Messages in this thread | | | Date | Tue, 20 Oct 2020 11:08:30 +0100 | From | Marc Zyngier <> | Subject | Re: [PATCH v5 1/5] arm64: Add framework to turn IPI as NMI |
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On 2020-10-20 07:43, Sumit Garg wrote: > On Mon, 19 Oct 2020 at 17:07, Marc Zyngier <maz@kernel.org> wrote:
[...]
>> > +{ >> > + if (!ipi_desc) >> > + return; >> > + >> > + if (is_nmi) { >> > + if (!prepare_percpu_nmi(ipi_id)) >> > + enable_percpu_nmi(ipi_id, IRQ_TYPE_NONE); >> > + } else { >> > + enable_percpu_irq(ipi_id, IRQ_TYPE_NONE); >> >> I'm not keen on this. Normal IRQs can't reliably work, so why do you >> even bother with this? > > Yeah I agree but we need to support existing functionality for kgdb > roundup and sysrq backtrace using normal IRQs as well.
When has this become a requirement? I don't really see the point in implementing something that is known not to work.
M. -- Jazz is not dead. It just smells funny...
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