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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
Mode Based Execution Control (MBEC) is an extension to x86 SLAT implementations first available in Intel Kaby Lake and AMD Zen+ CPUs (known on the latter as Guest Mode Execute Trap or GMET). [10] The extension extends the execute bit in the extended page table (guest page table) into 2 bits - one for user execute, and one for supervisor execute.
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Model ()Launch Architecture & fab Transistors & die size Core Fillrate [a] [b] [c] Processing power [a] [d] () Memory TDP Bus interface Graphic output ports Config [e ...
The XOP (eXtended Operations [1]) instruction set, announced by AMD on May 1, 2009, is an extension to the 128-bit SSE core instructions in the x86 and AMD64 instruction set for the Bulldozer processor core, which was released on October 12, 2011. [2] However AMD removed support for XOP from Zen (microarchitecture) onward. [3]