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| author | Ingo Molnar <mingo@kernel.org> | 2016-02-29 09:04:01 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-02-29 09:04:01 +0100 |
| commit | 0a7348925f58839fbb4c86b7e34f43b91beb0586 (patch) | |
| tree | 8db1b38503cc444f78b13ed1a3d6816708cf181c /Documentation/filesystems/efivarfs.txt | |
| parent | Merge tag 'perf-core-for-mingo-20160226' of git://git.kernel.org/pub/scm/linu... (diff) | |
| parent | Linux 4.5-rc6 (diff) | |
| download | linux-0a7348925f58839fbb4c86b7e34f43b91beb0586.tar.xz linux-0a7348925f58839fbb4c86b7e34f43b91beb0586.zip | |
Merge tag 'v4.5-rc6' into perf/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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. |