From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ferruh Yigit <ferruh.yigit@intel.com>
Subject: Re: [PATCH v7 5/6] igb_uio: use kernel functions for
 masking MSI-X
Date: Thu, 12 Oct 2017 21:58:38 +0100
Message-ID: <abe87772-5edc-8361-8eab-d677ee7a4046@intel.com>
References: <1503336825-7700-1-git-send-email-markus.theil@tu-ilmenau.de>
 <1504613046-7259-1-git-send-email-markus.theil@tu-ilmenau.de>
 <1504613046-7259-5-git-send-email-markus.theil@tu-ilmenau.de>
 <DC5AD7FA266D86499789B1BCAEC715F8D3A269DD@IRSMSX101.ger.corp.intel.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
Cc: "stephen@networkplumber.org" <stephen@networkplumber.org>
To: "Kavanagh, Mark B" <mark.b.kavanagh@intel.com>,
 Markus Theil <markus.theil@tu-ilmenau.de>, "dev@dpdk.org" <dev@dpdk.org>
Return-path: <dev-bounces@dpdk.org>
Received: from mga02.intel.com (mga02.intel.com [134.134.136.20])
 by dpdk.org (Postfix) with ESMTP id 8CC391B3B7
 for <dev@dpdk.org>; Thu, 12 Oct 2017 22:58:40 +0200 (CEST)
In-Reply-To: <DC5AD7FA266D86499789B1BCAEC715F8D3A269DD@IRSMSX101.ger.corp.intel.com>
Content-Language: en-US
List-Id: DPDK patches and discussions <dev.dpdk.org>
List-Unsubscribe: <http://dpdk.org/ml/options/dev>,
 <mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://dpdk.org/ml/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <http://dpdk.org/ml/listinfo/dev>,
 <mailto:dev-request@dpdk.org?subject=subscribe>
Errors-To: dev-bounces@dpdk.org
Sender: "dev" <dev-bounces@dpdk.org>

On 10/12/2017 11:50 AM, Kavanagh, Mark B wrote:
> Hi,
> 
> This commit renders igb_uio unusable on Fedora 20, kernel version 3.19.8-100.fc20.x86_64.
> 
> During the build (make -j 20), a warning is issued for igb_uio regarding a missing symbol (pci_msi_unmask):
> 	WARNING: "pci_msi_unmask_irq" [/home/<redacted>/x86_64-native-linuxapp-gcc/build/lib/librte_eal/linuxapp/igb_uio/igb_uio.ko] undefined!
> 	WARNING: "pci_msi_mask_irq" [/home/<redacted>/x86_64-native-linuxapp-gcc/build/lib/librte_eal/linuxapp/igb_uio/igb_uio.ko] undefined!
> 

Hi Mark,

I can see vanilla 3.19.8 has pci_msi_unmask_irq and pci_msi_mask_irq.

Also I checked Fedora 3.19.8-100.fc20.x86_64 source code, they are still
there.

Not sure why getting this error.

> Subsequently, the module is may not be loaded on account of same.
> (from dmesg): 
> 	[673425.712110] igb_uio: Unknown symbol pci_msi_unmask_irq (err 0)
> 	[673425.712124] igb_uio: Unknown symbol pci_msi_mask_irq (err 0)
> 
> Thanks,
> Mark