Chapter 5: BIOS Setup
5-30
Execute Disable Bit [Enabled]
XDcanpreventcertainclassesofmaliciousbufferoverowattackswhencombinedwith
asupportingOS(WindowsServer2003SP1,WindowsXPSP2,SuSELinux9.2,Redhat
Enterprise 3 Update 3).
Congurationoptions:[Disabled][Enabled]
Enable Intel(R) TXT [Disabled]
ForcestheXDfeaturelogtoalwaysreturn0whendisabled.
Congurationoptions:[Disabled][Enabled]
VMX [Enabled]
EnablestheVanderpoolTechnology.Takeseffectafterreboot.
Congurationoptions:[Disabled][Enabled]
Enable SMX [Disabled]
Enables the Safer Mode Extensions.
Congurationoptions:[Disabled][Enabled]
Hardware Prefetcher [Enabled]
ThisItemallowsyoutoturnon/offthemidlevelcache(L2)streamerprefetcher.
Congurationoptions:[Disabled][Enabled]
Adjacent Cache Prefetch [Enabled]
ThisItemallowsyoutoturnon/offprefetchingofadjacentcachelines.
Congurationoptions:[Disabled][Enabled]
DCU Streamer Prefetcher [Enabled]
ThisItemallowsyoutoenableordisableprefetcherofnextL1dataline.
Congurationoptions:[Disabled][Enabled]
DCU IP Prefetcher [Enabled]
ThisItemallowsyoutoenableordisableprefetchofnextL1linebaseduponsequentialload
history.
Congurationoptions:[Disabled][Enabled]
LLC Prefetch [Disabled]
ThisItemallowsyoutoenableordisableLLCPrefetchonallthreads.
Congurationoptions:[Disabled][Enabled]
DCU Mode [32KB 8Way Without ECC]
Congurationoptions:[32KB8WayWithoutECC][16KB4WayWithECC]
Extended APIC [Disabled]
This Item allows you to enable or disable the extended APIC support.
Congurationoptions:[Disabled][Enabled]
AES-NI [Enabled]
This Item allows you to enable or disable the AES-NI support.
Congurationoptions:[Disabled][Enabled]