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Chapter 4: UEFI BIOS
CPU Configuration
CPU Configuration
SMT Control
Use this setting to specify Simultaneous Multithreading. Options include Disabled, Enabled
and Auto.
Core Performance Boost
This setting is used to configure for Core Performance Boost. Options include Disabled and
Auto.
Global C-state Control
This setting is used to configure for Global C-state Control. Options include Disabled, Enabled
and Auto.
SEV-ES ASID Space Limit
SEV-ES and SNP guests must use ASIDs in the range 1 through (this value -1). SEV guests
must use ASIDs in the range of this value through 1006. To have all ASIDs support SEV-ES
or SNP guests, set this value to 1007. The default is 1: all SEV guests and no SEV-ES or
SNP guests.
Local APIC Mode
Use this setting to adjust local APIC operation mode. Options include Compatibility, xAPIC,
x2APIC and Auto.
PPIN Opt-in
The Protected Processor Identification Number (PPIN) is a unique serial number for each
processor. The options include Disabled, Enabled and Auto.
SNP Memory (RMP Table) Coverage
Select Enabled to set the entire system memory covered. The options include Disabled,
Enabled, Custom and Auto.
SMEE
This feature sets the option to enable or disable Secure Memory Encryption. The options are
Disabled, Enabled and Auto.
AVX512
The options include Disabled, Enabled, and Auto.
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