The second architecture is called user space device emulation (see Figure 2).
第二个架构称为用户空间设备模拟(见图2)。
The VMM also implements device emulation for devices made available to each guest.
VMM还为每个来宾可用的设备实现了设备模拟。
The hypervisor implements the back-end drivers for the particular device emulation.
Hypervisor为特定的设备模拟实现后端驱动程序。
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