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

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Message-ID: <ADA086D9-C352-43AD-AD3B-35BCE84265BB@nvidia.com>
Date: Wed, 22 Oct 2025 19:13:40 +0000
From: Joel Fernandes <joelagnelf@...dia.com>
To: Alexandre Courbot <acourbot@...dia.com>
CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"rust-for-linux@...r.kernel.org" <rust-for-linux@...r.kernel.org>,
	"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
	"dakr@...nel.org" <dakr@...nel.org>, 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" <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"
	<joel@...lfernandes.org>, Elle Rhumsaa <elle@...thered-steel.dev>, Daniel
 Almeida <daniel.almeida@...labora.com>, "nouveau@...ts.freedesktop.org"
	<nouveau@...ts.freedesktop.org>, Alexandre Courbot <acourbot@...dia.com>
Subject: Re: [PATCH 7/7] nova-core: mm: Add data structures for page table
 management



> On Oct 22, 2025, at 7:22 AM, Alexandre Courbot <acourbot@...dia.com> wrote:
> 
> 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. :)

Thanks a lot, will do.

- Joel


>