[SATLUG] kvm pci passthrough

Mark Mayfield mayfield_mark at gvtc.com
Sat Feb 2 11:13:57 CST 2013


The list did not like me attaching a screenshot. This link will take you 
to a screenshot if you want to see it.

http://mmayfield.dyndns.org:2000/mmayfield/img/Screenshot.png

On 01/31/2013 05:34 PM, Todd W. Bucy wrote:
> wow I've been searching for that Holy Grail for about 3 years now.  any
> chance on you posting a tutorial?
> On Jan 29, 2013 2:59 PM, "Mark Mayfield" <mayfield_mark at gvtc.com> wrote:
>
>> Something happened with my email and I had had to transfer my satlug
>> account to a different address.
>>
>>
>> Anyway I had a very productive experience with kvm recently. I was using
>> xen for a while but I stumbled onto spice and have been loving it. Libvirt,
>> spice and pulseaudio work well together without a fight, unlike vnc. The
>> video driver for spice, qxl is way better than cirrus and the other video
>> drivers. The spice vdagent provides copy and paste ability between the host
>> and guest. These improvements make it much more usable for day to day
>> desktop virtualization.
>>
>> Having finally gotten the video card I've been needing to complete my
>> gaming virtual machine project that's been in the works for about a year, I
>> decided to give kvm a shot instead of xen. After stumbling upon an option I
>> had to pass to the kvm module I successfully passed a Radeon HD 6850 to a
>> Windows 8 virtual machine. After getting the video card installed, running
>> the windows experience tool and installing game I was a little
>> disappointed. I did achieve a 5.9 rating but the game movement was less
>> than ideal. After some tinkering I figured out that the virtual keyboard
>> and mouse couldn't keep up with the game. I managed to pass through a usb
>> controller and use a dedicated keyboard and mouse for the virtual.
>>
>> The virtual machine runs Halo, Assassins Creed 2, Crysis and Skyrim
>> (medium settings). The only real glitch is that I have to reboot the host
>> to reboot the guest. If I try to reboot the guest without rebooting the
>> host the guest crashes.
>>
>> I will post a screenshot of the virtual machine later.
>>
>> FYI for performance I'm using a raw disk image with no cache, virtio
>> storage and network drivers, hugepages and elevator=noop.
>> --
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