This patchset implements sparsemem on RISC-V. The first couple patches from the previous version have been merged into v4.20 and the ARM patches have been sent separately to the ARM maintainers. These are the RISC-V patches only.
This is the first small step in supporting P2P on RISC-V. -- Changes in v4: * Rebased onto v5.0-rc1 * Changed the SECTION_SIZE_BITS to 27, per Nick Kossifidis Changes in v3 (only sent the common patches): * Rebased on v4.20-rc1 * Minor fixups * Collected Ack from Will Deacon 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 (2): sh: mm: make use of new memblocks_present() helper RISC-V: Implement sparsemem 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 +------ 6 files changed, 63 insertions(+), 11 deletions(-) create mode 100644 arch/riscv/include/asm/sparsemem.h -- 2.19.0
