Re: [PATCH] Add I/O hypercalls for i386 paravirt

James Courtier-Dutton
2007-08-22T22:39:50Z

Chris Wright wrote:
> * James Courtier-Dutton (James@superbug.co.uk) wrote:
>> If one could directly expose a device to the guest, this feature could
>> be extremely useful for me.
>> Is it possible? How would it manage to handle the DMA bus mastering?
>
> Yes it's possible (Xen supports pci pass through). Without an IOMMU
> (like Intel VT-d or AMD IOMMU) it's not DMA safe.
>
> thanks,
> -chris

Ok, so I need to get a new CPU like the Intel Core Duo that has VT
features? I have an old Pentium 4 at the moment, without any VT features.

Kind Regards

James