Definition - What does Nano Kernel mean?
A nanokernel is a small kernel that offers hardware abstraction, but without system services. Larger kernels are designed to offer more features and manage more hardware abstraction. Modern microkernels lack system services as well, hence, the terms microkernal and nanokernal have become analogous.
Techopedia explains Nano Kernel
Historically, the term nanokernel denotes:
- A kernel in which the total volume of kernel code, that is, the code being executed in the hardware's privileged mode, is quite small.
- A virtualization layer beneath an operating system, which is more precisely called a hypervisor.
- A hardware abstraction layer (HAL), which forms the lowest level portion of a kernel.
- Occasionally, the term nanokernel is used to describe a kernel that supports a nanosecond clock resolution.
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