On Wed, 06 Sep 2023 17:02:56 +0100,
Douglas Anderson <diand...@chromium.org> wrote:
>
> As of commit 6abbd6988971 ("irqchip/gic, gic-v3: Make SGIs use
> handle_percpu_devid_irq()") SGIs are treated the same as PPIs/EPPIs
> and use handle_percpu_devid_irq() by default. Unfortunately,
> handle_percpu_devid_irq() isn't NMI safe, and so to run in an NMI
> context those should use handle_percpu_devid_fasteoi_nmi().
>
> In order to accomplish this, we just have to make room for SGIs in the
> array of refcounts that keeps track of which interrupts are set as
> NMI. We also rename the array and create a new indexing scheme that
> accounts for SGIs.
>
> Also, enable NMI support prior to gic_smp_init() as allocation of SGIs
> as IRQs/NMIs happen as part of this routine.
>
> Co-developed-by: Sumit Garg <sumit.g...@linaro.org>
> Signed-off-by: Sumit Garg <sumit.g...@linaro.org>
> Acked-by: Mark Rutland <mark.rutl...@arm.com>
> Tested-by: Chen-Yu Tsai <we...@chromium.org>
> Signed-off-by: Douglas Anderson <diand...@chromium.org>
Acked-by: Marc Zyngier <m...@kernel.org>
M.
--
Without deviation from the norm, progress is not possible.
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