Description of problem: Failed to hot-plug DSA PF/MDEV device to guest with scalable vIOMMU. Version-Release number of selected component (if applicable): How reproducible: Steps to Reproduce: 1. Create linux VM with scalable vIOMMU enabled. 2. Hot-plug DSA PF/MDEV device through QEMU monitor. 3. Run dmatest in guest Actual results: In QEMU monitor, errors reported: device attachment is denied by vIOMMU, please check host IOMMU nesting capability. Expected results: Additional info:
merged: https://gitee.com/anolis/cloud-kernel/pulls/649