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    Subject[PATCH v2 0/6] sparsemem support for RISC-V
    This patchset implements sparsemem on RISC-V. The first few patches
    move some code in existing architectures into common helpers
    so they can be used by the new RISC-V implementation. The final
    patch actually adds sparsmem support to RISC-V.

    This is the first small step in supporting P2P on RISC-V.

    --

    Changes in v2:

    * Rebase on v4.19-rc8
    * Move the STRUCT_PAGE_MAX_SHIFT define into a common header (near
    the definition of struct page). As suggested by Christoph.
    * Clean up the unnecessary nid variable in the memblocks_present()
    function, per Christoph.
    * Collected tags from Palmer and Catalin.

    --
    Logan Gunthorpe (6):
    mm: Introduce common STRUCT_PAGE_MAX_SHIFT define
    mm/sparse: add common helper to mark all memblocks present
    ARM: mm: make use of new memblocks_present() helper
    arm64: mm: make use of new memblocks_present() helper
    sh: mm: make use of new memblocks_present() helper
    RISC-V: Implement sparsemem

    arch/arm/mm/init.c | 17 +----------------
    arch/arm64/include/asm/memory.h | 9 ---------
    arch/arm64/mm/init.c | 28 +---------------------------
    arch/riscv/Kconfig | 23 +++++++++++++++++++++++
    arch/riscv/include/asm/pgtable.h | 21 +++++++++++++++++----
    arch/riscv/include/asm/sparsemem.h | 11 +++++++++++
    arch/riscv/kernel/setup.c | 4 +++-
    arch/riscv/mm/init.c | 8 ++++++++
    arch/sh/mm/init.c | 7 +------
    include/asm-generic/fixmap.h | 1 +
    include/linux/mm_types.h | 5 +++++
    include/linux/mmzone.h | 6 ++++++
    mm/sparse.c | 14 ++++++++++++++
    13 files changed, 91 insertions(+), 63 deletions(-)
    create mode 100644 arch/riscv/include/asm/sparsemem.h

    --
    2.19.0

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