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  2. List of Linux-supported computer architectures - Wikipedia

    en.wikipedia.org/wiki/List_of_Linux-supported...

    The relevant term is of the porting target is computer architecture; it comprises the instruction set(s) and the microarchitecture(s) of the processor(s), at least of the CPU. The target also comprises the "system design" of the entire system, be it a supercomputer, a desktop computer or some SoC, e.g. in case some unique bus is being used. In ...

  3. Comparison of operating system kernels - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_operating...

    Linux distributions that have highly modified kernels — for example, real-time computing kernels — should be listed separately. There are also a wide variety of minor BSD operating systems, many of which can be found at comparison of BSD operating systems.

  4. CPU modes - Wikipedia

    en.wikipedia.org/wiki/CPU_modes

    Hypervisor mode is used to support virtualization, allowing the simultaneous operation of multiple operating systems. Kernel and User In kernel mode, the CPU may perform any operation allowed by its architecture; any instruction may be executed, any I/O operation initiated, any area of memory accessed, and so on.

  5. Linux kernel - Wikipedia

    en.wikipedia.org/wiki/Linux_kernel

    The Linux kernel is a free and open source, [11]: 4 Unix-like kernel that is used in many computer systems worldwide. The kernel was created by Linus Torvalds in 1991 and was soon adopted as the kernel for the GNU operating system (OS) which was created to be a free replacement for Unix.

  6. Category:Operating systems by architecture - Wikipedia

    en.wikipedia.org/wiki/Category:Operating_systems...

    Linux distributions by processor architecture (6 C) A. ARM operating systems (13 C, 111 P) M. MIPS operating systems (2 C, 33 P) P. Power ISA operating systems (1 C, 5 P)

  7. User space and kernel space - Wikipedia

    en.wikipedia.org/wiki/User_space_and_kernel_space

    Protection rings, in turn, are implemented using CPU modes. Typically, kernel space programs run in kernel mode, also called supervisor mode; normal applications in user space run in user mode. Some operating systems are single address space operating systems—they have a single address space for all user-mode code. (The kernel-mode code may ...

  8. Monolithic kernel - Wikipedia

    en.wikipedia.org/wiki/Monolithic_kernel

    A monolithic kernel is an operating system architecture with the entire operating system running in kernel space. The monolithic model differs from other architectures such as the microkernel [1] [2] in that it alone defines a high-level virtual interface over computer hardware. A set of primitives or system calls implement all operating system ...

  9. Unix architecture - Wikipedia

    en.wikipedia.org/wiki/Unix_architecture

    A Unix architecture is a computer operating system system architecture that embodies the Unix philosophy. It may adhere to standards such as the Single UNIX Specification (SUS) or similar POSIX IEEE standard. No single published standard describes all Unix architecture computer operating systems — this is in part a legacy of the Unix wars.