Hi, Big pile of ARC mm changes to prepare for 3 or 4 levels of paging (from current 2) needed for new hardware page walked MMUv6 (in aRCv3 ISA based cores). Most of these changes are incremental cleanups to make way for 14/18 and 15/18 which actually imeplement the new levels (in existing ARCv2 port) and worth a critical eye. CC'ing some of you guys dealing with page tables for a while :-) to spot any obvious gotchas. Thx, -Vineet Vineet Gupta (18): ARC: mm: simplify mmu scratch register assingment to mmu needs ARC: mm: remove tlb paranoid code ARC: mm: move mmu/cache externs out to setup.h ARC: mm: remove pgd_offset_fast ARC: mm: Fixes to allow STRICT_MM_TYPECHECKS ARC: mm: Enable STRICT_MM_TYPECHECKS ARC: ioremap: use more commonly used PAGE_KERNEL based uncached flag ARC: mm: pmd_populate* to use the canonical set_pmd (and drop pmd_set) ARC: mm: non-functional code cleanup ahead of 3 levels ARC: mm: move MMU specific bits out of ASID allocator ARC: mm: move MMU specific bits out of entry code ARC: mm: disintegrate mmu.h (arcv2 bits out) ARC: mm: disintegrate pgtable.h into levels and flags ARC: mm: hack to allow 2 level build with 4 level code ARC: mm: support 3 levels of page tables ARC: mm: support 4 levels of page tables ARC: mm: vmalloc sync from kernel to user table to update PMD ... ARC: mm: introduce _PAGE_TABLE to explicitly link pgd,pud,pmd entries arch/arc/Kconfig | 7 +- arch/arc/include/asm/cache.h | 4 - arch/arc/include/asm/entry-compact.h | 8 - arch/arc/include/asm/mmu-arcv2.h | 94 +++++++ arch/arc/include/asm/mmu.h | 73 +---- arch/arc/include/asm/mmu_context.h | 29 +- arch/arc/include/asm/page.h | 72 +++-- arch/arc/include/asm/pgalloc.h | 70 ++++- arch/arc/include/asm/pgtable-bits-arcv2.h | 151 +++++++++++ arch/arc/include/asm/pgtable-levels.h | 179 ++++++++++++ arch/arc/include/asm/pgtable.h | 315 +--------------------- arch/arc/include/asm/processor.h | 2 +- arch/arc/include/asm/setup.h | 12 +- arch/arc/kernel/entry.S | 6 - arch/arc/mm/fault.c | 20 +- arch/arc/mm/ioremap.c | 3 +- arch/arc/mm/tlb.c | 71 ++--- arch/arc/mm/tlbex.S | 80 ++---- 18 files changed, 617 insertions(+), 579 deletions(-) create mode 100644 arch/arc/include/asm/mmu-arcv2.h create mode 100644 arch/arc/include/asm/pgtable-bits-arcv2.h create mode 100644 arch/arc/include/asm/pgtable-levels.h -- 2.25.1
