On 06/21/2017 05:45 PM, 'florian' via Jailhouse wrote:
> Am Mittwoch, 21. Juni 2017 17:39:14 UTC+2 schrieb Ralf Ramsauer:
>> Hi,
>>
>> On 06/21/2017 05:14 PM, 'florian' via Jailhouse wrote:
>>> Hi,
>>> I want to run jailhouse on the TX1 (like I described you Ralf).> Because we 
>>> use the TX1 for several other projects I want to cross
>> compile all the things (also the kernel, so kernel objects are
>> available). I used the description of
>> https://github.com/evidence/linux-jailhouse-tx1 and from the main github
>> page and did following:
>>>
>>> - After compiling on my laptop I moved the whole jailhouse directory to the 
>>> TX1
>>> - I manually inserted the kernel module with insmod driver/jailhouse.ko
>>> - I also changed the firmware search path in 
>>> /sys/module/firmware_class/parameters/path (pointing to the tools/jailhouse 
>>> file.)
>> Did you use an absolute path?
>>> - After that I want to start jailhouse with 'tools/jailhouse enable 
>>> configs/jetson-tx1.cell' but I always getting the error 'JAILHOUSE_ENABLE: 
>>> No such file or directory'. 
>> Look at your kernel ring buffer (dmesg). I bet it's unable to locate the
>> firmware for some reason.
>>
>>   Ralf
>>>
>>> /dev/jailhouse also exists!
>>>
>>> I do not know why this error occurs or why. It looks like failing in 
>>> jailhouse.c enable function, that was the only place I found the string 
>>> 'JAILHOUSE ENABLE'
>>>
>>> Best regards!
>>>
> 
> root@tegra-ubuntu:~/linux-jailhouse-tx1# cat 
> /sys/module/firmware_class/parameters/path 
> /home/ubuntu/linux-jailhouse-tx1/tools/jailhouse
That's the wrong path. You're pointing to the userspace tool and not to
the hypervisor firmware binary, which is, in case of ARM and ARM64,
located at hypervisor/jailhouse.bin .

Besides that, I recommend to stick to the upstream repository, we're
already some patches ahead, especially if you're using a kernel >4.7.

There's a patch on top of the evidence repo that reverts some older
patch for compatibility with kernels <4.7. Evidence sticks to a pretty
old kernel version because they need official Nvidia binary blobs for
graphics support that are only available for bloody old kernel versions.

  Ralf
> So, yes its an absolute path.
> 
> Yes, you're right. I found this error
> jailhouse: Missing hypervisor image jailhouse.bin
> So the path must point to the jailhouse.bin file?
> 

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