-----Original Message-----
From: Thomas Monjalon <[email protected]>
Date: Tuesday, October 17, 2017 at 1:33 PM
To: Ferruh Yigit <[email protected]>, Harish Patil
<[email protected]>
Cc: "[email protected]" <[email protected]>, Jianfeng Tan <[email protected]>,
Jingjing Wu <[email protected]>, "Thotton, Shijith"
<[email protected]>, Gregory Etelson <[email protected]>, George
Prekas <[email protected]>, "[email protected]" <[email protected]>
Subject: Re: [PATCH] igb_uio: revert open and release operations

>17/10/2017 22:14, Ferruh Yigit:
>> There were bug reports about terminated application may leave device in
>> undesired state:
>> http://dpdk.org/ml/archives/dev/2016-November/049745.html
>> http://dpdk.org/ml/archives/dev/2016-November/050932.html
>> 
>> And a proposal to fix:
>> http://dpdk.org/ml/archives/dev/2016-December/051844.html
>> 
>> Later another proposal triggered the discussion:
>> http://dpdk.org/ml/archives/dev/2017-May/066317.html
>> 
>> Finally a fix patch pushed into v17.08:
>> Commit: b58eedfc7dd5 ("igb_uio: issue FLR during open and release of
>>device file")
>> 
>> Later a regression report sent related to the pushed patch:
>> http://dpdk.org/ml/archives/dev/2017-September/075236.html
>> 
>> And a fix for regression integrated into v17.11-rc1:
>> http://dpdk.org/ml/archives/dev/2017-October/079166.html
>> Commit: 5f6ff30dc507 ("igb_uio: fix interrupt enablement after FLR in
>>VM")
>> Commit: 6b9ed026a870 ("igb_uio: fix build with kernel <= 3.17")
>> 
>> Even after the fix qede PMD reported to be broken:
>> http://dpdk.org/ml/archives/dev/2017-October/079359.html
>> 
>> So this patch reverts original fix and related commits. The related
>> igb_uio code part turns back to v17.05 base.
>[...]
>> ---
>> It would be nice to solve this issue in LTS release, but being close to
>> the release and the error report without details makes it hard to work
>> more on this issue.
>
>With this revert, we are back to the original issue.
>We must really try the proposed solution.
>Harish, please describe your issue and think how it could be fixed.
>Jingjing made it work for i40e.
>I know it is less effort to request a simple revert.
>Please let's try to fix it once for all.

Hi Ferruh/Thomas,
I’m discussing it internally, so please hold on committing this patch till
I revert back to you.

Thanks.


>

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