Comment # 24 on bug 1229085 from Petr Valenta

(In reply to Jiri Slaby from comment #23)
> So I assume this was fixed somewhere betwenn 6.10.3 and 6.10.5?

Not exactly. When I reboot a run this command: 

echo 'auto' > /sys/bus/pci/devices/0000:00:1f.6/power/control

then one CPU core is fully utilized for about 6 minutes by irq/9-acpi and after
that time IRQ storm disappears. 

This does not happen with kernel 6.9.9. I have tried self compiled kernel
6.9.12 and it was ok too. So IRQ storm starts to happen with 6.10.

This finding is quite enough for me because I will avoid using power control of
ethernet controller in the future. But some sort of problem is still in
6.{10,11}.x

Hope it's more clear now.