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Diffstat (limited to 'kernel/Documentation/filesystems/efivarfs.txt')
| -rw-r--r-- | kernel/Documentation/filesystems/efivarfs.txt | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/Documentation/filesystems/efivarfs.txt b/kernel/Documentation/filesystems/efivarfs.txt index c477af086..686a64bba 100644 --- a/kernel/Documentation/filesystems/efivarfs.txt +++ b/kernel/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. |