Above the kernel, running in user mode, are the device drivers, each one running as a separate process tightly restricted by the memory management hardware to accessing only its own memory.

设备驱动处于内核之上，运行在用户态。每个驱动都作为单独的进程运行，受到内存管理硬件的严格约束，只能访问自己拥有的内存。

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Above the kernel, running in user mode, are the device drivers, each one running as a separate process tightly restricted by the memory management hardware to accessing only its own memory.

设备驱动处于内核之上，运行在用户态。每个驱动都作为单独的进程运行，受到内存管理硬件的严格约束，只能访问自己拥有的内存。

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