linux-kernel - Re: [PATCH v6 6/7] rust: time: Add Instant::from

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Message-ID: <0c26ffd8c3f0ee3a1906733fd1b641cc86777c8d.camel@redhat.com>
Date: Mon, 28 Jul 2025 15:07:19 -0400
From: Lyude Paul <lyude@...hat.com>
To: Daniel Almeida <daniel.almeida@...labora.com>
Cc: rust-for-linux@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>, 
 Boqun Feng <boqun.feng@...il.com>, linux-kernel@...r.kernel.org, Andreas
 Hindborg <a.hindborg@...nel.org>,  FUJITA Tomonori
 <fujita.tomonori@...il.com>, Frederic Weisbecker <frederic@...nel.org>,
 Anna-Maria Behnsen	 <anna-maria@...utronix.de>, John Stultz
 <jstultz@...gle.com>, Stephen Boyd	 <sboyd@...nel.org>, Miguel Ojeda
 <ojeda@...nel.org>, Alex Gaynor	 <alex.gaynor@...il.com>, Gary Guo
 <gary@...yguo.net>,  Björn Roy Baron	
 <bjorn3_gh@...tonmail.com>, Benno Lossin <lossin@...nel.org>, Alice Ryhl	
 <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>, Danilo Krummrich	
 <dakr@...nel.org>
Subject: Re: [PATCH v6 6/7] rust: time: Add Instant::from_nanos()

On Fri, 2025-07-25 at 11:12 -0300, Daniel Almeida wrote:
> Since you’re already checking the lower bound, wouldn’t it make sense to check the upper bound as well? 

I don't believe so - KTIME_MAX is i64::MAX, so it's only possible to have i64
values that would underflow - not overflow.

-- 
Cheers,
 Lyude Paul (she/her)
 Software Engineer at Red Hat

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