[lttng-dev] Alternative to signals/sys_membarrier() in liburcu

Benjamin Herrenschmidt benh at kernel.crashing.org
Sat Mar 14 17:06:50 EDT 2015

On Thu, 2015-03-12 at 14:12 -0700, Paul E. McKenney wrote:
> Are there any architectures left that use hardware-assisted global
> TLB invalidation?  

ARM and PowerPC at least...


> On such an architecture, you might not get a memory
> barrier except on the CPU executing the mprotect() or munmap().
> (Here is hoping that no one does -- it is a cute abuse^Whack
> otherwise!)

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