Re: [PATCH vhost v8 01/12] virtio_ring: split: separate dma codes

[Christoph Hellwig]

As said before, please don't try to do weird runtime checks based
on the scatterlist.  What you have works for now, but there are
plans to repalce the page + offset tuple in the scatterlist with
just a phys_addr_t.  And with that your "clever" scheme will break
instantly.
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