[PATCH v2 2/9] iommu/vt-d: Update the definition of the blocking domain

[Tian, Kevin]

> From: Jason Gunthorpe <jgg at nvidia.com>
> Sent: Thursday, September 28, 2023 7:48 AM
> 
> The global static should pre-define the type and the NOP free function can
> be now left as NULL.
> 
> Reviewed-by: Lu Baolu <baolu.lu at linux.intel.com>
> Signed-off-by: Jason Gunthorpe <jgg at nvidia.com>

Reviewed-by: Kevin Tian <kevin.tian at intel.com>