Special Scenario 1: SVA Is Not Supported But IOMMU Is Enabled. All Devices Registered with the UACCE Support PASID and IOMMU

In this scenario, the memory transferred by the user is reserved by using wd_reserve_memory, and the hardware can use the VA. After the memory is reserved through the memory reservation function interface, you can use the VA to transfer the pointer to the hardware. No interface is added.