The introduction of system technologies that improve devices capabilities and performance (eg PCI ATS (Address Translation Service)/PRI, enabling Shared Virtual Memory (SVM) between devices and CPUs) is making PCI devices, the system IOMMUs they are connected to and the VFIO layer used to managed them (for userspace and device passthrough) more and more tightly coupled, with related kernel interfaces that have to be designed in-sync for all three subsystems.

The kernel patches aimed at enabling the related technologies affect VFIO/IOMMU/PCI subsystems and interfaces, which require a certain amount of coordination between kernel subsystems to make sure that the related interfaces are designed to work in a seamless manner.

The Linux Plumbers 2017 VFIO/IOMMU/PCI track will therefore focus on promoting discussions on the current kernel patches aimed at VFIO/IOMMU/PCI subsystems with specific sessions targeting discussion for kernel patches that enable technology (ie Shared Virtual Memory – SVM) requiring the three subsystems coordination; the microconference will also cover VFIO/IOMMU/PCI subsystem specific tracks to debate patches status for the respective subsystems plumbing.

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