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 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx"> email@xxxxxxxxx </a>