linux-kernel - Re: [PATCH v3 0/5] gpu: nova-core: gsp: fix command queue ring buffer bugs

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Message-Id: <DG7PAWIOZYWA.1S53TGBSPWGVW@nvidia.com>
Date: Fri, 06 Feb 2026 16:29:46 +0900
From: "Alexandre Courbot" <acourbot@...dia.com>
To: "Eliot Courtney" <ecourtney@...dia.com>
Cc: "Danilo Krummrich" <dakr@...nel.org>, "Alice Ryhl"
 <aliceryhl@...gle.com>, "David Airlie" <airlied@...il.com>, "Simona Vetter"
 <simona@...ll.ch>, "Alistair Popple" <apopple@...dia.com>,
 <nouveau@...ts.freedesktop.org>, <rust-for-linux@...r.kernel.org>,
 <dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 0/5] gpu: nova-core: gsp: fix command queue ring
 buffer bugs

On Thu Jan 29, 2026 at 4:44 PM JST, Eliot Courtney wrote:
> This series fixes a few bugs in the GSP command queue ring buffer
> implementation in nova-core and also clarifies some of the comments.
>
> The ring buffer uses read and write pointers (rx/tx) to track which areas
> are available for the CPU vs the GSP to read/write into.
>
> In the ring buffers there were some indexing issues which could end up
> causing panics, so I fixed those and added more rigorous proofs of
> correctness in the panic comments.
>
> Signed-off-by: Eliot Courtney <ecourtney@...dia.com>

Staged the series for pushing into `drm-rust-next` as soon as it
reopens. Thanks for these critical fixes!