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-rw-r--r--Documentation/admin-guide/kernel-parameters.txt11
1 files changed, 6 insertions, 5 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 19192b39952a..87d46cb76121 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -1946,11 +1946,12 @@
By default, super page will be supported if Intel IOMMU
has the capability. With this option, super page will
not be supported.
- sm_on [Default Off]
- By default, scalable mode will be disabled even if the
- hardware advertises that it has support for the scalable
- mode translation. With this option set, scalable mode
- will be used on hardware which claims to support it.
+ sm_on
+ Enable the Intel IOMMU scalable mode if the hardware
+ advertises that it has support for the scalable mode
+ translation.
+ sm_off
+ Disallow use of the Intel IOMMU scalable mode.
tboot_noforce [Default Off]
Do not force the Intel IOMMU enabled under tboot.
By default, tboot will force Intel IOMMU on, which