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

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Fri, Mar 07, 2014 at 09:22:32PM +0200, Pasi Kärkkäinen wrote:
> On Fri, Mar 07, 2014 at 11:06:34PM +0530, Dushyant Behl wrote:
> >    Thanks for the quick reply. I'll try to look into it.
> >
> 
> There's an old patch to do that in the Xen wiki.. 
> 

See here:
http://old-list-archives.xenproject.org/archives/html/xen-devel/2009-09/msg00018.html

-- Pasi

> 
> >    -
> >    Dushyant
> > 
> >    On Fri, Mar 7, 2014 at 12:51 PM, Kai Huang
> >    <[1]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
> > 
> >        _______________________________________________
> >        Xen-devel mailing list
> >        [2]Xen-devel@xxxxxxxxxxxxx
> >        [3]http://lists.xen.org/xen-devel
> > 
> > References
> > 
> >    Visible links
> >    1. mailto:kai.k.huang@xxxxxxxxxxxxxxx
> >    2. mailto:Xen-devel@xxxxxxxxxxxxx
> >    3. http://lists.xen.org/xen-devel
> 
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@xxxxxxxxxxxxx
> > http://lists.xen.org/xen-devel
> 
> 
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