[PATCH 0/6] Boot-time switching between 4- and 5-level paging for 4.15, Part 1

[Kirill A. Shutemov]

The first bunch of patches that prepare kernel to boot-time switching
between paging modes.

Please review and consider applying.

Andrey Ryabinin (1):
  x86/kasan: Use the same shadow offset for 4- and 5-level paging

Kirill A. Shutemov (5):
  mm/sparsemem: Allocate mem_section at runtime for SPARSEMEM_EXTREME
  mm/zsmalloc: Prepare to variable MAX_PHYSMEM_BITS
  x86/xen: Provide pre-built page tables only for XEN_PV and XEN_PVH
  x86/xen: Drop 5-level paging support code from XEN_PV code
  x86/boot/compressed/64: Detect and handle 5-level paging at boot-time

 Documentation/x86/x86_64/mm.txt             |   2 +-
 arch/x86/Kconfig                            |   1 -
 arch/x86/boot/compressed/head_64.S          |  26 ++++-
 arch/x86/include/asm/pgtable-3level_types.h |   1 +
 arch/x86/include/asm/pgtable_64_types.h     |   2 +
 arch/x86/kernel/Makefile                    |   3 +-
 arch/x86/kernel/head_64.S                   |  11 +-
 arch/x86/mm/kasan_init_64.c                 | 101 ++++++++++++++----
 arch/x86/xen/mmu_pv.c                       | 159 +++++++++++-----------------
 include/linux/mmzone.h                      |   6 +-
 mm/page_alloc.c                             |  10 ++
 mm/sparse.c                                 |  17 +--
 mm/zsmalloc.c                               |  13 +--
 13 files changed, 210 insertions(+), 142 deletions(-)

-- 
2.14.2