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Instruction set extensions that have been added to the x86 instruction set in order to support hardware virtualization.These extensions provide instructions for entering and leaving a virtualized execution context and for loading virtual-machine control structures (VMCSs), which hold the state of the guest and host, along with fields which control processor behavior within the virtual machine.
The AMD Lightweight Profiling (LWP) feature was introduced in AMD Bulldozer and removed in AMD Zen. On all supported CPUs, the latest available microcode updates have disabled LWP due to Spectre mitigations. [31] These instructions are available in Ring 3, but not available in Real Mode and Virtual-8086 mode. All of them use the XOP prefix.
x86 virtualization is the use of hardware-assisted virtualization capabilities on an x86/x86-64 CPU.. In the late 1990s x86 virtualization was achieved by complex software techniques, necessary to compensate for the processor's lack of hardware-assisted virtualization capabilities while attaining reasonable performance.
x86-64 with Intel VT-x or AMD-V, ARMv8 [4] x86-64, (up to 64 physical CPUs), ARMv8 Windows 8, 8.1, 10, and Windows Server 2012 w/Hyper-V role, Microsoft Hyper-V Server Supported drivers for Windows NT, FreeBSD, Linux (SUSE 10, RHEL 6, CentOS 6) Proprietary. Component of various Windows editions. INTEGRITY: Green Hills Software: ARM, x86, PowerPC
Advanced Vector Extensions (AVX, also known as Gesher New Instructions and then Sandy Bridge New Instructions) are SIMD extensions to the x86 instruction set architecture for microprocessors from Intel and Advanced Micro Devices (AMD).
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The revised instruction set no longer carries the name SSE5, which has been criticized for being misleading, but most of the instructions in the new revision are functionally identical to the original SSE5 specification—only the way the instructions are coded differs. The planned additions to the AMD instruction set consists of three subsets: