I believe the best and worst thing about Linux is its hard distinction between kernel space and user space. Without that distinction, Linux never would have become the most leveraged operating system ...

A new interface for implementing device drivers outside the kernel has one project saving about 5,000 lines of code. The concept of supporting user-space drivers has appeared on LWN a few times before ...

(1) The memory allocated to applications in a computer that uses an operating system such as macOS or Linux. Such operating systems keep their kernel in one area of memory (kernel space) with user ...

If you’ve ever wondered how much memory a process uses, you’ve probably used a form of task manager or system monitor. System monitors can be useful to identify resource hogs, but are often less ...

There's an effort under way to reduce and ultimately remove all system call invocations from within kernel space. Dominik Brodowski was leading this effort, and he posted some patches to remove a lot ...