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-rw-r--r--Documentation/admin-guide/kernel-parameters.txt17
1 files changed, 17 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 20cc45602f45..638342d0a095 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -4106,6 +4106,23 @@
expediting. Set to zero to disable automatic
expediting.
+ ssbd= [ARM64,HW]
+ Speculative Store Bypass Disable control
+
+ On CPUs that are vulnerable to the Speculative
+ Store Bypass vulnerability and offer a
+ firmware based mitigation, this parameter
+ indicates how the mitigation should be used:
+
+ force-on: Unconditionally enable mitigation for
+ for both kernel and userspace
+ force-off: Unconditionally disable mitigation for
+ for both kernel and userspace
+ kernel: Always enable mitigation in the
+ kernel, and offer a prctl interface
+ to allow userspace to register its
+ interest in being mitigated too.
+
stack_guard_gap= [MM]
override the default stack gap protection. The value
is in page units and it defines how many pages prior