On Wed, Sep 13, 2023 at 04:38:03PM +0000, James Morse wrote: > ACPI has two ways of describing processors in the DSDT. Either as a device > object with HID ACPI0007, or as a type 'C' package inside a Processor > Container. I'm struggling with the reference to a "type 'C' package inside a Processor Container". ACPI 6.0, which introduced the Processor Container, says: "This optional device is a container object that acts much like a bus node in a namespace. It may contain child objects that are either processor devices or other processor containers" For "Processor device": "For more information on the declaration of the processor device object, see Section 19.6.30, "Device (Declare Device Package)."" which leads one to the Device() object, not the Processor() object. It also states: "A Device definition for a processor is declared using the ACPI0007 hardware identifier (HID)." My understanding from this is that Processor() is not allowed to be used within a Processor Container, only Device()s with _HID of ACPI0007 are permitted. In light of this, please could you clarify your first sentence, as it seems to be contrary to what is stated in ACPI 6.x specs. Thanks. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!
