1 files changed, 9 insertions, 0 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 5fdf714f40a0..d006bb22f3ca 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1446,6 +1446,15 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        disable
                          Do not enable intel_pstate as the default
                          scaling driver for the supported processors
+                       force
+                         Enable intel_pstate on systems that prohibit it by default
+                         in favor of acpi-cpufreq. Forcing the intel_pstate driver
+                         instead of acpi-cpufreq may disable platform features, such
+                         as thermal controls and power capping, that rely on ACPI
+                         P-States information being indicated to OSPM and therefore
+                         should be used with caution. This option does not work with
+                         processors that aren't supported by the intel_pstate driver
+                         or on platforms that use pcc-cpufreq instead of acpi-cpufreq.
                        no_hwp
                          Do not enable hardware P state control (HWP)
                          if available.