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authorJosh Poimboeuf <jpoimboe@redhat.com>2019-04-02 09:59:33 -0500
committerThomas Gleixner <tglx@linutronix.de>2019-04-02 20:02:36 +0200
commitd71eb0ce109a124b0fa714832823b9452f2762cf (patch)
treee5efa2ea879a545d3eb552a83343c91f873e7ffb /Documentation/admin-guide/hw-vuln
parent5999bbe7a6ea3c62029532ec84dc06003a1fa258 (diff)
x86/speculation/mds: Add mds=full,nosmt cmdline option
Add the mds=full,nosmt cmdline option. This is like mds=full, but with SMT disabled if the CPU is vulnerable. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Tyler Hicks <tyhicks@canonical.com> Acked-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'Documentation/admin-guide/hw-vuln')
-rw-r--r--Documentation/admin-guide/hw-vuln/mds.rst3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/admin-guide/hw-vuln/mds.rst b/Documentation/admin-guide/hw-vuln/mds.rst
index 1de29d28903d..244ab47d1fb3 100644
--- a/Documentation/admin-guide/hw-vuln/mds.rst
+++ b/Documentation/admin-guide/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.
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