Linux/DRA745: changing on CONFIG_VMSPLIT cause kernel/Android booting fail

guangyu li

Intellectual 760 points

Part Number: DRA745

Tool/software: Linux

Dear Linux/Android expert,

I met an issue with DRA745 and 6AM.1.2.

I changed CONFIG_VMSPLIT from default 1/3G to 2/2G, but the kernel boot fail after this.

After disalbe LPAE, the kernel booting successfully but the android boot fail with zygote killed by signal 11.

After revert CONFIG_VMSPLIT to 1/3G while keep LPAE disabled, the android will boot successfully.

So the question is:

Why kernel or android boot fail after CONFIG_VMSPLIT changed.

Thanks!

Li Guangyu

over 8 years ago

0 Yordan Kamenov over 8 years ago

TI__Mastermind 42515 points

Hi,

can you post the bootlog?

Thanks,
Yordan

0 guangyu li over 8 years ago in reply to Yordan Kamenov

Intellectual 760 points

session_nlpae_2GV2G_logcat.logHi Yordan,

Here is the kernel print and logcat log, both from uart console, so there is only one file.

Do I need to rebuild Android and some so libs as the vitrual memory was shrinked from 3G to 2G, I didn't do this becuase I don't know the way?

Best Regards,

Guangyu

0 Yordan Kamenov over 8 years ago in reply to guangyu li

TI__Mastermind 42515 points

Hi Guangyu,

I have forwarded your question to Android experts.

Regards,
Yordan

0 Vishal Mahaveer over 8 years ago

TI__Mastermind 33420 points

Hi Guangyu,

By default TI SDK support only 1G/3G VMSPLIT. Other options are not tested by TI.

VMSPLIT 2G/2G makes sense only with LPAE config.
Also, VMSPLIT 2G/2G would need some update to it's bionic components. You will have to look at Google forums for this.

Regarding Kernel crash with 2G/2G + LPAE, Can you try by reducing the dtb file size (by removing unwanted components) and give it a try.
Even if you get past Kernel crash with 2G/2G + LPAE, you will hit the zygote crash again.

Regards,
Vishal

Processors

Processors forum

Linux/DRA745: changing on CONFIG_VMSPLIT cause kernel/Android booting fail