Based on kernel version 4.13.3. Page generated on 2017-09-23 13:54 EST.
1 What: /sys/kernel/iommu_groups/ 2 Date: May 2012 3 KernelVersion: v3.5 4 Contact: Alex Williamson <firstname.lastname@example.org> 5 Description: /sys/kernel/iommu_groups/ contains a number of sub- 6 directories, each representing an IOMMU group. The 7 name of the sub-directory matches the iommu_group_id() 8 for the group, which is an integer value. Within each 9 subdirectory is another directory named "devices" with 10 links to the sysfs devices contained in this group. 11 The group directory also optionally contains a "name" 12 file if the IOMMU driver has chosen to register a more 13 common name for the group. 14 Users: 15 16 What: /sys/kernel/iommu_groups/reserved_regions 17 Date: January 2017 18 KernelVersion: v4.11 19 Contact: Eric Auger <email@example.com> 20 Description: /sys/kernel/iommu_groups/reserved_regions list IOVA 21 regions that are reserved. Not necessarily all 22 reserved regions are listed. This is typically used to 23 output direct-mapped, MSI, non mappable regions. Each 24 region is described on a single line: the 1st field is 25 the base IOVA, the second is the end IOVA and the third 26 field describes the type of the region.