On Tue, Aug 01, 2017 at 06:42:00PM +0200, Peter Zijlstra wrote: > On Tue, Aug 01, 2017 at 09:14:12AM -0700, Paul E. McKenney wrote: > > So if ARM really needs the litmus test with smp_rmb() to be allowed, > > we need to adjust the Linux-kernel memory model appropriately. Which > > means that one of us needs to reach out to the usual suspects. Would > > you like to do that, or would you like me to? > > I'm really sad ARM8.1 LSE breaks this stuff.. It is rather counter > intuitive (then again, we _are_ talking barriers).
I can upgrade smp_rmb to smp_mb if I have to, but I still think that code using smp_rmb() to order an operation that doesn't return a value is weird. Will
