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authorAlex Shi <alex.shi@linaro.org>2016-04-21 12:05:34 +0800
committerAlex Shi <alex.shi@linaro.org>2016-04-21 12:05:34 +0800
commite9cd0f1ce300f433a478bd1973dea112b5fbb800 (patch)
tree11c64ff5cd0ef07c716d998a972feaf550fb21f5 /Documentation
parent24284529d5e0b544b87f340850bf51690d50f573 (diff)
parentf151e73cea45b97a5690806f3391d10e547d04d9 (diff)
downloadlinux-linaro-stable-e9cd0f1ce300f433a478bd1973dea112b5fbb800.tar.gz
Merge tag 'v3.18.31' into linux-linaro-lsk-v3.18
This is the 3.18.31 stable release
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/filesystems/efivarfs.txt7
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/filesystems/efivarfs.txt b/Documentation/filesystems/efivarfs.txt
index c477af086e65..686a64bba775 100644
--- a/Documentation/filesystems/efivarfs.txt
+++ b/Documentation/filesystems/efivarfs.txt
@@ -14,3 +14,10 @@ filesystem.
efivarfs is typically mounted like this,
mount -t efivarfs none /sys/firmware/efi/efivars
+
+Due to the presence of numerous firmware bugs where removing non-standard
+UEFI variables causes the system firmware to fail to POST, efivarfs
+files that are not well-known standardized variables are created
+as immutable files. This doesn't prevent removal - "chattr -i" will work -
+but it does prevent this kind of failure from being accomplished
+accidentally.