1 files changed, 4 insertions, 0 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index e30d8fe4e4b1..f7492cd10093 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -847,6 +847,10 @@ and is between 256 and 4096 characters. It is defined in the file
                         than 32 bit addressing. The default is to look
                         for translation below 32 bit and if not available
                         then look in the higher range.
+                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.
 
         io_delay=       [X86-32,X86-64] I/O delay method
                 0x80