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From: Dmitry Antipov <dmantipov@yandex.ru>
To: Alexey Dobriyan <adobriyan@gmail.com>, akpm@linux-foundation.org
Cc: linux-kernel@vger.kernel.org, andriy.shevchenko@intel.com
Subject: Re: [PATCH -mm] kstrtox: delete division from inner parsing loop
Date: Fri, 3 Jul 2026 13:34:16 +0300	[thread overview]
Message-ID: <7d763f00-b394-4467-b4cd-5b0d994d794f@yandex.ru> (raw)
In-Reply-To: <20260703102550.501490-1-adobriyan@gmail.com>

On 7/3/26 1:25 PM, Alexey Dobriyan wrote:

> Overflow conditions can be checked on the fly resulting in at most
> 2 very predictable branches and zero division instructions:
> 
> 	_parse_integer_limit:
> 			...
> 		mov rax, rdx
> 		mul rsi
> 		seto bl
> 		add rax, rcx
> 		mov rdx, rax
> 		setb al

Trust my word, there is a huge world beyond x86.

Dmitry


      reply	other threads:[~2026-07-03 10:44 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-03 10:25 Alexey Dobriyan
2026-07-03 10:34 ` Dmitry Antipov [this message]

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