[PATCH 1/2] arm64: smp: Fix pseudo NMI issues w/ broken Mediatek FW

Marc Zyngier maz at kernel.org
Fri Oct 6 03:20:44 PDT 2023


On Thu, 05 Oct 2023 11:27:26 +0100,
Mark Rutland <mark.rutland at arm.com> wrote:

> 3) Partial fix: make the ARM64_HAS_GIC_PRIO_MASKING cpucap depend on the
>    absence of a "mediatek,broken-save-restore-fw" property in the DT. I believe
>    we can check that in early_enable_pseudo_nmi() or can_use_gic_priorities().
> 
>    That'll avoid potential issues if/when we change the priorities used for
>    pNMI (which is something I've been looking at).
> 
> I'm happy with (3) if Marc is.

Definitely worth investigating if you have the bandwidth.

	M.

-- 
Without deviation from the norm, progress is not possible.



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