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    SubjectRe: [RFC PATCH 7/7] irqchip/apple-aic: add SMP support to the Apple AIC driver.
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    > On 21 Jan 2021, at 16:09, Arnd Bergmann <arnd@kernel.org> wrote:
    >
    > On Thu, Jan 21, 2021 at 3:10 PM Marc Zyngier <maz@kernel.org> wrote:
    >> On 2021-01-21 13:34, Mohamed Mediouni wrote:
    >>>> On 21 Jan 2021, at 14:22, Marc Zyngier <maz@kernel.org> wrote:
    >>> Because UART access adapters for the new M1 Macs aren’t plentiful
    >>> at all, I actually use this for development, with iPhones which have
    >>> much more easy to buy Lightning-to-UART adapters.
    >>>
    >>> (That’s why the old implementation is there too)
    >>>
    >>> Might be worth splitting the new one to a new commit though...
    >>
    >> This series is supposed to cover M1 only, and adding extra support
    >> as part of it is only likely to make the code harder to review.
    >>
    >> I'd rather you focus on a single IPI interface (fast or slow,
    >> I don't really care). Extra features can come in later.
    >
    > Agreed. The slow interface is probably easier to start with,
    > because it avoids hooking into the FIQ, so the FIQ can be
    > completely decoupled from AIC and just used for the timer.
    >
    > Maybe there is even a way to use more than one hardware IPI in
    > the AIC?
    >
    > Arnd
    Hello,

    Decided to only have only the slow interface in the second patch series.

    Thank you,
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