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

Baolu Lu
2022-06-01T09:38:06Z

On 2022/6/1 09:43, Tian, Kevin wrote:
>> From: Jacob Pan<jacob.jun.pan@linux.intel.com>
>> 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