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linux/Documentation/acpi/dsdt-override.txt
Len Brown d89e9d6b49 ACPI: update DSDT override documentation
Signed-off-by: Len Brown <len.brown@intel.com>
2008-02-07 04:00:38 -05:00

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Linux supports two methods of overriding the BIOS DSDT:
CONFIG_ACPI_CUSTOM_DSDT builds the image into the kernel.
CONFIG_ACPI_CUSTOM_DSDT_INITRD adds the image to the initrd.
When to use these methods is described in detail on the
Linux/ACPI home page:
http://www.lesswatts.org/projects/acpi/overridingDSDT.php
Note that if both options are used, the DSDT supplied
by the INITRD method takes precedence.
Documentation/initramfs-add-dsdt.sh is provided for convenience
for use with the CONFIG_ACPI_CUSTOM_DSDT_INITRD method.