Messages in this thread | | | Date | Thu, 14 Jul 2022 19:50:38 +0800 | Subject | Re: [PATCH v1 1/2] arm64: run softirqs on the per-CPU IRQ stack | From | Qi Zheng <> |
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On 2022/7/14 19:32, Arnd Bergmann wrote: > 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>
Thanks for your review. :)
-- Thanks, Qi
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