On Mon, 29 Mar 2021 at 14:07, Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote: > (and we might already have a problem on some architectures where there > can be significant time between these due to not having > arch_irq_work_raise(), so ideally we ought to double check current in > your case) I missed this bit -- just to verify: here we want to check that event->ctx->task == current, in case the the irq_work runs when the current task has already been replaced. Correct? Thanks, -- Marco