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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 <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:
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.
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