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20 Chapter 2
Processor Configuration
Parameter Description Option
Hardware Prefetcher Enables or disables the speculative unit within the processor. Enabled
Disabled
Adjacent Cache Line
Prefetch
When Enabled, cache lines are fetched in pairs (even line + odd line).
When Disabled, only current cache line required is fetched.
Enabled
Disabled
Max CPUID Value Limit Enables or disables legacy operating system to boot processors with
extended CPUID functions.
Disabled
Enabled
Intel VT Enables or disables the Virtualization Technology (VT) availability. If
enabled, a virtual machine manager (VMM) can utilize the additional
hardware virtualization capabilities provided by this technology.
Note: A full reset is required to change the setting.
Enabled
Disabled
Intel XD Bit When Enabled, the processor disables code execution when a worm
attempts to insert a code in the buffer preventing damage and worm
propagation.
When Disabled, the processor forces the Execute Disable Bit feature
flag to always return to 0.
Enabled
Disabled
Core Multi-Processing Enables or disables core multi-processing function. Enabled
Disabled
PECI Enables or disables the PECi function. Enabled
Disabled
Intel EIST Enables or disables the EIST function. Enabled
Disabled