[vfio-users] testing request: quirks

[Marcel Bieberbach]

Correction: the FPS drop originates in my foobar configuration, which is
blocking the only soundcard. Everything's fine!

2015-09-04 2:42 GMT+02:00 Marcel Bieberbach <mauorrizze at gmail.com>:

> Hi,
> I've modified Arch's qemu-git PKGBUILD from AUR to build from your repo
> and branch and everything is running fine.
> Everything being:
> both OVMF-Windows 10 VMs started by libvirtd, each with a graphics card
> using vfio (other devices using classic non-vfio methode I think)
>  - with a R9 280X and Intel USB3 hub, where the Soundcard/DAC is connected
> to, playing music in foobar and running the Valley benchmark
>  - with a 750Ti, Intel USB2 hub and onboard Sound, playing a Youtube Video
>  - the host with onboard Intel iGPU, running a little OSX-Safari-Testing
> qemu started via command line doing nothing, and compiling original
> qemu-git again (on 2 virtual cores, that sucks... but pinning helps a lot)
>
> There was no unusual log output, no sound problems apart from a little lag
> only once(!) including sound and the benchmark was frozen for 100-200ms.
> Accaptable as the host is realy busy, even the browser I'm writing this
> mail within the host is laggy.
>
> Only thing to notice: drastically lower FPS in the benchmark than in
> another recent scenario where host and second VM where busy. I think your
> branch is based on an older git revision? Gonna retest with the current git
> version soon.
>
> Regards,
> Marcel
>
> 2015-09-03 23:00 GMT+02:00 Alex Williamson <alex.williamson at redhat.com>:
>
>> Hey folks,
>>
>> I've been re-writing the QEMU vfio-pci quirks to be cleaner as well as
>> more extensible and maintainable.  I think that I have not regressed
>> anything and my testing agrees, but there are more of you than me.
>> These quirks are mostly what makes AMD and Nvidia GPU assignment work
>> (plus rtl NICs, but that only seems to work for the one NIC on my
>> motherboard anyway).
>>
>> For those of you who are able and familiar with building an running
>> upstream QEMU, I'd appreciate your testing feedback.  The branch is
>> available here:
>>
>> https://github.com/awilliam/qemu-vfio 20150903-quirks
>>
>> You can either clone this directly and checkout the branch:
>>
>> $ git clone git://github.com/awilliam/qemu-vfio qemu-vfio.git
>> $ git checkout 20150903-quirks
>>
>> Or if you have an existing QEMU git clone, you can add me as a remote
>> and checkout the branch:
>>
>> $ git remote add qemu-vfio git://github.com/awilliam/qemu-vfio
>> $ git remote update qemu-vfio
>> $ git checkout qemu-vfio/20150903-quirks
>>
>> I'd appreciate any testing and feedback.  If you do test it, please
>> report back along with the assigned device, the guest OS, and for GPUs
>> whether they're being used with x-vga=on or not.  Also note that I don't
>> expect any improvements that will have fixed anything not previously
>> working.  If you think you've found a regression, the above branch is
>> based on QEMU 2.4.0, so please carefully verify whether the issue is
>> really a regression or the current state of QEMU.  Thanks!
>>
>> Alex
>>
>> _______________________________________________
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>> vfio-users at redhat.com
>> https://www.redhat.com/mailman/listinfo/vfio-users
>>
>
>
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