Hi iommu developers,

I have a question regarding the recent VIOT submission for supporting paravirtualized IOMMU in guests. The spec defines PCI Range Node Structure (5.2.30.3) that maps to a single PCI segment.

Is it possible for the new table to express that an IOMMU covers all PCI segments?  This could help support scenarios where:


  1.  Devices are dynamically assigned to guests during runtime
  2.  Devices in the same guests are assigned to different segments.

Thanks,
Yinghan