Documentation/acpi/dsdt-override.txt

   1 Linux supports a method of overriding the BIOS DSDT:
   2
   3 CONFIG_ACPI_CUSTOM_DSDT builds the image into the kernel.
   4
   5 When to use this method is described in detail on the
   6 Linux/ACPI home page:
   7 https://01.org/linux-acpi/documentation/overriding-dsdt