[RFC][PATCH 0/9] Clean up i386-PAE

[Peter Zijlstra]

Hi!

While reviewing some other patches [1], Willy pointed out that lockless
page-table walkers should probably be using the same magic for PMD as we do for
PTE on things like i386-PAE.

These patches are the result of that and apply on top of that earlier series.

[1] https://lkml.kernel.org/r/20201126120114.071913521@xxxxxxxxxxxxx