From: bugzilla@dpdk.org
To: dev@dpdk.org
Subject: [DPDK/vhost/virtio Bug 1658] Vhost multi-queue reconnection failed with QEMU version 4.2.0 to 5.1.0
Date: Mon, 03 Feb 2025 04:36:57 +0000 [thread overview]
Message-ID: <bug-1658-3@http.bugs.dpdk.org/> (raw)
[-- Attachment #1: Type: text/plain, Size: 1258 bytes --]
https://bugs.dpdk.org/show_bug.cgi?id=1658
Bug ID: 1658
Summary: Vhost multi-queue reconnection failed with QEMU
version 4.2.0 to 5.1.0
Product: DPDK
Version: 18.11
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: Normal
Component: vhost/virtio
Assignee: dev@dpdk.org
Reporter: nandinipersad361@gmail.com
Target Milestone: ---
It’s a QEMU regression bug (bad commit: c6beefd674ff). QEMU only saves acked
features for one vhost-net when vhost quits. When vhost reconnects to
virtio-net/virtio-pmd in multi-queue situations, the features been set multiple
times are not consistent. QEMU-5.2.0 fixes this issue in commit f66337bdbfda
(“vhost-user: save features of multiqueues if chardev is closed”).
Implication
Vhost cannot reconnect back to virtio-net/virtio-pmd normally.
Resolution/Workaround:
It is possible to filter the incorrect acked features at vhost-user side.
Affected Environment/Platform:
ALL.
Driver/Module:
Virtual Device Poll Mode Driver (PMD).
--
You are receiving this mail because:
You are the assignee for the bug.
[-- Attachment #2: Type: text/html, Size: 3135 bytes --]
reply other threads:[~2025-02-03 4:36 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=bug-1658-3@http.bugs.dpdk.org/ \
--to=bugzilla@dpdk.org \
--cc=dev@dpdk.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).