Which ACPI table is the first ACPI table which can be used to find other ACPI tables?
The extended root system description table (XSDT) is the first table used by the ACPI subsystem and contains the addresses of most of the other ACPI tables on the system. The XSDT points to the fixed ACPI description table (FADT) as well as other major tables that the OS processes during initialization. After the OS initializes, the FADT directs the ACPI subsystem to the differentiated system description table (DSDT), which is the beginning of the namespace because it is the first table that contains a definition block.
Below is an instruction that describes a task. Write a response that appropriately completes the request. ### Instruction: Which ACPI table is the first ACPI table which can be used to find other ACPI tables? ### Response: The extended root system description table (XSDT) is the first table used by the ACPI subsystem and contains the addresses of most of the other ACPI tables on the system. The XSDT points to the fixed ACPI description table (FADT) as well as other major tables that the OS processes during initialization. After the OS initializes, the FADT directs the ACPI subsystem to the differentiated system description table (DSDT), which is the beginning of the namespace because it is the first table that contains a definition block. 