Are you using VirtIO for the drives and nic? Emulating SATA is very inefficient in comparison.
You need to edit the vm xml for hiding from windows that you are in a VM. Check the following link and scroll down a bit, it’s what I did and it works like a charm.
Hello all! I am Gray from GrayWolfTech. I make videos on Linux and other interesting technology. Wendell has given me permission to post my written guides here for my videos. This is great for two reasons: First it helps grow this community and second my videos reach a wider audience to share what I have learned. I look forward to posting all my guides and videos here, and I am more than happy to answer any questions about the guide you may have.
– Onward! –
Now it’s time for one of the coolest and more advanced capabilities of Linux. KVM, or kernel virtual machines. We are going to go through step by step, how to setup PCI pass-through to a Windows virtual machine on a Debian host to play games!
Thanks to Redhat, KVM can run virtual machines with almost bare metal performance and supports a wide variety of other neat features. The one we are going to focus on in this video is of course, PCI pass-through. The process of allowing a virtual machine full access to a PCI express graphics card for gaming, CAD, or 3D rendering. With this neat capability, you can run Linux as your host OS, and then pass your GPU (or one of your GPUs if you have multiple) to a virtual machine to play games.
Let’s go over the requirements for this project:
First and most important, you should backup any data you have on your PC. If you know what you are doing then you will not lose anything, but accidentally selecting the wrong drive when installing can lead you to be very sad when you figure out the drive you wiped had all your really good porn on it.
Second, this process will take time. For someone who is an experienced Linux user it should take about 20 minutes (not counting time to install Debian or recompile the kernel). For someone who is new it might take longer. Make sure you allow yourself an entire afternoon or a good chunk of 4-5 hours where you could potentially not have a working PC.
Third, follow the instructions I lay out in the video. I will answer questions down belo…
run sudo virsh YOURVM and do the following (excerpt from the above link):
Delete the first line and replace it with<domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
Now go all the way to the botton right before the closing domain tag and add:<qemu:commandline> <qemu:arg value='-cpu'/> <qemu:arg value='host,hv_time,kvm=off,hv_vendor_id=null'/> </qemu:commandline>