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    SubjectRe: [PATCH v12 4/8] iommu/vt-d: Add bind guest PASID support
    On Wed, 29 Apr 2020 16:12:01 +0200
    Auger Eric <eric.auger@redhat.com> wrote:

    > >> in last review Eric raised the open about what about binding the
    > >> same PASID to the same pdev multiple times. We discussed that
    > >> should be disallowed. Here can you check whether aux_domain is
    > >> enabled on pdev to restrict multiple-binding only for
    > >> sub-devices?
    > > Why aux_domain is sufficient? A pdev could have aux_domain enabled
    > > but still bind pdev many times more than its mdevs.
    > >
    > > Either we allow multiple bind or not.
    >
    > I tried to figure out whether binding the same PASID to the same pdev
    > was meaningful. I understood it is not. If this case can be detected
    > at VFIO level I am fine as well.
    I will remove the multiple bind support for now. Reintroduce it when we
    enable mdev.

    Thanks,

    Jacob

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