From: Kees Cook <keescook@chromium.org>
To: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>,
Will Deacon <will@kernel.org>, Boqun Feng <boqun.feng@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
Jakub Kicinski <kuba@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Arnd Bergmann <arnd@arndb.de>,
Andrew Morton <akpm@linux-foundation.org>,
"David S. Miller" <davem@davemloft.net>,
David Ahern <dsahern@kernel.org>,
Eric Dumazet <edumazet@google.com>,
Paolo Abeni <pabeni@redhat.com>,
"Paul E. McKenney" <paulmck@kernel.org>,
Uros Bizjak <ubizjak@gmail.com>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-arch@vger.kernel.org,
netdev@vger.kernel.org, linux-hardening@vger.kernel.org
Subject: Re: [PATCH 1/4] locking/atomic/x86: Silence intentional wrapping addition
Date: Thu, 25 Apr 2024 10:19:24 -0700 [thread overview]
Message-ID: <202404251018.C12E9F23@keescook> (raw)
In-Reply-To: <ZiotNVLD3ek-9Lwj@FVFF77S0Q05N>
On Thu, Apr 25, 2024 at 11:15:17AM +0100, Mark Rutland wrote:
> To be clear, I dislike the function annotation because then it applies to
> *everything* within the function, which is overly broad and the intent becomes
> unclear. That makes it painful to refactor the code (since e.g. if we want to
> add another operation to the function which *should not* wrap, that gets
> silenced too).
Yeah, I find that a convincing argument for larger functions, but it
seemed to me that for these 1-line implementations it was okay. But
regardless, yup, no function-level annotation here.
> I'm happy with something that applies to specific types/variables or specific
> operations (which is what these patches do).
Thanks!
--
Kees Cook
next prev parent reply other threads:[~2024-04-25 17:19 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-24 19:17 [PATCH 0/4] Annotate atomics for signed integer wrap-around Kees Cook
2024-04-24 19:17 ` [PATCH 1/4] locking/atomic/x86: Silence intentional wrapping addition Kees Cook
2024-04-24 22:41 ` Peter Zijlstra
2024-04-24 22:45 ` Kees Cook
2024-04-24 22:54 ` Peter Zijlstra
2024-04-24 23:05 ` Peter Zijlstra
2024-04-24 23:30 ` Kees Cook
2024-04-25 9:28 ` Peter Zijlstra
2024-04-25 10:19 ` Mark Rutland
2024-04-24 23:20 ` Kees Cook
2024-04-25 9:17 ` Peter Zijlstra
2024-04-25 17:39 ` Kees Cook
2024-04-25 10:15 ` Mark Rutland
2024-04-25 17:19 ` Kees Cook [this message]
2024-04-24 22:51 ` Peter Zijlstra
2024-04-24 19:17 ` [PATCH 2/4] arm64: atomics: lse: " Kees Cook
2024-05-02 11:21 ` Will Deacon
2024-05-02 15:00 ` Kees Cook
2024-04-24 19:17 ` [PATCH 3/4] locking/atomic: Annotate generic atomics with wrapping Kees Cook
2024-04-24 19:17 ` [PATCH 4/4] ipv4: Silence intentional wrapping addition Kees Cook
2024-04-26 7:40 ` [PATCH 1/4] locking/atomic/x86: " David Howells
2024-05-02 14:57 ` Kees Cook
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