Техническая Спецификация для Intel E3-1105C AV8062701048800

Модели

AV8062701048800

Technologies

Intel

Xeon

and Intel

Core™ Processors For Communications Infrastructure

May 2012

Datasheet - Volume 1 of 2

Document Number: 327405

001

4.0

Technologies

4.1

Intel

Virtualization Technology

Intel

Virtualization Technology (Intel

VT) makes a single system appear as multiple

independent systems to software. This allows multiple, independent operating systems

to run simultaneously on a single system. Intel

VT comprises technology components

to support virtualization of platforms based on Intel architecture microprocessors and

chipsets. Intel

Virtualization Technology (Intel

VT) for IA-32, Intel

64 and Intel

Architecture (Intel

VT-x) added hardware support in the processor to improve the

virtualization performance and robustness. Intel

Virtualization Technology for

Directed I/O (Intel

VT-d) adds chipset hardware implementation to support and

improve I/O virtualization performance and robustness.

Intel

VT-x specifications and functional descriptions are included in the Intel

64 and

IA-32 Architectures Software Developer’s Manual, Volume 3B and is available at

http://www.intel.com/products/processor/manuals/index.htm

The Intel

VT-d spec and other VT documents can be referenced at

http://www.intel.com/technology/platform-technology/virtualization/index.htm

4.1.1

Intel

VT-x Objectives

Intel

VT-x provides hardware acceleration for virtualization of IA platforms. Virtual

Machine Monitor (VMM) can use Intel

VT-x features to provide improved reliable

virtualized platform. By using Intel

VT-x, a VMM is:

• Robust: VMMs no longer need to use paravirtualization or binary translation. This

means that they will be able to run off-the-shelf OSs and applications without any

special steps.

• Enhanced: Intel

VT enables VMMs to run 64-bit guest operating systems on IA

x86 processors.

• More reliable: Due to the hardware support, VMMs can now be smaller, less

complex, and more efficient. This improves reliability and availability and reduces

the potential for software conflicts.

• More secure: The use of hardware transitions in the VMM strengthens the isolation

of VMs and further prevents corruption of one VM from affecting others on the

same system.

4.1.2

Intel

VT-x Features

The processor core supports the following Intel

VT-x features:

• Extended Page Tables (EPT)

— EPT is hardware assisted page table virtualization
— It eliminates VM exits from guest OS to the VMM for shadow page-table

maintenance