linux-kernel - Re: [PATCH v4 1/6] nova-core: bitfield: Move bitfield-specific code from register! into new macro

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Message-ID: <CANiq72mk1-Ew11RB0kfep5BtB8M_5H6o_Rb2MwamrZd-FmzFWA@mail.gmail.com>
Date: Sun, 21 Sep 2025 11:59:05 +0200
From: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To: Greg KH <gregkh@...uxfoundation.org>
Cc: Joel Fernandes <joelagnelf@...dia.com>, linux-kernel@...r.kernel.org, 
	rust-for-linux@...r.kernel.org, dri-devel@...ts.freedesktop.org, 
	dakr@...nel.org, acourbot@...dia.com, Alistair Popple <apopple@...dia.com>, 
	Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, 
	Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, 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>, 
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>, 
	Thomas Zimmermann <tzimmermann@...e.de>, John Hubbard <jhubbard@...dia.com>, Timur Tabi <ttabi@...dia.com>, 
	joel@...lfernandes.org, Elle Rhumsaa <elle@...thered-steel.dev>, 
	Yury Norov <yury.norov@...il.com>, Daniel Almeida <daniel.almeida@...labora.com>, 
	nouveau@...ts.freedesktop.org
Subject: Re: [PATCH v4 1/6] nova-core: bitfield: Move bitfield-specific code
 from register! into new macro

On Sun, Sep 21, 2025 at 11:36 AM Greg KH <gregkh@...uxfoundation.org> wrote:
>
> And where does this allow us to define things like BIT(2) for values?
> (ok, that's kind of not the point of this patch series, but it will come
> up over time...)

We have the `bits` module since 6.17:

    https://rust.docs.kernel.org/kernel/bits/index.html

(Or do you mean something else?)

Cheers,
Miguel