[CSE]  Advanced Operating Systems 
 COMP9242 2002/S2 
UNSW

PRINTER Printer-Friendly Version
Administration               
- Notices
- Course Intro
- Consultations
# On-line Survey (closed)
- Survey Results
 
Work
- Lectures
- Milestone 0
- Project Admin
- Project Spec
- Project FAQ
- Exam
 
Documentation
- ASysT Lab
- L4 source browser
- Sulima ISA Simulator
R4x00 ISA Summary 
MIPS R4700 ReferenceMIPS R4000 User Manual 
- Network Driver
- GT64111
 
Related Info
- Aurema OS Prize
- OS Hall of Fame
 
History
- 2000
- 1999
- 1998
 
Staff
- Gernot Heiser (LiC)

 
Valid HTML 4.0!
next up previous
Next: Fully virtual caches with Up: 03-cache Previous: Virtual Cache Issues

Fully Virtual Caches


  • Fastest (don't rely on TLB for retrieving data)
    • however, needs TLB for protection
    • or other mechanism to provide protection
  • Suffer from synonyms and homonyms
    • requires flushing on context switch
      • makes context switches expensive
      • may even be required on kernel\(\rightarrow\)user switch
    • ... or guarantee of no synonyms and homonyms
  • Require TLB lookup for write-back!
  • Used on MC68040, i860



Gernot Heiser 2002-08-15