linux/linux-5.18.11/Documentation/ABI/testing/sysfs-class-iommu-amd-iommu

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What: /sys/class/iommu/<iommu>/amd-iommu/cap
Date: June 2014
KernelVersion: 3.17
Contact: Alex Williamson <alex.williamson@redhat.com>
Description:
IOMMU capability header as documented in the AMD IOMMU
specification. Format: %x
What: /sys/class/iommu/<iommu>/amd-iommu/features
Date: June 2014
KernelVersion: 3.17
Contact: Alex Williamson <alex.williamson@redhat.com>
Description:
Extended features of the IOMMU. Format: %llx