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 120344617B; Mon, 3 Feb 2025 05:35:40 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id E578C40287; Mon, 3 Feb 2025 05:35:39 +0100 (CET) Received: from inbox.dpdk.org (inbox.dpdk.org [95.142.172.178]) by mails.dpdk.org (Postfix) with ESMTP id 2B7AF40264 for ; Mon, 3 Feb 2025 05:35:38 +0100 (CET) Received: by inbox.dpdk.org (Postfix, from userid 33) id 1F9294617C; Mon, 3 Feb 2025 05:35:38 +0100 (CET) From: bugzilla@dpdk.org To: dev@dpdk.org Subject: [DPDK/core Bug 1657] Unsuitable IOVA mode may be picked as the default Date: Mon, 03 Feb 2025 04:35:38 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: DPDK X-Bugzilla-Component: core X-Bugzilla-Version: 18.11 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: nandinipersad361@gmail.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: multipart/alternative; boundary=17385573370.Bf7bb61.2171393 Content-Transfer-Encoding: 7bit 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 --17385573370.Bf7bb61.2171393 Date: Mon, 3 Feb 2025 05:35:37 +0100 MIME-Version: 1.0 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 https://bugs.dpdk.org/show_bug.cgi?id=3D1657 Bug ID: 1657 Summary: Unsuitable IOVA mode may be picked as the default Product: DPDK Version: 18.11 Hardware: All OS: Linux Status: UNCONFIRMED Severity: normal Priority: Normal Component: core Assignee: dev@dpdk.org Reporter: nandinipersad361@gmail.com Target Milestone: --- Not all kernel drivers and not all devices support all IOVA modes. EAL will attempt to pick a reasonable default based on a number of factors, but there may be cases where the default may be unsuitable (for example, hotplugging devices using igb_uio driver while having picked IOVA as VA mode on EAL initialization). Implication Some devices (hotplugged or otherwise) may not work due to incompatible IOVA mode being automatically picked by EAL. Resolution/Workaround: It is possible to force EAL to pick a particular IOVA mode by using the =E2=80=93iova-mode command-line parameter. If conflicting requirements are = present (such as one device requiring IOVA as PA and one requiring IOVA as VA mode), there is no workaround. Affected Environment/Platform: Linux. Driver/Module: ALL. --=20 You are receiving this mail because: You are the assignee for the bug.= --17385573370.Bf7bb61.2171393 Date: Mon, 3 Feb 2025 05:35:37 +0100 MIME-Version: 1.0 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All

Bug ID	1657
Summary	Unsuitable IOVA mode may be picked as the default
Product	DPDK
Version	18.11
Hardware	All
OS	Linux
Status	UNCONFIRMED
Severity	normal
Priority	Normal
Component	core
Assignee	dev@dpdk.org
Reporter	nandinipersad361@gmail.com
Target Milestone	---

Not all kernel drivers and not all=
 devices support all IOVA modes. EAL will
attempt to pick a reasonable default based on a number of factors, but there
may be cases where the default may be unsuitable (for example, hotplugging
devices using igb_uio driver while having picked IOVA as VA mode on EAL
initialization).

Implication
Some devices (hotplugged or otherwise) may not work due to incompatible IOVA
mode being automatically picked by EAL.

Resolution/Workaround:
It is possible to force EAL to pick a particular IOVA mode by using the
=E2=80=93iova-mode command-line parameter. If conflicting requirements are =
present
(such as one device requiring IOVA as PA and one requiring IOVA as VA mode),
there is no workaround.

Affected Environment/Platform:
Linux.

Driver/Module:
ALL.

You are receiving this mail because:

You are the assignee for the bug.

=20=20=20=20=20=20=20=20=20=20

= --17385573370.Bf7bb61.2171393--