IIUC it's not possible to opt out at this time (short of reverting the patches). Linus expressed some concern about it: https://lkml.org/lkml/2018/1/3/797
Please talk to management. Because I really see exactly two possibibilities:
- Intel never intends to fix anything
OR
- these workarounds should have a way to disable them.
Which of the two is it?