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    SubjectRE: [PATCH 4/5] misc: vop: set VIRTIO_F_ACCESS_PLATFORM for nocoherent platform
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    Hi Christoph,

    > On Fri, Sep 25, 2020 at 03:26:29PM +0800, Sherry Sun wrote:
    > > Set VIRTIO_F_ACCESS_PLATFORM feature for nocoherent platform, since it
    > > needs the DMA API for virtio.
    >
    > Given that VOP is a plug-in PCIe card VIRTIO_F_ACCESS_PLATFORM must
    > always be set, as the DMA mapping details are not something the virtio
    > implementation decides on, but the host PCIe/iommu implementation.

    So do you mean that we should remove the check, and set VIRTIO_F_ACCESS_PLATFORM feature directly?

    Regards
    Sherry

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