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| author | Marc Zyngier <maz@kernel.org> | 2021-02-08 12:57:29 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2021-02-09 16:50:57 +0300 |
| commit | 93ad55b7852b324a3fd7d46910b88c81deb62357 (patch) | |
| tree | e1066fe48afa3e16df6b0f9cd1f66fc5bf239831 /Documentation/admin-guide | |
| parent | a762f4ffc3c8a434da1b712e57a80d8d10404198 (diff) | |
| download | linux-93ad55b7852b324a3fd7d46910b88c81deb62357.tar.xz | |
arm64: cpufeatures: Allow disabling of BTI from the command-line
In order to be able to disable BTI at runtime, whether it is
for testing purposes, or to work around HW issues, let's add
support for overriding the ID_AA64PFR1_EL1.BTI field.
This is further mapped on the arm64.nobti command-line alias.
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: David Brazdil <dbrazdil@google.com>
Tested-by: Srinivas Ramana <sramana@codeaurora.org>
Link: https://lore.kernel.org/r/20210208095732.3267263-21-maz@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 41786d205e0d..c00236b22c6e 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -373,6 +373,9 @@ arcrimi= [HW,NET] ARCnet - "RIM I" (entirely mem-mapped) cards Format: <io>,<irq>,<nodeID> + arm64.nobti [ARM64] Unconditionally disable Branch Target + Identification support + ataflop= [HW,M68k] atarimouse= [HW,MOUSE] Atari Mouse |