Kernel 5.1-rc3 has been released, and brief details of changes since -rc2 are here:  http://lkml.iu.edu/hypermail/linux/kernel/1903.3/08402.html

NVIDIA 418.56 with the 5.1 patch compiles and runs OK, but if you are still using VMware 15.0.3 – with the vmmon/vmnet patches – the installer may fail, with a rather vague error message:

..........
make[1]: 'postbuild' is up to date.
make[1]: Leaving directory '/tmp/modconfig-1WHh6e/vmnet-only'
cp -f vmnet.ko ./../vmnet.o
make: Leaving directory '/tmp/modconfig-1WHh6e/vmnet-only'
Unable to install all modules. See log for details.

The log simply states that vmware-installer has failed with ‘error 256’, and the solution for this is simple – update to VMware 15.0.4, and apply the patches for vmmon/vmnet, and everything should work OK.

Robert Gadsdon.   March 31, 2019