Re: [PATCH] perf: arm_pmu_acpi: Get rid of the edge-triggered interrupt oddity
From: Will Deacon
Date: Sun Aug 02 2026 - 08:13:32 EST
On Sat, 25 Jul 2026 17:26:27 +0100, Marc Zyngier wrote:
> The ACPI spec bizarrely indicates that the PMU interrupt can be
> edge-triggered, which contradicts the very basics of the PMU
> architecture (SW is required to clear the interrupt condition for
> the level to drop).
>
> Remove the code parsing this flag and always flag the interrupt
> as level triggered, no matter what firmware says.
>
> [...]
Applied to arm64 (for-next/perf), thanks!
[1/1] perf: arm_pmu_acpi: Get rid of the edge-triggered interrupt oddity
https://git.kernel.org/arm64/c/e445816a488a
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev