Because the WSv hypervisor takes advantage of VT and “Pacifica” technology, more of the work of virtualizing multiple operating systems is performed by system hardware and less needs to be performed by the virtualization stack and hypervisor.
Virtualization platforms that rely on software emulation of hardware must frequently interrupt guest operating systems by performing on-the-fly translation of hardware requests into a form that is compatible with the virtualization environment. Intel VT and AMD “Pacifica” hardware technology render much of this on-the-fly translation unnecessary by incorporating virtualization extensions to the x86 architecture. This means that virtualization platforms that are designed for VT and “Pacifica” have lower overhead, and virtual machines run more efficiently. This collaboration between hardware virtualization features and the software virtualization components of WSv creates a high-performance virtualization platform.
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