Memcpy function using NEON doesnt work in Andriod Linux Kernel

achahar · 11-13-2012, 01:14 AM

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, 05:17 PM

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

achahar · 11-14-2012, 06:28 PM

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

rodman1 · 02-05-2013, 11:16 PM

There is alot of technical info to learn