Xen devel - Aug 2009 - Intel VT-d/Neocleus 1:1 mreged code for PCI passthrough

All,

I have compiled a list of the Neocleus patches that were released in Sept 07 and
apply to changeset:  15730 (a long time ago!)

It looks like Neocleus have continued development and may have a more recent set
of patches, see http://www.neocleus.com/

As a person with interest in this subject, I have registered for their
"Insider Programme" but have not received an communication. I am very
interested in what they have been working on as it all seems to be behind closed
doors ! http://www.neocleus.com/insider.php

Anyway here are the old set of 1:1 patches:

[VTD-NEO][patch 0/6] Intel VT-d/Neocleus 1:1 mreged code for PCI passthrough
http://markmail.org/message/xbk2o4mzz4coufzp

[VTD-NEO][patch 1/6] Intel VT-d/Neocleus 1:1 mreged code for PCI passthrough
http://markmail.org/message/emyygrqw3crbdhjy

[VTD-NEO][patch 2/6] Intel VT-d/Neocleus 1:1 mreged code for PCI passthrough
http://markmail.org/message/kpbxkyvpeiddxnga

[VTD-NEO][patch 3/6] Intel VT-d/Neocleus 1:1 mreged code for PCI passthrough
http://markmail.org/message/wqd3gvgiwwrf7ct5

[VTD-NEO][patch 4/6] Intel VT-d/Neocleus 1:1 mreged code for PCI passthrough
http://markmail.org/message/cdqfuc6pgyz7vqpc

[VTD-NEO][patch 5/6] Intel VT-d/Neocleus 1:1 mreged code for PCI passthrough
http://markmail.org/message/nbx6pk362bdziw4u

[VTD-NEO][patch 6/6] Intel VT-d/Neocleus 1:1 mreged code for PCI passthrough
http://markmail.org/message/m2hyq2ol6r57ghhf

I hope this helps explain that there is a lot more to be done, and from these
patches we may be able to extract the relevant parts .. there seems to be a lot
of functionality in these patches that may already be present in Xen, but I
haven''t deeply reviewed the contents (and probably not the best man to
do so!)

Tim


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Is their code released under GPL?

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On 08/29/2009 09:48 PM, Tim Moore wrote:
>
> All,
>
> _ _
>
> I have compiled a list of the Neocleus patches that were released in 
> Sept 07 and apply to changeset: 15730 (a long time ago!)
>
> It looks like Neocleus have continued development and may have a more 
> recent set of patches, see http://www.neocleus.com/
>
> _ _
>
> As a person with interest in this subject, I have registered for their 
> "Insider Programme" but have not received an communication. I am
very
> interested in what they have been working on as it all seems to be 
> behind closed doors ! http://www.neocleus.com/insider.php
>
> _ _
>
> Anyway here are the old set of 1:1 patches:
>
> _ _
>
> _[VTD-NEO][patch 0/6] Intel VT-d/Neocleus 1:1 mreged code for PCI 
> passthrough_
>
> http://markmail.org/message/xbk2o4mzz4coufzp
>
> _[VTD-NEO][patch 1/6] Intel VT-d/Neocleus 1:1 mreged code for PCI 
> passthrough_
>
> http://markmail.org/message/emyygrqw3crbdhjy
>
> _[VTD-NEO][patch 2/6] Intel VT-d/Neocleus 1:1 mreged code for PCI 
> passthrough_
>
> http://markmail.org/message/kpbxkyvpeiddxnga
>
> _[VTD-NEO][patch 3/6] Intel VT-d/Neocleus 1:1 mreged code for PCI 
> passthrough_
>
> http://markmail.org/message/wqd3gvgiwwrf7ct5
>
> _[VTD-NEO][patch 4/6] Intel VT-d/Neocleus 1:1 mreged code for PCI 
> passthrough_
>
> _http://markmail.org/message/cdqfuc6pgyz7vqpc_
>
> _ _
>
> _[VTD-NEO][patch 5/6] Intel VT-d/Neocleus 1:1 mreged code for PCI 
> passthrough_
>
> http://markmail.org/message/nbx6pk362bdziw4u
>
> _[VTD-NEO][patch 6/6] Intel VT-d/Neocleus 1:1 mreged code for PCI 
> passthrough_
>
> http://markmail.org/message/m2hyq2ol6r57ghhf
>
> I hope this helps explain that there is a lot more to be done, and 
> from these patches we may be able to extract the relevant parts .. 
> there seems to be a lot of functionality in these patches that may 
> already be present in Xen, but I haven''t deeply reviewed the
contents
> (and probably not the best man to do so!)
>
> Tim
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel
>    


_______________________________________________
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http://lists.xensource.com/xen-devel

For passthrough to HVM guests without hardware IOMMU (e.g., VT-d), I
developed the attached prototype patch. I think this may already be in the
XCI tree. It also applies directly to Xen 3.4 branch, and could be applied
quite easily with a small amount of manual intervention to xen-unstable. If
passthough on ''old'' system without hardware assistance is what
you''re after,
you might want to give the patch a go.

 -- Keir

On 29/08/2009 14:48, "Tim Moore" <timothy.moore@expidas.net>
wrote:
> All,
>  
> I have compiled a list of the Neocleus patches that were released in Sept
07
> and apply to changeset:  15730 (a long time ago!)
>  
> It looks like Neocleus have continued development and may have a more
recent
> set of patches, see http://www.neocleus.com/
>  
> As a person with interest in this subject, I have registered for their
> "Insider Programme" but have not received an communication. I am
very
> interested in what they have been working on as it all seems to be behind
> closed doors ! http://www.neocleus.com/insider.php
>  
> Anyway here are the old set of 1:1 patches:
>  
> [VTD-NEO][patch 0/6] Intel VT-d/Neocleus 1:1 mreged code for PCI
passthrough
> http://markmail.org/message/xbk2o4mzz4coufzp
>  
> [VTD-NEO][patch 1/6] Intel VT-d/Neocleus 1:1 mreged code for PCI
passthrough
> http://markmail.org/message/emyygrqw3crbdhjy
>  
> [VTD-NEO][patch 2/6] Intel VT-d/Neocleus 1:1 mreged code for PCI
passthrough
> http://markmail.org/message/kpbxkyvpeiddxnga
>  
> [VTD-NEO][patch 3/6] Intel VT-d/Neocleus 1:1 mreged code for PCI
passthrough
> http://markmail.org/message/wqd3gvgiwwrf7ct5
>  
> [VTD-NEO][patch 4/6] Intel VT-d/Neocleus 1:1 mreged code for PCI
passthrough
> http://markmail.org/message/cdqfuc6pgyz7vqpc
>  
> [VTD-NEO][patch 5/6] Intel VT-d/Neocleus 1:1 mreged code for PCI
passthrough
> http://markmail.org/message/nbx6pk362bdziw4u
>  
> [VTD-NEO][patch 6/6] Intel VT-d/Neocleus 1:1 mreged code for PCI
passthrough
> http://markmail.org/message/m2hyq2ol6r57ghhf
>  
> I hope this helps explain that there is a lot more to be done, and from
these
> patches we may be able to extract the relevant parts .. there seems to be a
> lot of functionality in these patches that may already be present in Xen,
but
> I haven''t deeply reviewed the contents (and probably not the best
man to do
> so!)
>  
> Tim
> 


_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel

On Sun, Aug 30, 2009 at 4:50 PM, Keir Fraser<keir.fraser@eu.citrix.com>
wrote:
> For passthrough to HVM guests without hardware IOMMU (e.g., VT-d), I
> developed the attached prototype patch. I think this may already be in the
> XCI tree. It also applies directly to Xen 3.4 branch, and could be applied
> quite easily with a small amount of manual intervention to xen-unstable. If
> passthough on ''old'' system without hardware assistance is
what you''re after,
> you might want to give the patch a go.
Could you confirm that this patch alone is enough?

I applied the patch against unstable code, and Xen hang up (or seems
to hang up) in the middle of booting up Xen, with a black screen.

Thanks,
J




> On 29/08/2009 14:48, "Tim Moore"
<timothy.moore@expidas.net> wrote:
>
>> All,
>>
>> I have compiled a list of the Neocleus patches that were released in
Sept 07
>> and apply to changeset:  15730 (a long time ago!)
>>
>> It looks like Neocleus have continued development and may have a more
recent
>> set of patches, see http://www.neocleus.com/
>>
>> As a person with interest in this subject, I have registered for their
>> "Insider Programme" but have not received an communication. I
am very
>> interested in what they have been working on as it all seems to be
behind
>> closed doors ! http://www.neocleus.com/insider.php
>>
>> Anyway here are the old set of 1:1 patches:
>>
>> [VTD-NEO][patch 0/6] Intel VT-d/Neocleus 1:1 mreged code for PCI
passthrough
>> http://markmail.org/message/xbk2o4mzz4coufzp
>>
>> [VTD-NEO][patch 1/6] Intel VT-d/Neocleus 1:1 mreged code for PCI
passthrough
>> http://markmail.org/message/emyygrqw3crbdhjy
>>
>> [VTD-NEO][patch 2/6] Intel VT-d/Neocleus 1:1 mreged code for PCI
passthrough
>> http://markmail.org/message/kpbxkyvpeiddxnga
>>
>> [VTD-NEO][patch 3/6] Intel VT-d/Neocleus 1:1 mreged code for PCI
passthrough
>> http://markmail.org/message/wqd3gvgiwwrf7ct5
>>
>> [VTD-NEO][patch 4/6] Intel VT-d/Neocleus 1:1 mreged code for PCI
passthrough
>> http://markmail.org/message/cdqfuc6pgyz7vqpc
>>
>> [VTD-NEO][patch 5/6] Intel VT-d/Neocleus 1:1 mreged code for PCI
passthrough
>> http://markmail.org/message/nbx6pk362bdziw4u
>>
>> [VTD-NEO][patch 6/6] Intel VT-d/Neocleus 1:1 mreged code for PCI
passthrough
>> http://markmail.org/message/m2hyq2ol6r57ghhf
>>
>> I hope this helps explain that there is a lot more to be done, and from
these
>> patches we may be able to extract the relevant parts .. there seems to
be a
>> lot of functionality in these patches that may already be present in
Xen, but
>> I haven''t deeply reviewed the contents (and probably not the
best man to do
>> so!)
>>
>> Tim
>>
>
>
> _______________________________________________
> 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

On 01/09/2009 10:41, "Jun Koi" <junkoi2004@gmail.com> wrote:
> On Sun, Aug 30, 2009 at 4:50 PM, Keir
Fraser<keir.fraser@eu.citrix.com> wrote:
>> For passthrough to HVM guests without hardware IOMMU (e.g., VT-d), I
>> developed the attached prototype patch. I think this may already be in
the
>> XCI tree. It also applies directly to Xen 3.4 branch, and could be
applied
>> quite easily with a small amount of manual intervention to
xen-unstable. If
>> passthough on ''old'' system without hardware
assistance is what you''re after,
>> you might want to give the patch a go.
> 
> Could you confirm that this patch alone is enough?
> 
> I applied the patch against unstable code, and Xen hang up (or seems
> to hang up) in the middle of booting up Xen, with a black screen.
The patch may need a bit more tweaking for -unstable. Let me give it a go.

 -- Keir



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Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel

On Tue, Sep 1, 2009 at 7:08 PM, Keir Fraser<keir.fraser@eu.citrix.com>
wrote:
> On 01/09/2009 10:41, "Jun Koi" <junkoi2004@gmail.com>
wrote:
>
>> On Sun, Aug 30, 2009 at 4:50 PM, Keir
Fraser<keir.fraser@eu.citrix.com> wrote:
>>> For passthrough to HVM guests without hardware IOMMU (e.g., VT-d),
I
>>> developed the attached prototype patch. I think this may already be
in the
>>> XCI tree. It also applies directly to Xen 3.4 branch, and could be
applied
>>> quite easily with a small amount of manual intervention to
xen-unstable. If
>>> passthough on ''old'' system without hardware
assistance is what you''re after,
>>> you might want to give the patch a go.
>>
>> Could you confirm that this patch alone is enough?
>>
>> I applied the patch against unstable code, and Xen hang up (or seems
>> to hang up) in the middle of booting up Xen, with a black screen.
>
> The patch may need a bit more tweaking for -unstable. Let me give it a go.
Actually that patch doesnt cleanly applied to -unstable, and I had to
modify a bit of that patch manually, so it could apply to -unstable.
But perhaps that is not enough?

I look forward to your patch.

Thanks,
J

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel

On 01/09/2009 10:41, "Jun Koi" <junkoi2004@gmail.com> wrote:
> On Sun, Aug 30, 2009 at 4:50 PM, Keir
Fraser<keir.fraser@eu.citrix.com> wrote:
>> For passthrough to HVM guests without hardware IOMMU (e.g., VT-d), I
>> developed the attached prototype patch. I think this may already be in
the
>> XCI tree. It also applies directly to Xen 3.4 branch, and could be
applied
>> quite easily with a small amount of manual intervention to
xen-unstable. If
>> passthough on ''old'' system without hardware
assistance is what you''re after,
>> you might want to give the patch a go.
> 
> Could you confirm that this patch alone is enough?
> 
> I applied the patch against unstable code, and Xen hang up (or seems
> to hang up) in the middle of booting up Xen, with a black screen.
Try the attached patch. Also note that this approach only works for one HVM
domain (the first you create) and that this domain needs to be allocated all
of low physical memory -- this means for example that dom0 cannot allocate
this memory for a swiotlb and you may need ''swiotlb=off'' on
dom0''s kernel
command line.

You can check in /var/log/xen/xend.log to see whether you created a
passthru-capable HVM guest successfully. There should be a message saying
''Domain <foo> is nativedom.'' or ''Domain
<foo> is NOT nativedom.''

 -- Keir



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