On 05.10.18 16:13:48, Matthias Brugger wrote: > On 05/10/2018 15:42, Marc Zyngier wrote: > > On 05/10/18 13:33, Matthias Brugger wrote:
> >> With my distribution head on, I would prefer a solution that does not > >> change > >> FORCE_MAX_ZONEORDER. That's how I came to the idea providing a third > >> solution to > >> the same problem :) > > > > Why is that a problem? What impact does this have on your favourite distro? > > > > The impact is on changing FORCE_MAX_ZONEORDER on an already released kernel > will > break Kernel ABI and with that all external modules. I know that's nothing > upstream cares too much about, but the distros do :) Wrt upstream, there is no way to do this change without patching the kernel. Thus, it is impossible to run an unpatched 4k page size kernel on ThunderX. -Robert
