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From: "Alexandre Courbot" <acourbot@nvidia.com>
To: "Eliot Courtney" <ecourtney@nvidia.com>
Cc: "Danilo Krummrich" <dakr@kernel.org>,
	"Lorenzo Stoakes" <ljs@kernel.org>,
	"Vlastimil Babka" <vbabka@kernel.org>,
	"Liam R. Howlett" <liam@infradead.org>,
	"Uladzislau Rezki" <urezki@gmail.com>,
	"Miguel Ojeda" <ojeda@kernel.org>,
	"Boqun Feng" <boqun@kernel.org>, "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>,
	"Daniel Almeida" <daniel.almeida@collabora.com>,
	"Tamir Duberstein" <tamird@kernel.org>,
	"Onur Özkan" <work@onurozkan.dev>,
	"David Airlie" <airlied@gmail.com>,
	"Simona Vetter" <simona@ffwll.ch>,
	"John Hubbard" <jhubbard@nvidia.com>,
	"Alistair Popple" <apopple@nvidia.com>,
	"Timur Tabi" <ttabi@nvidia.com>,
	rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org,
	nova-gpu@lists.linux.dev, dri-devel@lists.freedesktop.org
Subject: Re: [PATCH v2 8/8] gpu: nova-core: add NVKV GSP_INIT schemas
Date: Mon, 14 Sep 2026 13:11:39 +0900	[thread overview]
Message-ID: <DLEQV27IDBCH.16D7K7DXI5ZK8@nvidia.com> (raw)
In-Reply-To: <20260827-b4-nvkv-v2-8-0de9d5c8658c@nvidia.com>

On Thu Aug 27, 2026 at 11:12 PM JST, Eliot Courtney wrote:
<...>
> +impl RegKey {
> +    // Define the Key IDs read/written by GSP.
> +    const REGKEY_NAME_KEY: KeyId = 0x3070;
> +    const REGKEY_VALUE_U32_KEY: KeyId = 0x3071;
> +}
> +
> +impl Encodable for KVVec<RegKey> {
> +    fn encode(&self, encoder: &mut Encoder) -> Result {
> +        for regkey in self {
> +            regkey.encode(encoder)?;
> +        }
> +        Ok(())

Maybe this is just me misunderstanding, but how are the keys
sequentially sent here? Because I don't see any mention of an index, and
`Key::encode` hardcodes `Index::new::<0>()`, so how are these supposed
to be decoded into an array? The `gsp_init_request` test below only adds
one key to its `regkeys`, can we add at least another one to see what
happens and verify that the received content decodes as expected on top
of checking its length?

Also drive-by design question: do we expect to have bidirectional types,
i.e. types that need to go through `nvkv_encode` and `nvkv_decode`?
Because I guess there would be some mechanical overlap in the
definitions for that case. Although maybe we can mitigate that with
another macro. :)

  reply	other threads:[~2026-09-14  4:11 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-27 14:12 [PATCH v2 0/8] gpu: nova-core: add NVKV codec Eliot Courtney
2026-08-27 14:12 ` [PATCH v2 1/8] rust: alloc: add Vec::try_push_init Eliot Courtney
2026-08-27 14:12 ` [PATCH v2 2/8] rust: alloc: add Vec::push_init Eliot Courtney
2026-08-27 14:12 ` [PATCH v2 3/8] rust: alloc: add ArrayVec Eliot Courtney
2026-08-27 14:12 ` [PATCH v2 4/8] gpu: nova-core: add NVKV encoder Eliot Courtney
2026-09-07 15:07   ` Alexandre Courbot
2026-09-14  4:44     ` Eliot Courtney
2026-08-27 14:12 ` [PATCH v2 5/8] gpu: nova-core: add NVKV decoder Eliot Courtney
2026-09-09  0:51   ` Alexandre Courbot
2026-09-09  1:13     ` Eliot Courtney
2026-09-09  4:48       ` Alexandre Courbot
2026-09-14  4:45         ` Eliot Courtney
2026-09-10  7:47   ` Alexandre Courbot
2026-09-14  5:45     ` Eliot Courtney
2026-08-27 14:12 ` [PATCH v2 6/8] gpu: nova-core: add NVKV typed encoding Eliot Courtney
2026-09-10  8:10   ` Alexandre Courbot
2026-09-11  5:17     ` Alexandre Courbot
2026-09-11  5:28       ` Eliot Courtney
2026-09-11 11:18         ` Alexandre Courbot
2026-09-14  4:46           ` Eliot Courtney
2026-08-27 14:12 ` [PATCH v2 7/8] gpu: nova-core: add NVKV typed decoding Eliot Courtney
2026-09-14  3:46   ` Alexandre Courbot
2026-09-14  6:55     ` Eliot Courtney
2026-09-14  7:04       ` John Hubbard
2026-09-14  7:16         ` Eliot Courtney
2026-09-14 12:06           ` Alexandre Courbot
2026-08-27 14:12 ` [PATCH v2 8/8] gpu: nova-core: add NVKV GSP_INIT schemas Eliot Courtney
2026-09-14  4:11   ` Alexandre Courbot [this message]
2026-09-14  5:42     ` Eliot Courtney
2026-09-14 12:12       ` Alexandre Courbot

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