Messages in this thread | | | From | Arnd Bergmann <> | Date | Thu, 7 Jul 2022 15:53:20 +0200 | Subject | Re: [RFC PATCH 1/2] arm64: run softirqs on the per-CPU IRQ stack |
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On Thu, Jul 7, 2022 at 3:43 PM Qi Zheng <zhengqi.arch@bytedance.com> wrote: > On 2022/7/7 20:58, Arnd Bergmann wrote: > > On Thu, Jul 7, 2022 at 1:05 PM Qi Zheng <zhengqi.arch@bytedance.com> wrote: > > Are there any architectures left that use IRQ stacks but don't > > set HAVE_SOFTIRQ_ON_OWN_STACK? If not, we could > > also consider removing the Kconfig symbol and just requiring > > it to be done this way (for non-PREEMPT_RT). > > I haven't taken a close look at other architectures than x86 and arm, > but I think it's a good idea.
I had another look in the meantime, and I think it's only mips and loongarch now that don't use HAVE_SOFTIRQ_ON_OWN_STACK. Not sure about arch/um/, which is a bit different from the rest.
Arnd
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