Design
By itself, KVM does not perform any emulation. Instead, a user space program uses the /dev/kvm interface to set up the guest VM's address space, feeds it simulated I/O and maps its video display back onto the host's. QEMU versions 0.10.1 and later make use of this.
Read more about this topic: Kernel-based Virtual Machine
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—Sidney Buchman (1902–1975)
“What but design of darkness to appall?—
If design govern in a thing so small.”
—Robert Frost (1874–1963)
“Westerners inherit
A design for living
Deeper into matter—
Not without due patter
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—Robert Frost (1874–1963)