From: Catalin Marinas <catalin.marinas@arm.com>
To: Qi Zheng <zhengqi.arch@bytedance.com>,
will@kernel.org, mark.rutland@arm.com, arnd@arndb.de
Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3] arm64: run softirqs on the per-CPU IRQ stack
Date: Thu, 8 Sep 2022 19:34:32 +0100 [thread overview]
Message-ID: <166266206917.232050.13406365654648397230.b4-ty@arm.com> (raw)
In-Reply-To: <20220815124739.15948-1-zhengqi.arch@bytedance.com>
On Mon, 15 Aug 2022 20:47:39 +0800, Qi Zheng wrote:
> Currently arm64 supports per-CPU IRQ stack, but softirqs
> are still handled in the task context.
>
> Since any call to local_bh_enable() at any level in the task's
> call stack may trigger a softirq processing run, which could
> potentially cause a task stack overflow if the combined stack
> footprints exceed the stack's size, let's run these softirqs
> on the IRQ stack as well.
>
> [...]
Applied to arm64 (for-next/misc), thanks!
[1/1] arm64: run softirqs on the per-CPU IRQ stack
https://git.kernel.org/arm64/c/2d2f3bb897a3
--
Catalin
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prev parent reply other threads:[~2022-09-08 18:35 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-15 12:47 [PATCH v3] arm64: run softirqs on the per-CPU IRQ stack Qi Zheng
2022-08-26 4:16 ` Qi Zheng
2022-09-07 7:04 ` Qi Zheng
2022-09-07 13:34 ` Will Deacon
2022-09-07 14:50 ` Qi Zheng
2022-09-08 18:34 ` Catalin Marinas [this message]
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