On Thu, Jul 17, 2025 at 9:34 PM Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote: > > On Thu, Jul 17, 2025 at 04:02:37PM +0800, Jason Wang wrote: > > Lacking the support of device specific mapping supported in virtio, > > VDUSE must trick the DMA API in order to make virtio-vdpa transport > > work. This is done by advertising vDPA device as dma device with a > > VDUSE specific dma_ops even if it doesn't do DMA at all. > > > > This will be fixed by this patch. Thanks to the new mapping operations > > support by virtio and vDPA. VDUSE can simply switch to advertise its > > specific mappings operations to virtio via virtio-vdpa then DMA API is > > not needed for VDUSE any more. > > This can now drop the depends on HAS_DMA and ARCH_HAS_DMA_OPS for > VDPA_USER. > > Right. Let me drop them in V3. Thanks
