Messages in this thread Patch in this message | | | From | Perry Yuan <> | Subject | [PATCH 04/11] Documentation: PM: amd-pstate: introducing recommended reboot requirement during driver switch | Date | Tue, 7 May 2024 15:15:20 +0800 |
| |
It is highly recommended to reboot the system when switching between the 'amd-pstate' and 'acpi-cpufreq' drivers to avoid potential unexpected issues. Rebooting will ensure that the system properly applies the changes and allows for a seamless transition between the drivers.
Reported-by : Reported-by: Artem S. Tashkinov <aros@gmx.com> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=215801 Signed-off-by: Perry Yuan <perry.yuan@amd.com> --- Documentation/admin-guide/pm/amd-pstate.rst | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/Documentation/admin-guide/pm/amd-pstate.rst b/Documentation/admin-guide/pm/amd-pstate.rst index 1e0d101b020a..2695feec1baa 100644 --- a/Documentation/admin-guide/pm/amd-pstate.rst +++ b/Documentation/admin-guide/pm/amd-pstate.rst @@ -299,6 +299,10 @@ module which supports the new AMD P-States mechanism on most of the future AMD platforms. The AMD P-States mechanism is the more performance and energy efficiency frequency management method on AMD processors. +When users attempt to switch from the acpi-cpufreq driver to the amd-pstate driver's working mode, +it is recommended to reboot the system. This is to ensure that any low-level power management +control states are properly switched to pstate control. By rebooting, the firmware can initialize +with optimal power states, reducing the likelihood of unexpected issues. ``amd-pstate`` Driver Operation Modes ====================================== -- 2.34.1
| |