On Fri, Jun 24, 2022 at 06:35:49PM +0800, Yong Wu wrote: > > > It's not used in VFIO context. "return 0" just satisfy the iommu > > > framework to go ahead. and yes, here we only allow the shared > > > "mapping-domain" (All the devices share a domain created > > > internally). What part of the iommu framework is trying to attach a domain and wants to see success when the domain was not actually attached ? > > What prevent this driver from being used in VFIO context? > > Nothing prevent this. Just I didn't test. This is why it is wrong to return success here. Jason
