Hello, This is a large series, mostly consisting of code movement. No new features are done in this series. The changes are done to accomodate the upcoming new memory model in future powerpc chips. The details of the new MMU model can be found at http://ibm.biz/power-isa3 (Needs registration). I am including a summary of the changes below. ISA 3.0 adds support for the radix tree style of MMU with full virtualization and related control mechanisms that manage its coexistence with the HPT. Radix-using operating systems will manage their own translation tables instead of relying on hcalls. Radix style MMU model requires us to do a 4 level page table with 64K and 4K page size. The table index size different page size is listed below PGD -> 13 bits PUD -> 9 (1G hugepage) PMD -> 9 (2M huge page) PTE -> 5 (for 64k), 9 (for 4k) We also require the page table to be in big endian format. The changes proposed in this series enables us to support both hash page table and radix tree style MMU using a single kernel with limited impact. The idea is to change core page table accessors to static inline functions and later hotpatch them to switch to hash or radix tree functions. For ex: static inline int pte_write(pte_t pte) { if (radix_enabled()) return rpte_write(pte); return hlpte_write(pte); } On boot we will hotpatch the code so as to avoid conditional operation. The other two major change propsed in this series is to switch hash linux page table to a 4 level table in big endian format. This is done so that functions like pte_val(), pud_populate() doesn't need hotpatching and thereby helps in limiting runtime impact of the changes. I didn't included the radix related changes in this series. You can find them at https://github.com/kvaneesh/linux/commits/radix-mmu-v1 Changes from V1: * move patches adding helpers to the next series -aneesh Aneesh Kumar K.V (29): powerpc/mm: add _PAGE_HASHPTE similar to 4K hash powerpc/mm: Split pgtable types to separate header powerpc/mm: Switch book3s 64 with 64K page size to 4 level page table powerpc/mm: Copy pgalloc (part 1) powerpc/mm: Copy pgalloc (part 2) powerpc/mm: Copy pgalloc (part 3) mm: Make vm_get_page_prot arch specific. mm: Some arch may want to use HPAGE_PMD related values as variables powerpc/mm: Hugetlbfs is book3s_64 and fsl_book3e (32 or 64) powerpc/mm: free_hugepd_range split to hash and nonhash powerpc/mm: Use helper instead of opencoding powerpc/mm: Move hash64 specific defintions to seperate header powerpc/mm: Move swap related definition ot hash64 header powerpc/mm: Move hash page table related functions to pgtable-hash64.c powerpc/mm: Rename hash specific page table bits (_PAGE* -> H_PAGE*) powerpc/mm: Use flush_tlb_page in ptep_clear_flush_young powerpc/mm: THP is only available on hash64 as of now powerpc/mm: Use generic version of pmdp_clear_flush_young powerpc/mm: Create a new headers for tlbflush for hash64 powerpc/mm: Hash linux abstraction for page table accessors powerpc/mm: Hash linux abstraction for functions in pgtable-hash.c powerpc/mm: Hash linux abstraction for mmu context handling code powerpc/mm: Move hash related mmu-*.h headers to book3s/ powerpc/mm: Hash linux abstractions for early init routines powerpc/mm: Hash linux abstraction for THP powerpc/mm: Hash linux abstraction for HugeTLB powerpc/mm: Hash linux abstraction for page table allocator powerpc/mm: Hash linux abstraction for tlbflush routines powerpc/mm: Hash linux abstraction for pte swap encoding arch/arm/include/asm/pgtable-3level.h | 8 + arch/arm64/include/asm/pgtable.h | 7 + arch/mips/include/asm/pgtable.h | 8 + arch/powerpc/Kconfig | 1 + .../asm/{mmu-hash32.h => book3s/32/mmu-hash.h} | 6 +- arch/powerpc/include/asm/book3s/32/pgalloc.h | 109 ++++ arch/powerpc/include/asm/book3s/32/pgtable.h | 13 + arch/powerpc/include/asm/book3s/64/hash-4k.h | 103 ++- arch/powerpc/include/asm/book3s/64/hash-64k.h | 165 ++--- arch/powerpc/include/asm/book3s/64/hash.h | 525 ++++++++------- .../asm/{mmu-hash64.h => book3s/64/mmu-hash.h} | 67 +- arch/powerpc/include/asm/book3s/64/mmu.h | 92 +++ .../include/asm/book3s/64/pgalloc-hash-4k.h | 92 +++ .../include/asm/book3s/64/pgalloc-hash-64k.h | 48 ++ arch/powerpc/include/asm/book3s/64/pgalloc-hash.h | 82 +++ arch/powerpc/include/asm/book3s/64/pgalloc.h | 158 +++++ arch/powerpc/include/asm/book3s/64/pgtable.h | 713 ++++++++++++++++++--- arch/powerpc/include/asm/book3s/64/tlbflush-hash.h | 96 +++ arch/powerpc/include/asm/book3s/64/tlbflush.h | 56 ++ arch/powerpc/include/asm/book3s/pgalloc.h | 19 + arch/powerpc/include/asm/book3s/pgtable.h | 4 - arch/powerpc/include/asm/hugetlb.h | 5 +- arch/powerpc/include/asm/kvm_book3s_64.h | 10 +- arch/powerpc/include/asm/mman.h | 6 - arch/powerpc/include/asm/mmu.h | 27 +- arch/powerpc/include/asm/mmu_context.h | 63 +- .../asm/{pgalloc-32.h => nohash/32/pgalloc.h} | 0 .../asm/{pgalloc-64.h => nohash/64/pgalloc.h} | 24 +- arch/powerpc/include/asm/nohash/64/pgtable.h | 4 + arch/powerpc/include/asm/nohash/pgalloc.h | 30 + arch/powerpc/include/asm/nohash/pgtable.h | 11 + arch/powerpc/include/asm/page.h | 104 +-- arch/powerpc/include/asm/page_64.h | 2 +- arch/powerpc/include/asm/pgalloc.h | 19 +- arch/powerpc/include/asm/pgtable-types.h | 103 +++ arch/powerpc/include/asm/pgtable.h | 13 - arch/powerpc/include/asm/pte-common.h | 3 + arch/powerpc/include/asm/tlbflush.h | 92 +-- arch/powerpc/kernel/asm-offsets.c | 9 +- arch/powerpc/kernel/idle_power7.S | 2 +- arch/powerpc/kernel/pci_64.c | 3 +- arch/powerpc/kernel/swsusp.c | 2 +- arch/powerpc/kvm/book3s_32_mmu_host.c | 2 +- arch/powerpc/kvm/book3s_64_mmu.c | 2 +- arch/powerpc/kvm/book3s_64_mmu_host.c | 4 +- arch/powerpc/kvm/book3s_64_mmu_hv.c | 2 +- arch/powerpc/kvm/book3s_64_vio.c | 2 +- arch/powerpc/kvm/book3s_64_vio_hv.c | 2 +- arch/powerpc/kvm/book3s_hv_rm_mmu.c | 2 +- arch/powerpc/kvm/book3s_hv_rmhandlers.S | 2 +- arch/powerpc/mm/Makefile | 3 +- arch/powerpc/mm/copro_fault.c | 8 +- arch/powerpc/mm/hash64_4k.c | 25 +- arch/powerpc/mm/hash64_64k.c | 61 +- arch/powerpc/mm/hash_native_64.c | 10 +- arch/powerpc/mm/hash_utils_64.c | 118 +++- arch/powerpc/mm/hugepage-hash64.c | 22 +- arch/powerpc/mm/hugetlbpage-book3e.c | 480 ++++++++++++++ arch/powerpc/mm/hugetlbpage-hash64.c | 296 ++++++++- arch/powerpc/mm/hugetlbpage.c | 603 +---------------- arch/powerpc/mm/init_64.c | 102 +-- arch/powerpc/mm/mem.c | 29 +- arch/powerpc/mm/mmu_context_hash64.c | 20 +- arch/powerpc/mm/mmu_context_nohash.c | 3 +- arch/powerpc/mm/mmu_decl.h | 4 - arch/powerpc/mm/pgtable-book3e.c | 163 +++++ arch/powerpc/mm/pgtable-hash64.c | 615 ++++++++++++++++++ arch/powerpc/mm/pgtable.c | 9 + arch/powerpc/mm/pgtable_64.c | 513 ++------------- arch/powerpc/mm/ppc_mmu_32.c | 30 + arch/powerpc/mm/slb.c | 9 +- arch/powerpc/mm/slb_low.S | 4 +- arch/powerpc/mm/slice.c | 2 +- arch/powerpc/mm/tlb_hash64.c | 10 +- arch/powerpc/platforms/cell/spu_base.c | 6 +- arch/powerpc/platforms/cell/spufs/fault.c | 4 +- arch/powerpc/platforms/ps3/spu.c | 2 +- arch/powerpc/platforms/pseries/lpar.c | 12 +- arch/s390/include/asm/pgtable.h | 8 + arch/sparc/include/asm/pgtable_64.h | 7 + arch/tile/include/asm/pgtable.h | 9 + arch/x86/include/asm/pgtable.h | 8 + drivers/char/agp/uninorth-agp.c | 9 +- drivers/cpufreq/pmac32-cpufreq.c | 2 +- drivers/macintosh/via-pmu.c | 4 +- drivers/misc/cxl/fault.c | 6 +- include/linux/huge_mm.h | 3 - include/linux/mman.h | 4 - mm/huge_memory.c | 8 +- mm/mmap.c | 9 +- 90 files changed, 4013 insertions(+), 2149 deletions(-) rename arch/powerpc/include/asm/{mmu-hash32.h => book3s/32/mmu-hash.h} (94%) create mode 100644 arch/powerpc/include/asm/book3s/32/pgalloc.h rename arch/powerpc/include/asm/{mmu-hash64.h => book3s/64/mmu-hash.h} (90%) create mode 100644 arch/powerpc/include/asm/book3s/64/mmu.h create mode 100644 arch/powerpc/include/asm/book3s/64/pgalloc-hash-4k.h create mode 100644 arch/powerpc/include/asm/book3s/64/pgalloc-hash-64k.h create mode 100644 arch/powerpc/include/asm/book3s/64/pgalloc-hash.h create mode 100644 arch/powerpc/include/asm/book3s/64/pgalloc.h create mode 100644 arch/powerpc/include/asm/book3s/64/tlbflush-hash.h create mode 100644 arch/powerpc/include/asm/book3s/64/tlbflush.h create mode 100644 arch/powerpc/include/asm/book3s/pgalloc.h rename arch/powerpc/include/asm/{pgalloc-32.h => nohash/32/pgalloc.h} (100%) rename arch/powerpc/include/asm/{pgalloc-64.h => nohash/64/pgalloc.h} (91%) create mode 100644 arch/powerpc/include/asm/nohash/pgalloc.h create mode 100644 arch/powerpc/include/asm/pgtable-types.h create mode 100644 arch/powerpc/mm/pgtable-book3e.c create mode 100644 arch/powerpc/mm/pgtable-hash64.c -- 2.5.0 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. 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