Re: [Xen-devel] Discussion about virtual iommu support for Xen guest

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

> From: Lan, Tianyu
> Sent: Friday, May 27, 2016 10:27 AM
> 
> On 2016年05月26日 16:42, Dong, Eddie wrote:
> > If enabling virtual Q35 solves the problem, it has the advantage: When more 
> > and more
> virtual IOMMU feature comes (likely), we can reuse the KVM code for Xen.
> > How big is the effort for virtual Q35?
> 
> I think the most effort are to rebuild all ACPI tables for Q35 and add
> Q35 support in the hvmloader. My concern is about new ACPI tables'
> compatibility issue. Especially with Windows guest.
> 

Another question is how tightly this vIOMMU implementation is bound to Q35?
Can it work with old chipset too and if yes how big is the effort compared to
others?

Thanks
Kevin
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