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

Kirill A. Shutemov kirill.shutemov at linux.intel.com
Sun Oct 29 07:23:37 PDT 2023


On Sat, Oct 28, 2023 at 04:12:10PM +0200, Thomas Gleixner wrote:
> 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!

Thanks!

Thomas, could you take a look if the last patch in the series is sane?

-- 
  Kiryl Shutsemau / Kirill A. Shutemov



More information about the kexec mailing list