[vfio-users] VM doesn't book with kernel 4.2.3-1-vfio

[Marcel Bieberbach]

>
>>
>> I think there's still something up between Qemu and OVMF.
>>
>
Hi, in my case, the VM with an nVidia 750Ti has been booting fine
throughout 4.2 and 4.3 and a few OVMF and qemu updates. But my similar,
main VM with an AMD 280X hasn't booted once with any combination since the
kernel update to some arch-vfio-4.2 version, including 4.3-mainline (+ACS
patch). No suspicious dmesg output at all, only VM stalling as soon as the
hardware is passed through and CPU load jumps between zero, 100% on one and
50% on all the VM's 4 cores/threads.
I continue to use vfio-lts with about weekly updated git qemu and git OVMF
versions without problems. As soon as 4.1 gets "too old" or I find a lot of
free time, I'm gonna try to contribute more verbose output, but for now I'm
okay with 4.1.x.

Regards,
Marcel
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