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

[Brett Peckinpaugh]

Have you tried running the game in compatibility mode set to 8.1?

On May 11, 2016 5:26:19 AM PDT, Abdulla Bubshait <darkstego at gmail.com> wrote:
>StarCraft and heroes are the two games that have this problem, they are
>both based on the same engine. Unfortunately I cannot test the cpu
>because
>if I were to change my cpu to anything but "host" my machine will not
>boot
>(I believe this is due to a problem with the AMD drivers).
>
>I believe the MSRs are called by Windows 10, since they are privileged
>registers. Likely for debugging purposes here.
>
>I would suggest trying something more related tou your  cpu ("Haswell"
>in
>my case) instead of "core2duo". I remember when I first tried to
>install
>Win10 under virt-manager I got a KVM error about unsupported cpu
>functions
>when I tried to clone the host cpu. Setting it to Haswell cleared those
>errors so this might have something to do with it. Unfortunately that
>didn't play nice with my video card so I ended up with a command line
>setup
>as virt-manager setup refused to load AMD drivers.
>Hope this helps.
>
>Abdulla
>
>On Wed, May 11, 2016, 04:03 Ivan Volosyuk <ivan.volosyuk at gmail.com>
>wrote:
>
>> My 2c: I had the same issues with StarCraft crashing on Win10 due to
>the
>> unsupported msrs (or producing lots of logs in dmesg). On Win8.1 I
>don't
>> have this problem. My best guess is that nvidia drivers for Win10
>started
>> to use msrs unsupported by qemu. Can you change your CPU to emulated
>> core2duo and check if it actually works faster and doesn't produce
>this
>> logging spam?
>>
>> On Wed, May 11, 2016 at 4:50 PM Quentin Deldycke <
>> quentindeldycke at gmail.com> wrote:
>>
>>> 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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>>
>
>
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