There is a special process, the Kernelprocess, whose threads run at supervisor privilege level. This process normally contains two threads.
有一个特殊的进程，内核进程，它的线程运行在超级用户级别。这个进程通常包括两个线程。
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SSI solutions modify almost every area of kernel: process management, filesystem, memory management, scheduler, etc. Emulators simplify the deployment by letting the kernel processes run unchanged.