Re: [smartos-discuss] Weird msr instructions

[Micky]

After trying "-cpu host" for month, I can confirm that I can no longer
reproduce this issue.

This seems to have resolved the weird MSR from win32 kernel.

Thought to let you guys know!

On Thu, Feb 2, 2017 at 9:05 AM, Micky  wrote:

> Thanks for checking, Robert.
>
> I looked that up. NONE of the Intel's MSRs are that long[1]
>
> In source code, I found few MSRs that long but they are only for KVM's
> internal usage.
>
> May be Win32 kernel is going crazy.
>
> I'm already testing with the '-cpu host' as you suggested in IRC and will
> report back.
>
> Reference:
> [1] Chapter 35 of Vol. 3 (full) Intel's System Programming Maual.
>
>
>
>
> On Thu, Feb 2, 2017 at 6:30 AM, Robert Mustacchi  wrote:
>
>> On 1/30/17 23:17 , Micky wrote:
>> > Does anyone know what kind of MSR instructions are these:
>> >
>> > unhandled rdmsr: 0xc
>> > unhandled wrmsr: 0x50cc47 data 90
>> >
>> > Because every time this happens, the KVM VM crashes without any trace or
>> > activity in kvmstat.
>> 
>> You'll want to go through the Intel manuals to determine what exactly
>> that MSR is for. Unfortunately I'm not sure off hand.
>> 
>> Robert
>> 
>
>



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Re: [smartos-discuss] Weird msr instructions

[Micky]

Thanks for checking, Robert.

I looked that up. NONE of the Intel's MSRs are that long[1]

In source code, I found few MSRs that long but they are only for KVM's
internal usage.

May be Win32 kernel is going crazy.

I'm already testing with the '-cpu host' as you suggested in IRC and will
report back.

Reference:
[1] Chapter 35 of Vol. 3 (full) Intel's System Programming Maual.




On Thu, Feb 2, 2017 at 6:30 AM, Robert Mustacchi  wrote:

> On 1/30/17 23:17 , Micky wrote:
> > Does anyone know what kind of MSR instructions are these:
> >
> > unhandled rdmsr: 0xc
> > unhandled wrmsr: 0x50cc47 data 90
> >
> > Because every time this happens, the KVM VM crashes without any trace or
> > activity in kvmstat.
> 
> You'll want to go through the Intel manuals to determine what exactly
> that MSR is for. Unfortunately I'm not sure off hand.
> 
> Robert
> 



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Re: [smartos-discuss] Weird msr instructions

[Robert Mustacchi]

On 1/30/17 23:17 , Micky wrote:
> Does anyone know what kind of MSR instructions are these:
> 
> unhandled rdmsr: 0xc
> unhandled wrmsr: 0x50cc47 data 90
> 
> Because every time this happens, the KVM VM crashes without any trace or
> activity in kvmstat.

You'll want to go through the Intel manuals to determine what exactly
that MSR is for. Unfortunately I'm not sure off hand.

Robert



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[smartos-discuss] Weird msr instructions

[Micky]

Does anyone know what kind of MSR instructions are these:

unhandled rdmsr: 0xc
unhandled wrmsr: 0x50cc47 data 90

Because every time this happens, the KVM VM crashes without any trace or
activity in kvmstat.



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