Pull x86 mm updates from Ingo Molnar:
 "The main changes in this cycle were:

   - A PAT series from Davidlohr Bueso, which simplifies the memtype
     rbtree by using the interval tree helpers. (There's more cleanups
     in this area queued up, but they didn't make the merge window.)

   - Also flip over CONFIG_X86_5LEVEL to default-y. This might draw in a
     few more testers, as all the major distros are going to have
     5-level paging enabled by default in their next iterations.

   - Misc cleanups"

* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm/pat: Rename pat_rbtree.c to pat_interval.c
  x86/mm/pat: Drop the rbt_ prefix from external memtype calls
  x86/mm/pat: Do not pass 'rb_root' down the memtype tree helper functions
  x86/mm/pat: Convert the PAT tree to a generic interval tree
  x86/mm: Clean up the pmd_read_atomic() comments
  x86/mm: Fix function name typo in pmd_read_atomic() comment
  x86/cpu: Clean up intel_tlb_table[]
  x86/mm: Enable 5-level paging support by default