linux-kernel - Re: [PATCH v9 4/4] gpu: nova-core: provide a clear error report for unsupported GPUs

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Message-Id: <DE9BX5WH9EK0.28FKC927YDCJP@nvidia.com>
Date: Sat, 15 Nov 2025 23:13:58 +0900
From: "Alexandre Courbot" <acourbot@...dia.com>
To: "John Hubbard" <jhubbard@...dia.com>, "Danilo Krummrich"
 <dakr@...nel.org>
Cc: "Alexandre Courbot" <acourbot@...dia.com>, "Joel Fernandes"
 <joelagnelf@...dia.com>, "Timur Tabi" <ttabi@...dia.com>, "Alistair Popple"
 <apopple@...dia.com>, "Edwin Peer" <epeer@...dia.com>, "Zhi Wang"
 <zhiw@...dia.com>, "David Airlie" <airlied@...il.com>, "Simona Vetter"
 <simona@...ll.ch>, "Bjorn Helgaas" <bhelgaas@...gle.com>, "Miguel Ojeda"
 <ojeda@...nel.org>, "Alex Gaynor" <alex.gaynor@...il.com>, "Boqun Feng"
 <boqun.feng@...il.com>, "Gary Guo" <gary@...yguo.net>,
 Björn Roy Baron <bjorn3_gh@...tonmail.com>, "Benno Lossin"
 <lossin@...nel.org>, "Andreas Hindborg" <a.hindborg@...nel.org>, "Alice
 Ryhl" <aliceryhl@...gle.com>, "Trevor Gross" <tmgross@...ch.edu>,
 <nouveau@...ts.freedesktop.org>, <rust-for-linux@...r.kernel.org>, "LKML"
 <linux-kernel@...r.kernel.org>, "Nouveau"
 <nouveau-bounces@...ts.freedesktop.org>
Subject: Re: [PATCH v9 4/4] gpu: nova-core: provide a clear error report for
 unsupported GPUs

On Sat Nov 15, 2025 at 10:12 AM JST, John Hubbard wrote:
> On 11/14/25 5:09 PM, John Hubbard wrote:
>> Pass in a PCI device to Spec::new(), and provide a Display
>> implementation for boot42, in order to provide a clear, concise report
>> of what happened: the driver read NV_PMC_BOOT42, and found that the GPU
>> is not supported.
>> 
>> For very old GPUs (older than Fermi), the driver still returns ENOTSUPP,
>
> ENODEV, actually, now.

Fixed before applying - I was wondering actually, so the clarification
is welcome. :)