linux-kernel - Re: [????] Re: [PATCH v3 next 09/10] lib: mul_u64_u64_div

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Message-ID: <20250710113504.583a3721@pumpkin>
Date: Thu, 10 Jul 2025 11:35:04 +0100
From: David Laight <david.laight.linux@...il.com>
To: "Li,Rongqing" <lirongqing@...du.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
 "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
 "u.kleine-koenig@...libre.com" <u.kleine-koenig@...libre.com>, "Nicolas
 Pitre" <npitre@...libre.com>, Oleg Nesterov <oleg@...hat.com>, Peter
 Zijlstra <peterz@...radead.org>, Biju Das <biju.das.jz@...renesas.com>,
 "rostedt@...dmis.org" <rostedt@...dmis.org>
Subject: Re: [????] Re: [PATCH v3 next 09/10] lib: mul_u64_u64_div_u64()
 Optimise the divide code

On Thu, 10 Jul 2025 09:39:51 +0000
"Li,Rongqing" <lirongqing@...du.com> wrote:

...
> Nice work!
> 
> Is it necessary to add an exception test case, such as a case for division result overflowing 64bit?

Not if the code traps :-)

	David