KVM-devirt - Extending KVM to a Zero-Overhead Partition Hypervisor

Explore a groundbreaking presentation on extending KVM to create a zero-overhead partition hypervisor. Delve into the challenges of many-core scalability bottlenecks in Linux kernels and discover how KVM virtualization can be leveraged to partition server resources effectively. Learn about KVM-devirt, an innovative extension that eliminates virtualization overhead through privilege instruction and interrupt passthrough techniques. Understand the technical approach behind removing stage-2 address translations and DMA remap translations on IOMMU, enabling bare-metal machine performance within a virtualized environment. Gain insights into the implementation process, examine experimental results, and explore open questions and future plans for this cutting-edge technology.

KVM-devirt: Extending KVM to a Zero-Overhead Partition Hypervisor - Liang Deng, Bytedance