Re: [PATCH v3] arm64: run softirqs on the per-CPU IRQ stack
From: Catalin Marinas
Date: Thu Sep 08 2022 - 14:34:59 EST
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