could be an optional solution that certain customers 
might prefer. I recall hearing this idea from Mathieu originally, though I’m not sure whether 
he plans to implement it.

gpio-virtio is already upstream in drivers/gpio/gpio-virtio.c