1 files changed, 5 insertions, 0 deletions

diff --git a/Documentation/x86/x86_64/boot-options.txt b/Documentation/x86/x86_64/boot-options.txt
index e9e8ddbbf376..1228b22e142b 100644
--- a/Documentation/x86/x86_64/boot-options.txt
+++ b/Documentation/x86/x86_64/boot-options.txt
@@ -176,6 +176,11 @@ ACPI
 
   acpi=noirq    Don't route interrupts
 
+  acpi=nocmcff  Disable firmware first mode for corrected errors. This
+                disables parsing the HEST CMC error source to check if
+                firmware has set the FF flag. This may result in
+                duplicate corrected error reports.
+
 PCI
 
   pci=off               Don't use PCI