The Heart of the OS: Kernel Architectures, Services, and Security

This video provides a comprehensive exploration of the kernel, the central program at the core of a computer’s operating system that facilitates interactions between hardware and software components.
We dive into the fundamental distinction between user mode and kernel mode, explaining how the kernel uses privileged execution to manage resources safely while protecting the system from malfunctioning applications.
The video examines the evolution and trade-offs of major kernel architectures, including:
Monolithic Kernels: Such as Linux, where all OS services run in a single address space for high performance.
Microkernels: Which prioritize modularity and resilience by running only essential services in kernel space and moving others to user-space servers.
Hybrid Kernels: Like Windows NT, which blend these approaches to balance speed and modularity.
Viewers will also gain insight into essential kernel functions, from CPU scheduling and interrupt handling to memory management techniques like paging and virtual addressing.
Finally, we look toward the future of kernel design, discussing programmable security through eBPF and the development of LionsOS, a highly modular, formally verified OS designed for high-performance, security-critical systems

Видео The Heart of the OS: Kernel Architectures, Services, and Security канала MS-DigiNotes