From: bugzilla-daemon@bugzilla.kernel.org
To: kvm@vger.kernel.org
Subject: [Bug 47451] need to re-load driver in guest to make a hot-plug VF work
Date: Fri, 28 Sep 2012 06:07:50 +0000 (UTC) [thread overview]
Message-ID: <20120928060750.E9B6C11FC39@bugzilla.kernel.org> (raw)
In-Reply-To: <bug-47451-28872@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=47451
--- Comment #4 from Jay Ren <yongjie.ren@intel.com> 2012-09-28 06:07:50 ---
(In reply to comment #3)
> (In reply to comment #2)
> > (In reply to comment #1)
> > >Can we narrow down the kvm.git commit range at all? The
> > > one provided is over 12k commits covering v3.4-rc3 to v3.5-rc6. Thanks
> > I did more testing.
> > Do you remember the bug #43328 ( VT-d/SR-IOV totally doesn't work in guest)?
> > Just use your fix commit for that bug, I'll meet this hot-plug issue.
> > Is there a chance your patch fixed one bug but introduced another one? :)
> >
> > commit a76beb14123a69ca080f5a5425e28b786d62318d
> > Author: Alex Williamson <alex.williamson@redhat.com>
> > Date: Mon Jul 9 10:53:22 2012 -0600
> >
> > KVM: Fix device assignment threaded irq handler
>
> Thanks for the narrowing it down. It looks like perhaps that patch was
> ineffective at trying to keep us out of using IRQF_ONESHOT due to
> irq_setup_forced_threading() re-enabling it. Does the problem go away if you
> change the two calls to request_threaded_irq() in that commit to use
> IRQF_NO_THREAD for the flag value in place of 0?
No, replacing flag value with 'IRQF_NO_THREAD' can't make PCIe NIC hot-plug
work.
Can you try with your commit "a76beb14123a6" ?
BTW, sometimes, this bug is not so stable. Using '-m 512 -smp 2' option for
qemu-kvm commandline to start a RHEL6.x guest will make it very easy to
reproduce.
--
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.
next prev parent reply other threads:[~2012-09-28 6:07 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-13 9:21 [Bug 47451] New: need to re-load driver in guest to make a hot-plug VF work bugzilla-daemon
2012-09-14 16:24 ` [Bug 47451] " bugzilla-daemon
2012-09-20 3:36 ` bugzilla-daemon
2012-09-20 4:36 ` bugzilla-daemon
2012-09-28 6:07 ` bugzilla-daemon [this message]
2012-12-10 3:00 ` bugzilla-daemon
2012-12-10 3:00 ` 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=20120928060750.E9B6C11FC39@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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.