1 files changed, 4 insertions, 0 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 1150444a21ab..40066ceb48fe 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -893,6 +893,10 @@ and is between 256 and 4096 characters. It is defined in the file
                 nomerge
                 forcesac
                 soft
+                fullflush
+                        Flush IO/TLB at every deallocation
+                nofullflush
+                        Flush IO/TLB only when addresses are reused (default)
 
 
         intel_iommu=    [DMAR] Intel IOMMU driver (DMAR) option