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Linux Foundation

Hot-Resizing of Windows VMs via Hyper-V Dynamic Memory Protocol

Linux Foundation via YouTube

Overview

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Explore the implementation of hot memory resizing for Windows VMs using the Hyper-V Dynamic Memory protocol in this 30-minute conference talk. Discover the advantages of this approach over ACPI-based PC DIMM hotplug, including the ability to manage guest memory at a much smaller granularity. Learn about the proposed new QEMU VMBus driver, "hv-balloon," which supports both memory hot-add/hot-removal and ballooning. Gain insights into the memslots scalability improvements developed as part of this effort, available upstream since kernel 5.17. Understand how this implementation can benefit Windows Server 2012 R2, 2016, and later versions with built-in support for the protocol.

Syllabus

Hot-resizing of Windows VMs via Hyper-V Dynamic Memory Protocol - Maciej S. Szmigiero, Oracle

Taught by

Linux Foundation

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