linux-kernel - Re: [PATCH] arc: Fix __fls() const-foldability via __builtin

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <202508260955.2DE50A3FB@keescook>
Date: Tue, 26 Aug 2025 09:56:06 -0700
From: Kees Cook <kees@...nel.org>
To: Rasmus Villemoes <ravi@...vas.dk>
Cc: Yury Norov <yury.norov@...il.com>, kernel test robot <lkp@...el.com>,
	Vineet Gupta <vgupta@...nel.org>,
	linux-snps-arc@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-hardening@...r.kernel.org
Subject: Re: [PATCH] arc: Fix __fls() const-foldability via __builtin_clzl()

On Tue, Aug 26, 2025 at 03:08:59PM +0200, Rasmus Villemoes wrote:
> If __builtin_arc_fls() simply doesn't qualify for attr_const for
> $reason, I think it would be good to have that documented in the commit
> msg. If it does, I think a gcc ticket and link to that would be in order.

I already sent the patch to fix it. :)

https://gcc.gnu.org/pipermail/gcc-patches/2025-August/693273.html

-- 
Kees Cook