Re: [PATCH v2 08/13] xtensa: split out printing of virtual memory layout to a function

On Thu, Mar 13, 2025 at 4:52 PM Mike Rapoport wrote: > > From: "Mike Rapoport (Microsoft)" > > This will help with pulling out memblock_free_all() to the generic > code and reducing code duplication in arch::mem_init(). > > Signed-off-by: Mike Rapoport (Microsoft) > --- > arch/xtensa/mm/init.c

Re: [PATCH v2 00/13] arch, mm: reduce code duplication in mem_init()

On Thu, Mar 13, 2025 at 03:49:50PM +0200, Mike Rapoport wrote: > 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

Re: [PATCH v2 13/13] arch, mm: make releasing of memory to page allocator more explicit

On Thu, 13 Mar 2025 at 14:53, Mike Rapoport wrote: > From: "Mike Rapoport (Microsoft)" > > The point where the memory is released from memblock to the buddy allocator > is hidden inside arch-specific mem_init()s and the call to > memblock_free_all() is needlessly duplicated in every artiste cure

[PATCH 01/13] arm: mem_init: use memblock_phys_free() to free DMA memory on SA1111

From: "Mike Rapoport (Microsoft)" This will help to pull out memblock_free_all() to generic code. Signed-off-by: Mike Rapoport (Microsoft) --- arch/arm/mm/init.c | 8 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index 5345d21889

[PATCH v2 00/13] arch, mm: reduce code duplication in mem_init()

From: "Mike Rapoport (Microsoft)" 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

[PATCH v2 03/13] hexagon: move initialization of init_mm.context init to paging_init()

From: "Mike Rapoport (Microsoft)" This will help with pulling out memblock_free_all() to the generic code and reducing code duplication in arch::mem_init(). Signed-off-by: Mike Rapoport (Microsoft) --- arch/hexagon/mm/init.c | 14 ++ 1 file changed, 6 insertions(+), 8 deletions(-)

[PATCH v2 08/13] xtensa: split out printing of virtual memory layout to a function

From: "Mike Rapoport (Microsoft)" This will help with pulling out memblock_free_all() to the generic code and reducing code duplication in arch::mem_init(). Signed-off-by: Mike Rapoport (Microsoft) --- arch/xtensa/mm/init.c | 97 ++- 1 file changed, 50 i

[PATCH v2 05/13] MIPS: make setup_zero_pages() use memblock

From: "Mike Rapoport (Microsoft)" Allocating the zero pages from memblock is simpler because the memory is already reserved. This will also help with pulling out memblock_free_all() to the generic code and reducing code duplication in arch::mem_init(). Signed-off-by: Mike Rapoport (Microsoft)

[PATCH v2 09/13] arch, mm: set max_mapnr when allocating memory map for FLATMEM

From: "Mike Rapoport (Microsoft)" max_mapnr is essentially the size of the memory map for systems that use FLATMEM. There is no reason to calculate it in each and every architecture when it's anyway calculated in alloc_node_mem_map(). Drop setting of max_mapnr from architecture code and set it o

[PATCH v2 07/13] s390: make setup_zero_pages() use memblock

From: "Mike Rapoport (Microsoft)" Allocating the zero pages from memblock is simpler because the memory is already reserved. This will also help with pulling out memblock_free_all() to the generic code and reducing code duplication in arch::mem_init(). Acked-by: Heiko Carstens Signed-off-by: M

[PATCH v2 06/13] nios2: move pr_debug() about memory start and end to setup_arch()

From: "Mike Rapoport (Microsoft)" This will help with pulling out memblock_free_all() to the generic code and reducing code duplication in arch::mem_init(). Signed-off-by: Mike Rapoport (Microsoft) --- arch/nios2/kernel/setup.c | 2 ++ arch/nios2/mm/init.c | 2 -- 2 files changed, 2 inser

[PATCH v2 12/13] arch, mm: introduce arch_mm_preinit

From: "Mike Rapoport (Microsoft)" Currently, implementation of mem_init() in every architecture consists of one or more of the following: * initializations that must run before page allocator is active, for instance swiotlb_init() * a call to memblock_free_all() to release all the memory to th

[PATCH v2 13/13] arch, mm: make releasing of memory to page allocator more explicit

From: "Mike Rapoport (Microsoft)" The point where the memory is released from memblock to the buddy allocator is hidden inside arch-specific mem_init()s and the call to memblock_free_all() is needlessly duplicated in every artiste cure and after introduction of arch_mm_preinit() hook, mem_init()

[PATCH v2 11/13] arch, mm: streamline HIGHMEM freeing

From: "Mike Rapoport (Microsoft)" All architectures that support HIGHMEM have their code that frees high memory pages to the buddy allocator while __free_memory_core() is limited to freeing only low memory. There is no actual reason for that. The memory map is completely ready by the time memblo

[PATCH v2 10/13] arch, mm: set high_memory in free_area_init()

From: "Mike Rapoport (Microsoft)" high_memory defines upper bound on the directly mapped memory. This bound is defined by the beginning of ZONE_HIGHMEM when a system has high memory and by the end of memory otherwise. All this is known to generic memory management initialization code that can se

[PATCH v2 04/13] MIPS: consolidate mem_init() for NUMA machines

From: "Mike Rapoport (Microsoft)" Both MIPS systems that support numa (loongsoon3 and sgi-ip27) have identical mem_init() for NUMA case. Move that into arch/mips/mm/init.c and drop duplicate per-machine definitions. Signed-off-by: Mike Rapoport (Microsoft) --- arch/mips/loongson64/numa.c

[PATCH v2 02/13] csky: move setup_initrd() to setup.c

From: "Mike Rapoport (Microsoft)" Memory used by initrd should be reserved as soon as possible before there any memblock allocations that might overwrite that memory. This will also help with pulling out memblock_free_all() to the generic code and reducing code duplication in arch::mem_init().

[PATCH v2 01/13] arm: mem_init: use memblock_phys_free() to free DMA memory on SA1111

From: "Mike Rapoport (Microsoft)" This will help to pull out memblock_free_all() to generic code. Signed-off-by: Mike Rapoport (Microsoft) --- arch/arm/mm/init.c | 8 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index 5345d21889