On Tue, Dec 12, 2017 at 10:41:03PM +0100, Thomas Gleixner wrote: > Now that made me go back to the state of the patch series which made us > make that magic 'touch' and write fault handler. The difference to the code > today is that it did not prepopulate the user visible mapping. > > We added that later because we were worried about not being able to > populate it in the #PF due to memory pressure without ripping out the magic > cure again. > > But I did now and actually removing both the user exit magic 'touch' code > and the write fault handler keeps it working.
Argh, had we really not tried that!? Bah.
