Messages in this thread | | | From | Arnd Bergmann <> | Date | Thu, 14 Jul 2022 13:32:30 +0200 | Subject | Re: [PATCH v1 1/2] arm64: run softirqs on the per-CPU IRQ stack |
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On Fri, Jul 8, 2022 at 11:49 AM Qi Zheng <zhengqi.arch@bytedance.com> 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. > > Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com>
This seems like a nice improvement, and this version addresses my concern I raised on the RFC version.
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
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