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Thursday, October 29 • 15:00 - 15:30
Virtual Versus Physical: Virtio Changes for New Hardware - Michael S. Tsirkin, Red Hat

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Virtio has been originally designed as a VM guest to hypervisor interface. As it became ubiquitious virtio hardware offload schemes began to pop up. These are typically designed to perform well with existing Virtio drivers without modifying guests. We are however finding out that to maximise performance, interface changes can be benefitial. Interestingly, as CPU technology changes, some of these become benefitial for guest to hypervisor communication, too. This talk will discuss changes in the Virtio specification for the benefit of new CPU and offload hardware: some of them already accepted for the next specification version, some still under discussion. Open questions will be presented in the hope to generate discussion.

Speakers
MS

Michael S. Tsirkin

Distinguished Engineer, Red Hat Inc
Michael has been with Red Hat for more than 10 years. In his role as a Distinguished Engineer he acts as a chair of the Virtio Technical Committee, overseeing the development of the virtio specification for virtual devices. He also maintains several subsystems in QEMU and Linux and... Read More →



Thursday October 29, 2020 15:00 - 15:30 GMT
KVM Theater
  KVM Track 1