Os memory management
[PDF File]Memory Management - University of California, Davis
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Memory Management Requirements • Protection Processes should not be able to reference memory locations in another process without permission Impossible to check absolute addresses at compile time Must be checked at run time Memory protection requirement must be satisfied by the processor (hardware) rather than the operating system (software)
[PDF File]Lecture 7: Memory Management
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basic abstracon provided by the OS memory management is virtual memory – A process’s address space in memory is not necessarily the same as the physical memory (RAM) address in which it resides – When a process requests a memory address, the OS will
[PDF File]Lecture 10: Memory Management
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4 CSE 120 – Lecture 10 Virtual Memory OS provides Virtual Memory (VM) as the abstraction for managing memory Indirection allows moving programs around in memory Allows processes to address more or less memory than physically installed in the machine »Virtual memory enables a program to execute with less than its
[PDF File]Chapter 9: Memory Management
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Operating System Concepts 9.5 Silberschatz, Galvin and Gagne 2002 Logical vs. Physical Address Space The concept of a logical address space that is bound to a separate physical address space is central to proper memory management. Logical address – generated by the CPU; also referred to as virtual address. Physical address – address seen by the memory unit.
[PDF File]OPERATING SYSTEMS MEMORY MANAGEMENT - WPI
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8: Memory Management 4 MEMORY MANAGEMENT • The concept of a logical address space that is bound to a separate physical address space is central to proper memory management. • Logical address – generated by the CPU; also referred to as virtual address • Physical address – address seen by the memory unit • Logical and physical addresses are the same in compile-time and load-
[PDF File]Operating Systems – Memory Management
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ECE 344 Operating Systems 9 Contiguous Memory Allocation • Multiple partitions for multiple processes • Relocation register and limit registers to protect processes from one another (and protect OS code) • Both registers are part of process context (i.e., PCB) • Relocation register …
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