Kernel 4.17-rc6 has been released, and details of changes since -rc5 are here:  http://lkml.iu.edu/hypermail/linux/kernel/1805.2/03965.html

This version is still OK with the latest VMware (14.1.1) and NVIDIA (396.24) drivers, but also includes fixes for repeated GCC8 / objtool warnings at compile time:

……………….
Josh Poimboeuf (5):
……….
objtool: Support GCC 8’s cold subfunctions
objtool: Support GCC 8 switch tables
…………….

I have confirmed these with GCC 8.1.1 (Fedora 28)..

Robert Gadsdon.  May 20, 2018.