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

[Daniel Lezcano]

Hi Marek,

On 19/09/2025 23:31, Marek Szyprowski wrote:
> On 27.08.2025 13:58, Krzysztof Kozlowski wrote:
>> 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>
> 
> Daniel, any chance to get this merged?

The patch does not apply. However it is not your fault but a glitch in 
the previous pull request and the regression found in the Exynos MCT.

Apparently, Thomas had to drop the entire pull request while I thought 
he dropped only Will's changes.

A pull request with the previous changes for v6.17-rc1 and with the new 
changes for v6.18-rc1 is about to be emitted but without the Exynos MCT 
changes for the modularization. That means your change does not apply 
correctly anymore on the current changes.

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