Hi Konstantin, thanks for your driver, just few grammatical thoughts. ... > +If it is not the case for your UEFI firmware and you don't have access to the source Not a grammatical error, but it sounds a bit more linear: /If it is not/If this is not/ > +code, you can use ACPI SSDT Overlays to provide the missing parts. Just keep in mind > +that in this case you would need to load your extra SSDT table before the piix4 driver > +start, i.e. you should provide SSDT via initrd or EFI variable methods and not via /start/starts/ If you agree, I would go ahead and merge this. Andi > +configfs.