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[vfio-users] nVidia Code 43

Hey guys,

I have spent the last 2 days experimenting trying to get my GTX690 passed through to a Windows 10 guest and since succeeding have been getting nothing but Code 43 errors.

In Windows 10 I am currently using the latest nVidia driver (359.06).

My libvirt xml is here http://pastebin.com/KY9QWhcu note that there is a device commented out from passthrough, that is a PCI express SSD which I will be trying to make work but for the time being I am focusing on getting getting the GTX 690 to function (remember it is a dual GPU card which is why there is so much forwarded). 

I am running Arch Linux with the linux-vfio-lts kernel from AUR as I discovered the hard way that there is currently a bug in the normal kernels that causes passthrough to hang the VM while it is loading Windows and cause the host machine to stutter. The exact kernel version is: 4.1.13-1-vfio-lts #1 SMP PREEMPT Thu Dec 10 13:21:54 GMT 2015 x86_64 GNU/Linux.

My libvirt version is: 1.3.0-1.
My Tianocore uefi is from this RPM: edk2.git-ovmf-x64-0-20151209.b1361.gfaec499.noarch.rpm

Have nVidia stepped up their efforts to block us from using vga passthrough or is there something I have missed in my XML that could be indicating to the driver that it is running in a VM which then causes it to Code 43 me?

Thanks for any help in advance,

Alan Jenkins

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