On 23/03/2018 20:59, Barry, Kyle wrote: > Will retpoline be backported to 5.4.0? Disclaimer: Just a regular user. The head of the GCC 5 branch is GCC 5.5, released on 2017-10-10 https://gcc.gnu.org/gcc-5/ AFAIU, GCC 5 is no longer supported by the GCC project. However, this doesn't preclude LTS-focused companies such a Redhat or SUSE from back-porting security fixes to older branches. Regards.