From: bugzilla-daemon@bugzilla.kernel.org
To: kvm@vger.kernel.org
Subject: [Bug 212859] New: Nested virtualization does not work well
Date: Tue, 27 Apr 2021 16:57:18 +0000 [thread overview]
Message-ID: <bug-212859-28872@https.bugzilla.kernel.org/> (raw)
https://bugzilla.kernel.org/show_bug.cgi?id=212859
Bug ID: 212859
Summary: Nested virtualization does not work well
Product: Virtualization
Version: unspecified
Kernel Version: 4.19.188-amd64-cust1
Hardware: All
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: kvm
Assignee: virtualization_kvm@kernel-bugs.osdl.org
Reporter: ne-vlezay80@yandex.ru
Regression: No
Qemu version: 2.8.1
System: Devuan Ascii
Problem:
If you try to use nested virtualization and run linux or openbsd on it, then
the system inside the nested virtual machine periodically freezes. If you watch
strace, there are a lot of timeouts during the hangup. But, if you use a kernel
from 5.10+ and qemu 5.20 on the host, then everything is fine. Nested
virtualization works fine. Also run kernel 4.19.* on qemu, problem is not
appers.
Demonstration:
https://youtu.be/mrMPukeTntQ
--
You may reply to this email to add a comment.
You are receiving this mail because:
You are watching the assignee of the bug.
next reply other threads:[~2021-04-27 16:57 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-27 16:57 bugzilla-daemon [this message]
2021-04-27 16:58 ` [Bug 212859] Nested virtualization does not work well bugzilla-daemon
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-212859-28872@https.bugzilla.kernel.org/ \
--to=bugzilla-daemon@bugzilla.kernel.org \
--cc=kvm@vger.kernel.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).