On Wed, Nov 6, 2019 at 12:56 AM Sami Tolvanen <samitolvanen@xxxxxxxxxx> wrote: > > If we detect a corrupted x18 and SCS is enabled, restore the register > before jumping back to instrumented code. This is safe, because the > wrapper is called with preemption disabled and a separate shadow stack > is used for interrupt handling. In case you do v6: I think putting the explanation about why this is safe in the existing comment would be best given it is justifying a subtlety of the code rather than the change itself. Ard? Cheers, Miguel
