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From: Shijith Thotton <shijith.thotton@caviumnetworks.com>
To: "Yang, Qiming" <qiming.yang@intel.com>
Cc: Thomas Monjalon <thomas@monjalon.net>,
	"dev@dpdk.org" <dev@dpdk.org>,
	"Tan, Jianfeng" <jianfeng.tan@intel.com>,
	"Thotton, Shijith" <Shijith.Thotton@cavium.com>,
	"Hu, Xuekun" <xuekun.hu@intel.com>,
	"Yigit, Ferruh" <ferruh.yigit@intel.com>,
	"Patil, Harish" <Harish.Patil@cavium.com>,
	Gregory Etelson <gregory@weka.io>,
	"stable@dpdk.org" <stable@dpdk.org>
Subject: Re: [dpdk-dev] vf init issue with patch igb_uio: issue FLR during open and release of device file
Date: Fri, 15 Sep 2017 15:01:19 +0530	[thread overview]
Message-ID: <20170915093118.GA6367@localhost.localdomain> (raw)
In-Reply-To: <F5DF4F0E3AFEF648ADC1C3C33AD4DBF16F7EA492@SHSMSX151.ccr.corp.intel.com>

On Fri, Sep 15, 2017 at 09:18:00AM +0000, Yang, Qiming wrote:
> > -----Original Message-----
> > From: Thomas Monjalon [mailto:thomas@monjalon.net]
> > Sent: Friday, September 15, 2017 4:43 PM
> > To: Yang, Qiming <qiming.yang@intel.com>
> > Cc: dev@dpdk.org; Tan, Jianfeng <jianfeng.tan@intel.com>; Thotton, Shijith
> > <Shijith.Thotton@cavium.com>; Hu, Xuekun <xuekun.hu@intel.com>; Yigit,
> > Ferruh <ferruh.yigit@intel.com>; Patil, Harish <Harish.Patil@cavium.com>;
> > Gregory Etelson <gregory@weka.io>; stable@dpdk.org
> > Subject: Re: [dpdk-dev] vf init issue with patch igb_uio: issue FLR during open
> > and release of device file
> > 
> > Hi
> > 
> > 15/09/2017 10:04, Yang, Qiming:
> > > Hi, Thomas
> > > We meet a urgent issue because of Shijith's patch.
> > > When use DPDK version 17.08, DPDK VF driver and kernel PF driver, i40e, ixgbe
> > and qede(Harish said) VF all meet initial failure.
> > 
> > This patch has been integrated in DPDK 17.08-rc2 (2 months ago).
> > Why a so obvious issue is discovered only now?
> > 
> > > This issue only occurred when use 17.08 igb_uio, vfio-pci and 17.05 igb_uio all
> > works well.
> > > Considering this issue will block our vf driver develop and test work, could we
> > revert this patch first and find another appropriate way?
> > 
> > We need to be sure the revert is the right solution because it will be backported
> > to the stable 17.08 release.
> > 
> > Shijith suggests to "try removing pci_reset_function from igbuio_pci_open."
> > Can we try this first?
> > Are we sure the bug is not in new firmwares?
> 
> I have tried to remove pci_reset_function, it works in my environment, but it doesn't work in someone's enviroment.
> And removing this function won't it changes the original purpose of his patch?  So I'm not sure it is a good solution.
> This bug is not a firmware version related issue, we can reproduce stably with older firmware.
> 

There is a reset during release which was suggested as a fix by Gregory for an
issue he faced with i40e VF[1]. Removing it can cause problems for him.

1. http://dpdk.org/ml/archives/dev/2017-May/066317.html

  parent reply	other threads:[~2017-09-15  9:31 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-09-13  7:51 Yang, Qiming
2017-09-13 10:48 ` Shijith Thotton
2017-09-13 11:03   ` Ferruh Yigit
2017-09-13 14:25     ` Hu, Xuekun
2017-09-13 17:06       ` Ferruh Yigit
2017-09-13 19:44         ` Patil, Harish
2017-09-15  8:04           ` Yang, Qiming
2017-09-15  8:42             ` Thomas Monjalon
2017-09-15  9:18               ` Yang, Qiming
2017-09-15  9:25                 ` Ferruh Yigit
2017-09-15  9:31                 ` Shijith Thotton [this message]
2017-09-17  2:49             ` Gregory Etelson
2017-09-18  2:21               ` Yang, Qiming
2017-09-18  2:39                 ` Zhang, Helin
2017-09-18  3:50                   ` Yang, Qiming
2017-09-18  6:49                     ` Shijith Thotton
2017-09-18 19:33                       ` Ferruh Yigit
2017-09-18 22:43                       ` Patil, Harish
2017-09-14  3:16         ` Yang, Qiming
2017-09-14  7:00           ` Shijith Thotton
2017-09-14  7:15             ` Shijith Thotton
2017-09-14  1:23   ` Yang, Qiming
2017-09-19 10:24 ` [dpdk-dev] [PATCH] igb_uio: remove PCI reset during uio device open Shijith Thotton
2017-09-20 16:52   ` Ferruh Yigit
2017-09-21 10:00   ` Luca Boccassi
2017-09-22  2:47   ` Yang, Qiming
2017-09-29 12:57   ` Wu, Jingjing
2017-10-02 18:24     ` Shijith Thotton
2017-10-03 11:35       ` Gregory Etelson
2017-10-13 14:36         ` Shijith Thotton
2017-10-13 14:51 ` [dpdk-dev] [PATCH] igb_uio: revert open and release operations Thomas Monjalon
2017-10-13 21:05   ` Ferruh Yigit
2017-10-13 21:11     ` Thomas Monjalon
2017-10-13 21:17       ` Thomas Monjalon

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