Re: [Xen-users] PCI Passthrough, Radeon 7950 and Windows 7 64-bit

[Chris <kavefish@xxxxxxxxx>]

The configuration file below resolved my problems. I'm passing through
gfx device to Win7 domU (as a secondary device). Interestingly I can
reboot the domU without any gfx issues.

I'm also now running a custom kernel with pciback built-in, but I don't
think that's the solution. I'll do more troubleshooting soon to identify
the culprit and share for posterity.

Thanks all for the useful discussion and sustained interest
-Chris


On 6/25/12 3:51 PM, jocelyn falempe wrote:
> Hi,
> 
> I've got a similar setup :
> 
> core i7-3770 + ASRock z77 pro 4M
> and a sapphire radeon HD7950
> 
> Ubuntu 12.04 as Dom0, and Win8 release preview as HVM guest.
> 
> I can start my VM multiple time without issue.
> as I have 3 USB controller and 2 SATA controller, I use pci passthrough
> to pass USB and SATA devices too
> so my razer mouse, and secondary sata drive is "native" on windows too.
> 
> here is my script (copied from someone) to reserve the PCI devices for
> my HVM :
> 
> remove_device () {
> BDF=$1
> # Unbind a PCI function from its driver as necessary
> [ ! -e /sys/bus/pci/devices/$BDF/driver/unbind ] || \
>         echo -n $BDF > /sys/bus/pci/devices/$BDF/driver/unbind
> # Add a new slot to the PCI Backend's list
> echo -n $BDF > /sys/bus/pci/drivers/pciback/new_slot
> # Now that the backend is watching for the slot, bind to it
> echo -n $BDF > /sys/bus/pci/drivers/pciback/bind
> }
> 
> #USB Controller :
> remove_device "0000:00:1a.0"
> #SATA Controller :
> remove_device "0000:04:00.0"
> #Radeon 7950
> remove_device "0000:01:00.0"
> #Radeon 7950 audio
> remove_device "0000:01:00.1"
> 
> and here is my .cfg file to launch the VM (xm create win8_lan.cfg) :
> cat win8_lan.cfg
> kernel="/usr/lib/xen-default/boot/hvmloader"
> builder='hvm'
> memory = 8096
> vcpus=6
> name = "win8_new"
> vif = [ 'type=ioemu, bridge=br0' ]
> disk = ['file:/xen-images/win8_2.img,ioemu:hda,w']
> acpi = 1
> boot="c"
> sdl=0
> serial='pty'
> vnc=1
> pci=[ '00:1a.0', '01:00.0', '01:00.1', '04:00.0' ]
> 
> hope it helps
> 
> Regards,
> 
> Jocelyn
> 
> 
> On 06/25/2012 05:32 PM, Radoslaw Szkodzinski wrote:
>> On Mon, Jun 25, 2012 at 5:21 PM, Matthias
>> <matthias.kannenberg@xxxxxxxxxxxxxx> wrote:
>>> Maybe you should give xm a try just to see if it does the trick. I
>>> never got vga passthrough working with xl (and from my understanding,
>>> it's a lot mor complicated there with compiling the vga bios into xen
>>> and manual calculating vga adress ranges.. with xm, I'm doing neither
>>> of it).
>> Why? I'm not using the VGA Passthrough, The card is set up as a
>> secondary.
>> That shouldn't need any VGA BIOS. Also, it works fine for the first
>> boot very well!
>>
>> The problem occurs on the second start of the same VM.
>>
>>> Also, do you increase the log level for xen? my kernel line is:
>>> multiboot /boot/xen.gz dom0_mem=2048M iommu=1 loglvl=all
>>> guest_loglvl=all
>> Will do. (except dom0_mem)
>>
>>> What kernel are you using? If you want i can provide my build commands
>>> for the xen-patched openSuse Kernel..
>> I don't want to use the XenLinux kernel. PVOps only please.
>> Unless the Xen kernel is actually Pvops-based, in which case why would
>> I want to use OpenSUSE one instead of vanilla?
>>
>> As I've mentioned, vanilla 3.4.1.
>>
> 
> 
> 
> _______________________________________________
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> Xen-users@xxxxxxxxxxxxx
> http://lists.xen.org/xen-users


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