From: "Alexandre Courbot" <acourbot@nvidia.com>
To: "Miguel Ojeda" <miguel.ojeda.sandonis@gmail.com>
Cc: "John Hubbard" <jhubbard@nvidia.com>,
"Danilo Krummrich" <dakr@kernel.org>,
"Joel Fernandes" <joelagnelf@nvidia.com>,
"Timur Tabi" <ttabi@nvidia.com>,
"Alistair Popple" <apopple@nvidia.com>,
"Eliot Courtney" <ecourtney@nvidia.com>,
"Shashank Sharma" <shashanks@nvidia.com>,
"Zhi Wang" <zhiw@nvidia.com>, "David Airlie" <airlied@gmail.com>,
"Simona Vetter" <simona@ffwll.ch>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Miguel Ojeda" <ojeda@kernel.org>,
"Alex Gaynor" <alex.gaynor@gmail.com>,
"Boqun Feng" <boqun.feng@gmail.com>,
"Gary Guo" <gary@garyguo.net>,
"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
"Benno Lossin" <lossin@kernel.org>,
"Andreas Hindborg" <a.hindborg@kernel.org>,
"Alice Ryhl" <aliceryhl@google.com>,
"Trevor Gross" <tmgross@umich.edu>,
rust-for-linux@vger.kernel.org,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/2] rust: sizes: add u64 variants of SZ_* constants
Date: Wed, 11 Mar 2026 17:01:12 +0900 [thread overview]
Message-ID: <DGZSMY2HLWFF.UYKDAN55CP50@nvidia.com> (raw)
In-Reply-To: <CANiq72kiiKkK0Q5w=UKNsPXvuuHMASpRJ7KAMy=2908n_u-DUA@mail.gmail.com>
On Tue Mar 10, 2026 at 10:51 PM JST, Miguel Ojeda wrote:
> On Tue, Mar 10, 2026 at 3:31 AM John Hubbard <jhubbard@nvidia.com> wrote:
>>
>> +// CAST: every SZ_* value below fits in u64, so `as u64` is always lossless.
>
> Nit:
>
> // CAST: Every `SZ_*` value below fits in `u64`, so `as u64` is
> always lossless.
>
> One alternative could be something like `sizes::u64::SZ_1M`, but if
> you expect to mix `usize` and `u64` often then it may not be great.
How about an extension trait for integer types with all the `SZ_*`
defined as constants?
That would allow easy implementation for more integer types, like
`Bounded`. Because "64 bit" address spaces are often actually less than
that, and we might want to work with `Bounded` for them.
next prev parent reply other threads:[~2026-03-11 8:01 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-10 2:31 [PATCH 0/2] rust, nova-core: use u64 variants of SZ_* constants John Hubbard
2026-03-10 2:31 ` [PATCH 1/2] rust: sizes: add " John Hubbard
2026-03-10 13:51 ` Miguel Ojeda
2026-03-10 16:42 ` Daniel Almeida
2026-03-10 16:53 ` Danilo Krummrich
2026-03-10 20:20 ` Miguel Ojeda
2026-03-10 20:47 ` Danilo Krummrich
2026-03-10 20:55 ` Danilo Krummrich
2026-03-10 22:08 ` Miguel Ojeda
2026-03-10 22:13 ` John Hubbard
2026-03-10 22:19 ` John Hubbard
2026-03-11 8:01 ` Alexandre Courbot [this message]
2026-03-12 0:21 ` John Hubbard
2026-03-10 16:59 ` Danilo Krummrich
2026-03-10 2:31 ` [PATCH 2/2] gpu: nova-core: use SZ_*_U64 constants from kernel::sizes John Hubbard
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