From: Kees Cook <kees@kernel.org>
To: Rasmus Villemoes <ravi@prevas.dk>
Cc: Yury Norov <yury.norov@gmail.com>,
kernel test robot <lkp@intel.com>,
Vineet Gupta <vgupta@kernel.org>,
linux-snps-arc@lists.infradead.org, linux-kernel@vger.kernel.org,
linux-hardening@vger.kernel.org
Subject: Re: [PATCH] arc: Fix __fls() const-foldability via __builtin_clzl()
Date: Tue, 26 Aug 2025 09:56:06 -0700 [thread overview]
Message-ID: <202508260955.2DE50A3FB@keescook> (raw)
In-Reply-To: <87ldn644d0.fsf@prevas.dk>
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
WARNING: multiple messages have this Message-ID (diff)
From: Kees Cook <kees@kernel.org>
To: Rasmus Villemoes <ravi@prevas.dk>
Cc: Yury Norov <yury.norov@gmail.com>,
kernel test robot <lkp@intel.com>,
Vineet Gupta <vgupta@kernel.org>,
linux-snps-arc@lists.infradead.org, linux-kernel@vger.kernel.org,
linux-hardening@vger.kernel.org
Subject: Re: [PATCH] arc: Fix __fls() const-foldability via __builtin_clzl()
Date: Tue, 26 Aug 2025 09:56:06 -0700 [thread overview]
Message-ID: <202508260955.2DE50A3FB@keescook> (raw)
In-Reply-To: <87ldn644d0.fsf@prevas.dk>
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
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next prev parent reply other threads:[~2025-08-26 16:56 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-26 3:43 [PATCH] arc: Fix __fls() const-foldability via __builtin_clzl() Kees Cook
2025-08-26 3:43 ` Kees Cook
2025-08-26 13:08 ` Rasmus Villemoes
2025-08-26 13:08 ` Rasmus Villemoes
2025-08-26 16:56 ` Kees Cook [this message]
2025-08-26 16:56 ` Kees Cook
2025-08-27 1:24 ` Yury Norov
2025-08-27 1:24 ` Yury Norov
2025-08-27 2:13 ` Kees Cook
2025-08-27 2:13 ` Kees Cook
2025-08-27 3:41 ` Yury Norov
2025-08-27 3:41 ` Yury Norov
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