# Re: \[RFC V2\] virtio: Add platform specific DMA API translation for virito devices

- From: Michael S. Tsirkin \<mst@redhat.com\>
- Date: 2018-06-05 01:25:42 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2018/06/5300686
- Thread: https://ratatoskr.run/linuxppc-dev/2018/05/5289219/t.md

```text
On Tue, Jun 05, 2018 at 09:26:56AM +1000, Benjamin Herrenschmidt wrote:
> I would like to keep however the ability to bypass the iommu for
> performance reasons

So that's easy, clear the IOMMU flag and this means "bypass the IOMMU".

-- 
MST
```