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Linux ???? Linux Operating System Dr. Fu-Hau Hsu

Linux ???? Linux Operating System Dr. Fu-Hau Hsu

Linux ???? Linux Operating System Dr. Fu-Hau Hsu. Chapter 10 System Calls. Issuing a System Call via the sysenter Instruction. The int assembly language instruction is inherently slow because it performs several consistency and security checks.

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834 views • 65 slides
Process Description and Control

Process Description and Control

Process Description and Control. Module 1.1. When to Switch a Process ?. A process switch may occur whenever the OS has gained control of CPU. ie when: Supervisor Call explicit request by the program (ex: file open). The process will probably be blocked Trap

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737 views • 62 slides
Introduction to Linux Kernel Internals for OpenVMS Experts

Introduction to Linux Kernel Internals for OpenVMS Experts

Introduction to Linux Kernel Internals for OpenVMS Experts. Keith Parris HP. History. Unix heritage Richard M. Stallman and GNU project Berkeley Standard Distribution (BSD) Andy Tannenbaum and Minix Linus Torvalds and Linux 1991 Unix-like kernel for Intel 386. Philosophy. Open Source

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835 views • 61 slides
The OS Environment

The OS Environment

The OS Environment. Fred Kuhns fredk@cse.wustl.edu Applied Research Laboratory, Department of Computer Science and Engineering, Washington University in St. Louis. Model and Core Abstractions. Basic model computer used to access, transform and store information.

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441 views • 31 slides
CS 153 Design of Operating Systems Winter 2016

CS 153 Design of Operating Systems Winter 2016

CS 153 Design of Operating Systems Winter 2016. Lecture 22: System calls and their implementation details. Homework 3 is out!. Due in a week (March 7 th ). System Call. emacs: read(). Trap to kernel mode int 0x80 / sysenter. User mode. Kernel mode.

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269 views • 26 slides
Papers

Papers

Papers. S. Forrest, A. Somayaji, and D. Ackley. "Building Diverse Computer Systems", HotOS (1997). paper PaX Team, "Documentation for the PaX project", link A. van de Ven, "New Security Enhancements in Red Hat Enterprise Linux v. 3, update 3", paper. Diversity.

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314 views • 22 slides
Papers

Papers

Papers. S. Forrest, A. Somayaji, and D. Ackley. "Building Diverse Computer Systems", HotOS (1997). paper PaX Team, "Documentation for the PaX project", link A. van de Ven, "New Security Enhancements in Red Hat Enterprise Linux v. 3, update 3", paper. Diversity.

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317 views • 22 slides
Papers

Papers

Papers. S. Forrest, A. Somayaji, and D. Ackley. "Building Diverse Computer Systems", HotOS (1997). paper PaX Team, "Documentation for the PaX project", link A. van de Ven, "New Security Enhancements in Red Hat Enterprise Linux v. 3, update 3", paper. Diversity.

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227 views • 22 slides
Processes and Threads

Processes and Threads

Processes and Threads. CS 161: Lecture 6 2/13/19. A Simple Pipelined CPU. Conditions?. Instr. size. Next sequential IP. Read reg0 idx. Read reg1 idx. Sign-extended imm. Write reg idx. Write reg data. Opcode. Memory. ?. ?. IP. Read data 0. +. Memory. ALU. +. Read data 1.

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179 views • 16 slides
Managing Processors

Managing Processors

Managing Processors. Jeff Chase Duke University. The story so far: protected CPU mode. Any kind of machine exception transfers control to a registered (trusted) kernel handler running in a protected CPU mode. user mode. syscall trap. fault. fault. u-start. u-return. u-start. u-return.

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123 views • 12 slides

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