From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 1C15AA00C2; Thu, 3 Feb 2022 12:28:22 +0100 (CET) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id AD3BF40143; Thu, 3 Feb 2022 12:28:21 +0100 (CET) Received: from inbox.dpdk.org (inbox.dpdk.org [95.142.172.178]) by mails.dpdk.org (Postfix) with ESMTP id 70C8440140 for ; Thu, 3 Feb 2022 12:28:20 +0100 (CET) Received: by inbox.dpdk.org (Postfix, from userid 33) id 44AFFA00C3; Thu, 3 Feb 2022 12:28:20 +0100 (CET) From: bugzilla@dpdk.org To: dev@dpdk.org Subject: [Bug 933] Issue with parsing devargs syntax on Hyper-V platforms with DPDK-21.11 Date: Thu, 03 Feb 2022 11:28:19 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: DPDK X-Bugzilla-Component: other X-Bugzilla-Version: 21.11 X-Bugzilla-Keywords: X-Bugzilla-Severity: major X-Bugzilla-Who: madhuker.mythri@oracle.com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: Normal X-Bugzilla-Assigned-To: dev@dpdk.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter target_milestone Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All MIME-Version: 1.0 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org https://bugs.dpdk.org/show_bug.cgi?id=3D933 Bug ID: 933 Summary: Issue with parsing devargs syntax on Hyper-V platforms with DPDK-21.11 Product: DPDK Version: 21.11 Hardware: x86 OS: Linux Status: UNCONFIRMED Severity: major Priority: Normal Component: other Assignee: dev@dpdk.org Reporter: madhuker.mythri@oracle.com Target Milestone: --- Hi, On Hyper-V(Azure) environment with/without Accelarated mode, we are seeing segmentation-fault issues while running secondary process of DPDK with lega= cy syntax of arguments on DPDK-21.11 version. Whereas the same arguments were working well till DPDK-21.08 version, only = with the latest DPDK-21.11 this issue occurs. Here is the EAL argument syntax for net_failsafe PMD: --vdev net_vdev_netvsc0,iface=3Ds1p0 --block 032e:00:02.0 As per analysis on this, found that new feature got introduced "Enabled new devargs parser" in DPDK-21.11 version. As part of this new feature found th= at this DPDK patch caused this issue: https://patchwork.dpdk.org/project/dpdk/patch/1618283653-16510-6-git-send-e= mail-xuemingl@nvidia.com/ When we remove this patch code, we do not see any issues with loading primary/secondary processes. So, looks like issue in identifying the new gl= obal syntax and fallback to legacy syntax w.r.t to Hyper-V platforms. Even we tried to give new syntax as mentioned in this patch to load this "v= dev" based bus as follows, but still seeing issues. -a bus=3Dvdev,name=3Dvdev_netvsc/class=3Deth/driver=3Dvdev_netvsc So, this is an issue with legacy syntax arguments with "--vdev" on DPDK-21.= 11. --=20 You are receiving this mail because: You are the assignee for the bug.=