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
