Difficulties with VGA passthrough on gtx 760

Hello! I'm trying to VGA passthrough to work on my GTX 760 using this tutorial: https://www.pugetsystems.com/labs/ar...14-04-KVM-585/

However, whenever I try to run the virutal machine, I get this error...

qemu-system-x86_64: -device vfio-pci,host=07:00.0,bus=root.1,addr=00.0,multifunctio n=on,x-vga=on: vfio: error, group 6 is not viable, please ensure all devices within the iommu_group are bound to their vfio bus driver.
qemu-system-x86_64: -device vfio-pci,host=07:00.0,bus=root.1,addr=00.0,multifunctio n=on,x-vga=on: vfio: failed to get group 6
qemu-system-x86_64: -device vfio-pci,host=07:00.0,bus=root.1,addr=00.0,multifunctio n=on,x-vga=on: Device initialization failed.
qemu-system-x86_64: -device vfio-pci,host=07:00.0,bus=root.1,addr=00.0,multifunctio n=on,x-vga=on: Device 'vfio-pci' could not be initialized

Any idea what would cause this?

Edit: After some digging around I've found that this issue may be fixed by a patch found here: https://lkml.org/lkml/2013/5/30/513

Unfortunately, I have no idea how to apply it. Can someone help me with that, and/or let me know if this patch will fix my problem?