Re: [PATCHv2 02/13] kernel/cpu: Add support for declaring CPU offlining not supported

[Thomas Gleixner]

On Fri, Oct 20 2023 at 18:12, Kirill A. Shutemov wrote:

Subject: cpu/hotplug: ...

> ACPI MADT doesn't allow to offline CPU after it got woke up.

ACPI MADT is a table ...

This is about the MADT mailbox wakeup method, right?

> Currently offlining hotplug prevented based on the confidential

is prevented

> computing attribute which is set for Intel TDX. But TDX is not
> the only possible user of the wake up method.
>
> Introduce cpu_hotplug_not_supported() that can be called to indicate
> that CPU offlining should be disabled.

Otherwise the changes look good!