linux-kernel - Re: [PATCH v4 6/7] sample: rust: pci: use `register!` macro

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Message-Id: <DG0WYUS5IQO5.GVMC3NSCJYWT@nvidia.com>
Date: Thu, 29 Jan 2026 17:01:31 +0900
From: "Alexandre Courbot" <acourbot@...dia.com>
To: "Gary Guo" <gary@...yguo.net>
Cc: "Zhi Wang" <zhiw@...dia.com>, "Danilo Krummrich" <dakr@...nel.org>,
 "Alice Ryhl" <aliceryhl@...gle.com>, "Daniel Almeida"
 <daniel.almeida@...labora.com>, "Miguel Ojeda" <ojeda@...nel.org>, "Boqun
 Feng" <boqun.feng@...il.com>, Björn Roy Baron
 <bjorn3_gh@...tonmail.com>, "Benno Lossin" <lossin@...nel.org>, "Andreas
 Hindborg" <a.hindborg@...nel.org>, "Trevor Gross" <tmgross@...ch.edu>,
 "Yury Norov" <yury.norov@...il.com>, "John Hubbard" <jhubbard@...dia.com>,
 "Alistair Popple" <apopple@...dia.com>, "Joel Fernandes"
 <joelagnelf@...dia.com>, "Timur Tabi" <ttabi@...dia.com>, "Edwin Peer"
 <epeer@...dia.com>, "Eliot Courtney" <ecourtney@...dia.com>, "Dirk Behme"
 <dirk.behme@...bosch.com>, "Steven Price" <steven.price@....com>,
 <rust-for-linux@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 6/7] sample: rust: pci: use `register!` macro

On Thu Jan 29, 2026 at 12:46 AM JST, Gary Guo wrote:
> On Wed Jan 28, 2026 at 1:27 PM GMT, Alexandre Courbot wrote:
>> On Wed Jan 28, 2026 at 9:35 PM JST, Zhi Wang wrote:
>>> On Wed, 28 Jan 2026 11:37:32 +0900
>>> Alexandre Courbot <acourbot@...dia.com> wrote:
>>>
>>>> Convert the direct IO accesses to properly defined registers.
>>>> 
>>>
>>> Tested-by: Zhi Wang <zhiw@...dia.com>
>>>
>>> I can see the correct value of the registers read by the sample driver
>>> from the demesg. 
>>
>> Thanks!
>>
>>>
>>> Additionally, Clippy was complaining about unnecssary unsafe blocks and
>>> can be fixed by: (I haven't fully gone through the code, just applied this
>>> for getting rid of the warnnings.)
>>
>> This is because `Bounded::__new` has become unsafe in `rust-next` ; this
>> is not reflected in `driver-core-next` yet, but won't appear in -rc1.
>
> Any reason that you send the patch based on driver-core-next, instead of
> linux-next? You won't have the issue if this is based on linux-next.

driver-core-next is where the patch is going to be merged, so I use that
as the base for the patchset.