> Remark: we do have code which (while acknowledging that "interrupts are > synchronization points") doesn't quite seem to "believe it", c.f., e.g., > kernel/sched/membarrier.c:ipi_mb(). So, I guess the follow-up question > would be "Would we better be (more) paranoid? ..." should have been "IPIs are serializing" (so all a different "order"...) Andrea
