On Fri, Jul 19, 2019 at 08:48:53AM -0300, Jason Gunthorpe wrote: > It is like MMU_NOTIFIERS, if something needs it, then it will select > it. > > Maybe it should just be a hidden kconfig anyhow as there is no reason > to turn it on without also turning on a using driver.
We can't just select it due to the odd X86_64 || PPC64 dependency. Which also answers Pavels question: you never really need it, as we can only use it for optional functionality due to that.