1 files changed, 3 insertions, 0 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 882a40d405c8..9ca3e74a10e1 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1070,6 +1070,9 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                                 VIA, nVidia)
                         verbose: show contents of HPET registers during setup
 
+        hpet_mmap=      [X86, HPET_MMAP] Allow userspace to mmap HPET
+                        registers.  Default set by CONFIG_HPET_MMAP_DEFAULT.
+
         hugepages=      [HW,X86-32,IA-64] HugeTLB pages to allocate at boot.
         hugepagesz=     [HW,IA-64,PPC,X86-64] The size of the HugeTLB pages.
                         On x86-64 and powerpc, this option can be specified