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Return to Kernel space, Userspace

• User space: “The virtual memory address space for processes.” (SysPrfBGrg 2021)

Snippet from Wikipedia: Userland

Userland may refer to:

• Radio UserLand, a computer program to aid maintaining blogs or podcasts
• UserLand Software, a U.S. software company specializing in web applications
• UserLAnd Technologies, a mobile app that allows Linux programs to run on mobile devices
• User space, operating system software that does not belong in the kernel

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Snippet from Wikipedia: User space and kernel space

A modern computer operating system usually uses virtual memory to provide separate address spaces called user space and kernel space. Primarily, this separation serves to provide memory protection and hardware protection from malicious or errant software behaviour.

Kernel space is strictly reserved for running a privileged operating system kernel, kernel extensions, and most device drivers. In contrast, user space is the memory area where application software and some drivers execute, typically one address space per process.

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