On Thu, Jul 17, 2025 at 9:34 PM Christoph Hellwig <h...@infradead.org> 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


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