diff options
| author | Daiane Angolini <daiane.angolini@foundries.io> | 2022-10-05 12:55:07 -0300 |
|---|---|---|
| committer | Daiane Angolini <daiane.angolini@foundries.io> | 2022-10-05 12:55:13 -0300 |
| commit | 8c8464177402c32a21546530426e4995ab21c510 (patch) | |
| tree | bdc37e3985a40b5facb40342af4a056198ac4698 /Documentation | |
| parent | 143ca87ada4aeca55c5418be921d07d12763878a (diff) | |
| parent | a9e2d8e52e1c0d87c0fa4f9d2d38e210aabed515 (diff) | |
Merge tag 'v5.15.57' into 5.15-2.1.x-imx
This is the 5.15.57 stable release
Signed-off-by: Daiane Angolini <daiane.angolini@foundries.io>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 205ad5cfe63d..452082e28128 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -4968,6 +4968,30 @@ retain_initrd [RAM] Keep initrd memory after extraction + retbleed= [X86] Control mitigation of RETBleed (Arbitrary + Speculative Code Execution with Return Instructions) + vulnerability. + + off - no mitigation + auto - automatically select a migitation + auto,nosmt - automatically select a mitigation, + disabling SMT if necessary for + the full mitigation (only on Zen1 + and older without STIBP). + ibpb - mitigate short speculation windows on + basic block boundaries too. Safe, highest + perf impact. + unret - force enable untrained return thunks, + only effective on AMD f15h-f17h + based systems. + unret,nosmt - like unret, will disable SMT when STIBP + is not available. + + Selecting 'auto' will choose a mitigation method at run + time according to the CPU. + + Not specifying this option is equivalent to retbleed=auto. + rfkill.default_state= 0 "airplane mode". All wifi, bluetooth, wimax, gps, fm, etc. communication is blocked by default. @@ -5314,6 +5338,7 @@ eibrs - enhanced IBRS eibrs,retpoline - enhanced IBRS + Retpolines eibrs,lfence - enhanced IBRS + LFENCE + ibrs - use IBRS to protect kernel Not specifying this option is equivalent to spectre_v2=auto. |