Hi, On Thu, Feb 26, 2015 at 10:30 AM, François Revol <revol@xxxxxxx> wrote: > On ARM currently some variants still need syscalls for the 64bit > atomics. I'm not sure which though, likely > the asm implementations are inside some #ifdef ? > < ARM11 need both 32 and 64 bit versions to be sys calls, ARM11 needs the 64 bit versions to be sys calls, anything newer can do both inline. If we drop support for < rPi2, we can forget about using sys calls all together :) Ithamar.