[vfio-users] BSOD occuring with 1 game in VM

[Quentin Deldycke]

Hello,

I also play quite much this game. Adding this option makes the game "Works".

But for me, it is also the game with worst performance. As there is a storm
of unsupported msr (not 1 or 2 but hundreds of thousands...)

Do you have correct performance?  I go between 120 at begging to 15 during
fights.

Note that this is the only game making such mess with msr. Other blizzard
games works perfectly...
On 11 May 2016 1:04 am, "Abdulla Bubshait" <darkstego at gmail.com> wrote:

> Just put that in and it solved the problem.
>
> Thanks
>
> On Tue, May 10, 2016 at 6:54 PM Alex Williamson <
> alex.l.williamson at gmail.com> wrote:
>
>> On Tue, May 10, 2016 at 4:40 PM, Abdulla Bubshait <darkstego at gmail.com>
>> wrote:
>>
>>> I have a pretty stable VFIO setup running for a while, but I am stuck
>>> with this
>>> odd problem where 1 game (heroes of the storm) keeps giving me a BSOD
>>> whenever I try to run it in the VM under Windows 10.
>>>
>>>  All other games are running fine. If I install Windows 8 in the VM the
>>> game runs fine.
>>>  If I boot the machine into the Windows 10 HDD directly the game runs
>>> fine.
>>> This crash occurs with both Nvidia GTX 770 and AMD Fury X.
>>> It only crashes when in VM and Windows 10.
>>>
>>> The BSOD is some form of exception. Examples that occur
>>> SYSTEM_SERVICE_EXCEPTION
>>> KMODE_EXCEPTION_NOT_HANDLED
>>> SYSTEM_THREAD_EXCEPTION_NOT_HANDLED_M
>>> The dump files seem to suggest a windows8 driver issue,
>>> but I can't pinpoint any faulty driver.
>>>
>>> I am running netrunner (manjaro) kernel 4.4.9, qemu 2.5.1.
>>>
>>> My config is:
>>> http://pastebin.com/W6cPyMEB
>>>
>>> Sample BSOD dumps:
>>> http://pastebin.com/bgh2uEhf
>>> http://pastebin.com/SLPTVUwn
>>> http://pastebin.com/zdjTzKuV
>>> http://pastebin.com/8Lt5VfLg
>>>
>>> Welcome any ideas to fix this problem. Thanks,
>>>
>>
>>
>> Do you have the following set in a modprobe.d conf file?
>>
>> options kvm ignore_msrs=1
>>
>> Windows BSODs are often the result of calling an unsupported MSR and not
>> handling the exception.  There's some risk to this option because zero
>> isn't guaranteed to be a valid return for an unknown MSR, but it seems to
>> solve a lot of problems.  YMMV.
>>
>
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