Re: [PATCH v2 00/10] iommu/vt-d: Bounce buffer for untrusted devices

[Christoph Hellwig]

On Wed, Mar 27, 2019 at 02:34:56PM +0800, Lu Baolu wrote:
>   - During the v1 review cycle, we discussed the possibility
>     of reusing swiotlb code to avoid code dumplication, but
>     we found the swiotlb implementations are not ready for the
>     use of bounce page pool.
>     https://lkml.org/lkml/2019/3/19/259

So make it ready.  You too can contribute to common code.  Robin
also explicitly asked to make the bounce policy iommu-subsystem wide.