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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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