[vfio-users] Far Cry Primal

Tue Jun 14 16:25:56 UTC 2016

Actually, I also haven't seen further ones while I'm playing Overwatch.
Just at startup.  I wonder if maybe I've got something misconfigured?

On Tue, Jun 14, 2016 at 11:23 AM, Abdulla Bubshait <darkstego at gmail.com>
wrote:

> Thanks, I guess the "issue" is only from the blizzard games. It could very
> well be that this is used as some anti-tamper tool in these blizzard games,
> but I find it odd that it only does this in Win10 and that returning 0
> doesn't cause a problem.
>
> On Tue, Jun 14, 2016 at 12:06 PM Jayme Howard <g.prime at gmail.com> wrote:
>
>> I've only seen it call them at startup.  After playing for an hour or so,
>> I didn't see more of them in my dmesg output.
>>
>> On Tue, Jun 14, 2016 at 9:38 AM, Abdulla Bubshait <darkstego at gmail.com>
>> wrote:
>>
>>> For what its worth it seems Rise of the Tomb Raider also calls it, so it
>>> might be Denuvo.
>>>
>>> The interesting thing is Rise of the Tomb Raider only calls it once. So
>>> there is no performance issue. Heroes and Starcraft continuously make these
>>> calls which causes the performance issue.
>>>
>>> Can anyone confirm if Doom only calls up the MSRS in one spot or does it
>>> constantly keep calling the MSRS throughout the game?
>>>
>>> On Tue, Jun 14, 2016 at 8:55 AM thibaut noah <thibaut.noah at gmail.com>
>>> wrote:
>>>
>>>> They have the warden which is constantly checking your system
>>>>
>>>> 2016-06-14 14:36 GMT+02:00 Jayme Howard <g.prime at gmail.com>:
>>>>
>>>>> I don't think Blizzard uses Denuvo.
>>>>>
>>>>> On Tue, Jun 14, 2016 at 7:29 AM, thibaut noah <thibaut.noah at gmail.com>
>>>>> wrote:
>>>>>
>>>>>> That might also have to do with denuvo protection
>>>>>>
>>>>>> 2016-06-14 9:49 GMT+02:00 Abdulla Bubshait <darkstego at gmail.com>:
>>>>>>
>>>>>>> Yes, this is a win10 issue.
>>>>>>> Changing the Virtual CPU model does not make a difference. Each
>>>>>>> model has its own LBR register address, but one will be called.
>>>>>>>
>>>>>>> The only thing I have not tried is using an AMD processor. AMD CPUs
>>>>>>> support lbrv which is virtualization of the LBR registers, so it is handled
>>>>>>> in hardware rather than software.
>>>>>>> If anyone has an AMD CPU and a win10 VM willing to confirm if their
>>>>>>> setup does indeed work in these games, that would be great.
>>>>>>>
>>>>>>> On Tue, Jun 14, 2016 at 3:39 AM Ivan Volosyuk <
>>>>>>> ivan.volosyuk at gmail.com> wrote:
>>>>>>>
>>>>>>>> 2 things:
>>>>>>>>  - this msrs are not called from StarCraft on Win8.1.
>>>>>>>>  - i wonder if forcing virtual CPU model to something older will
>>>>>>>> disable them in Win10.
>>>>>>>>
>>>>>>>> This msrs issue is what holds me off upgrade to W10.
>>>>>>>>
>>>>>>>> On Tue, Jun 14, 2016 at 12:39 PM Jayme Howard <g.prime at gmail.com>
>>>>>>>> wrote:
>>>>>>>>
>>>>>>>>> For what it's worth, I believe I was getting them on Overwatch as
>>>>>>>>> well.  It's not happening with EVERY game I have though.
>>>>>>>>>
>>>>>>>>> On Mon, Jun 13, 2016 at 8:28 PM, Abdulla Bubshait <
>>>>>>>>> darkstego at gmail.com> wrote:
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> On Mon, Jun 13, 2016 at 6:27 PM, Jayme Howard <g.prime at gmail.com>
>>>>>>>>>> wrote:
>>>>>>>>>> > That's the output for Doom.
>>>>>>>>>> >
>>>>>>>>>> > [1639445.044855] kvm [9487]: vcpu2 kvm_set_msr_common:
>>>>>>>>>> MSR_IA32_DEBUGCTLMSR
>>>>>>>>>> > 0x1, nop
>>>>>>>>>> > [1639445.044861] kvm [9487]: vcpu2 ignored rdmsr: 0x1c9
>>>>>>>>>> > [1639445.044862] kvm [9487]: vcpu2 ignored rdmsr: 0x680
>>>>>>>>>> > [1639445.044863] kvm [9487]: vcpu2 ignored rdmsr: 0x6c0
>>>>>>>>>> > [1639445.044890] kvm [9487]: vcpu1 kvm_set_msr_common:
>>>>>>>>>> MSR_IA32_DEBUGCTLMSR
>>>>>>>>>> > 0x1, nop
>>>>>>>>>> > [1639445.044895] kvm [9487]: vcpu1 ignored rdmsr: 0x1c9
>>>>>>>>>> > [1639445.044896] kvm [9487]: vcpu1 ignored rdmsr: 0x680
>>>>>>>>>> > [1639445.044897] kvm [9487]: vcpu1 ignored rdmsr: 0x6c0
>>>>>>>>>> > [1639445.044905] kvm [9487]: vcpu1 kvm_set_msr_common:
>>>>>>>>>> MSR_IA32_DEBUGCTLMSR
>>>>>>>>>> > 0x1, nop
>>>>>>>>>> > [1639445.044907] kvm [9487]: vcpu1 ignored rdmsr: 0x1c9
>>>>>>>>>> > [1639445.044908] kvm [9487]: vcpu1 ignored rdmsr: 0x680
>>>>>>>>>> > [1639445.044909] kvm [9487]: vcpu1 ignored rdmsr: 0x6c0
>>>>>>>>>> > [1639445.046195] kvm [9487]: vcpu2 kvm_set_msr_common:
>>>>>>>>>> MSR_IA32_DEBUGCTLMSR
>>>>>>>>>> > 0x1, nop
>>>>>>>>>> > [1639445.046198] kvm [9487]: vcpu2 ignored rdmsr: 0x1c9
>>>>>>>>>> > [1639445.046204] kvm [9487]: vcpu2 kvm_set_msr_common:
>>>>>>>>>> MSR_IA32_DEBUGCTLMSR
>>>>>>>>>> > 0x1, nop
>>>>>>>>>> > [1639445.155114] kvm [9487]: vcpu0 kvm_set_msr_common:
>>>>>>>>>> MSR_IA32_DEBUGCTLMSR
>>>>>>>>>> > 0x1, nop
>>>>>>>>>> > [1639445.155123] kvm [9487]: vcpu0 kvm_set_msr_common:
>>>>>>>>>> MSR_IA32_DEBUGCTLMSR
>>>>>>>>>> > 0x1, nop
>>>>>>>>>> >
>>>>>>>>>>
>>>>>>>>>> Odd, this is another game that is contantly reading the LBR. I
>>>>>>>>>> initially thought this was part of the StarCraft 2 and Heroes of the Storm
>>>>>>>>>> code. But now I think this might be part of Windows 10. Something being
>>>>>>>>>> called by these games is causing a ton of LBR reads. Maybe DX 12?
>>>>>>>>>>
>>>>>>>>>> I think if we can find what is causing these reads in the games
>>>>>>>>>> we might be able to solve it. Because if this is the case we might be
>>>>>>>>>> getting more and more games with performance problems because of these LBR
>>>>>>>>>> checks.
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>> vfio-users mailing list
>>>>>>>>> vfio-users at redhat.com
>>>>>>>>> https://www.redhat.com/mailman/listinfo/vfio-users
>>>>>>>>>
>>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> vfio-users mailing list
>>>>>>> vfio-users at redhat.com
>>>>>>> https://www.redhat.com/mailman/listinfo/vfio-users
>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>
>>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://listman.redhat.com/archives/vfio-users/attachments/20160614/32480136/attachment.htm>