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| author |  Andy Lutomirski <luto@kernel.org>
| 2020-05-28 16:13:58 -0400 |
|---|---|---|
| committer |  Thomas Gleixner <tglx@linutronix.de>
| 2020-06-18 15:47:05 +0200 |
| commit | b745cfba44c152c34363eea9e052367b6b1d652b (patch) | |
| tree | 3a05088df5cc44941b1d2a3ed664ebe785dec091 /Documentation/admin-guide/kernel-parameters.txt | |
| parent | x86/entry/64: Handle FSGSBASE enabled paranoid entry/exit (diff) | |
| download | linux-b745cfba44c152c34363eea9e052367b6b1d652b.tar.gz linux-b745cfba44c152c34363eea9e052367b6b1d652b.tar.bz2 linux-b745cfba44c152c34363eea9e052367b6b1d652b.zip | |
x86/cpu: Enable FSGSBASE on 64bit by default and add a chicken bit
Now that FSGSBASE is fully supported, remove unsafe_fsgsbase, enable
FSGSBASE by default, and add nofsgsbase to disable it.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Link: https://lkml.kernel.org/r/1557309753-24073-17-git-send-email-chang.seok.bae@intel.com
Link: https://lkml.kernel.org/r/20200528201402.1708239-13-sashal@kernel.org
Diffstat (limited to 'Documentation/admin-guide/kernel-parameters.txt')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 7308db7308ba..8c0d045f1dc7 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -3079,8 +3079,7 @@ no5lvl [X86-64] Disable 5-level paging mode. Forces kernel to use 4-level paging instead. - unsafe_fsgsbase [X86] Allow FSGSBASE instructions. This will be - replaced with a nofsgsbase flag. + nofsgsbase [X86] Disables FSGSBASE instructions. no_console_suspend [HW] Never suspend the console |