Re: [PATCH 0/1] nova-core: Convert bindings to use zerocopy

["Danilo Krummrich" <dakr@kernel.org>]

On Mon Jun 29, 2026 at 9:09 AM CEST, Alexandre Courbot wrote:
> Since there is no particular urgency to switch from transmute to
> zerocopy, I think it makes sense to merge things in an order that limits
> churn as much as possible.
>
> This means the conversion should probably be done bottom-to-top,
> starting with the bindings, then the types that embed them. For the
> bindings, `#[derive(zerocopy_derive::most_traits)]` should be landing
> soon [1] and I would like us to understand first whether that is
> something we want to use with the bindings; if so, let's wait for it to
> be available (unless there is a good reason to convert quickly) as each
> change to `bindings.rs` is almost 200 LoCs.

Doing another subsequent conversion to most_traits seems trivial. The upside
would be that we could remove the transmute::* types from nova entirely, which
also allows us to switch the DMA code to zerocopy.

No need to go for it with might and main, but a minor inconvinience like the
above might be worth taking, as switching to zerocopy in core infrastructure can
simplify backports.