[PATCHv2 0/4] x86: 5-level related changes into decompression code

[Kirill A. Shutemov]

Hi Ingo,

Here's updated changes that prepare the code to boot-time switching between
paging modes and handle booting in 5-level mode when bootloader put kernel
image above 4G, but haven't enabled 5-level paging for us.

I've updated patches based on your feedback.

Please review and consider applying.

Kirill A. Shutemov (4):
  x86/boot/compressed/64: Rename pagetable.c to kaslr_64.c
  x86/boot/compressed/64: Detect and handle 5-level paging at boot-time
  x86/boot/compressed/64: Introduce place_trampoline()
  x86/boot/compressed/64: Handle 5-level paging boot if kernel is above
    4G

 arch/x86/boot/compressed/Makefile                  |   3 +-
 arch/x86/boot/compressed/head_64.S                 | 108 +++++++++++++--------
 .../boot/compressed/{pagetable.c => kaslr_64.c}    |   0
 arch/x86/boot/compressed/pgtable.h                 |  18 ++++
 arch/x86/boot/compressed/pgtable_64.c              |  61 ++++++++++++
 5 files changed, 150 insertions(+), 40 deletions(-)
 rename arch/x86/boot/compressed/{pagetable.c => kaslr_64.c} (100%)
 create mode 100644 arch/x86/boot/compressed/pgtable.h
 create mode 100644 arch/x86/boot/compressed/pgtable_64.c

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2.14.2