On Tue, Oct 03, 2017 at 06:14:11PM +0100, Marc Zyngier wrote: > I've just noticed that both the CCI and CCN drivers have a small > buglet in that they call smp_processor_id() from preemptible context, > which is frown upon (having just booted a 4.13 kernel with > DEBUG_PREEMPT on my Seattle, I was surprised to be greeted with a nice > backtrace...). > > I've tested the CCN patch on the same Seatle box, but I've only > compile-tested the equivalent CCI patch (which is obviously correct -- > famous last words...). > > Thanks, > > M. > > * From v1: Keep the current CPU refcount until we have registered the > CPU notifiers, making sure we don't race against a surprise hotplug > off. > > Marc Zyngier (2): > bus: arm-ccn: Fix use of smp_processor_id() in preemptible context > bus: arm-cci: Fix use of smp_processor_id() in preemptible context
For both: Acked-by: Mark Rutland <[email protected]> Thanks, Mark.
