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Message-ID: <20250306185124.3147510-1-rppt@kernel.org> Date: Thu, 6 Mar 2025 20:51:10 +0200 From: Mike Rapoport <rppt@...nel.org> To: Andrew Morton <akpm@...ux-foundation.org> Cc: Alexander Gordeev <agordeev@...ux.ibm.com>, Andreas Larsson <andreas@...sler.com>, Andy Lutomirski <luto@...nel.org>, Arnd Bergmann <arnd@...db.de>, Borislav Petkov <bp@...en8.de>, Brian Cain <bcain@...nel.org>, Catalin Marinas <catalin.marinas@....com>, Dave Hansen <dave.hansen@...ux.intel.com>, "David S. Miller" <davem@...emloft.net>, Dinh Nguyen <dinguyen@...nel.org>, Geert Uytterhoeven <geert@...ux-m68k.org>, Gerald Schaefer <gerald.schaefer@...ux.ibm.com>, Guo Ren <guoren@...nel.org>, Heiko Carstens <hca@...ux.ibm.com>, Helge Deller <deller@....de>, Huacai Chen <chenhuacai@...nel.org>, Ingo Molnar <mingo@...hat.com>, Jiaxun Yang <jiaxun.yang@...goat.com>, Johannes Berg <johannes@...solutions.net>, John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>, Madhavan Srinivasan <maddy@...ux.ibm.com>, Matt Turner <mattst88@...il.com>, Max Filippov <jcmvbkbc@...il.com>, Michael Ellerman <mpe@...erman.id.au>, Michal Simek <monstr@...str.eu>, Mike Rapoport <rppt@...nel.org>, Palmer Dabbelt <palmer@...belt.com>, Peter Zijlstra <peterz@...radead.org>, Richard Weinberger <richard@....at>, Russell King <linux@...linux.org.uk>, Stafford Horne <shorne@...il.com>, Thomas Bogendoerfer <tsbogend@...ha.franken.de>, Thomas Gleixner <tglx@...utronix.de>, Vasily Gorbik <gor@...ux.ibm.com>, Vineet Gupta <vgupta@...nel.org>, Will Deacon <will@...nel.org>, linux-alpha@...r.kernel.org, linux-kernel@...r.kernel.org, linux-snps-arc@...ts.infradead.org, linux-arm-kernel@...ts.infradead.org, linux-csky@...r.kernel.org, linux-hexagon@...r.kernel.org, loongarch@...ts.linux.dev, linux-m68k@...ts.linux-m68k.org, linux-mips@...r.kernel.org, linux-openrisc@...r.kernel.org, linux-parisc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org, linux-riscv@...ts.infradead.org, linux-s390@...r.kernel.org, linux-sh@...r.kernel.org, sparclinux@...r.kernel.org, linux-um@...ts.infradead.org, linux-arch@...r.kernel.org, linux-mm@...ck.org, x86@...nel.org Subject: [PATCH 00/13] arch, mm: reduce code duplication in mem_init() From: "Mike Rapoport (Microsoft)" <rppt@...nel.org> 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. 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/arm/mm/mmu.c | 2 - arch/arm/mm/nommu.c | 1 - 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 | 4 -- arch/m68k/mm/mcfmmu.c | 1 - arch/m68k/mm/motorola.c | 2 - arch/m68k/sun3/config.c | 1 - arch/microblaze/mm/init.c | 25 ----------- arch/mips/include/asm/mmzone.h | 2 - arch/mips/loongson64/numa.c | 7 ---- arch/mips/mm/init.c | 49 ++++------------------ 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 | 3 -- arch/powerpc/mm/mem.c | 18 +------- arch/riscv/mm/init.c | 5 +-- arch/s390/mm/init.c | 18 +------- 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 | 58 ++++++++++++++++++++++---- mm/nommu.c | 6 --- 53 files changed, 151 insertions(+), 618 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
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