projects / mirror_ubuntu-zesty-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| d72e31c9 AW |
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. |