RE: [PATCH v3 3/7] iommu/vt-d: Add blocking domain support

[Tian, Kevin]

> From: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx>
> Sent: Monday, November 14, 2022 9:41 AM
> 
> The Intel IOMMU hardwares support blocking DMA transactions by clearing
> the translation table entries. This implements a real blocking domain to
> avoid using an empty UNMANAGED domain. The detach_dev callback of the
> domain ops is not used in any path. Remove it to avoid dead code as well.
> 
> Signed-off-by: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx>

Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>