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

Hi Marek,

On 19/09/2025 23:31, Marek Szyprowski wrote:

On 27.08.2025 13:58, Krzysztof Kozlowski wrote:

quoted

On 27/08/2025 12:26, Marek Szyprowski wrote:

quoted

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 <redacted>

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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