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Re: [Xen-users] PCI Passthrough



Using the xm toolstack because xl is completely broken in fedora17.


xen version 4.1.3-4.fc17


On Sat, Sep 29, 2012 at 1:13 PM, Casey DeLorme <cdelorme@xxxxxxxxx> wrote:
> The settings for stdvga is related to the emulated graphics only, I don't
> believe it has anything to do with your passed devices.  Similarly, you can
> (or should be able to) omit the vga_passthrough=0 line, as it defaults to 0.
>
> Assuming you are passing to a Windows DomU (hence code 43), have you checked
> your xen log files (/var/logs/xen), also I would try running xl -vvv create
> with and without both adapters to see if that maybe yields a clue.
>
> Also, what version of Xen did you install, and which toolstack are you using
> (xm/xl)?
>
> On Sat, Sep 29, 2012 at 1:01 PM, David Escott
> <david.escott@xxxxxxxxxxxxxxxx> wrote:
>>
>> Went back to what was working last night and now have the 7850 working
>> but only when I pass both graphics adapters through to the domU.
>>
>> Hardware is
>>
>> MSI Z77A-G45
>> HD2600XT in PCI-Ex16 slot 1 (pci:0000:01:00:[0-1])
>> HD7850     in PCI-Ex16 slot 2 (pci:0000:02:00:[0-1])
>>
>> Dom0 is Fedora 17 with kernel 3.5.4-1 and the fedora version of xen.
>> vga_passthrough=0 is set
>> stdvga=1 is set
>> I stub out and pass both graphics adapters to domU, and then disable
>> the 2600XT at which point the 7850 works, and the fake VGA Graphics
>> adapter reports a code 43.
>>
>> If I don't pass both cards to domU then both they will report code 43.
>>
>> Not sure why this is, or what is going on. Looked around in the bios
>> for anything related to crossfire but couldn't find anything.
>>
>>
>> ----------------------------------------------------------------------------------------------------
>>
>> This puts a dent in my current plan which was to use the system to
>> support three different computers in three different rooms. Not sure
>> if anyone has seen anything like this/knows what might be going on.
>>
>>
>>
>>
>> On Sat, Sep 29, 2012 at 11:20 AM, Casey DeLorme <cdelorme@xxxxxxxxx>
>> wrote:
>> > Hello David,
>> >
>> > I have created a guide using Debian that can successfully reproduce VGA
>> > Passthrough with AMD Radeon cards, in particular I have used an AMD
>> > Radeon
>> > 6870.
>> >
>> > If you are more familiar with Fedora, I'm sure you can translate any
>> > Debain
>> > specific actions to Fedora equivalents.
>> >
>> > http://wiki.xen.org/wiki/Comprehensive_Xen_Debian_Wheezy_PCI_Passthrough_Tutorial
>> >
>> > I also posted a video walk-through:
>> > http://www.youtube.com/playlist?list=PLC70DC33D993CEB44&feature=view_all
>> >
>> > As for your current configuration, what version of Xen (4.0, 4.1.2,
>> > 4.2?),
>> > can you share your HVM Configuration, and are you getting any errors in
>> > your
>> > Xen log files or just inside of Windows?
>> >
>> >
>> > On Sat, Sep 29, 2012 at 11:10 AM, David Escott
>> > <david.escott@xxxxxxxxxxxxxxxx> wrote:
>> >>
>> >> I've been playing around with doing PCI passthrough of Radeon cards
>> >> and have had some success.
>> >>
>> >> Under Fedora 17 (stock everything) I was able to passthrough an older
>> >> RADEON 2600XT to a Windows7 domU.
>> >> However when I try the same with a new RADEON 7850 I get a "not enough
>> >> resources" error from the Windows guest.
>> >>
>> >> I'm not sure what the next steps are, it seems from blog postings and
>> >> howtos that people are just trying things at random, and I don't
>> >> understand what the debugging process is.
>> >>
>> >> Any advice on what the next steps are? Should I move to an OS that
>> >> will have a newer XEN or is there some configuration file I should be
>> >> editing?
>> >>
>> >> Thanks,
>> >> David
>> >>
>> >> _______________________________________________
>> >> Xen-users mailing list
>> >> Xen-users@xxxxxxxxxxxxx
>> >> http://lists.xen.org/xen-users
>> >
>> >
>>
>>
>>
>> --
>> David Wright Escott
>> A comathematician turns cotheorems into phi.
>
>



-- 
David Wright Escott
A comathematician turns cotheorems into phi.

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