Hi,

On 6/21/19 2:22 PM, Valentine Sinitsyn wrote:
> Hi Adam,
> 
> On 21.06.2019 17:16, Adam Przybylski wrote:
>> Dear Jailhouse Community,
>>
>> I am trying to enabled Jailhouse on the AMD EPYC 7351P 16-Core
>> Processor. Unfortunately the system hangs after I execute "jailhouse
>> enable sysconfig.cell".
>>
>> Do you have any hint how to debug and instrument this issue?
>>
>> Any kind of help is appreciated.
>>
>> Attached you can find the jailhouse logs, processor info, and
>> sysconfig.c.
>>
>> Looking forward to hear from you.
> I'd say the following line is the culprit:
> 
>> FATAL: Invalid PIO read, port: 814 size: 1

Could you please attach /proc/ioports? This will tell us the secret
behind Port 814.

> 
> As a quick fix, you may grant your root cell access to all I/O ports and
> see if it helps.

Allowing access will suppress the symptoms, yet we should investigate
its cause. Depending on the semantics of Port 819, to allow access might
have unintended side effects.

You could also try to disassemble your kernel (objdump -d vmlinux) and
check what function hides behind the instruction pointer at the moment
of the crash 0xffffffffa4ac3114.

  Ralf

> 
> Best,
> Valentine
> 
>>
>> Kind regards,
>> Adam Przybylski
>>
> 

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