On Fri, 11 Dec 2015 08:08:41 +0000 Alan Jenkins <alan.james.jenk...@gmail.com> wrote:
> 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? > Hi Alan, Besides switching to a 440FX machine type, try also commenting out the following: <hyperv> <relaxed state='off'/> <vapic state='off'/> <spinlocks state='off'/> </hyperv> My Windows 10 VM (working XML config attached) works fine without it and I regularly update the driver via NVIDIA Experience. For the latter to work, add to /etc/modprobe.d/kvm.conf the following (create the file if it doesn't exist): options kvm ignore_msrs=1 While not strictly needed for the NVIDIA driver to work, it makes some programs that probe for various CPU features, including NVIDIA Experience, happy. Regards, Hristo > Thanks for any help in advance, > > Alan Jenkins
win10.xml
Description: XML document
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