On 2024/4/16 17:13, Tian, Kevin wrote:
From: Liu, Yi L <yi.l.liu@xxxxxxxxx>
Sent: Friday, April 12, 2024 4:21 PM
+/*
+ * VFIO_DEVICE_PASID_ATTACH_IOMMUFD_PT - _IOW(VFIO_TYPE,
VFIO_BASE + 21,
+ * struct
vfio_device_pasid_attach_iommufd_pt)
+ * @argsz: User filled size of this data.
+ * @flags: Must be 0.
+ * @pasid: The pasid to be attached.
+ * @pt_id: Input the target id which can represent an ioas or a hwpt
+ * allocated via iommufd subsystem.
+ * Output the input ioas id or the attached hwpt id which could
+ * be the specified hwpt itself or a hwpt automatically created
+ * for the specified ioas by kernel during the attachment.
+ *
+ * Associate a pasid (of a cdev device) with an address space within the
remove '(of a cdev device)' as end of the paragraph has "This is only
allowed on cdev fds". Also a pasid certainly belongs to device hence
just using pasid alone is clear.
ok
+ * bound iommufd. Undo by VFIO_DEVICE_PASID_DETACH_IOMMUFD_PT
or device fd
+ * close. This is only allowed on cdev fds.
+ *
+ * If a pasid is currently attached to a valid hw_pagetable (hwpt),
remove 'hw_pagetable'. the abbreviation "hwpt" has been used
throughout this file (e.g. even when explaining @pt_id in earlier place).
ok
--
Regards,
Yi Liu
