From: "Xu, Quan" <quan.xu@intel.com>
To: Jan Beulich <JBeulich@suse.com>, Wei Liu <wei.liu2@citrix.com>
Cc: Xen-devel <xen-devel@lists.xenproject.org>,
"Hao, Xudong" <xudong.hao@intel.com>,
"Zhang, PengtaoX" <pengtaox.zhang@intel.com>
Subject: Re: [BUG] win2008 guest cannot get ip through sriov
Date: Thu, 2 Jun 2016 13:05:04 +0000 [thread overview]
Message-ID: <945CA011AD5F084CBEA3E851C0AB28894B8C4E94@SHSMSX101.ccr.corp.intel.com> (raw)
In-Reply-To: <57503DE102000078000F0F13@prv-mh.provo.novell.com>
On June 02, 2016 8:09 PM, Jan Beulich <JBeulich@suse.com> wrote:
> >>> On 02.06.16 at 13:03, <wei.liu2@citrix.com> wrote:
> > On Thu, Jun 02, 2016 at 04:38:47AM -0600, Jan Beulich wrote:
> >> >>> On 02.06.16 at 12:22, <wei.liu2@citrix.com> wrote:
> >> > On Thu, Jun 02, 2016 at 07:31:06AM +0000, Xu, Quan wrote:
> >> >> On May 27, 2016 10:06 PM, Jan Beulich <JBeulich@suse.com> wrote:
> >> >> > >>> On 27.05.16 at 15:34, <wei.liu2@citrix.com> wrote:
> >> >> > > On Fri, May 27, 2016 at 06:16:30AM -0600, Jan Beulich wrote:
> >> >> > >> >>> On 27.05.16 at 12:39, <wei.liu2@citrix.com> wrote:
> >> >> > >> > Is this a regression? Does it work on previous versions of Xen?
> >> >> > >>
> >> >> > >> I think this is what was already reported by other Intel
> >> >> > >> people, see e.g. Quan's most recent reply:
> >> >> > >> http://lists.xenproject.org/archives/html/xen-devel/2016-
> 05/msg01896.
> >> >> > >> html It is not clear where the problem is, and not seeing the
> >> >> > >> issue myself makes it hard to analyze. In any event this
> >> >> > >> quite likely is a regression.
> >> >> > >>
> >> >> > >
> >> >> > > My reading of that email thread and all relevant links
> >> >> > > (including the KVM bug report) is that there is a regression vf driver,
> but not in Xen.
> >> >> >
> >> >> > Just from reading that I would tend to agree. But the report
> >> >> > here is about Win2K8.
> >> >>
> >> >> Do you know which commit is a regression one? I try to find out
> >> >> the
> >> > regression commit. That may be helpful to find out the root cause.
> >> >>
> >> >> Btw, some feedback from QA team, rhel 6.4 VM doesn't work, but
> >> >> rhel 7.2 VM
> > does.
> >> >
> >> > Isn't this at least an indication that the guest could be buggy here?
> >> > It could also be both the hypervsior and guest have bugs. But we're
> >> > just not sure at this point.
> >>
> >> Indeed, and (with the many fixes that went in already) I really
> >> suspect a combination of both, or some of the involved hypervisor
> >> changes having unmasked some guest issue. Regardless, I'm afraid this
> >> ought to be treated as a blocker for the release at least until we
> >> understand what the issue is. But otoh making it a blocker probably
> >> makes sense only if we can expect progress (which we haven't really
> >> made for quite long a time).
> >>
> >
> > This issue is on my list, but the information gathered so far isn't
> > convincing enough to make it a blocker.
> >
> > And yes, we need meaningful progress to make it a blocker. To make it
> > so, commitment from various parties is needed. Let's start with
> > setting out things to look at, who is going to investigate what, and a
> > possible timeline for each item.
> >
> > Jan, can you come up with a list of what sort of information you need?
>
> Well, I had hoped to avoid that. But now that you ask for it, providing an initial
> debugging patch seems better than a description which may get
> misunderstood. Attached both a hypervisor and a qemu patch. Their plus
> debug key M and i output is what I'd like to start with.
>
I will try these 2 patches.
btw. I read the internal Bugzilla carefully. I found that vf is working for win2k8 at '2014-12-01 14:32:09 EST', but the bug still exist on ' 2015-02-11 15:54:05 EST '.
then, I grepped the commit logs, the below 4 MSI-X related commits are may the root cause.
From 6fb3a07bc0ad656b5f76eb9fc961bcd1d3cace58 Mon Sep 17 00:00:00 2001
From: Jan Beulich <JBeulich@suse.com>
Date: Fri, 12 Dec 2014 10:24:13 +0000
Subject: [PATCH 13/44] domctl: fix IRQ permission granting/revocation
From 1965728cd5a1635859158f5800d844fc16774668 Mon Sep 17 00:00:00 2001
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Date: Mon, 12 Jan 2015 11:29:33 -0500
Subject: [PATCH 42/44] Revert "dpci: add 'masked' as a gate for
hvm_dirq_assist to process"
From 72f3c1e26e96686a41d2de1663e578538659f99a Mon Sep 17 00:00:00 2001
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Date: Mon, 12 Jan 2015 11:30:00 -0500
Subject: [PATCH 43/44] Revert "dpci: replace tasklet with softirq"
rom a8ac2290ed95dbbc0dc1bdde86fc3a49fe784b28 Mon Sep 17 00:00:00 2001
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Date: Mon, 12 Jan 2015 11:30:05 -0500
Subject: [PATCH 44/44] Revert "dpci: move from an hvm_irq_dpci (and struct
domain) to an hvm_dirq_dpci model"
Quan
> Jan
>
> > And then maybe Quan and Pengtao can give an estimation on how long it
> > takes to gather all necessary information and move on to next stage.
> >
> > Wei.
> >
> >> Jan
> >>
>
>
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
next prev parent reply other threads:[~2016-06-02 13:07 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-27 9:04 [BUG] win2008 guest cannot get ip through sriov Zhang, PengtaoX
2016-05-27 10:39 ` Wei Liu
2016-05-27 12:16 ` Jan Beulich
2016-05-27 13:34 ` Wei Liu
2016-05-27 14:06 ` Jan Beulich
2016-06-02 7:31 ` Xu, Quan
2016-06-02 9:03 ` Jan Beulich
2016-06-02 10:22 ` Wei Liu
2016-06-02 10:38 ` Jan Beulich
2016-06-02 11:03 ` Wei Liu
2016-06-02 12:08 ` Jan Beulich
2016-06-02 13:05 ` Xu, Quan [this message]
2016-06-02 13:30 ` Jan Beulich
2016-06-02 14:02 ` Xu, Quan
2016-06-07 5:52 ` Xu, Quan
2016-06-07 6:07 ` Xu, Quan
2016-06-07 7:43 ` Jan Beulich
2016-06-07 7:49 ` Jan Beulich
2016-06-07 8:03 ` Xu, Quan
2016-06-07 8:08 ` Jan Beulich
2016-06-07 8:19 ` Xu, Quan
2016-06-08 9:12 ` Xu, Quan
2016-06-08 9:25 ` Jan Beulich
2017-10-27 7:27 ` Hao, Xudong
2017-10-27 8:37 ` Jan Beulich
2017-10-27 8:58 ` Hao, Xudong
2017-10-27 10:41 ` Julien Grall
2017-10-27 20:16 ` Stefano Stabellini
2017-11-02 13:49 ` Julien Grall
2017-11-03 1:10 ` Hao, Xudong
2017-11-03 11:23 ` Roger Pau Monné
2017-11-06 1:04 ` Hao, Xudong
2017-11-07 9:33 ` Roger Pau Monné
2017-11-09 0:22 ` Hao, Xudong
2017-11-09 9:27 ` Roger Pau Monné
2017-11-09 14:36 ` Julien Grall
2017-11-09 14:37 ` Julien Grall
2017-11-27 3:20 ` Hao, Xudong
2017-11-27 10:39 ` Julien Grall
2017-11-06 1:07 ` Hao, Xudong
2017-11-08 12:13 ` Anthony PERARD
2017-11-08 12:17 ` Julien Grall
2017-10-30 1:04 ` Hao, Xudong
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=945CA011AD5F084CBEA3E851C0AB28894B8C4E94@SHSMSX101.ccr.corp.intel.com \
--to=quan.xu@intel.com \
--cc=JBeulich@suse.com \
--cc=pengtaox.zhang@intel.com \
--cc=wei.liu2@citrix.com \
--cc=xen-devel@lists.xenproject.org \
--cc=xudong.hao@intel.com \
/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).