[PATCH] clocksource/drivers/exynos_mct: Use percpu interrupts only on ARM64

Krzysztof Kozlowski krzk at kernel.org
Wed Aug 27 04:58:19 PDT 2025


On 27/08/2025 12:26, Marek Szyprowski wrote:
> For some unknown reasons forcing percpu interrupts for local timers
> breaks CPU hotplug for 'little' cores on legacy ARM 32bit Exynos based
> machines (for example Exynos5422-based Odroid-XU3/XU4 boards). Use percpu
> flag only when driver is compiled for newer ARM64 architecture.
> 
> Fixes: f3cec54ee3bf ("clocksource/drivers/exynos_mct: Set local timer interrupts as percpu")


I am pretty sure the patch above was not tested on arm32, thus this
workaround seems reasonable.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski at linaro.org>



Best regards,
Krzysztof



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