Re: [BUG] win2008 guest cannot get ip through sriov

From: "Roger Pau Monné" <roger.pau@citrix.com>
To: "Hao, Xudong" <xudong.hao@intel.com>
Cc: Lars Kurth <lars.kurth@citrix.com>,
	Stefano Stabellini <sstabellini@kernel.org>,
	"Kang, Luwei" <luwei.kang@intel.com>,
	"Zhang, PengtaoX" <pengtaox.zhang@intel.com>,
	Julien Grall <julien.grall@linaro.org>,
	Julien Grall <julien.grall@arm.com>, Quan Xu <quan.xu0@gmail.com>,
	Wei Liu <wei.liu2@citrix.com>, Jan Beulich <JBeulich@suse.com>,
	Anthony PERARD <anthony.perard@citrix.com>,
	Xen-devel <xen-devel@lists.xenproject.org>
Subject: Re: [BUG] win2008 guest cannot get ip through sriov
Date: Fri, 3 Nov 2017 11:23:25 +0000	[thread overview]
Message-ID: <20171103112325.wumui6v3ldfhcexc@dhcp-3-128.uk.xensource.com> (raw)
In-Reply-To: <B8376D2DEA074F45BA033984477C453E3B83D731@shsmsx102.ccr.corp.intel.com>

On Fri, Nov 03, 2017 at 01:10:26AM +0000, Hao, Xudong wrote:
> 
> > -----Original Message-----
> > From: Julien Grall [mailto:julien.grall@linaro.org]
> > Sent: Thursday, November 2, 2017 9:50 PM
> > To: Stefano Stabellini <sstabellini@kernel.org>
> > Cc: Hao, Xudong <xudong.hao@intel.com>; Jan Beulich <JBeulich@suse.com>;
> > Quan Xu <quan.xu0@gmail.com>; Lars Kurth <lars.kurth@citrix.com>; Wei Liu
> > <wei.liu2@citrix.com>; Zhang, PengtaoX <pengtaox.zhang@intel.com>; Kang,
> > Luwei <luwei.kang@intel.com>; Julien Grall <julien.grall@arm.com>; Anthony
> > PERARD <anthony.perard@citrix.com>; Xen-devel <xen-
> > devel@lists.xenproject.org>
> > Subject: Re: [Xen-devel] [BUG] win2008 guest cannot get ip through sriov
> > 
> > Hi,
> > 
> > On 27/10/17 21:16, Stefano Stabellini wrote:
> > > On Fri, 27 Oct 2017, Julien Grall wrote:
> > >> On 27/10/17 08:27, Hao, Xudong wrote:
> > >>> This bug exist much long time, there are many discussion last year
> > >>> but not a solution then. I call out it now because there is a fix in qemu
> > upstream:
> > >>> commit a8036336609d2e184fc3543a4c439c0ba7d7f3a2
> > >>> Author: Roger Pau Monne <roger.pau@citrix.com>
> > >>> Date:   Thu Aug 24 16:07:03 2017 +0100
> > >>>
> > >>>       xen/pt: allow QEMU to request MSI unmasking at bind time
> > >>>
> > >>> The fix is not in qemu-xen tree yet, when will qemu-xen sync this
> > >>> fix? Is it possible to catch Xen 4.10's qemu-xen?
> > >>
> > >> I will let Stefano and Anthony providing feedback before giving a
> > >> release-ack here.
> > >
> > > Yes, I think we should backport the commit as it fixes a genuine bug.
> > > The backport is not risk-free but it only affects PCI Passthrough.
> > > Also the commit has been in QEMU for 2 months now.
> > 
> > Does anyone actually tested it with QEMU Xen tree?
> > 
> 
> Qemu Xen tree is default which is in Xen source code configuration file Config.mk, I tested it with it.
> QEMU_UPSTREAM_URL ?= http://xenbits.xen.org/git-http/qemu-xen.git

Can you please make sure you have QEMU commit a80363: xen/pt: allow
QEMU to request MSI unmasking at bind time. AFAICT this is not yet in
the qemu-xen tree.

Roger.

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
https://lists.xen.org/xen-devel