On Wed, Sep 30, 2020 at 6:09 PM Christoph Hellwig [off-list ref] wrote:

quoted

Add a new API that returns a virtually non-contigous array of pages
and dma address.  This API is only implemented for dma-iommu and will
not be implemented for non-iommu DMA API instances that have to allocate
contiguous memory.  It is up to the caller to check if the API is
available.

Isn't there already a flag that is only implemented for ARM
systems with iommu that forces pages to actually be physically
contiguous?

So isn't this some kind of strange opposite?

	David

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