Re: [Xen-devel] GPU Passthrough without VT-d

[Dushyant Behl <myselfdushyantbehl@xxxxxxxxx>]

Thanks for the quick reply. I'll try to look into it.

-

Dushyant

On Fri, Mar 7, 2014 at 12:51 PM, Kai Huang <kai.k.huang@xxxxxxxxxxxxxxx> wrote:

In general you cannot do pci passthrough for HVM without IOMMU (vt-d) support, as we need VT-d to support guest physical address to machine address translation for DMA.

However, theoretically, you can do it by hacking Xen to setup identical (1:1) mappings for guest's memory, but it's not a pretty way and you should expect to suffer lots of tricky corner case bugs.

Thanks,
-Kai

On 03/07/2014 11:03 AM, Dushyant Behl wrote:

Hi all,

I am new to the xen community and I wanted to work on the project
"Allowing guests to boot with a passed-through GPU as the primary
display" but the processor in my system does not supports IO MMU
Virtualization (Intel VT-d), it only supports the Intel Virtualization
(Intel VT-x). Would it be possible for me to work on the project in anyway?

Thanks,
Dushyant

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