From: Alexandre Courbot <acourbot@nvidia.com>
To: "Miguel Ojeda" <ojeda@kernel.org>,
"Boqun Feng" <boqun.feng@gmail.com>,
"Gary Guo" <gary@garyguo.net>,
"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
"Benno Lossin" <lossin@kernel.org>,
"Andreas Hindborg" <a.hindborg@kernel.org>,
"Alice Ryhl" <aliceryhl@google.com>,
"Trevor Gross" <tmgross@umich.edu>,
"Danilo Krummrich" <dakr@kernel.org>
Cc: John Hubbard <jhubbard@nvidia.com>,
Alistair Popple <apopple@nvidia.com>,
Joel Fernandes <joelagnelf@nvidia.com>,
Timur Tabi <ttabi@nvidia.com>, Edwin Peer <epeer@nvidia.com>,
Eliot Courtney <ecourtney@nvidia.com>,
rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org,
Alexandre Courbot <acourbot@nvidia.com>
Subject: [PATCH v4 0/2] rust: transmute: implement FromBytes and AsBytes for inhabited ZSTs
Date: Mon, 15 Dec 2025 14:49:08 +0900 [thread overview]
Message-ID: <20251215-transmute_unit-v4-0-477d71ec7c23@nvidia.com> (raw)
This is useful in Nova's GSP message handling, as some messages are
empty and we currently need to explicitly use an empty structure for
them.
If accepted, I would like to merge it through `drm-rust-next` so Nova
code can start using this feature quickly.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
---
Changes in v4:
- Improve safety comment to mention lack of invariants.
- Link to v3: https://patch.msgid.link/20251209-transmute_unit-v3-0-819fe584ba06@nvidia.com
Changes in v3:
- Use better safety statement. (thanks Gary!)
- Also add `PhantomData`. (thanks Gary!)
- Link to v2: https://patch.msgid.link/20251208-transmute_unit-v2-0-aa17a6848afb@nvidia.com
Changes in v2:
- Make use of new feature in Nova.
- Link to v1: https://patch.msgid.link/20251208-transmute_unit-v1-1-680c7386b5d9@nvidia.com
---
Alexandre Courbot (2):
rust: transmute: implement FromBytes and AsBytes for inhabited ZSTs
gpu: nova-core: gsp: use () as message type for GspInitDone message
drivers/gpu/nova-core/gsp/commands.rs | 6 +++---
rust/kernel/transmute.rs | 8 ++++++++
2 files changed, 11 insertions(+), 3 deletions(-)
---
base-commit: 8f0b4cce4481fb22653697cced8d0d04027cb1e8
change-id: 20251208-transmute_unit-78ab58ba9e6e
Best regards,
--
Alexandre Courbot <acourbot@nvidia.com>
next reply other threads:[~2025-12-15 5:49 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-15 5:49 Alexandre Courbot [this message]
2025-12-15 5:49 ` [PATCH v4 1/2] rust: transmute: implement FromBytes and AsBytes for inhabited ZSTs Alexandre Courbot
2025-12-15 7:45 ` Benno Lossin
2025-12-15 11:31 ` Gary Guo
2025-12-15 5:49 ` [PATCH v4 2/2] gpu: nova-core: gsp: use () as message type for GspInitDone message Alexandre Courbot
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