From: "Mike Rapoport (Microsoft)" <rppt@xxxxxxxxxx> Hi, Every architecture has implementation of mem_init() function and some even more than one. All these release free memory to the buddy allocator, most of them set high_memory to the end of directly addressable memory and many of them set max_mapnr for FLATMEM case. These patches pull the commonalities into the generic code and refactor some of the mem_init() implementations so that many of them can be just dropped. v2 changes: * don't use generic version for setting high_memory on architectures that use that varialble earlier than free_area_init() * use memblock_alloc_or_panig() to allocate zero pages on MIPS and s390 * fix alignment in allocation of zero pages on s390 * add Acked-by v1: https://lore.kernel.org/all/20250306185124.3147510-1-rppt@xxxxxxxxxx Mike Rapoport (Microsoft) (13): arm: mem_init: use memblock_phys_free() to free DMA memory on SA1111 csky: move setup_initrd() to setup.c hexagon: move initialization of init_mm.context init to paging_init() MIPS: consolidate mem_init() for NUMA machines MIPS: make setup_zero_pages() use memblock nios2: move pr_debug() about memory start and end to setup_arch() s390: make setup_zero_pages() use memblock xtensa: split out printing of virtual memory layout to a function arch, mm: set max_mapnr when allocating memory map for FLATMEM arch, mm: set high_memory in free_area_init() arch, mm: streamline HIGHMEM freeing arch, mm: introduce arch_mm_preinit arch, mm: make releasing of memory to page allocator more explicit arch/alpha/mm/init.c | 8 ---- arch/arc/mm/init.c | 25 +---------- arch/arm/mm/init.c | 43 +------------------ arch/arm64/mm/init.c | 12 +----- arch/csky/kernel/setup.c | 43 +++++++++++++++++++ arch/csky/mm/init.c | 67 ------------------------------ arch/hexagon/mm/init.c | 32 ++------------ arch/loongarch/kernel/numa.c | 6 --- arch/loongarch/mm/init.c | 8 ---- arch/m68k/mm/init.c | 2 - arch/microblaze/mm/init.c | 25 ----------- arch/mips/include/asm/mmzone.h | 2 - arch/mips/loongson64/numa.c | 7 ---- arch/mips/mm/init.c | 51 ++++------------------- arch/mips/sgi-ip27/ip27-memory.c | 9 ---- arch/nios2/kernel/setup.c | 3 +- arch/nios2/mm/init.c | 16 +------ arch/openrisc/mm/init.c | 6 --- arch/parisc/mm/init.c | 4 -- arch/powerpc/kernel/setup-common.c | 2 - arch/powerpc/mm/mem.c | 18 +------- arch/riscv/mm/init.c | 5 +-- arch/s390/mm/init.c | 20 +-------- arch/sh/mm/init.c | 10 ----- arch/sparc/mm/init_32.c | 31 +------------- arch/sparc/mm/init_64.c | 4 -- arch/um/include/shared/mem_user.h | 1 - arch/um/kernel/mem.c | 9 ++-- arch/um/kernel/physmem.c | 12 ------ arch/um/kernel/um_arch.c | 2 - arch/x86/include/asm/highmem.h | 3 -- arch/x86/include/asm/numa.h | 4 -- arch/x86/include/asm/numa_32.h | 13 ------ arch/x86/kernel/setup.c | 2 - arch/x86/mm/Makefile | 2 - arch/x86/mm/highmem_32.c | 34 --------------- arch/x86/mm/init_32.c | 41 ++---------------- arch/x86/mm/init_64.c | 7 ++-- arch/x86/mm/numa_32.c | 3 -- arch/xtensa/mm/init.c | 66 +++++++---------------------- include/asm-generic/memory_model.h | 5 ++- include/linux/memblock.h | 1 - include/linux/mm.h | 13 +----- mm/internal.h | 3 +- mm/memblock.c | 3 +- mm/memory.c | 16 ------- mm/mm_init.c | 65 +++++++++++++++++++++++++---- mm/nommu.c | 6 --- 48 files changed, 158 insertions(+), 612 deletions(-) delete mode 100644 arch/x86/include/asm/numa_32.h delete mode 100644 arch/x86/mm/highmem_32.c base-commit: d082ecbc71e9e0bf49883ee4afd435a77a5101b6 -- 2.47.2
