Re: [PATCH v4 1/6] iommu: Add a per domain PASID for DMA API

[Baolu Lu]

On 2022/6/1 09:43, Tian, Kevin wrote:
> > From: Jacob Pan<jacob.jun.pan@xxxxxxxxxxxxxxx>
> > Sent: Wednesday, June 1, 2022 1:30 AM
> > > > In both cases the pasid is stored in the attach data instead of the
> > > > domain.
> > So during IOTLB flush for the domain, do we loop through the attach data?
> Yes and it's required.

What does the attach data mean here? Do you mean group->pasid_array?

Why not tracking the {device, pasid} info in the iommu driver when
setting domain to {device, pasid}? We have tracked device in a list when
setting a domain to device.

Best regards,
baolu