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

[William McVicker]

Hi Daniel,

On 09/24/2025, Daniel Lezcano wrote:
> 
> 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.

Is there somewhere I can check to see which changes will be re-sent? I don't
see them in the timers/drivers/next branch. Will it be patches 2-4 plus the
fixes for the section mismatch and this new IRQ fix? Once that's all sorted
out, I'll base the new modularization patches on top of that.

Thanks,
Will