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| author | Jeremy Linton <jeremy.linton@arm.com> | 2019-04-15 16:21:20 -0500 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2019-04-26 16:26:42 +0100 |
| commit | e5ce5e7267ddcbe13ab9ead2542524e1b7993e5a (patch) | |
| tree | 67994973a829ee4f85f584c4052fa0870e4f10b1 /Documentation/admin-guide | |
| parent | cbafee55b5a0ec47baac622bce6b4d19afe45576 (diff) | |
| download | linux-e5ce5e7267ddcbe13ab9ead2542524e1b7993e5a.tar.gz linux-e5ce5e7267ddcbe13ab9ead2542524e1b7993e5a.tar.bz2 linux-e5ce5e7267ddcbe13ab9ead2542524e1b7993e5a.zip | |
arm64: Provide a command line to disable spectre_v2 mitigation
There are various reasons, such as benchmarking, to disable spectrev2
mitigation on a machine. Provide a command-line option to do so.
Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index cf82bac648cd..6a929258faf7 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -2905,10 +2905,10 @@ check bypass). With this option data leaks are possible in the system. - nospectre_v2 [X86,PPC_FSL_BOOK3E] Disable all mitigations for the Spectre variant 2 - (indirect branch prediction) vulnerability. System may - allow data leaks with this option, which is equivalent - to spectre_v2=off. + nospectre_v2 [X86,PPC_FSL_BOOK3E,ARM64] Disable all mitigations for + the Spectre variant 2 (indirect branch prediction) + vulnerability. System may allow data leaks with this + option. nospec_store_bypass_disable [HW] Disable all mitigations for the Speculative Store Bypass vulnerability |