memory access control

См. также в других словарях:

• Access control — is the ability to permit or deny the use of a particular resource by a particular entity. Access control mechanisms can be used in managing physical resources (such as a movie theater, to which only ticketholders should be admitted), logical… …   Wikipedia

• Access Control Matrix — or Access Matrix is an abstract, formal computer protection and security model used in computer systems, that characterizes the rights of each subject with respect to every object in the system. It was first introduced by Butler W. Lampson in… …   Wikipedia

• Mandatory access control — In computer security, mandatory access control (MAC) refers to a type of access control by which the operating system constrains the ability of a subject or initiator to access or generally perform some sort of operation on an object or target.… …   Wikipedia

• Direct memory access — (DMA) is a feature of modern computers that allows certain hardware subsystems within the computer to access system memory independently of the central processing unit (CPU). Without DMA, the CPU using programmed input/output is typically fully… …   Wikipedia

• Memory protection — is a way to control memory access rights on a computer, and is a part of most modern operating systems. The main purpose of memory protection is to prevent a process from accessing memory that has not been allocated to it. This prevents a bug… …   Wikipedia

• Memory dependence prediction — is a technique, employed by high performance out of order execution microprocessors that execute memory access operations (loads and stores) out of program order, to predict true dependences between loads and stores at instruction execution time …   Wikipedia

• Memory management unit — This 68451 MMU could be used with the Motorola 68010 A memory management unit (MMU), sometimes called paged memory management unit (PMMU), is a computer hardware component responsible for handling accesses to memory requested by the CPU. Its… …   Wikipedia

• Memory Stick — This article is about Sony s proprietary memory format. For the mobile USB storage device, see USB flash drive. Memory Stick A 64 MB Sony Memory Stick Media type Flash Memory Card Capacity 4 MB to 256 GB (Maximum theoretical size:… …   Wikipedia

• Memory type range register — Memory type range registers (MTRRs) are a set of processor supplementary capabilities control registers that provide system software with control of how accesses to memory ranges by the CPU are cached. It uses a set of programmable model specific …   Wikipedia

• Memory Type Range Registers — (MTRRs) are control registers that provide system software with control of how accesses to memory ranges by the CPU are cached. It uses a set of programmable model specific registers (MSRs) which are special registers provided by most modern CPUs …   Wikipedia

• Memory management — is the act of managing computer memory. The essential requirement of memory management is to provide ways to dynamically allocate portions of memory to programs at their request, and freeing it for reuse when no longer needed. This is critical to …   Wikipedia