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-   -   Memcpy function using NEON doesnt work in Andriod Linux Kernel (http://www.linuxquestions.org/questions/linux-mobile-81/memcpy-function-using-neon-doesnt-work-in-andriod-linux-kernel-4175436880/)

achahar 11-13-2012 02:14 AM

Memcpy function using NEON doesnt work in Andriod Linux Kernel
 
Dear all,

I have been trying to implement memcpy function using NEON instructions in order to make it fast in Andriod linux kernel, but it makes kernel hang. I have tried debugging it using Trace32 and apparently the function does copy properly. Kernel works well before kicking CPU 1.

Anybody has any experience on this issue ?

smallpond 11-14-2012 06:17 PM

Yes. I've had 20 years of experience with this exact issue. There is a mistake in your code.

achahar 11-14-2012 07:28 PM

ok. I didnt know that NEON technology is that old, WOW. BTW, whats the mistake in my code.

rodman1 02-06-2013 12:16 AM

tech info
 
There is alot of technical info to learn


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