[PATCH 0/7] drm/nova: replace `transmute` with `zerocopy`

[Pedro Yudi Honda]

Queria ajuda para saber para quem mandar. Esse é o resutlado do
get_maintainers pra pasta que eu estou mexendo:
[image: image.png]
Eu também ia mandar para quem abriu a issue no rust-next que eu usei de
base (Miguel Ojeda <ojeda em kernel.org>). Só envio para todos
indiscriminadamente?

Em qui., 25 de jun. de 2026 às 12:14, David Tadokoro <
davidbtadokoro em ime.usp.br> escreveu:

> Oi Pedro,
>
> Não olhei a fundo o seu patchset, mas pode já enviar para a revisão de
> verdade!
>
> Parabéns pelo trabalho e obrigado por estreiar o Rust no kernel dentro
> disciplina :)
>
> Abraços,
> David
>
> On Mon Jun 22, 2026 at 3:40 PM -03, Pedro Yudi Honda wrote:
> > From: Pedro Yudi Honda <niyudi.honda em usp.br>
> >
> > This series follows the introduction of `zerocopy` to rust-next and
> > replaces `transmute` traits with `zerocopy` traits. These changes are
> > mechanical and don't alter functionality.
> >
> > Specifically, the trait `transmute::FromBytes` is replaced by
> > `zerocopy::FromBytes` and the trait `transmute::AsBytes` is replaced
> > by `zerocopy::IntoBytes`. Additional traits such as
> > `zerocopy::Immutable` and `zerocopy::KnownLayout` are implemented as
> > necessary.
> >
> > This does not replace the trait implemented in newtypes over
> > bindings. Currently, the only solution I can think of is mirroring
> > the bindings into another type and transmuting when necessary, but
> > that does not seem practical. Another issue is a type like
> > `gsp::cmdq::GspMem` that explicitly does not meet the requirements
> > for `FromBytes`, but unsafely implements the trait anyway because it
> > knows all of its uses. Unsafely implementing `zerocopy::FromBytes` is
> > not allowed, and implementing `zerocopy::TryFromBytes` would add
> > unnecessary overhead.
> >
> > Feedback from the maintainers on the direction in these cases would
> > be appreciated.
> >
> > Pedro Yudi Honda (7):
> >   drm/nova: use `zerocopy` in firmware.rs
> >   drm/nova: use `zerocopy` in vbios.rs
> >   drm/nova: use `zerocopy` in booter.rs
> >   drm/nova: use `zerocopy` in fwsec.rs
> >   drm/nova: use `zerocopy` in bootloader.rs
> >   drm/nova: use `zerocopy` in riscv.rs
> >   drm/nova: remove unused trait in commands.rs
> >
> >  drivers/gpu/nova-core/firmware.rs             | 16 ++-----
> >  drivers/gpu/nova-core/firmware/booter.rs      | 26 +++-------
> >  drivers/gpu/nova-core/firmware/fwsec.rs       | 47 +++++--------------
> >  .../nova-core/firmware/fwsec/bootloader.rs    | 16 ++-----
> >  drivers/gpu/nova-core/firmware/riscv.rs       | 10 ++--
> >  drivers/gpu/nova-core/gsp/commands.rs         |  9 +---
> >  drivers/gpu/nova-core/vbios.rs                | 34 ++++----------
> >  7 files changed, 40 insertions(+), 118 deletions(-)
>
>