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

[Quentin Deldycke]

Radeon user here. So i think it is the game who calls these msrs and not
the driver...

Anyway, i tried core2duo, but i even do not pass ovmf splash using it...

--
Deldycke Quentin


On 11 May 2016 at 10:03, 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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