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Linux Foundation

Challenges in Supporting Virtual CPU Hotplug on SoC-Based Systems - ARM64 Case Study

Linux Foundation via YouTube

Overview

Explore the complexities of implementing virtual CPU hotplug functionality on System-on-Chip (SoC) based systems, with a focus on ARM64 architecture, in this 25-minute conference talk presented by Salil Mehta from Huawei at a Linux Foundation event. Gain insights into the necessity of virtual CPU hotplug, delve into the challenges faced during implementation, and understand the limitations imposed by various components. Learn about known issues, including unwiring of interrupt setups, and discover workarounds developed for KVM. Examine recent attempts to address these challenges, analyze problems encountered in upstream development, and get a glimpse of future work in this critical area of virtualization technology.

Syllabus

Introduction
Why do we need a Virtual CPU Hotplug
Challenges
Known Challenges
Limitation imposed by vgeck
Unwiring of interrupt setups
Workarounds
KVM
Recent attempts
Problems in upstream
Summary
Future Work
Thank You

Taught by

Linux Foundation

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