On Wed, Jan 3, 2018 at 4:15 PM, Dan Williams <dan.j.williams@xxxxxxxxx> wrote: > The 'if_nospec' primitive marks locations where the kernel is disabling > speculative execution that could potentially access privileged data. It > is expected to be paired with a 'nospec_{ptr,load}' where the user > controlled value is actually consumed. I'm much less worried about these "nospec_load/if" macros, than I am about having a sane way to determine when they should be needed. Is there such a sane model right now, or are we talking "people will randomly add these based on strong feelings"? Linus