Ryzen issues on FreeBSD ? (with sort of workaround)

[Pete French]

So, I have been running the patched kernel for quiet a while now, and it 
works fine for me, but last night I did hit a surprising issue - the 
Linux emulator does not work on Ryzen / Epyc. I tried this on two 
machines (both with the patches) and it coredumps when simply running 
bash on both of them. I copied the OS over to an Intel machine, and that 
works fine.

I have not tried running with an unpatched kernel on the Ryzen machine 
(I dont have one to hand) but I did try applying the sysctls to the 
Intel box to see if that wuld cause the Linux binaries to crash. It didn't.

-pete.