iommu: Fix htmldocs warnings in sysfs-kernel-iommu_groups (62c9917d) · Commits · 戴 / test

Documentation/ABI/testing/sysfs-kernel-iommu_groups

+17 −16

Original line number	Diff line number	Diff line
		@@ -40,23 +40,24 @@ KernelVersion: v5.11
		Contact: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>
		Description: /sys/kernel/iommu_groups/<grp_id>/type shows the type of default
		domain in use by iommu for this group. See include/linux/iommu.h
		for possible values. A privileged user could request kernel to
		change the group type by writing to this file. Presently, only
		three types of request are supported:
		1. DMA: All the DMA transactions from the device in this group
		for possible read values. A privileged user could request kernel to
		change the group type by writing to this file. Valid write values:

		======== ======================================================
		DMA All the DMA transactions from the device in this group
		are translated by the iommu.
		2. identity: All the DMA transactions from the device in this
		group are not translated by the iommu.
		3. auto: Change to the type the device was booted with.
		Note:
		-----
		identity All the DMA transactions from the device in this group
		are not translated by the iommu.
		auto Change to the type the device was booted with.
		======== ======================================================

		The default domain type of a group may be modified only when
		1. The group has only one device
		2. The device in the group is not bound to any device driver.

		- The group has only one device.
		- The device in the group is not bound to any device driver.
		So, the users must unbind the appropriate driver before
		changing the default domain type.
		Caution:
		--------

		Unbinding a device driver will take away the driver's control
		over the device and if done on devices that host root file
		system could lead to catastrophic effects (the users might

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