Date:   Thu, 9 Dec 2021 19:41:35 -0400
From:   Jason Gunthorpe <jgg@nvidia.com>
To:     Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc:     Lu Baolu <baolu.lu@linux.intel.com>,
        iommu@lists.linux-foundation.org,
        LKML <linux-kernel@vger.kernel.org>,
        Joerg Roedel <joro@8bytes.org>,
        Christoph Hellwig <hch@infradead.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Jean-Philippe Brucker <jean-philippe@linaro.com>,
        Jacob Pan <jacob.jun.pan@intel.com>,
        Raj Ashok <ashok.raj@intel.com>,
        "Kumar, Sanjay K" <sanjay.k.kumar@intel.com>,
        Dave Jiang <dave.jiang@intel.com>,
        Tony Luck <tony.luck@intel.com>, Yi Liu <yi.l.liu@intel.com>,
        "Tian, Kevin" <kevin.tian@intel.com>,
        Barry Song <21cnbao@gmail.com>,
        "Zanussi, Tom" <tom.zanussi@intel.com>,
        Dan Williams <dan.j.williams@intel.com>
Subject: Re: [PATCH 3/4] iommu/vt-d: Support PASID DMA for in-kernel usage
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On Thu, Dec 09, 2021 at 03:21:13PM -0800, Jacob Pan wrote:

> For DMA PASID storage, can we store it in the iommu_domain instead of
> iommu_group?

It doesn't make sense to put in the domain, the domain should be only
the page table and not have any relation to how things are matched to
it

Jason