What is the function of supervisor mode in security systems?

Supervisor mode, also known as kernel mode, is a privileged operational level within a computer's architecture where the CPU has unrestricted access to all hardware and system resources. This mode allows processes to execute with a higher level of privilege than those running at the user level.

The primary function of supervisor mode is to manage system resources, execute critical tasks, and facilitate communication between hardware and software components securely and efficiently. In this context, processes running in an inner protected ring refer to those operations that require direct access to system resources, including memory management, interrupt handling, and executing sensitive instructions that could impact system security and stability.

This privileged access is crucial for maintaining the integrity and security of the system, as it allows the operating system to implement protective measures and controls that prevent unauthorized access and potential misuse of resources by less trusted applications running at the user level.