Dear Jan
Thanks for your guidance
I have another question, in the " Setup on Banana Pi ARM board", it mentioned 
that " The kernel requires a small patch in order to build the Jailhouse driver 
module", the file of " arch/arm/kernel/armksyms.c "  need to modified.

My understanding for this is as following:
1 git clone 
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
2 cd ~/linux-stable
3 git checkout v4.3.3
4 Modify the " arch/arm/kernel/armksyms.c "  manually by VIM.
5 for i in ../bananian/kernel/4.3.3/patches/*; do patch -p1 < $i; done
6 .......

Is my understanding right?

-----Original Message-----
From: Jan Kiszka [mailto:[email protected]] 
Sent: Tuesday, June 4, 2019 2:03 PM
To: Xiong, Lei (CT RDA FOA ART-CN1)
Cc: [email protected]
Subject: Re: How to disable CONFIG_VIDEO in the U-Boot config

On 04.06.19 07:47, Xiong, Lei (CT RDA FOA ART-CN1) wrote:
> Dear Jan
> 
> In fact, my hardware platform is banana PI M1+, I do not find "Banana Pi M1+" 
> in the " images.list ".
> Is there a jailhouse-images supported for "Banana Pi M1+"?
> 

Not explicitly. We support the classic Orange Pi Zero, but that is also 
A20-based. Maybe you can use that image on the M1+ as well, only tuning some 
boot parameters and using different Jailhouse configs (all available ones are 
being installed) in the end. I don't have such board in reach to cross-check, 
unfortunately.

In general, ARMv7-based setups with Jailhouse need to be considered more as 
demonstrations than as production platforms. Those SOCs typically lack SMMUs 
that you need for full isolation, and most activities on ARM-side now go into 
v8 designs.

Jan

> 
> Thanks you very much~
> 
> -----Original Message-----
> From: Jan Kiszka [mailto:[email protected]]
> Sent: Tuesday, June 4, 2019 1:14 PM
> To: Xiong, Lei (CT RDA FOA ART-CN1)
> Subject: Re: How to disable CONFIG_VIDEO in the U-Boot config
> 
> On 04.06.19 07:10, Jan Kiszka wrote:
>> Hi Lei Xiong,
>>
>> On 04.06.19 02:46, Xiong, Lei wrote:
>>> Dear colleagues,
>>>
>>> In the “Setup on Banana Pi ARM board” part, it mentioned that 
>>> “*since v2015.10, you need to disable CONFIG_VIDEO in the U-Boot 
>>> config*, or U-Boot will configure the framebuffer at the end of the 
>>> physical RAM where Jailhouse is located.”
>>>
>>> My question is that how to disable CONFIG_VIDEO in the U-Boot 
>>> config?**
>>>
>>
>> Via "make menuconfig" during the manual u-boot build - which the 
>> description is not covering in details. If you do not want to fiddle 
>> with that, I can warmly recommend jailhouse-images [1] and a board that is 
>> supported by it out of the box.
>>
>> Jan
>>
>> [1] https://github.com/siemens/jailhouse-images
>>
> 
> ...and we can also discuss directly if you have further questions.
> 
> That said, generic discussions via the mailing list are always very 
> much appreciated as they strengthen the community. Thanks for taking that 
> route!
> 
> Jan
> 

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

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