This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


Re: [Xen-devel] xci pci passthru video card flr etc

To: "Han, Weidong" <weidong.han@xxxxxxxxx>
Subject: Re: [Xen-devel] xci pci passthru video card flr etc
From: Andrew Lyon <andrew.lyon@xxxxxxxxx>
Date: Wed, 19 Aug 2009 20:04:22 +0100
Cc: Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
Delivery-date: Wed, 19 Aug 2009 12:04:48 -0700
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:cc:content-type :content-transfer-encoding; bh=REoNtiyVCsuoV55gRrkzLroU4Qlyqhnb2D2OsJ3dwn0=; b=Yl8o56mmAaCDCnK55QaooJ1j3qpGn/jFM+6CE4/o5dKTfYdQ3FMN3dPrzGGnzQ3bD+ j4gJjLfO1GnVBGq/LH+bm0//e+lJlbtGljfGEMXBbhf3KTzWySDk/DajajHypPyRw9ym iBkGK4lB99Lbrt0QUbTiyO2cOjlyhLSt1gIlA=
Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=CFfFQ+m9NiTRvQvLPRZZSD5QfM0Rvegr9ztN5V81/SRyNF0Vw1v4PvVCBGyufgRCRS G8mAH0jXlwkWzy9mp1rFbjrun1v3OuwBvPHxWScuAayUCW+P7nnEDj4w/KlTU830zFGS FHABFoyYJF7H1ElHXfbEbEDtzwX0it9Cb0K5o=
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <715D42877B251141A38726ABF5CABF2C05484914D3@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
References: <f4527be0907201218y2c4af93eh8d79f66b63d353b3@xxxxxxxxxxxxxx> <715D42877B251141A38726ABF5CABF2C05484914D3@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
On Tue, Aug 18, 2009 at 9:13 AM, Han, Weidong<weidong.han@xxxxxxxxx> wrote:
> Andrew Lyon wrote:
>> Hi,
>> I want to try using pci passthru to give a windows 7 hvm access to a
>> dedicated video card, I've read all of the threads I can find about
>> video passthru but I still have some questions:
>> I use rebased opensuse Xen patches to make the dom0 kernel, currently
>> running 2.6.29 as there are networking problems with gplpv and 2.6.30,
>> I believe it is necessary to use Function Level Reset to reset the
>> graphics card before the hvm domU boots, otherwise it will be
>> incorrectly initialized by the bios or dom0 ? and therefore will not
>> function correctly, I plan to rebase the following patches to
>> 2.6.29/30 to enable FLR:
>> http://xenbits.xen.org/gitweb?p=xenclient/linux-2.6.27-pq.git;a=commit;h=50c08c0d3e499c5576e906ab5f0c9c234fba2493
>> http://xenbits.xen.org/gitweb?p=xenclient/linux-2.6.27-pq.git;a=commit;h=b631b9005cd72b0e2e859dd1fab557a3015c8b58
>> http://xenbits.xen.org/gitweb?p=xenclient/linux-2.6.27-pq.git;a=commit;h=36083d0755a740ed509ca9812db9576473bc4e8b
>> Are all 3 patches required? are any other patches required? what about
>> patches to Xen?
>> The http://xenbits.xen.org/gitweb?p=xenclient/linux-2.6.27-pq.git
>> patchqueue includes pull's from other trees, is there anything in them
>> that I need for FLR or other necessary new features?
>> I am currently running Xen 3.4 but plan to upgrade to the latest
>> 3.4.1-rc before I try video passthru, I've already patched 3.4 to fix
>> the problem with viridian and windows 7, I assume that fix will be
>> included in 3.4.1 as it is in testing
>> (http://lists.xensource.com/archives/html/xen-changelog/2009-06/msg00119.html)
>> My system currently has a 512mb 8600GT which I use with the nvidia
>> binary drivers driving a pair of 1920x1200 tft's, I think I can get
>> access to another identical 8600GT so I plan to drive one monitor with
>> each card, has anybody had success with passthru using nvidia cards?
> We observed that it needs vBAR = pBAR (1:1 map memories of video card in 
> guest and host) for some Nvidia cards, such as Geforce 8400 GS. But some 
> high-end Nvidia cards (e.g Quadro FX 3800) don't require that, they are more 
> virtualization friendly.
> Regards,
> Weidong

I thought the purpose of the vt-d iommu was to map the virtual
addresses to physical for just this reason?

I don't think I can run to £700 needed for a quadro just so that I can
run windows 7 aero on my 3rd monitor :-), has anybody else had success
with consumer nvidia cards?

I will get a ati card if necessary but I prefer to give my ££'s to
nvidia as they have historically provided better linux support.


Xen-devel mailing list

<Prev in Thread] Current Thread [Next in Thread>