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-rw-r--r--Documentation/hw-vuln/mds.rst3
-rw-r--r--Documentation/kernel-parameters.txt6
2 files changed, 7 insertions, 2 deletions
diff --git a/Documentation/hw-vuln/mds.rst b/Documentation/hw-vuln/mds.rst
index ff6bfdb97eee..aec9e49256b5 100644
--- a/Documentation/hw-vuln/mds.rst
+++ b/Documentation/hw-vuln/mds.rst
@@ -260,6 +260,9 @@ time with the option "mds=". The valid arguments for this option are:
It does not automatically disable SMT.
+ full,nosmt The same as mds=full, with SMT disabled on vulnerable
+ CPUs. This is the complete mitigation.
+
off Disables MDS mitigations completely.
============ =============================================================
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 7164790b82c0..4c134700c120 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -2341,8 +2341,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
This parameter controls the MDS mitigation. The
options are:
- full - Enable MDS mitigation on vulnerable CPUs
- off - Unconditionally disable MDS mitigation
+ full - Enable MDS mitigation on vulnerable CPUs
+ full,nosmt - Enable MDS mitigation and disable
+ SMT on vulnerable CPUs
+ off - Unconditionally disable MDS mitigation
Not specifying this option is equivalent to
mds=full.