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SeaOS is a simple operating system developed for fast prototyping of research concepts. SeaOS implements a POSIX-like interface in less than 30,000 lines of C kernel code. Its userspace is complete enough to be self-hosting and includes ports of gcc, bash, grub, binutils, and coreutils. SeaOS runs on modern x86 and x86_64 architectures and is designed to support our lab's operating system research...
Security, simplicity, efficiency, are three important aspects of system architecture design, especially for dedicated security systems. The legacy horizontal-layered architectures (e.g., microkernel model) suffer from lacking of many desired features, such as flexibility, security and deployability. In this paper, we propose a new kernel model with vertical architecture, called ultra-kernel model,...
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