On 2016-06-29 08:07, Dube, Swaraj wrote:
> Hi,
> Attached above are the output images. Please note that file Part_3 and Part_4 
> are the ones that contain the message about the task block for 120 seconds.

That's not the UART output, that's the kernel message dump. Do you have
a UART connection from the target to a second machine? If your target
has no serial port, you may also use the VGA console (see
Documentation/vga-console.txt).

Jan

> 
> Regards,
> Swaraj Dube.
> 
> -----Original Message-----
> From: Jan Kiszka [mailto:[email protected]] 
> Sent: Wednesday, June 29, 2016 2:02 PM
> To: Dube, Swaraj <[email protected]>; Jailhouse 
> <[email protected]>
> Subject: Re: The Jailhouse is opening: Kernel Panic - not syncing: hung task: 
> blocked task
> 
> On 2016-06-29 04:17, [email protected] wrote:
>> Hi,
>>
>> Firstly thank you Jan for notifying me about the memmap setting in the GRUB, 
>> what I did was add memmap=0x4200000\$0x3b000000 in /boot/EFI/BOOT/grub.cnf 
>> and reboot the system and to all the others who are viewing this, I am 
>> performing these operations on a real hardware (x86 Intel architecture). 
>>
>> I then did the 'make' process again to get the root cell file i.e. 
>> myboard.cell:
>> - make KDIR=/usr/src/kernel
>> - make firmware_install KDIR=/usr/src/kernel
>> - rmmod /driver/jailhouse.ko
>> - insmod /driver/jailhouse.ko
>>
>> By the end of this step I had obtained myboard.cell already and all that was 
>> remaining was to enable it so I then did the following:
>>
>> "tools/jailhouse enable configs/myboard.cell" but before this I disabled 
>> intel_iommu , i.e. intel_iommu=off in /boot/EFI/BOOT/grub.cnf otherwise I 
>> cannot enable the root cell.
>>
>> It then says "The jailhouse is opening" which is then followed by a lot of 
>> call traces and then it says "sending NMI to all CPUs" followed by " Kernel 
>> Panic - not syncing: hung task: blocked task" followed by some more call 
>> traces and then "Shutting down CPUs with NMI" then "Kernel Offset: disabled" 
>> and then it is stuck, I cannot escape and I have to press the reset button 
>> on my board to start over.
>>
>> I did search up about kernel panics and it says that the hardware is 
>> usually at fault but I think I am missing out on something here , 
>> could it be some package or am I missing something in the GRUB 
>> settings? , Any help will be appreciated :)
> 
> Please post the output of the serial console that Jailhouse reports to.
> 
> Jan
> 
> --
> Siemens AG, Corporate Technology, CT RDA ITP SES-DE Corporate Competence 
> Center Embedded Linux
> 


-- 
Siemens AG, Corporate Technology, CT RDA ITP SES-DE
Corporate Competence Center Embedded Linux

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