PPT-Virtual Memory Hardware

Outline Introduction to virtual memory Paging MMU Page tables 2 Problems with Simple Memory Mgmt A simple memory management scheme allocates contiguous physical memory to programs Problems. Memory. Supporting Large Transactions. Anvesh. . Komuravelli. Abe Othman. Kanat. . Tangwongsan. Hardware-based. . Concurrent Programs. obj.x. = 7;. find_primes. ();. // intrusion test. if (. obj.x. Hakim Weatherspoon. CS 3410, Spring 2011. Computer Science. Cornell University. P & H . Chapter. 5.4-5. Announcements. PA3 . available. Due . Tuesday, April 19. th. Work with . pairs. Be responsible with new knowledge. Jonathan Walpole. Disco : Running . Commodity Operating Systems . on . Scalable . M. ultiprocessors. Outline. Goal. Problems . and solutions. Virtual Machine Monitors(VMM). Disco architecture. Disco implementation. Use main memory as a “cache” for secondary (disk) storage. Managed jointly by CPU hardware and the operating system (OS). Programs share main memory. Each gets a private virtual address space holding its frequently used code and data. Running Commodity Operating Systems on Scalable Multiprocessors. Edouard. . Bugnion. , Scott Devine and Mendel . Rosenblum. Presentation by Mark Smith. Introduction. Virtual . Machine Monitor. Virtual Machine Design. BYU CS 345. Virtual Memory. 2. Topics to Cover…. Program Execution Patterns. Computer Memory. Virtual Memory. Paging. Segmentation. Performance. Replacement Algorithms. Paging Improvements. Objectives. Managed jointly by CPU hardware and the operating system (OS). Programs share main memory. Each gets a private virtual address space holding its frequently used code and data. Protected from other programs. CS 3410, Spring 2012. Computer Science. Cornell University. P & H Chapter 5.4 . Goals for Today. Virtual Memory. Address Translation. Pages, page tables, and memory . mgmt. unit. Paging. Role of Operating System. CSE351 Winter 2013. Roadmap. 2. car *c = malloc(sizeof(car));. c->miles = 100;. c->gals = 17;. float mpg = get_mpg(c);. free(c);. Car c = new Car();. c.setMiles(100);. c.setGals(17);. float mpg =. Prof. Eric Rotenberg. 1. Fall 2018. ECE 463/563, Microprocessor Architecture, Prof. Eric Rotenberg. Virtual Memory. Every program has its own virtual memory. Large virtual address space. Divided into . Reducing Dimensionality of Nested Page Walks . Jayneel . Gandhi. , . Arkaprava. . Basu. ,. Mark D. . Hill, Michael . M. . Swift. MICRO-47 . Executive Summary. Problem: TLB misses in virtual machines. Mikhail . Gorobets, Oleksandr . Bazhaniuk, Alex . Matrosov,. Andrew Furtak, Yuriy Bulygin. Advanced . Threat . Research. Agenda. Hypervisor based isolation. Firmware rootkit . vs . hypervisor. Attacking hypervisor emulation of hardware devices. Mikhail . Gorobets, Oleksandr . Bazhaniuk, Alex . Matrosov,. Andrew Furtak, Yuriy Bulygin. Advanced . Threat . Research. Agenda. Hypervisor based isolation. Firmware rootkit . vs . hypervisor. Attacking hypervisor emulation of hardware devices. 17. th. Lecture, . November 1. , 2022. Instructors:. . Dave Andersen (15-213). Zack Weinberg (15-213). Brian Railing (15-513). David Varodayan (14-513). Review: Virtual Addressing. Each process has its own .