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Friday, October 30 • 06:30 - 07:00
Scalable Work Submission in Device Virtualization - Hao Wu, Intel

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Hardware I/O virtualization techniques, such as PCIe SR-IOV and Intel Scalable IOV, allows devices to be shared by multiple clients (e.g. VMs) with minimal emulation cost. However, some devices may not allow fine-grained partitioning of its backend resources, thus imposing a scalability limitation. ENQCMD (Enqueue Command) is a new instruction on future Intel platforms to allow scalable work submission for such devices. The instruction payload includes the work descriptor and a unique PASID to identify the client who is submitting the work, thus allowing a single work queue to be shared between multiple clients. In this talk, Hao will introduce the ENQCMD concept and how to efficiently virtualize it through hardware/software extensions, based on the example implementation on Scalable IOV based device.

Speakers
HW

Hao Wu

Senior Software Engineer, Intel
Hao is from Intel Virtualization Enabling Team and now working on ENQCMD virtualization support and also other Scalable IOV related development. Hao joined Intel at 2009, besides virtualization, he also has a lot of experience on Linux Kernel and device drivers development.



Friday October 30, 2020 06:30 - 07:00 GMT
KVM Theater
  KVM Track 1