[dpdk-dev] building LIBRTE_PMD_XENVIRT in 32bit triggers some errors

Xie, Huawei huawei.xie at intel.com
Thu Dec 10 05:45:06 CET 2015


On 12/10/2015 6:49 AM, Martinx - ジェームズ wrote:
> On 9 December 2015 at 18:05, Thomas Monjalon <thomas.monjalon at 6wind.com> wrote:
>> 2015-12-09 15:54, Martinx - ジェームズ:
>>>  Sorry to insist on this subject but, the time for releasing DPDK 2.2
>>> is near and DPDK build with Xen 32-bit is broken.
>>>
>>>  If DPDK doesn't fix this, there will be no way to enable XenVirt
>>> support for next Ubuntu LTS 16.04, which is a shame...
>>>
>>>  I'm planning to use DPDK on Xen domUs (PVM, HVM, XenServer and on
>>> Amazon EC2) powered exclusively by a supported version of Ubuntu but,
>>> it is broken now...
>>>
>>>  So, please, can someone take a look into this?    :-P
>>>
>>>  Thanks in advance!
>> Sorry, this area has no maintainer:
>>         http://dpdk.org/browse/dpdk/tree/MAINTAINERS#n169
>>
>> In such case, it may be logic to remove the dead code.
>> If someone wants to make it alive, he's welcome!
> Hi Thomas,
>
>  Listen, if DPDK on Xen has no maintainer, where can I find the
> current state of DPDK on Xen?
>
>  I mean, I'm planning to use DPDK with Xen on the following environments:
>
>  * Amazon EC2 - HVM Enhanced Networking - *priority*
>  * XenServer
>  * Open Source Xen on Debian / Ubuntu (both PVM / HVM)
>
>  But, if Xen support on DPDK has no maintainer, how to you guys are
> running DPDK on top of Xen (like for example, within Amazon EC2)?
>
>  If I google for "DPDK Xen", I can find lots of good information but,
> I can't find recommended setup / drivers...
>
>  Do you have any recommendation?
Thiago:
This xen PMD is based on grant table mechanism and virtio interface.
Worth to note is it needs customized backend, which now resides in
examples/vhost_xen.
Another approach is netfront based PMD, which has kernel netback backend
in place, but i guess it couldn't achieve best performance as we need
map each grant page in backend. Stephen submitted the patch for netfront
PMD http://dpdk.org/dev/patchwork/patch/3330/. Thomas, do you know its
status?
Anyway i will try to create the XEN environment, and check the issues.

>
>  Thank you!
>
> Best,
> Thiago
>



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