[PATCH v2] arm64: Disallow disabling boot CPU based on config

Thomas Gleixner tglx at kernel.org
Fri Jul 3 14:09:34 PDT 2026


On Fri, Jul 03 2026 at 15:28, Mark Rutland wrote:
> On Fri, Jul 03, 2026 at 04:50:02PM +0530, Sneh Mankad wrote:
>> +       depends on HOTPLUG_CPU
>> +       depends on SUSPEND
>> +       help
>> +         Disallow boot CPU (CPU0) offline when the suspend_ops->enter()
>> +         has to be executed by boot CPU.
>
> As above, I don't think this makse sense as a config option.

Correct. That's pointless as it can be determined at boot time either
through firmware (ACPI/DT) or if that's not possible for whatever
reasons then a runtime detection quirk which depends on that particular
platform.




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