On Wed, 19 Feb 2020 16:40:31 +0100 Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote: > > Hmm, for things like this, which is adding notrace because of a single > > instance of it (although it is fine to trace in any other instance), it > > would be nice to have a gcc helper that could call "memmove+5" which > > would skip the tracing portion. > > Or just open-code the memmove() in do_double_fault() I suppose. I don't > think we care about super optimized code there. It's the bloody ESPFIX > trainwreck. Or just create a memmove_notrace() version and use that. -- Steve
