ATI VGA passthrough and S400 Synchronization module

ATI VGA passthrough and S400 Synchronization module

[Aurélien MILLIAT]

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Hi,

I'm currently trying to use XEN on graphical cluster.
VGA passtrough works fine and I'm able to use quad-buffer for active stereo.
The last thing to do is to synchronize all GPU from the cluster.
For this purpose I use ATI FirePro S400 and it didn't works.

I've seen two behaviors:
-When I run lspci command on Dom0 I've got:
0f:00.0 VGA compatible controller: ATI Technologies Inc Device 6888
0f:00.1 Audio device: ATI Technologies Inc Cypress HDMI Audio [Radeon HD 5800 Series]
And sometimes just
0f:00.0 VGA compatible controller: ATI Technologies Inc Device 6888
-When a DomU(Windows 7) is running, it's very slow (I can't do anything) and crash after several minutes.
I've tried with the unstable version and I've seen the same 'lspci' behavior.

I've a couple of questions:
Is it possible to passthrough a VGA with this extension?
As it's a particular use of VGA passtrough is it planned to able to use synchronization module?
Is it easy to add this feature (time cost)?

Computers : HP Z800 workstation
GPU: ATI FirePro V8800
CPU: Intel Xeon E5640
MB: Intel 5520 chipset

XEN :
Version  4.1.2
With ATI patch from http://old-list-archives.xen.org/archives/html/xen-users/2011-05/msg00048.html
Thanks,
Aurélien Milliat



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Re: ATI VGA passthrough and S400 Synchronization module

[Konrad Rzeszutek Wilk]

On Tue, Jul 24, 2012 at 04:05:20PM +0000, Aurélien MILLIAT wrote:
> Hi,
> 
> I'm currently trying to use XEN on graphical cluster.
> VGA passtrough works fine and I'm able to use quad-buffer for active stereo.
> The last thing to do is to synchronize all GPU from the cluster.
> For this purpose I use ATI FirePro S400 and it didn't works.
> 
> I've seen two behaviors:
> -When I run lspci command on Dom0 I've got:
> 0f:00.0 VGA compatible controller: ATI Technologies Inc Device 6888
> 0f:00.1 Audio device: ATI Technologies Inc Cypress HDMI Audio [Radeon HD 5800 Series]
> And sometimes just
> 0f:00.0 VGA compatible controller: ATI Technologies Inc Device 6888
> -When a DomU(Windows 7) is running, it's very slow (I can't do anything) and crash after several minutes.
> I've tried with the unstable version and I've seen the same 'lspci' behavior.
> 
> I've a couple of questions:
> Is it possible to passthrough a VGA with this extension?

I never tried. I just pass in the VGA card and don't try to pass in the HDMI driver.

> As it's a particular use of VGA passtrough is it planned to able to use synchronization module?

So what is synchronization module for you? That is the HDMI part?

> Is it easy to add this feature (time cost)?
> 
> Computers : HP Z800 workstation
> GPU: ATI FirePro V8800
> CPU: Intel Xeon E5640
> MB: Intel 5520 chipset
> 
> XEN :
> Version  4.1.2
> With ATI patch from http://old-list-archives.xen.org/archives/html/xen-users/2011-05/msg00048.html
> Thanks,
> Aurélien Milliat
> 
> 

> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel

ATI VGA passthrough and S400 Synchronization module

[Aurélien MILLIAT]

>On Tue, Jul 24, 2012 at 04:05:20PM +0000, Aurélien MILLIAT wrote:
>> Hi,
>>
>> I'm currently trying to use XEN on graphical cluster.
>> VGA passtrough works fine and I'm able to use quad-buffer for active stereo.
>> The last thing to do is to synchronize all GPU from the cluster.
>> For this purpose I use ATI FirePro S400 and it didn't works.
>>
>> I've seen two behaviors:
>> -When I run lspci command on Dom0 I've got:
>> 0f:00.0 VGA compatible controller: ATI Technologies Inc Device 6888
>> 0f:00.1 Audio device: ATI Technologies Inc Cypress HDMI Audio [Radeon HD 5800 Series]
>> And sometimes just
>> 0f:00.0 VGA compatible controller: ATI Technologies Inc Device 6888
>> -When a DomU(Windows 7) is running, it's very slow (I can't do anything) and crash after several minutes.
>> I've tried with the unstable version and I've seen the same 'lspci' behavior.
>>
>> I've a couple of questions:
>> Is it possible to passthrough a VGA with this extension?
>
>I never tried. I just pass in the VGA card and don't try to pass in the HDMI driver.
>

I've tried this, usually the computer reboot without any informations in logs. Sometimes XEN raise an error because the VGA can't be passed.

>> As it's a particular use of VGA passtrough is it planned to able to use synchronization module?
>
>So what is synchronization module for you? That is the HDMI part?
>

No, as it's an extension that is directly plug on the VGA card, it's seems that XEN isn't aware of it.

>> Is it easy to add this feature (time cost)?
>>
>> Computers : HP Z800 workstation
>> GPU: ATI FirePro V8800
>> CPU: Intel Xeon E5640
>> MB: Intel 5520 chipset
>>
>> XEN :
>> Version  4.1.2
>> With ATI patch from http://old-list-archives.xen.org/archives/html/xen-users/2011-05/msg00048.html
>> Thanks,
>> Aurélien Milliat
>>
>>
>
>> _______________________________________________
>> Xen-devel mailing list
>> Xen-devel@lists.xen.org
>> http://lists.xen.org/xen-devel

Re: ATI VGA passthrough and S400 Synchronization module

[Aurélien MILLIAT]

Hi,

I've been able to use ATI FirePro S400 with the unstable version. I've updated my Dom0 and pass the graphic card as secondary adaptor.
I've made a quick test for Xen 4.1.2 with these updates but it's still crash (no matter I will use the unstable version).

Aurélien 
_______________________________________________

On Tue, Jul 24, 2012 at 04:05:20PM +0000, Aurélien MILLIAT wrote:
> Hi,
> 
> I'm currently trying to use XEN on graphical cluster.
> VGA passtrough works fine and I'm able to use quad-buffer for active stereo.
> The last thing to do is to synchronize all GPU from the cluster.
> For this purpose I use ATI FirePro S400 and it didn't works.
> 
> I've seen two behaviors:
> -When I run lspci command on Dom0 I've got:
> 0f:00.0 VGA compatible controller: ATI Technologies Inc Device 6888
> 0f:00.1 Audio device: ATI Technologies Inc Cypress HDMI Audio [Radeon HD 5800 Series]
> And sometimes just
> 0f:00.0 VGA compatible controller: ATI Technologies Inc Device 6888
> -When a DomU(Windows 7) is running, it's very slow (I can't do anything) and crash after several minutes.
> I've tried with the unstable version and I've seen the same 'lspci' behavior.
> 
> I've a couple of questions:
> Is it possible to passthrough a VGA with this extension?

I never tried. I just pass in the VGA card and don't try to pass in the HDMI driver.

> As it's a particular use of VGA passtrough is it planned to able to use synchronization module?

So what is synchronization module for you? That is the HDMI part?

> Is it easy to add this feature (time cost)?
> 
> Computers : HP Z800 workstation
> GPU: ATI FirePro V8800
> CPU: Intel Xeon E5640
> MB: Intel 5520 chipset
> 
> XEN :
> Version  4.1.2
> With ATI patch from http://old-list-archives.xen.org/archives/html/xen-users/2011-05/msg00048.html
> Thanks,
> Aurélien Milliat
> 
> 

> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel

Re: ATI VGA passthrough and S400 Synchronization module

[Konrad Rzeszutek Wilk]

On Wed, Aug 22, 2012 at 04:23:02PM +0000, Aurélien MILLIAT wrote:
> Hi,
> 
> I've been able to use ATI FirePro S400 with the unstable version. I've updated my Dom0 and pass the graphic card as secondary adaptor.


Please do not top post. What did you upgrade dom0 to?

> I've made a quick test for Xen 4.1.2 with these updates but it's still crash (no matter I will use the unstable version).
> 
> Aurélien 
> _______________________________________________
> 
> On Tue, Jul 24, 2012 at 04:05:20PM +0000, Aurélien MILLIAT wrote:
> > Hi,
> > 
> > I'm currently trying to use XEN on graphical cluster.
> > VGA passtrough works fine and I'm able to use quad-buffer for active stereo.
> > The last thing to do is to synchronize all GPU from the cluster.
> > For this purpose I use ATI FirePro S400 and it didn't works.
> > 
> > I've seen two behaviors:
> > -When I run lspci command on Dom0 I've got:
> > 0f:00.0 VGA compatible controller: ATI Technologies Inc Device 6888
> > 0f:00.1 Audio device: ATI Technologies Inc Cypress HDMI Audio [Radeon HD 5800 Series]
> > And sometimes just
> > 0f:00.0 VGA compatible controller: ATI Technologies Inc Device 6888
> > -When a DomU(Windows 7) is running, it's very slow (I can't do anything) and crash after several minutes.
> > I've tried with the unstable version and I've seen the same 'lspci' behavior.
> > 
> > I've a couple of questions:
> > Is it possible to passthrough a VGA with this extension?
> 
> I never tried. I just pass in the VGA card and don't try to pass in the HDMI driver.
> 
> > As it's a particular use of VGA passtrough is it planned to able to use synchronization module?
> 
> So what is synchronization module for you? That is the HDMI part?
> 
> > Is it easy to add this feature (time cost)?
> > 
> > Computers : HP Z800 workstation
> > GPU: ATI FirePro V8800
> > CPU: Intel Xeon E5640
> > MB: Intel 5520 chipset
> > 
> > XEN :
> > Version  4.1.2
> > With ATI patch from http://old-list-archives.xen.org/archives/html/xen-users/2011-05/msg00048.html
> > Thanks,
> > Aurélien Milliat
> > 
> > 
> 
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@lists.xen.org
> > http://lists.xen.org/xen-devel
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel
> 

Re: ATI VGA passthrough and S400 Synchronization module

[Aurélien MILLIAT]

On Wed, Aug 22, 2012 at 04:23:02PM +0000, Aurélien MILLIAT wrote:
> Hi,
> 
> I've been able to use ATI FirePro S400 with the unstable version. I've updated my Dom0 and pass the graphic card as secondary adaptor.
>
>
>Please do not top post.
Sorry !
>
> What did you upgrade dom0 to?
>

I've update Debian 6.0.4 to 6.0.5, update all packages and remove everything I've made from my previous test. 

I've continue my tests and I've got an issue with active stereo. Previously, I've got tested active stereo with the stable release.  

On unstable version, only the right eye is render (OGLplane and Virtools demos).
Quad buffer is on, everything seems to be setup as usual for active stereo. 
I've tried with and without the S400 card.

I will try to gather more informations about this.

>
> I've made a quick test for Xen 4.1.2 with these updates but it's still crash (no matter I will use the unstable version).
>
> Aurélien
> _______________________________________________
> 
> On Tue, Jul 24, 2012 at 04:05:20PM +0000, Aurélien MILLIAT wrote:
> > Hi,
> > 
> > I'm currently trying to use XEN on graphical cluster.
> > VGA passtrough works fine and I'm able to use quad-buffer for active stereo.
> > The last thing to do is to synchronize all GPU from the cluster.
> > For this purpose I use ATI FirePro S400 and it didn't works.
> > 
> > I've seen two behaviors:
> > -When I run lspci command on Dom0 I've got:
> > 0f:00.0 VGA compatible controller: ATI Technologies Inc Device 6888
> > 0f:00.1 Audio device: ATI Technologies Inc Cypress HDMI Audio 
> > [Radeon HD 5800 Series] And sometimes just
> > 0f:00.0 VGA compatible controller: ATI Technologies Inc Device 6888 
> > -When a DomU(Windows 7) is running, it's very slow (I can't do anything) and crash after several minutes.
> > I've tried with the unstable version and I've seen the same 'lspci' behavior.
> > 
> > I've a couple of questions:
> > Is it possible to passthrough a VGA with this extension?
> 
> I never tried. I just pass in the VGA card and don't try to pass in the HDMI driver.
> 
> > As it's a particular use of VGA passtrough is it planned to able to use synchronization module?
> 
> So what is synchronization module for you? That is the HDMI part?
> 
> > Is it easy to add this feature (time cost)?
> > 
> > Computers : HP Z800 workstation
> > GPU: ATI FirePro V8800
> > CPU: Intel Xeon E5640
> > MB: Intel 5520 chipset
> > 
> > XEN :
> > Version  4.1.2
> > With ATI patch from 
> > http://old-list-archives.xen.org/archives/html/xen-users/2011-05/msg
> > 00048.html
> > Thanks,
> > Aurélien Milliat
> > 
> > 
> 
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@lists.xen.org
> > http://lists.xen.org/xen-devel
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel
> 

Re: ATI VGA passthrough and S400 Synchronization module

[Aurélien MILLIAT]

>On Wed, Aug 22, 2012 at 04:23:02PM +0000, Aurélien MILLIAT wrote:
>> On Tue, Jul 24, 2012 at 04:05:20PM +0000, Aurélien MILLIAT wrote:
>> > Hi,
>> > 
>> > I'm currently trying to use XEN on graphical cluster.
>> > VGA passtrough works fine and I'm able to use quad-buffer for active stereo.
>> > The last thing to do is to synchronize all GPU from the cluster.
>> > For this purpose I use ATI FirePro S400 and it didn't works.
>> > 
>> > I've seen two behaviors:
>> > -When I run lspci command on Dom0 I've got:
>> > 0f:00.0 VGA compatible controller: ATI Technologies Inc Device 6888
>> > 0f:00.1 Audio device: ATI Technologies Inc Cypress HDMI Audio 
>> > [Radeon HD 5800 Series] And sometimes just
>> > 0f:00.0 VGA compatible controller: ATI Technologies Inc Device 6888 
>> > -When a DomU(Windows 7) is running, it's very slow (I can't do anything) and crash after several minutes.
>> > I've tried with the unstable version and I've seen the same 'lspci' behavior.
>> > 
>> > I've a couple of questions:
>> > Is it possible to passthrough a VGA with this extension?
>> 
>> I never tried. I just pass in the VGA card and don't try to pass in the HDMI driver.
>> 
>> > As it's a particular use of VGA passtrough is it planned to able to use synchronization module?
>> 
>> So what is synchronization module for you? That is the HDMI part?
>> 
>> > Is it easy to add this feature (time cost)?
>> > 
>> > Computers : HP Z800 workstation
>> > GPU: ATI FirePro V8800
>> > CPU: Intel Xeon E5640
>> > MB: Intel 5520 chipset
>> > 
>> > XEN :
>> > Version  4.1.2
>> > With ATI patch from
>> > http://old-list-archives.xen.org/archives/html/xen-users/2011-05/msg
>> > 00048.html
>> > Thanks,
>> > Aurélien Milliat
>> > 
>> Hi,
>> 
>> I've been able to use ATI FirePro S400 with the unstable version. I've updated my Dom0 and pass the graphic card as secondary adaptor.
>>
>>
>>Please do not top post.
>Sorry !
>>
>> What did you upgrade dom0 to?
>>
>
>I've update Debian 6.0.4 to 6.0.5, update all packages and remove everything I've made from my previous test. 
>
>I've continue my tests and I've got an issue with active stereo. Previously, I've got tested active stereo with the stable release.  
>
>On unstable version, only the right eye is render (OGLplane and Virtools demos).
>Quad buffer is on, everything seems to be setup as usual for active stereo. 
>I've tried with and without the S400 card.
>
>I will try to gather more informations about this.
>
>>
>> I've made a quick test for Xen 4.1.2 with these updates but it's still crash (no matter I will use the unstable version).
>>
>> Aurélien
>> 
Hi,

I've got the time to run some test to find what's going on with the active stereo with the following configuration:

release                : 2.6.32-5-xen-amd64
version                : #1 SMP Sun May 6 08:57:29 UTC 2012
machine                : x86_64
nr_cpus                : 8
nr_nodes               : 1
cores_per_socket       : 4
threads_per_core       : 2
cpu_mhz                : 2660
hw_caps                : bfebfbff:2c100800:00000000:00003f40:029ee3ff:00000000:00000001:00000000
virt_caps              : hvm hvm_directio
total_memory           : 4079
free_cpus              : 0
xen_major              : 4
xen_minor              : 2
xen_extra              : -unstable
xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64 
xen_scheduler          : credit
xen_pagesize           : 4096
platform_params        : virt_start=0xffff800000000000
xen_changeset          : Sun Jul 22 16:37:25 2012 +0100 25622:3c426da4788e
xen_commandline        : placeholder
cc_compiler            : gcc version 4.4.5 (Debian 4.4.5-8) 
xend_config_format     : 4

I've tested with:
-XP SP2 and SP3 32bits (Pro): 
	+ Driver (version: 2012.07.11): active stereo (quadbuffer) enable, S400 found.
	+ OGLplane: Impossible to run active stereo mode: "OpenGL stereo not supported".

-Windows 7 32 bits (Pro):
	+ Driver (version: 2012.07.11): active stereo enable, S400 found.
	+ OGLplane: run without sync signal and render only one eye.

-Windows 8 64bits (debug checked build):
	+ Driver (version: 2012.07.11): active stereo enable, S400 found.
	+ OGLplane: active stereo seems to be ok.

I will run some tests with the same configuration:
-Windows 7 64 bits (Pro)
-Windows 8 64bits (Final)
-Windows 8 32bits (Final)

I've made a quick test on Xen 4.2.0-rc2 with a compiled kernel from:
http://wiki.xen.org/wiki/Mainline_Linux_Kernel_Configs
Windows 7 has the same behavior and I haven't tried other OS.

Does anyone have run tests for active stereo with VGA passthrough?

Thanks,
Aurélien
>> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@lists.xen.org
> > http://lists.xen.org/xen-devel
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel
> 

Re: ATI VGA passthrough and S400 Synchronization module

[Aurélien MILLIAT]

>>On Wed, Aug 22, 2012 at 04:23:02PM +0000, Aurélien MILLIAT wrote:
>>> On Tue, Jul 24, 2012 at 04:05:20PM +0000, Aurélien MILLIAT wrote:
>>> > Hi,
>>> > 
>>> > I'm currently trying to use XEN on graphical cluster.
>>> > VGA passtrough works fine and I'm able to use quad-buffer for active stereo.
>>> > The last thing to do is to synchronize all GPU from the cluster. 
>>> > For this purpose I use ATI FirePro S400 and it didn't works.
>>> > 
>>> > I've seen two behaviors:
>>> > -When I run lspci command on Dom0 I've got:
>>> > 0f:00.0 VGA compatible controller: ATI Technologies Inc Device 6888
>>> > 0f:00.1 Audio device: ATI Technologies Inc Cypress HDMI Audio 
>>> > [Radeon HD 5800 Series] And sometimes just
>>> > 0f:00.0 VGA compatible controller: ATI Technologies Inc Device 6888 
>>> > -When a DomU(Windows 7) is running, it's very slow (I can't do anything) and crash after several minutes.
>>> > I've tried with the unstable version and I've seen the same 'lspci' behavior.
>>> > 
>>> > I've a couple of questions:
>>> > Is it possible to passthrough a VGA with this extension?
>>> 
>>> I never tried. I just pass in the VGA card and don't try to pass in the HDMI driver.
>>> 
>>> > As it's a particular use of VGA passtrough is it planned to able to use synchronization module?
>>> 
>>> So what is synchronization module for you? That is the HDMI part?
>>> 
>>> > Is it easy to add this feature (time cost)?
>>> > 
>>> > Computers : HP Z800 workstation
>>> > GPU: ATI FirePro V8800
>>> > CPU: Intel Xeon E5640
>>> > MB: Intel 5520 chipset
>>> > 
>>> > XEN :
>>> > Version  4.1.2
>>> > With ATI patch from
>>> > http://old-list-archives.xen.org/archives/html/xen-users/2011-05/msg
>>> > 00048.html
>>> > Thanks,
>>> > Aurélien Milliat
>> >> 
>>> Hi,
>>> 
>>> I've been able to use ATI FirePro S400 with the unstable version. I've updated my Dom0 and pass the graphic card as secondary adaptor.
>>>
>>>
>>>Please do not top post.
>>Sorry !
>>>
>>> What did you upgrade dom0 to?
>>>
>>
>>I've update Debian 6.0.4 to 6.0.5, update all packages and remove everything I've made from my previous test. 
>>
>>I've continue my tests and I've got an issue with active stereo. Previously, I've got tested active stereo with the stable release.  
>>
>>On unstable version, only the right eye is render (OGLplane and Virtools demos).
>>Quad buffer is on, everything seems to be setup as usual for active stereo. 
>>I've tried with and without the S400 card.
>>
>>I will try to gather more informations about this.
>>
>>>
>>> I've made a quick test for Xen 4.1.2 with these updates but it's still crash (no matter I will use the unstable version).
>>>
>>> Aurélien
>>> 
>Hi,
>
>I've got the time to run some test to find what's going on with the active stereo with the following configuration:
>
>release                : 2.6.32-5-xen-amd64
>version                : #1 SMP Sun May 6 08:57:29 UTC 2012
>machine                : x86_64
>nr_cpus                : 8
>nr_nodes               : 1
>cores_per_socket       : 4
>threads_per_core       : 2
>cpu_mhz                : 2660
>hw_caps                : bfebfbff:2c100800:00000000:00003f40:029ee3ff:00000000:00000001:00000000
>virt_caps              : hvm hvm_directio
>total_memory           : 4079
>free_cpus              : 0
>xen_major              : 4
>xen_minor              : 2
>xen_extra              : -unstable
>xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64 
>xen_scheduler          : credit
>xen_pagesize           : 4096
>platform_params        : virt_start=0xffff800000000000
>xen_changeset          : Sun Jul 22 16:37:25 2012 +0100 25622:3c426da4788e
>xen_commandline        : placeholder
>cc_compiler            : gcc version 4.4.5 (Debian 4.4.5-8) 
>xend_config_format     : 4

>I've tested with:
>-XP SP2 and SP3 32bits (Pro): 
>	+ Driver (version: 2012.07.11): active stereo (quadbuffer) enable, S400 found.
>	+ OGLplane: Impossible to run active stereo mode: "OpenGL stereo not supported".
>
>-Windows 7 32 bits (Pro):
>	+ Driver (version: 2012.07.11): active stereo enable, S400 found.
>	+ OGLplane: run without sync signal and render only one eye.
>
>-Windows 8 64bits (debug checked build):
>	+ Driver (version: 2012.07.11): active stereo enable, S400 found.
>	+ OGLplane: active stereo seems to be ok.
>
>I will run some tests with the same configuration:
>-Windows 7 64 bits (Pro)
>-Windows 8 64bits (Final)
>-Windows 8 32bits (Final)

Finally it's done!
I'm able to run VMs with all functionality needed for VR context:
-Quadbuffer
-Genlock
-Swaplock

I've tried in a CAVE system (http://en.wikipedia.org/wiki/Cave_automatic_virtual_environment) and it's perfect!
- Windows 7 is ok.
- Windows 8 seems to be driver issue.

I've started to compare some behaviors with native installation, at this point all those behaviors comes from drivers.
I will try to make it work with XP.

I think we will see XEN be used in lot of Virtual Reality / Augmented Reality labs!

>I've made a quick test on Xen 4.2.0-rc2 with a compiled kernel from:
>http://wiki.xen.org/wiki/Mainline_Linux_Kernel_Configs
>Windows 7 has the same behavior and I haven't tried other OS.
>
>Does anyone have run tests for active stereo with VGA passthrough?
>
>Thanks,
>Aurélien
>>> > _______________________________________________
>> > Xen-devel mailing list
>> > Xen-devel@lists.xen.org
>> > http://lists.xen.org/xen-devel
>> 
>> 
>> _______________________________________________
>> Xen-devel mailing list
>> Xen-devel@lists.xen.org
>> http://lists.xen.org/xen-devel