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-rw-r--r--Documentation/ABI/testing/sysfs-firmware-efi10
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diff --git a/Documentation/ABI/testing/sysfs-firmware-efi b/Documentation/ABI/testing/sysfs-firmware-efi
index 05874da7c..e794eac32 100644
--- a/Documentation/ABI/testing/sysfs-firmware-efi
+++ b/Documentation/ABI/testing/sysfs-firmware-efi
@@ -18,3 +18,13 @@ Contact: Dave Young <dyoung@redhat.com>
Description: It shows the physical address of config table entry in the EFI
system table.
Users: Kexec
+
+What: /sys/firmware/efi/systab
+Date: April 2005
+Contact: linux-efi@vger.kernel.org
+Description: Displays the physical addresses of all EFI Configuration
+ Tables found via the EFI System Table. The order in
+ which the tables are printed forms an ABI and newer
+ versions are always printed first, i.e. ACPI20 comes
+ before ACPI.
+Users: dmidecode