The Road to Optimal CPU Virtualization on Hybrid Platforms

Explore the challenges and solutions for optimizing CPU virtualization on hybrid platforms in this 26-minute KVM Forum presentation. Delve into the complexities of leveraging hybrid CPU architectures in virtual machines, focusing on Intel client platforms from Alderlake onwards. Learn about proposed QEMU API designs for creating hybrid CPU/cache topologies in guest systems, including flexible CPU type configurations. Discover how to implement QOM-topology to improve QEMU's general topology subsystem. Gain insights into VM performance optimization methods for hybrid vCPUs, including ITD/ITMT techniques on Intel client platforms. Understand the comprehensive approach to achieving optimal CPU virtualization on hybrid platforms, addressing both performance and feature support challenges.