[PATCH 0/2] kvm: Use huge pages for DAX-backed files

[Barret Rhoden]

This patch series depends on dax pages not being PageReserved.  Once
that is in place, these changes will let KVM use huge pages with
dax-backed files.  Without the PageReserved change, KVM and DAX still
work with these patches, simply without huge pages - which is the
current situation.

RFC/discussion thread:
https://lore.kernel.org/lkml/20181029210716.212159-1-brho@xxxxxxxxxx/

Barret Rhoden (2):
  mm: make dev_pagemap_mapping_shift() externally visible
  kvm: Use huge pages for DAX-backed files

 arch/x86/kvm/mmu.c  | 34 ++++++++++++++++++++++++++++++++--
 include/linux/mm.h  |  3 +++
 mm/memory-failure.c | 38 +++-----------------------------------
 mm/util.c           | 34 ++++++++++++++++++++++++++++++++++
 4 files changed, 72 insertions(+), 37 deletions(-)

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2.19.1.930.g4563a0d9d0-goog