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Friday, October 30 • 07:00 - 07:30
PASID Management in KVM - Yi Liu& Jacob Pan, Intel

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PASID (Process Address Space ID) is a PCIe capability that enables sharing of a single device across multiple isolated address domains. It has been becoming a hot topic in I/O technology evolution. e.g. as the foundation of SVA (Shared Virtual Addressing) and SIOV (Scalable I/O Virtualization). Although PASID itself is a generic concept, different usages/requirements are imposed cross vendors thus bringing an interesting challenge to PASID management in Linux. This talk will first review the PASID usages, introduce the IOASID (I/O Address Space ID) core logic in Linux, and then elaborate the gaps/solutions for efficient PASID management in KVM/VFIO.

Speakers
avatar for Jacob Pan

Jacob Pan

Linux Kernel Developer, Intel Corporation
Jacob is a veteran Linux kernel developer at Intel. His most recent interest and work are on Shared Virtual Address/Memory as well as the IOMMU subsystem in general.Prior to that, Jacob contributed to power management, device drivers, interrupt, timers, and X86 core.
avatar for Yi Liu

Yi Liu

Software Engineer, Intel Corporation
Yi is a software engineer from Intel Virtualization team, focusing on I/O virtualization technology. He works on Shared Virtual Memory, Scalable IOV and vIOMMU stuffs in recent years. He has been invited to give presentation at LPC 2017, LinuxCon Beijing 2018 and KVM Forum 2018, Intel... Read More →



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