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This repository has been archived by the owner on Jul 14, 2023. It is now read-only.

Notes

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David edited this page Mar 28, 2023 · 1 revision

Welcome to the rise wiki!

Design decisions:

monitor overhead: For syscall:

  • register context switch
  • address context switch
  • register context switch
  • address context switch
  • CPU driver
  • address context switch
  • register context switch
  • address context switch
  • register context switch

4 full context switches.

traditional syscall overhead with capability memory isolation

  • register context switch
  • CPU driver
  • register context switch

2 register context switches

problems with user space driver:

  • Latency
  • Even more latency (if you want to delegate some instructions like cli, sti, out, in to the CPU driver) or vulnerability (exposing these privileged instructions to the user program(s)).
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