From: Thomas Monjalon <thomas@monjalon.net>
To: "Tan, Jianfeng" <jianfeng.tan@intel.com>
Cc: dev@dpdk.org, Joao Martins <joao.m.martins@oracle.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Konrad Rzeszutek Wilk <konrad@kernel.org>,
Xen-devel <xen-devel@lists.xenproject.org>,
techboard@dpdk.org
Subject: Re: [dpdk-dev] [PATCH] maintainers: claim responsability for xen
Date: Mon, 19 Jun 2017 15:22:26 +0200 [thread overview]
Message-ID: <3259340.9y2bTrEvHo@xps> (raw)
In-Reply-To: <ED26CBA2FAD1BF48A8719AEF02201E36511C7F5A@SHSMSX103.ccr.corp.intel.com>
Thanks Jianfeng for giving new ideas.
There is not much activity on Xen side.
Is there someone working on DPDK+Xen? Any news?
The technical board requested to re-consider Xen support in DPDK.
It will be discussed in the next techboard meeting:
https://annuel.framapad.org/p/r.0c3cc4d1e011214183872a98f6b5c7db
11/05/2017 13:41, Tan, Jianfeng:
> Hi Thomas and all,
>
> Apologize for being an unqualified maintainer.
>
> > -----Original Message-----
> From: Thomas Monjalon [mailto:thomas@monjalon.net]
>
> > Ping
> >
> > The Xen dom0 support in DPDK seems dead.
> >
> > Reminder:
> > Last time we talked about, it was because of a severe bug which is not
> > fixed yet:
> > http://dpdk.org/ml/archives/dev/2016-July/044207.html
>
> For this bug, we removed the userspace memset(0) and suppose it has been done by kernel, however, xen0 uses __get_free_pages() kernel API to map hugepages and reseve memseg, I think it makes sense to zero the hugepage for xen0 in rte_dom0_mm kernel module (instead of some special code for xen0 in userspace) to keep aligned behavior.
>
> > http://dpdk.org/ml/archives/dev/2016-July/044376.html
>
> It does not make any sense to upstream a netfront PMD before we have a netback PMD, as the legacy netback driver would be the bottleneck. Anyone has plan on this? And a question mark keeps in my mind that is it a must to implement netback in dom0?
>
> From another perspective, instead of using netfront/netback, we can also use virtio/vhost as the device model; however, xl tool in xen only supports vhost-kernel backend instead of vhost-user backend. So anyone has plan to enhance xl tool so that we can accelerate dom0 just using vswitch like OVS-DPDK?
>
> A third solution is to use xenvirtio as the frontend, and vhost_xen as the backend. This solution is to use virtio ring on grant table mechanism of xen. Honestly, I don't even know if it still work now. And to make it more usable, better to upstream vhost_xen inside popular vswitch like OVS-DPDK.
>
> > The request (9 months ago) was to give more time for feedbacks:
> > http://dpdk.org/ml/archives/dev/2016-July/044847.html
>
> Apologize again that I volunteer to maintain these files, but spend very few time on this.
>
> Thanks,
> Jianfeng
prev parent reply other threads:[~2017-06-19 13:22 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-07 7:38 Jianfeng Tan
2016-11-09 22:03 ` Thomas Monjalon
2016-11-10 18:59 ` Konrad Rzeszutek Wilk
2016-11-10 20:49 ` Tan, Jianfeng
2017-02-16 11:06 ` Thomas Monjalon
2017-02-16 13:02 ` Vincent JARDIN
2017-02-16 13:36 ` Konrad Rzeszutek Wilk
2017-02-16 16:17 ` Jan Blunck
2017-02-16 21:51 ` Vincent JARDIN
2017-02-17 16:07 ` Konrad Rzeszutek Wilk
2017-02-20 9:56 ` Jan Blunck
2017-02-20 17:36 ` Joao Martins
2017-02-20 15:33 ` Joao Martins
2017-02-23 8:49 ` Thomas Monjalon
2017-02-23 20:10 ` Martinx - ジェームズ
2017-05-04 22:04 ` Thomas Monjalon
2017-05-11 11:41 ` Tan, Jianfeng
2017-06-19 13:22 ` Thomas Monjalon [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=3259340.9y2bTrEvHo@xps \
--to=thomas@monjalon.net \
--cc=dev@dpdk.org \
--cc=jianfeng.tan@intel.com \
--cc=joao.m.martins@oracle.com \
--cc=konrad.wilk@oracle.com \
--cc=konrad@kernel.org \
--cc=techboard@dpdk.org \
--cc=xen-devel@lists.xenproject.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).