Here's few changes to x86 decompression code.
The first patch is pure cosmetic change: it gives file with KASLR helpers
a proper name.
The last two patches bring support of booting into 5-level paging mode if
a bootloader put the kernel above 4G.
Patch 2/3 handles allocation of space for trampoline and gets it prepared.
Patch 3/3 gets trampoline used.
Kirill A. Shutemov (3):
x86/boot/compressed/64: Rename pagetable.c to kaslr_64.c
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 | 2 +-
arch/x86/boot/compressed/head_64.S | 138 +++++++++++++--------
.../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, 153 insertions(+), 66 deletions(-)
rename arch/x86/boot/compressed/{pagetable.c => kaslr_64.c} (100%)
create mode 100644 arch/x86/boot/compressed/pgtable.h
--
2.15.0
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