Re: [RFC] ich9:cpuhp: add support for cpu hot-unplug with SMI broadcast enabled

[Laszlo Ersek]

On 11/28/20 00:48, Ankur Arora wrote:

> It is possible that there are CPUs with bits for both is_inserting and
> is_removing. In that case QemuCpuhpCollectApicIds() would put them in the
> PluggedApicIds array and the unplug eventually happens in the next
> firmware invocation.
> 
> If a CPU has both is_inserting and fw_remove set, the firmware processes
> the
> hotplug in that invocation and the unplug happens whenever the OSPM
> triggers
> the firmware next.

If these corner cases will actually work (I'm somewhat doubtful), that
will be really great.

Thanks!
Laszlo