From: Paul Walmsley <pjw@kernel.org>
To: Arnd Bergmann <arnd@kernel.org>
Cc: Paul Walmsley <pjw@kernel.org>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Samuel Holland <samuel.holland@sifive.com>,
Nathan Chancellor <nathan@kernel.org>,
Arnd Bergmann <arnd@arndb.de>, Alexandre Ghiti <alex@ghiti.fr>,
Nick Desaulniers <ndesaulniers@google.com>,
Bill Wendling <morbo@google.com>,
Justin Stitt <justinstitt@google.com>,
Jonathan Cameron <Jonathan.Cameron@huawei.com>,
Aleksandar Rikalo <arikalo@gmail.com>,
Djordje Todorovic <djordje.todorovic@htecgroup.com>,
Conor Dooley <conor.dooley@microchip.com>,
Nam Cao <namcao@linutronix.de>, Jia Wang <wangjia@ultrarisc.com>,
Pinkesh Vaghela <pinkesh.vaghela@einfochips.com>,
Drew Fustini <dfustini@oss.tenstorrent.com>,
Junhui Liu <junhui.liu@pigmoral.tech>,
linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
llvm@lists.linux.dev
Subject: Re: [PATCH] riscv: limit sifive errata to CONFIG_64BIT
Date: Fri, 18 Sep 2026 18:47:37 -0600 (MDT) [thread overview]
Message-ID: <3f809812-03d4-92c0-0f96-db76d8d909b0@kernel.org> (raw)
In-Reply-To: <20260916083752.47310-1-arnd@kernel.org>
On Wed, 16 Sep 2026, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
>
> There are two errata for this vendor, and they both individually depend on
> CONFIG_64BIT already. However, an 32-bit allmodconfig produces this warning
> from clang for a condition that can never be true.
>
> arch/riscv/errata/sifive/errata.c:29:14: error: result of comparison of constant 9223372036854775815 with expression of type 'unsigned long' is always true [-Werror,-Wtautological-constant-out-of-range-compare]
> 29 | if (arch_id != 0x8000000000000007 ||
> | ~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~
> arch/riscv/errata/sifive/errata.c:42:14: error: result of comparison of constant 9223372036854775815 with expression of type 'unsigned long' is always true [-Werror,-Wtautological-constant-out-of-range-compare]
> 42 | if (arch_id != 0x8000000000000007 && arch_id != 0x1)
> | ~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Thanks, queued for v7.3-rc.
- Paul
prev parent reply other threads:[~2026-09-19 0:47 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-16 8:37 Arnd Bergmann
2026-09-19 0:47 ` Paul Walmsley [this message]
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