hardware virtualization


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hardware virtualization

Circuits in the CPU and controller chips that enhance the running of multiple operating systems (multiple virtual machines). They deal with functions such as saving and restoring the CPU state upon transitions between the guest OS and the virtual machine monitor (VMM). Available in IBM mainframes for decades as well as in Sun servers and other machines, hardware virtualization came to the huge x86 market in 2004 with Intel's Virtualization Technology (see VT). AMD followed in 2006 with AMD Virtualization (see AMD-V).

The First x86 Virtualization
Starting with the Intel 386 in 1985, the x86 CPU family included a Virtual 8086 Mode architecture, which added hardware support for running 16-bit DOS applications in a 32-bit Windows machine. However, this mode did not provide virtual machines for Windows applications (see Virtual 8086 Mode).

Virtual Machine Vs. Virtual Memory
Hardware virtualization and virtual machine are synonymous; however, virtual memory is not. Virtual memory, which is also built into the hardware, deals with extending main memory to disk (see virtual memory). See virtual machine and virtualization.
References in periodicals archive ?
If you decide to buy a new system and opt for a 64-bit processor, and do not check with your vendors in advance to see whether their software runs properly on 64-bit hardware, you'll have to hope that your new system's processor supports the hardware virtualization that XP Mode requires.
The advanced software virtualization in LynxSecure is integrated with the hardware virtualization technologies, such as vt-x and vt-d, on the Intel processors to give native performance and functionality of all the OSes that are running as "guests.
Wind River Hypervisor supports a variety of different processor architectures, taking advantage of hardware virtualization support when applicable.
Taking advantage of the hardware virtualization capabilities of the PoC platform, LynxSecure offers the ability to run guest operating systems at near-native performance.
Virtutech Simics allows for a revolutionary change in the product development process at a full system level rather than a component level and is the only commercial solution that delivers the four most important criteria for successful deployment of hardware virtualization in the electronics equipment development process: speed, scalability, model availability, and control.
Taking advantage of the hardware virtualization capabilities of the Intel[R] Core[TM] i7, LynxSecure offers the ability to run guest operating systems at near-native performance.
Unlike traditional hardware virtualization, Xenocode technology exploits the host operating system environment to eliminate the need to emulate hardware or package operating systems with applications.
The combination of Mobileyes VPs and MIPS CPUs enables us to provide unrivalled computing power on a single processor while maintaining a very low power budget, and the hardware virtualization capability in the I6500 CPUs provides a solid foundation for an open software platform with multiple operating systems.
LynxSecure is the undisputed performance leader for secure embedded and desktop systems utilizing hardware virtualization technology (VT) and supporting multiple cores.
Additionally, AMD-V[TM], a feature on all AMD Phenom[TM], AMD Phenom[TM] II, AMD Turion[TM], AMD Athlon[TM] and AMD Athlon[TM] II processors, provides hardware virtualization support to help streamline PC management through Windows 7 Virtual PC and Windows XP mode.
Virtutech Simics[R] allows for a revolutionary change in the product development process at a full system level rather than a component level and is the only commercial solution that delivers the four most important criteria for successful deployment of hardware virtualization in the electronics equipment development process: speed, scalability, model availability, and control.

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