AMD IOMMU status

AMD IOMMU status

[Andrew Oakley]

There seem to be a lot of commits and discussion about VT-d support,
however there seems to be very little activity regarding device
passthrough using the AMD IOMMU.  Is it "done", lacking a mantainer,
or never going to work?  

A quick google showed that 8 series chipsets for desktop are likely to
be released very soon (looks like it is only the 8 series that have the
relevant IOMMU).  I'm not sure if any other hardware is required for
passthrough, does anyone know if there is anything special about the
CPU?

Re: AMD IOMMU status

[Keir Fraser]

AMD are actively working on it. Most recent committed patch specifically for
AMD IOMMU support was mid December.

 -- Keir

On 08/01/2010 00:10, "Andrew Oakley" <andrew@ado.is-a-geek.net> wrote:

> There seem to be a lot of commits and discussion about VT-d support,
> however there seems to be very little activity regarding device
> passthrough using the AMD IOMMU.  Is it "done", lacking a mantainer,
> or never going to work?
> 
> A quick google showed that 8 series chipsets for desktop are likely to
> be released very soon (looks like it is only the 8 series that have the
> relevant IOMMU).  I'm not sure if any other hardware is required for
> passthrough, does anyone know if there is anything special about the
> CPU?
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel

Re: AMD IOMMU status

[Wei Huang]

Xen's support for AMD IOMMU is up-to-date. You need 800 chipset and a 
working BIOS to use IOMMU. There will be an option in BIOS to turn it 
on/off. IOMMU feature doesn't require special support from CPUs.

Best,
-Wei

Keir Fraser wrote:
> AMD are actively working on it. Most recent committed patch specifically for
> AMD IOMMU support was mid December.
>
>  -- Keir
>
> On 08/01/2010 00:10, "Andrew Oakley" <andrew@ado.is-a-geek.net> wrote:
>
>   
>> There seem to be a lot of commits and discussion about VT-d support,
>> however there seems to be very little activity regarding device
>> passthrough using the AMD IOMMU.  Is it "done", lacking a mantainer,
>> or never going to work?
>>
>> A quick google showed that 8 series chipsets for desktop are likely to
>> be released very soon (looks like it is only the 8 series that have the
>> relevant IOMMU).  I'm not sure if any other hardware is required for
>> passthrough, does anyone know if there is anything special about the
>> CPU?
>>
>> _______________________________________________
>> Xen-devel mailing list
>> Xen-devel@lists.xensource.com
>> http://lists.xensource.com/xen-devel
>>     
>
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel
>
>