[vfio-users] What to put in virt-manager so GeForce Experience will "Optimize" my CPU?

Will Marler will at wmarler.com
Tue Jan 26 04:09:10 UTC 2016


Found this on the Arch wiki, but setting the kvm option didn't change
anything:
https://wiki.archlinux.org/index.php/PCI_passthrough_via_OVMF#Make_Nvidia.27s_GeForce_Experience_work

And I'm not sure what the unintended consequences might be that the Wiki
warns about, so I'll be setting that back. Pretty sure I can optimize
manually.

And yea ... I did notice that shutting down the VM and powering it back on
was not the same as a reboot, according to the Windows 10 system. I had
changed the hostname, powered off, powered on ... Windows said "the name
will be changed when the computer reboots." O.o

On Mon, Jan 25, 2016 at 8:58 PM, Will Marler <will at wmarler.com> wrote:

> No soup. Windows is only seeing 2-cores: http://imgur.com/tnOXfnx;
> perhaps this is the problem, Windows sees 2, GeForce Exp expects/sees 4?
>
> On Mon, Jan 25, 2016 at 8:46 PM, Alex Williamson <
> alex.l.williamson at gmail.com> wrote:
>
>> On Mon, Jan 25, 2016 at 8:42 PM, Will Marler <will at wmarler.com> wrote:
>>
>>> Oh man, I got really excited for a second, but something's still
>>> missing. GeForce Experience now sees "Intel(R) Core(TM) i5-4690 CPU
>>> @3.50GHz" but it still says it can't optimize: http://imgur.com/quS5Isk
>>>
>>> On Mon, Jan 25, 2016 at 8:34 PM, Alex Williamson <
>>> alex.l.williamson at gmail.com> wrote:
>>>
>>>> On Mon, Jan 25, 2016 at 8:30 PM, Will Marler <will at wmarler.com> wrote:
>>>>
>>>>>
>>>>> I'm not sure this is a big deal, but idk, I guess I like to cross t's
>>>>> & dot i's.
>>>>>
>>>>> The nVidia GeForce Experience says it cannot optimize games on my
>>>>> guest, because the CPU is "Haswell". But afaict, this is a supported chip.
>>>>> I'm guessing there's something with the way the chip is being passed in
>>>>> that's affecting this, and I'm hoping it's simple; does anyone know?
>>>>>
>>>>> GeForce Experience Screenshot: http://imgur.com/5yRYf9A
>>>>> my XML file pastebin: http://pastebin.com/nB3DPkEr
>>>>>
>>>>
>>>> Replace host-model with host-passthrough
>>>>
>>>
>> It probably doesn't like the lack of CPU topology, it looks like a dual
>> socket, single core processor.  It might also require 4-core, I don't
>> remember.  Try:
>>
>>    <vcpu placement='static'>4</vcpu>
>>
>>   <cpu mode='host-passthrough'>
>>     <topology sockets='1' cores='4' threads='1'/>
>>   </cpu>
>>
>> If that works, try going back to 2.
>>
>
>
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