[dpdk-dev] rte_memcpy optimization patch to dpdk ver 1.7

Vithal S Mohare vmohare at arubanetworks.com
Tue Feb 17 09:39:22 CET 2015


Hi,

I am trying to use rte_memcpy optimization patch along with dpdk version 1.7.  With the patch, while dpdk itself is compiled, applications failed with below error:
-------------------------------
include/rte_memcpy.h:629:2: error: implicit declaration of function '_mm_alignr_epi8' [-Werror=implicit-function-declaration]
/home/vithals/adu_src/build/x-men_dev/Default/shumway/infra/dpdk/shumway_obj/lib/../include/rte_memcpy.h:629:2: error: incompatible type for argument 2 of '_mm_storeu_si128'
-------------------------------

After including -mssse3 flags, compilation (cross compiled for a x86 linux based platform) went through.  Now the question is, when this binary is loaded on system that doesn't support SSSE3 instruction set (but just sse2 etc), what would be the behavior?

Thanks,
-Vithal


More information about the dev mailing list