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    SubjectRe: [PATCH V4 05/18] iommu/ioasid: Redefine IOASID set and allocation APIs
    On Fri, Mar 19, 2021 at 10:58:41AM +0100, Jean-Philippe Brucker wrote:

    > Although there is no use for it at the moment (only two upstream users and
    > it looks like amdkfd always uses current too), I quite like the
    > client-server model where the privileged process does bind() and programs
    > the hardware queue on behalf of the client process.

    This creates a lot complexity, how do does process A get a secure
    reference to B? How does it access the memory in B to setup the HW?

    Why do we need separation anyhow? SVM devices are supposed to be
    secure or they shouldn't do SVM.

    Jason

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