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.
