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| author | Marc Zyngier <maz@kernel.org> | 2021-02-08 12:57:31 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2021-02-09 16:50:57 +0300 |
| commit | f8da5752fd1b25f1ecf78a79013e2dfd2b860589 (patch) | |
| tree | 665b806bb277a0a7382c655b52587f3c4081d01d /Documentation/admin-guide | |
| parent | 7f6240858cf3abb75237c9ba63ec70d232573ae8 (diff) | |
| download | linux-f8da5752fd1b25f1ecf78a79013e2dfd2b860589.tar.xz | |
arm64: cpufeatures: Allow disabling of Pointer Auth from the command-line
In order to be able to disable Pointer Authentication at runtime,
whether it is for testing purposes, or to work around HW issues,
let's add support for overriding the ID_AA64ISAR1_EL1.{GPI,GPA,API,APA}
fields.
This is further mapped on the arm64.nopauth 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/20210208095732.3267263-23-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 c00236b22c6e..cbb51ab2be93 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -376,6 +376,9 @@ arm64.nobti [ARM64] Unconditionally disable Branch Target Identification support + arm64.nopauth [ARM64] Unconditionally disable Pointer Authentication + support + ataflop= [HW,M68k] atarimouse= [HW,MOUSE] Atari Mouse |