What: /sys/class/iommu//intel-iommu/address Date: June 2014 KernelVersion: 3.17 Contact: Alex Williamson Description: Physical address of the VT-d DRHD for this IOMMU. Format: %llx. This allows association of a sysfs intel-iommu with a DMAR DRHD table entry. What: /sys/class/iommu//intel-iommu/cap Date: June 2014 KernelVersion: 3.17 Contact: Alex Williamson Description: The cached hardware capability register value of this DRHD unit. Format: %llx. What: /sys/class/iommu//intel-iommu/ecap Date: June 2014 KernelVersion: 3.17 Contact: Alex Williamson Description: The cached hardware extended capability register value of this DRHD unit. Format: %llx. What: /sys/class/iommu//intel-iommu/version Date: June 2014 KernelVersion: 3.17 Contact: Alex Williamson Description: The architecture version as reported from the VT-d VER_REG. Format: %d:%d, major:minor