Differentiated System Description Table (DSDT) for system configuration info. DSDT is a major ACPI table used to describe what peripherals the machine has, and information on PCI IRQ mappings and power management.
DefinitionBlock ("", "DSDT", 2, "", "", 0x0)
Once a file containing ASL similar to this example is compiled, the file is packaged as firmware. During the initialization of the OS, a namespace hierarchy is created and helps the OS find devices and initialize drivers for them. The following diagram illustrates this concept.
这是我曾经提交过的pr dm:gvt:update bus0 memlimit32 value，该patch与DSDT相关。