Re: [Xen-devel] [dpdk-dev] [PATCH] maintainers: claim responsability for xen

[Jan Blunck <jblunck@xxxxxxxxxxxxx>]

On Fri, Feb 17, 2017 at 5:07 PM, Konrad Rzeszutek Wilk
<konrad.wilk@xxxxxxxxxx> wrote:
> On Thu, Feb 16, 2017 at 10:51:44PM +0100, Vincent JARDIN wrote:
>> Le 16/02/2017 à 14:36, Konrad Rzeszutek Wilk a écrit :
>> > > Is it time now to officially remove Dom0 support?
>> > So we do have an prototype implementation of netback but it is waiting
>> > for review of xen-devel to the spec.
>> >
>> > And I believe the implementation does utilize some of the dom0
>> > parts of code in DPDK.
>>
>> Please, do you have URLs/pointers about it? It would be interesting to share
>> it with DPDK community too.
>
> Joao, would it be possible to include an tarball of the patches? I know
> they are no in the right state with the review of the staging
> grants API - they are incompatible, but it may help folks to get
> a feel for what DPDK APIs you used?
>
> Staging grants API:
> https://lists.xenproject.org/archives/html/xen-devel/2016-12/msg01878.html
>

The topic of the grants API is unrelated to the dom0 memory pool. The
memory pool which uses xen_create_contiguous_region() is used in cases
we know that there are no hugepages available.

Joao and I met in Dublin and I whined about not being able to call
into the grants API from userspace and instead need to kick a kernel
driver to do the work for every burst. It would be great if that could
change in the future.

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