linux-kernel - Re: [PATCH 7/7] nova-core: mm: Add data structures for page table management

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Message-Id: <DDOT8EL6RMYA.3SR2XSN6953HA@nvidia.com>
Date: Wed, 22 Oct 2025 20:21:59 +0900
From: "Alexandre Courbot" <acourbot@...dia.com>
To: "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>
Cc: "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>,
 "Daniel Almeida" <daniel.almeida@...labora.com>,
 <nouveau@...ts.freedesktop.org>
Subject: Re: [PATCH 7/7] nova-core: mm: Add data structures for page table
 management

On Tue Oct 21, 2025 at 3:55 AM JST, Joel Fernandes wrote:
<snip>
> +#![expect(dead_code)]
> +
> +/// Memory size constants
> +pub(crate) const KB: usize = 1024;
> +pub(crate) const MB: usize = KB * 1024;

You can use `kernel::types::SZ_1K` and `SZ_1M` instead.

> +
> +/// Page size: 4 KiB
> +pub(crate) const PAGE_SIZE: usize = 4 * KB;

SZ_4K exists as well. :)