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-rw-r--r--Documentation/admin-guide/kernel-parameters.txt9
1 files changed, 2 insertions, 7 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index bdb22006f713..a04d2748c99a 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -290,10 +290,7 @@
amd_iommu= [HW,X86-64]
Pass parameters to the AMD IOMMU driver in the system.
Possible values are:
- fullflush - enable flushing of IO/TLB entries when
- they are unmapped. Otherwise they are
- flushed before they will be reused, which
- is a lot of faster
+ fullflush - Deprecated, equivalent to iommu.strict=1
off - do not initialize any AMD IOMMU found in
the system
force_isolation - Force device isolation for all
@@ -1944,9 +1941,7 @@
this case, gfx device will use physical address for
DMA.
strict [Default Off]
- With this option on every unmap_single operation will
- result in a hardware IOTLB flush operation as opposed
- to batching them for performance.
+ Deprecated, equivalent to iommu.strict=1.
sp_off [Default Off]
By default, super page will be supported if Intel IOMMU
has the capability. With this option, super page will