From: Will Deacon <will@kernel.org>
To: Catalin Marinas <catalin.marinas@arm.com>,
Arnd Bergmann <arnd@kernel.org>
Cc: kernel-team@android.com, Will Deacon <will@kernel.org>,
Arnd Bergmann <arnd@arndb.de>,
Jonathan Cameron <Jonathan.Cameron@huawei.com>,
Gavin Shan <gshan@redhat.com>,
Jean-Philippe Brucker <jean-philippe@linaro.org>,
James Morse <james.morse@arm.com>,
Douglas Anderson <dianders@chromium.org>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] arm64: move smp_send_stop() cpu mask off stack
Date: Fri, 4 Jul 2025 18:44:09 +0100 [thread overview]
Message-ID: <175164313641.1187522.9351949563130846501.b4-ty@kernel.org> (raw)
In-Reply-To: <20250620111045.3364827-1-arnd@kernel.org>
On Fri, 20 Jun 2025 13:10:41 +0200, Arnd Bergmann wrote:
> For really large values of CONFIG_NR_CPUS, a CPU mask value should
> not be put on the stack:
>
> arch/arm64/kernel/smp.c:1188:1: error: the frame size of 8544 bytes is larger than 1536 bytes [-Werror=frame-larger-than=]
>
> This could be achieved using alloc_cpumask_var(), which makes it
> depend on CONFIG_CPUMASK_OFFSTACK, but as this function is already
> serialized and can only run on one CPU, making the variable 'static'
> is easier.
>
> [...]
Applied to arm64 (for-next/fixes), thanks!
[1/1] arm64: move smp_send_stop() cpu mask off stack
https://git.kernel.org/arm64/c/6c66bb655ca3
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev
prev parent reply other threads:[~2025-07-04 17:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-20 11:10 Arnd Bergmann
2025-06-20 11:24 ` Catalin Marinas
2025-07-04 17:44 ` Will Deacon [this message]
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