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1 | What: /sys/kernel/iommu_groups/ |
2 | Date: May 2012 | |
3 | KernelVersion: v3.5 | |
4 | Contact: Alex Williamson <alex.williamson@redhat.com> | |
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: | |
cf610ca1 EA |
15 | |
16 | What: /sys/kernel/iommu_groups/reserved_regions | |
17 | Date: January 2017 | |
18 | KernelVersion: v4.11 | |
19 | Contact: Eric Auger <eric.auger@redhat.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. |