On Wed, 27 May, at 12:30:37PM, Ard Biesheuvel wrote: > > OK. Then I guess we should at least document in > Documentation/ABI/stable/sysfs-firmware-efi-systab that the order in > which the entries are enumerated is part of the ABI. Makes perfect sense to me. How about this? --- >From ccb5f08bb71ae4199c75668c6beacd6b47fa186c Mon Sep 17 00:00:00 2001 From: Matt Fleming <matt.fleming@xxxxxxxxx> Date: Wed, 27 May 2015 14:14:22 +0100 Subject: [PATCH] efi: Add 'systab' information to Documentation/ABI It's not clear right now that the order in which entries are displayed in /sys/firmware/efi/systab actually forms an ABI that userspace tools rely upon. Document the ABI along with the userspace tool that cares. Suggested-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx> Cc: Jean Delvare <jdelvare@xxxxxxx> Cc: Leif Lindholm <leif.lindholm@xxxxxxxxxx> Cc: Ivan Khoronzhuk <ivan.khoronzhuk@xxxxxxxxxxxxxxx> Signed-off-by: Matt Fleming <matt.fleming@xxxxxxxxx> --- Documentation/ABI/testing/sysfs-firmware-efi | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-firmware-efi b/Documentation/ABI/testing/sysfs-firmware-efi index 05874da7ce80..e794eac32a90 100644 --- a/Documentation/ABI/testing/sysfs-firmware-efi +++ b/Documentation/ABI/testing/sysfs-firmware-efi @@ -18,3 +18,13 @@ Contact: Dave Young <dyoung@xxxxxxxxxx> 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@xxxxxxxxxxxxxxx +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 -- 2.1.0 -- Matt Fleming, Intel Open Source Technology Center -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
