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Re: [Xen-devel] Question about swiotlb-xen driver

To: Ian Campbell <Ian.Campbell@xxxxxxxxxx>
From: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Date: Tue, 3 Dec 2013 14:27:59 +0000
Cc: stefano.stabellini@xxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxx, Andrii Tseglytskyi <andrii.tseglytskyi@xxxxxxxxxxxxxxx>
Delivery-date: Tue, 03 Dec 2013 14:28:39 +0000
List-id: Xen developer discussion <xen-devel.lists.xen.org>

On Tue, 3 Dec 2013, Ian Campbell wrote:
> On Tue, 2013-12-03 at 16:11 +0200, Andrii Tseglytskyi wrote:
> > Hi Stefano,
> > 
> > 
> > Could you please answer, is swiotlb-xen driver designed to work on
> > DomU kernel? 
> 
> No. DomU device assignment will require an IOMMU I'm afraid.

The swiotlb-xen driver is designed to make DMA transactions safe in Dom0
as we don't have IOMMU support in Xen yet.

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Follow-Ups:
- Re: [Xen-devel] Question about swiotlb-xen driver
  - From: Stefano Stabellini

References:
- [Xen-devel] Question about swiotlb-xen driver
  - From: Andrii Tseglytskyi
- Re: [Xen-devel] Question about swiotlb-xen driver
  - From: Ian Campbell

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