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

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On Fri, May 12, 2023 at 11:27 PM Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote:
> 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.

Xuan, I think we probably need to go back to your original method that
is having a dedicated flag and helper for pre mapped buffers.


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