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CPU C State Control Interface Instruction Table
Interface Parameters
Function Description
Default
Monitor/Mwait Support
CPU Monitor/Mwait support on/off settings,
option parameters:
Enabled
Disabled
Enabled
Package C State limit
C state limit settings, option parameters:
C0/C1 state
C2 state
C6 (non retention) state
C6 (Retention) state
C6
(Retention)
state
CPU C3 report
Report CPU C3 state to OS on/off settings,
option parameters:
Enabled
Disabled
Disabled
CPU C6 report
Report CPU C6 state to OS on/off settings,
option parameters:
Enabled
Disabled
Enabled
Enhanced Halt State
(C1E)
C1E on/off settings, option parameters:
Enabled
Disabled
Enabled
3. 2.3.2.3 Energy Performance Tuning
Energy Performance Tuning interface is used to set the options related with CPU
performance and energy saving tuning.