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Type of computer kernel
A separation kernel is a type of security kernel used to simulate a distributed environment. The concept was introduced by John Rushby in a 1981 paper
Separation_kernel
Way of using computer memory
and kernel space. This separation primarily provides memory protection and hardware protection from malicious or errant software behaviour. Kernel space
User_space_and_kernel_space
Core of a computer operating system
kernel is a computer program at the core of a computer's operating system that always has complete control over everything in the system. The kernel is
Kernel_(operating_system)
Real-time operating system
is a commercial hard real-time operating system (RTOS) which has a separation kernel-based hypervisor that supports multiple logical partition types for
PikeOS
Free Unix-like operating system kernel
The Linux kernel is a free and open-source Unix-like kernel that is used in many computer systems worldwide. The kernel was created by Linus Torvalds
Linux_kernel
American software company
applications. The LynxSecure Hypervisor ("bare metal," type 1) and separation kernel was released in 2005. Within the LYNX MOSA.ic development framework
Lynx_Software_Technologies
Hypervisor
LynxSecure is a least privilege real-time separation kernel hypervisor from Lynx Software Technologies designed for safety and security critical applications
LynxSecure
Type of operating system kernel
hybrid kernel is an operating system kernel whose architecture attempts to combine aspects and benefits of microkernel and monolithic kernel architectures
Hybrid_kernel
Real-time operating system
the original on 2013-12-03. Retrieved 2013-12-01. "Integrity-178B Separation Kernel Security Target" (PDF). SAIC. 2011-01-31. Retrieved 2011-03-22. Official
Integrity_(operating_system)
Programming language
Tokeneer demonstrator, the secunet multi-level workstation, the Muen separation kernel and Genode block-device encrypter. Another case was implemented a
SPARK_(programming_language)
Computer security architecture
system employs one or more separation mechanisms (e.g., Separation kernel, Partitioning Communication System, physical separation) to maintain assured data
Multiple Independent Levels of Security
Multiple_Independent_Levels_of_Security
Family of Unix-like operating systems that use the Linux kernel
and open-source software Unix-like operating systems based on the Linux kernel, which was first released on 17 September 1991 by Linus Torvalds. Some members
Linux
Hypervisor designed for embedded systems
produced by companies such as Open Kernel Labs (microkernel followed by a separation kernel) and LynuxWorks (separation kernel). VirtualLogix appears to take
Embedded_hypervisor
Type of access control
differs from MAC implementations. GWV Formal Security Policy Model A Separation Kernel Formal Security Policy, David Greve, Matthew Wilding, and W. Mark
Mandatory_access_control
Computer operating system architecture
systems.[disputed – discuss] The kernel provides these and other basic services: interrupt and trap handling, separation between user and system space,
Unix_architecture
Computer security architecture
The result is a communications architecture that allows a software separation kernel and the PCS to share responsibility of security with the application
Partitioning Communication System
Partitioning_Communication_System
Finnish and American software engineer (born 1969)
American software engineer who is the creator and lead developer of the Linux kernel since 1991. He also created the distributed version control system Git.
Linus_Torvalds
stable release, June 1974) Hydra – capability-based, multiprocessing OS kernel MONECS Multi-Programming Executive (MPE) – Hewlett-Packard Operating System/Virtual
Timeline_of_operating_systems
Kernel that provides fewer services than a traditional kernel
In computer science, a microkernel (often abbreviated as μ-kernel) is the near-minimum amount of software that can provide the mechanisms needed to implement
Microkernel
Concept in computer science
In computer science, separation logic is an extension of Hoare logic, a way of reasoning about programs. It was developed by John C. Reynolds, Peter O'Hearn
Separation_logic
American computer communications company
The PCS is best implemented on a software separation operating system such as SELinux or a separation kernel. OIS's communications products are most frequently
Objective_Interface_Systems
Operating system
model, a secure system consists of isolated security domains and a separation kernel that manages interactions between them. Communication between processes
KasperskyOS
Distributed operating system
performance, while having control plane and data plane separation to improve performance. HongMeng kernel capabilities in context switching, network, application
HarmonyOS_5
Real-time operating system
safety-critical hardware state. All kernel services remain accessible to unprivileged tasks. Beyond privilege separation, STK offers optional support for
SuperTinyKernel_RTOS
Spatial statistical signal analysis
location of the data (see Mercer's theorem and the kernel trick for more information). Blind signal separation Multilinear PCA Multilinear subspace learning
Empirical orthogonal functions
Empirical_orthogonal_functions
Secure User Environment (SUE) ran on a PDP-11/34. It was very simple separation kernel designed and constructed by T4 Division of the Royal Signals and Radar
Guard_(information_security)
Formally verified capability-based microkernel
seL4's verification was inducted into the 2019 ACM SIGOPS Hall of Fame. The kernel is extremely minimal, handling only memory management, process isolation
SeL4
Collection of source code maintained as a unit
version control is not a required aspect of a codebase. Even the Linux kernel was maintained without version control for many years. When developing multiple
Codebase
Set of methods for supervised statistical learning
using the kernel trick, representing the data only through a set of pairwise similarity comparisons between the original data points using a kernel function
Support_vector_machine
Biblically-themed operating system
libre software as well as open source software. It features no kernel-user separation, so all tasks must run in ring-0-only. All tasks share one single
TempleOS
Software framework for audio
Sound Architecture (ALSA) is a software framework and part of the Linux kernel that provides an application programming interface (API) for sound card
Advanced Linux Sound Architecture
Advanced_Linux_Sound_Architecture
will be assumed in all that follows, even when the kernel is not exactly Gaussian, since separation of the dimensions is the most practical way to implement
Scale_space_implementation
Linux kernel security module
Security-Enhanced Linux (SELinux) is a Linux kernel security module that provides a mechanism for supporting access control security policies, including
SELinux
Computer security model
a Common Criteria EAL-6+ Protection Profile for a high-assurance separation kernel. "NetTop", developed by NSA in partnership with VMWare, Inc., uses
Multiple_single-level
Design principle in computer science
The separation of mechanism and policy is a design principle in computer science. It states that mechanisms (those parts of a system implementation that
Separation of mechanism and policy
Separation_of_mechanism_and_policy
Unix operating system
UNIX/32V, did not take advantage of the VAX's virtual memory capabilities. The kernel of 32V was largely rewritten to include Berkeley graduate student Özalp
Berkeley Software Distribution
Berkeley_Software_Distribution
Statistical model
isometric. From now on, let ℋ(R) be a reproducing kernel Hilbert space with positive definite kernel R. Driscoll's zero-one law is a result characterizing
Gaussian_process
Type of topological space
space where distinct points have disjoint neighbourhoods. Of the many separation axioms that can be imposed on a topological space, the "Hausdorff condition"
Hausdorff_space
Device manager for the Linux kernel
(userspace /dev) is a device manager and a device API set for the Linux kernel. As the successor of devfsd and hotplug, udev primarily manages device nodes
Udev
Food processing and manufacturing
minutes. For more efficient separation, differential moisture content between germ and endosperm is desired. Tempering of kernel leads to moisture uptake
Dry milling and fractionation of grain
Dry_milling_and_fractionation_of_grain
Shell command and system call that changes the apparent root directory
test its installation and build system. All versions of BSD that had a kernel have chroot(2). An early use of the term "jail" as applied to chroot comes
Chroot
Excessive access to computer resources
TrustedInstaller. Another method is to use a kernel driver like winring0.sys to run programs with kernel access. This driver can also be exploited to
Privilege_escalation
Theorem on extension of bounded linear functionals
different guise the theorem is known as the Hahn–Banach separation theorem or the hyperplane separation theorem and has numerous uses in convex geometry. The
Hahn–Banach_theorem
Software that manages computer hardware resources
privilege separation, and reducing shared data. Some operating system designs are more secure than others. Those with no isolation between the kernel and applications
Operating_system
Data structure in a Unix file system
parent, and each of its children. There has been uncertainty on the Linux kernel mailing list about the reason for the "i" in "inode". In 2002, the question
Inode
Method of separating components of a mixture via phase transition
Fractionation is a separation process in which a certain quantity of a mixture (of gasses, solids, liquids, enzymes, or isotopes, or a suspension) is divided
Fractionation
Process of reducing the number of random variables under consideration
graph-based kernel for Kernel PCA. More recently, techniques have been proposed that, instead of defining a fixed kernel, try to learn the kernel using semidefinite
Dimensionality_reduction
Computer programming convention
is the basis for many derivative styles. It is used in the original Unix kernel, Kernighan and Ritchie's book The C Programming Language, as well as Kernighan
Indentation_style
of separations possible. Agriculture- Gravity separation tables are used for the removal of impurities, admixture, insect damage and immature kernels from
Gravity_separation
Computer operating system
distributions have a monolithic kernel, but MkLinux is distinguished by its architecture which adapted the Linux kernel to run as a user-space server hosted
MkLinux
Method of breaking down corn kernels
Corn wet-milling is a process of breaking corn kernels into their component parts: corn oil, protein, corn starch, and fiber. It uses water and a series
Corn_wet-milling
Specialised, single address space machine images
for repeated privilege transitions to move data between user space and kernel space. Therefore, a library OS can provide improved performance by allowing
Unikernel
Security by granting only essential access
non-zero argument as demonstrated in the Version 6 Unix source code. The kernel always runs with maximum privileges since it is the operating system core
Principle_of_least_privilege
Security features as used in OpenBSD operating system
reboot runs the new kernel, and yet another kernel is built for the next boot. The internal deltas between functions inside the kernel are not where an attacker
OpenBSD_security_features
Kernel-phases are observable quantities used in high resolution astronomical imaging used for superresolution image creation. It can be seen as a generalization
Kernel-phase
Software subsystem for UNIX-like operating systems
unrelated to the concept of Windows NT kernel HALs, which handle some platform-specific core functionality within the kernel, such as interrupt routing. Traditionally
HAL_(software)
Generalized function whose value is zero everywhere except at zero
represented by integration against a kernel K z ( ζ ) {\displaystyle K_{z}(\zeta )} , the Bergman kernel. This kernel is the analog of the delta function
Dirac_delta_function
Discontinued embedded operating system by Microsoft
Windows IoT, which are based on Windows NT, Windows CE uses a different kernel. Microsoft licensed it to original equipment manufacturers (OEMs), who could
Windows_CE
Statistical tool
{\displaystyle w_{\ell }} is the Bartlett kernel and can be thought of as a weight that decreases with increasing separation between samples. Disturbances that
Newey–West_estimator
Open-source implementation of ZFS file system
Linux kernel, couldn't be merged into the mainline Linux kernel, and Linux distributions generally did not include it as a precompiled kernel module
OpenZFS
International car standard
services "ISO 15765-2:2016". ISO. Retrieved 2019-04-05. "ISO 15765-2 (ISO-TP) — The Linux Kernel documentation". docs.kernel.org. Retrieved 2025-09-12.
ISO_15765-2
The separation principle is one of the fundamental principles of stochastic control theory, which states that the problems of optimal control and state
Separation principle in stochastic control
Separation_principle_in_stochastic_control
Processing of corn for consumption as food
then "conditioned", or "tempered", by soaking the kernels in water. This facilitates the separation of the seed coat and pericarp from the endosperm.
Maize_milling
Software copyright issue
binary ABIs or other indirect means. Examples are Android's kernel space-to-user space separation via Bionic, or Linux distros which have proprietary binary
License_compatibility
Microprocessor security vulnerability
kernel code, including increased isolation of kernel memory from user-mode processes. Linux kernel developers have referred to this measure as kernel
Meltdown (security vulnerability)
Meltdown_(security_vulnerability)
Operating system
combination of these. Since version 6.8, OpenBSD has also shipped with native in-kernel WireGuard support. Shortly after OpenBSD was created, de Raadt was contacted
OpenBSD
List of Windows 10 operating system versions
new installations of Windows 10 on systems with Secure Boot enabled, all kernel-mode drivers issued after July 29, 2015, must be digitally signed with an
Windows_10_version_history
Real-time extension for the Linux kernel
Real-time application interface (RTAI) is a real-time extension for the Linux kernel, which lets users write applications with strict timing constraints for
RTAI
Overview of and topical guide to machine learning
model Kernel adaptive filter Kernel density estimation Kernel eigenvoice Kernel embedding of distributions Kernel method Kernel perceptron Kernel random
Outline_of_machine_learning
Distance from a data point to a decision boundary
In machine learning, the margin of a data point is a measure of its separation from a classifier's decision boundary. A common distinction is made between
Margin_(machine_learning)
Concept in computer security
hardware to support it and ran the 64-bit kernel or the 32-bit server kernel. The 32-bit PAE desktop kernel (linux-image-generic-pae) in Ubuntu 9.10 and
Executable-space_protection
Type of random number generator
software running on a general-purpose computer. NPTRNGs are found in the kernels of popular operating systems that are expected to run on any generic CPU
Non-physical true random number generator
Non-physical_true_random_number_generator
Family of operating systems for IBM PC compatibles
structured such that there was a separation between the system specific device driver code (IO.SYS) and the DOS kernel (MSDOS.SYS). Microsoft provided
DOS
Species of wheat used for food
shrunken and broken kernels. Then, it is tempered to a desired moisture content, toughening the seed coat for efficient separation of bran and endosperm
Durum_wheat
Computer operating system
system APIs on top of a common kernel (Win32, OS/2 and POSIX in NT's case) MICA and NT shared the separation of the kernel from the executive, the use of
DEC_MICA
OS-level virtualisation
into several independent mini-systems called jails, all sharing the same kernel, with very little overhead. It is implemented through a system call, jail(2)
FreeBSD_jail
Italian-American programmer and original developer of the FreeDOS kernel
DOS emulator written in the C language and subsequently adapted as the kernel of the FreeDOS operating system and a number of other projects including
Pat_Villani
2026 information security incident
vulnerabilities across the userspace software, V8 JavaScript engine, and the Linux kernel. OpenAI was running an internal evaluation based on this benchmark when
OpenAI rogue agent breach of Hugging Face
OpenAI_rogue_agent_breach_of_Hugging_Face
Software development process
together" Shared Kernel: "Designate with an explicit boundary some subset of the domain model that the teams agree to share. Keep this kernel small." Customer/Supplier
Domain-driven_design
Real-time operating system
aspects. Runs on 8-bit, 16-bit, and 32-bit CPUs. Clear separation between user mode and supervisor (kernel) mode. Dynamic use of individually and separately
OS-9
capabilities, which were necessary to run large programs such as Franz Lisp. The kernel of 32V was largely rewritten by Berkeley graduate student Özalp Babaoğlu
History of the Berkeley Software Distribution
History_of_the_Berkeley_Software_Distribution
Approach to restricting system access to authorized users
S2CID 6427232. D.R. Kuhn (1998). "Role based access control on MLS systems without kernel changes". Proceedings of the third ACM workshop on Role-based access control
Role-based_access_control
Paradigm in machine learning
letting y=signf(x). TSVM then selects f∗(x)=h∗(x)+b from a reproducing kernel Hilbert space ℋ by minimizing the regularized empirical risk:
Weak_supervision
Flash memory file system
flash file system initially developed by Samsung Electronics for the Linux kernel. The motive for F2FS was to build a file system that, from the start, takes
F2FS
Discontinued mobile operating system
Layer. The inclusion of device drivers means the kernel is not a true microkernel. The EKA2 real-time kernel, which has been termed a nanokernel, contains
Symbian
Processor security vulnerability
issue at the cost of performance. Mitigations were applied to the Linux kernel, the Windows operating system, and some vulnerable user-mode applications
Spectre (security vulnerability)
Spectre_(security_vulnerability)
Tree-based computer data structure
maple trees [LWN.net]". lwn.net. "Maple Tree — The Linux Kernel documentation". docs.kernel.org. "Introducing the Maple Tree [LWN.net]". lwn.net. This
B-tree
Quadratic time-frequency representation
Robert J. Marks II in 1990. Its name refers to the support of the smoothing kernel in the time-lag plane. The cone constraint permits temporal smoothing while
Cone-shape distribution function
Cone-shape_distribution_function
Cloud computing concept
But, collectively, multiple containers share a common operating system kernel (OS). In recent times, containerization technology has been widely adopted
Containerization_(computing)
statistics, kernel Fisher discriminant analysis (KFD), also known as generalized discriminant analysis and kernel discriminant analysis, is a kernelized version
Kernel Fisher discriminant analysis
Kernel_Fisher_discriminant_analysis
Computer safety concept
key feature of this arrangement is that the file descriptor table is in kernel memory and cannot be directly manipulated by the user program. In traditional
Capability-based_security
damaged kernels. Images of mold and insect infestation in maize and wheat kernels Kernels which contain any mold on the exposed part of the kernel are considered
Grain_damage
monolithic kernel architecture, apart from DragonFly BSD which feature hybrid kernels. The various open source BSD projects generally develop the kernel and
Comparison of BSD operating systems
Comparison_of_BSD_operating_systems
Chemical compound
Haq, Muhammad Abdul; Hasnain, Abid (2016). "Biodegradable film from mango kernel starch: Effect of plasticizers on physical, barrier, and mechanical properties"
Sodium_metabisulfite
OS-level virtualisation
have its own separate kernel (in contrast to a hardware virtual machine), applications that require direct manipulation of kernel features, such as the
Solaris_Containers
Filter in digital signal processing
filter in Paint.NET (B-spline) Ringing artifacts Anisotropic filtering Kernel (image processing) Mitchell, Don; Netravali, Arun (June 1988). "Reconstruction
Mitchell–Netravali_filters
Corwin; A. Jones; R. Levin; C. Pierson; F. Pollack (June 1974). "HYDRA: the kernel of a multiprocessor operating system". Communications of the ACM. 17 (6):
Protection_mechanism
Type of distributed file system
library, both of which are written entirely of user-level code. A Linux kernel module and pvfs-client process allow the file system to be mounted and used
Parallel_Virtual_File_System
Type-1 hypervisor
self-governing. Since version 3.0 of the Linux kernel, Xen support for dom0 and domU exists in the mainline kernel. Internet hosting service companies use hypervisors
Xen
Signal processing computational method
Hérault and Christian Jutten in 1985. ICA is a special case of blind source separation. A common example application of ICA is the "cocktail party problem" of
Independent component analysis
Independent_component_analysis
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