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| author | Alex Shi <alex.shi@linaro.org> | 2016-04-21 14:43:36 +0800 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2016-04-21 14:43:36 +0800 |
| commit | 9beee7af111a7afa5f7b787daaf8a6891c05f216 (patch) | |
| tree | 92fdbea807b9ef2917d1f087355f08617230dd75 /Documentation/filesystems/efivarfs.txt | |
| parent | e8490c42825967752fef08dddf37eb3f5f34d753 (diff) | |
| parent | fd9302c16fc244139c1ddfdffc145d5b772ed9ce (diff) | |
Merge branch 'linux-linaro-lsk-v4.1' into linux-linaro-lsk-v4.1-androidlsk-v4.1-16.04-android
Conflicts:
keep -fno-pic flag in arch/arm64/Makefile
Diffstat (limited to 'Documentation/filesystems/efivarfs.txt')
| -rw-r--r-- | Documentation/filesystems/efivarfs.txt | 7 |
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. |