Re: [Xen-devel] XenVGAPassthroughTestedAdapters up to date?

[Jean Guyader <jean.guyader@xxxxxxxxx>]

On 7 October 2010 12:03, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
> On Thu, Oct 07, 2010 at 11:52:09AM +0100, Jean Guyader wrote:
>> On 7 October 2010 11:49, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
>> > On Thu, Oct 07, 2010 at 11:26:15AM +0100, Jean Guyader wrote:
>> >> On 7 October 2010 08:57, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
>> >> > On Thu, Oct 07, 2010 at 01:06:31AM -0400, Eric Stein wrote:
>> >> >> Hi,
>> >> >>
>> >> >> I've been looking to virtualize a Win7 guest and a Gentoo Linux guest
>> >> >> side by side, each having access to one video card.  However, most of
>> >> >> the consumer cards I've looked at are either somewhat out of date
>> >> >> (Nvidia 8800 GTS) or not listed on the wiki page for VGA passthrough:
>> >> >>
>> >> >> http://wiki.xensource.com/xenwiki/XenVGAPassthroughTestedAdapters
>> >> >>
>> >> >> Based on my reading of the pages around VTd and IOMMU, I should be able
>> >> >> to use the patches to accomplish my goal if I choose a card that works
>> >> >> with Xen (or use one of the workarounds, for instance vBAR=pBAR).
>> >> >>
>> >> >> I'm inclined to think this page is out of date as I've heard mention
>> >> >> that various Intel IGD onboard cards have support... is there a
>> >> >> different resource I should be looking to to determine which cards I
>> >> >> should consider buying?
>> >> >>
>> >> >
>> >> > Yep, that wiki page is unfortunately very out-of-date.
>> >> > If you know a list of tested adapters I can add them to the wiki.
>> >> >
>> >>
>> >> ATI HD4550, ATI HD5750 work fine with the latest catalyst driver (10-9).
>> >>
>> >
>> > Could you please tell more about the hardware, and also software versions 
>> > used.
>> > See the wiki page for details.
>> >
>>
>> I tried on win7 32b, haven't tried XP. The hardware was an Ibex Peak Ibex.
>> The xen version was xen 3.4-testing.
>>
>
> What patches did you apply? VGA passthru was first introduced in Xen 4.0,
> it wasn't in Xen 3.4. Or has it been added recently?
>
> Also, what dom0 kernel did you use?
> What grub settings (for device hiding etc)?
>

I use normal device pass throught, I forgot to mentioned that was
passing it through as a secondary display adapter so no need to do any
fancy VGA tweak for that.

I used SLE 2.6.32 xen as dom0 + XCI patch queue.
I used pci back directly to hide the device from dom0 after boot (echo
the gpu BDF into sysfs).

Jean

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