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2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/Documentation/ABI/testing/sysfs-kernel-iommu_groups
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 		region is described on a single line: the 1st field is
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 		the base IOVA, the second is the end IOVA and the third
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 		field describes the type of the region.
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+
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+What:		/sys/kernel/iommu_groups/reserved_regions
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+Date: 		June 2019
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+KernelVersion:  v5.3
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+Contact: 	Eric Auger <eric.auger@redhat.com>
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+Description:    In case an RMRR is used only by graphics or USB devices
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+		it is now exposed as "direct-relaxable" instead of "direct".
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+		In device assignment use case, for instance, those RMRR
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+		are considered to be relaxable and safe.