Cisco Systems UCSCPCIEBTG manual Advanced Bios Parameters for C22 and C24 Servers, Execute Disable

BIOS Parameters by Server Model

Advanced BIOS Parameters for C22 and C24 Servers

Advanced BIOS Parameters for C22 and C24 Servers

Processor Configuration Parameters
Name	Description

Intel Hyper-Threading Technology Whether the processor uses Intel Hyper-Threading Technology, which allows multithreaded software applications to execute threads in parallel within each processor. This can be one of the following:

	• Disabled—The processor does not permit hyperthreading.
	• Enabled—The processor allows for the parallel execution
	of multiple threads.
	We recommend that you contact your operating system vendor
	to make sure the operating system supports this feature.
Number of Enabled Cores	Allows you to disable one or more of the physical cores on the
	server. This can be one of the following:
	• All—Enables all physical cores. This also enables Hyper
	Threading on the associated logical processor cores.
	• 1 through n—Specifies the number of physical processor
	cores that can run on the server. Each physical core has
	an associated logical core.
	To disable Hyper Threading and have only one logical
	processor core running on the server, select 1.
	We recommend that you contact your operating system vendor
	to make sure the operating system supports this feature.
Execute Disable	Classifies memory areas on the server to specify where
	application code can execute. As a result of this classification,
	the processor disables code execution if a malicious worm
	attempts to insert code in the buffer. This setting helps to prevent
	damage, worm propagation, and certain classes of malicious
	buffer overflow attacks. This can be one of the following:
	• Disabled—The processor does not classify memory areas.
	• Enabled—The processor classifies memory areas.
	We recommend that you contact your operating system vendor
	to make sure the operating system supports this feature.

	Cisco UCS C-Series Servers Integrated Management Controller CLI Configuration Guide, Release 1.5
184	OL-28893-01