Kernel 4.15-rc7 is out, and (brief) details of changes since -rc6 are here: http://lkml.iu.edu/hypermail/linux/kernel/1801.0/04858.html. The preamble is worth a read, as it pays tribute to the work done on the x86 PTI fixes..
Vmmon-patched VMware 14.1.0 is OK (see: https://github.com/mkubecek/vmware-host-modules/tree/workstation-14.1.0 ) and the latest NVIDIA drivers – 384.111 and 390.12 are both still OK.
As mentioned, in view of the PTI work, there will be a 4.15-rc8 – at least – before 4.15 Final is released..
Robert Gadsdon. January 7, 2018.