From: Ferruh Yigit <ferruh.yigit@intel.com>
To: "Tan, Jianfeng" <jianfeng.tan@intel.com>,
Alejandro Lucero <alejandro.lucero@netronome.com>
Cc: Gregory Etelson <gregory@weka.io>, dev <dev@dpdk.org>,
"users@dpdk.org" <users@dpdk.org>
Subject: Re: [dpdk-users] [dpdk-dev] IGB_UIO: PCI Resources Management
Date: Fri, 13 Jan 2017 02:04:49 +0000 [thread overview]
Message-ID: <7605618f-dc86-3060-473e-aff5545cac72@intel.com> (raw)
In-Reply-To: <ED26CBA2FAD1BF48A8719AEF02201E3651111AE6@SHSMSX103.ccr.corp.intel.com>
On 1/13/2017 1:51 AM, Tan, Jianfeng wrote:
>
>
>> -----Original Message-----
>> From: users [mailto:users-bounces@dpdk.org] On Behalf Of Ferruh Yigit
>> Sent: Thursday, January 12, 2017 8:22 PM
>> To: Alejandro Lucero
>> Cc: Gregory Etelson; dev; users@dpdk.org
>> Subject: Re: [dpdk-users] [dpdk-dev] IGB_UIO: PCI Resources Management
>>
>> On 1/12/2017 12:12 PM, Alejandro Lucero wrote:
>>>
>>>
>>> On Thu, Jan 12, 2017 at 11:55 AM, Ferruh Yigit <ferruh.yigit@intel.com
>>> <mailto:ferruh.yigit@intel.com>> wrote:
>>>
>>> On 12/9/2016 8:54 AM, Gregory Etelson wrote:
>>> > Hello,
>>> >
>>> > IGB_UIO driver does not close port PCI activities after DPDK process
>> exits.
>>> > DPDK API provides rte_eth_dev_close() to manage port PCI,
>>> > but it can be skipped if process receives SIGKILL signal
>>>
>>> I guess I understand the problem.
>>>
>>>
>>> This is a known problem, but it is not just a UIO problem, and this
>>> patch does not solve it, maybe it just solves part of it.
>>>
>>> In fact, a DPDK program crashing could imply the NIC DMAing after that
>>> and after that memory was assigned to another program.
>>
>> Yes.
>> Can there be a way to stop NIC DMA, (or prevent it access to mem
>> anymore) when app crashes?
>> I think that is what this patch is looking for.
>
> If I understand it correctly, you are looking for this patch?
> http://dpdk.org/dev/patchwork/patch/17495/
>
That is good, thanks Jianfeng, I will check it.
btw, patch's current state is rejected, which is by mistake, it seems I
confused it with "iomem and ioport mapping" patch, sorry about it, I
will update its status immediately.
next prev parent reply other threads:[~2017-01-13 2:04 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-09 8:54 [dpdk-users] " Gregory Etelson
2017-01-12 11:55 ` Ferruh Yigit
2017-01-12 12:12 ` [dpdk-users] [dpdk-dev] " Alejandro Lucero
2017-01-12 12:22 ` Ferruh Yigit
2017-01-12 12:58 ` Alejandro Lucero
2017-01-13 1:51 ` Tan, Jianfeng
2017-01-13 2:04 ` Ferruh Yigit [this message]
2017-01-13 5:33 ` Tan, Jianfeng
2017-01-13 11:10 ` Alejandro Lucero
2017-01-19 16:36 ` Ferruh Yigit
2017-01-19 20:33 ` Alejandro Lucero
2017-01-19 15:59 ` Ferruh Yigit
2017-01-19 16:09 ` George Prekas
2017-01-20 5:09 ` Tan, Jianfeng
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=7605618f-dc86-3060-473e-aff5545cac72@intel.com \
--to=ferruh.yigit@intel.com \
--cc=alejandro.lucero@netronome.com \
--cc=dev@dpdk.org \
--cc=gregory@weka.io \
--cc=jianfeng.tan@intel.com \
--cc=users@dpdk.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).