kernel.git/arch/microblaze/mm/init.c, branch linux-5.10.y

microblaze: don't treat zero reserved memory regions as error

2024-10-17T13:07:35Z

[ Upstream commit 0075df288dd8a7abfe03b3766176c393063591dd ] Before commit 721f4a6526da ("mm/memblock: remove empty dummy entry") the check for non-zero of memblock.reserved.cnt in mmu_init() would always be true either because memblock.reserved.cnt is initialized to 1 or because there were memory reservations earlier. The removal of dummy empty entry in memblock caused this check to fail because now memblock.reserved.cnt is initialized to 0. Remove the check for non-zero of memblock.reserved.cnt because it's perfectly fine to have an empty memblock.reserved array that early in boot. Reported-by: Guenter Roeck Signed-off-by: Mike Rapoport Reviewed-by: Wei Yang Tested-by: Guenter Roeck Link: https://lore.kernel.org/r/20240729053327.4091459-1-rppt@kernel.org Signed-off-by: Guenter Roeck Signed-off-by: Sasha Levin

Merge tag 'dma-mapping-5.10' of git://git.infradead.org/users/hch/dma-mapping

2020-10-15T21:43:29Z

Pull dma-mapping updates from Christoph Hellwig: - rework the non-coherent DMA allocator - move private definitions out of - lower CMA_ALIGNMENT (Paul Cercueil) - remove the omap1 dma address translation in favor of the common code - make dma-direct aware of multiple dma offset ranges (Jim Quinlan) - support per-node DMA CMA areas (Barry Song) - increase the default seg boundary limit (Nicolin Chen) - misc fixes (Robin Murphy, Thomas Tai, Xu Wang) - various cleanups * tag 'dma-mapping-5.10' of git://git.infradead.org/users/hch/dma-mapping: (63 commits) ARM/ixp4xx: add a missing include of dma-map-ops.h dma-direct: simplify the DMA_ATTR_NO_KERNEL_MAPPING handling dma-direct: factor out a dma_direct_alloc_from_pool helper dma-direct check for highmem pages in dma_direct_alloc_pages dma-mapping: merge into dma-mapping: move large parts of to kernel/dma dma-mapping: move dma-debug.h to kernel/dma/ dma-mapping: remove dma-mapping: merge into dma-contiguous: remove dma_contiguous_set_default dma-contiguous: remove dev_set_cma_area dma-contiguous: remove dma_declare_contiguous dma-mapping: split cma: decrease CMA_ALIGNMENT lower limit to 2 firewire-ohci: use dma_alloc_pages dma-iommu: implement ->alloc_noncoherent dma-mapping: add new {alloc,free}_noncoherent dma_map_ops methods dma-mapping: add a new dma_alloc_pages API dma-mapping: remove dma_cache_sync 53c700: convert to dma_alloc_noncoherent ...

arch, drivers: replace for_each_membock() with for_each_mem_range()

2020-10-14T01:38:35Z

There are several occurrences of the following pattern: for_each_memblock(memory, reg) { start = __pfn_to_phys(memblock_region_memory_base_pfn(reg); end = __pfn_to_phys(memblock_region_memory_end_pfn(reg)); /* do something with start and end */ } Using for_each_mem_range() iterator is more appropriate in such cases and allows simpler and cleaner code. [akpm@linux-foundation.org: fix arch/arm/mm/pmsa-v7.c build] [rppt@linux.ibm.com: mips: fix cavium-octeon build caused by memblock refactoring] Link: http://lkml.kernel.org/r/20200827124549.GD167163@linux.ibm.com Signed-off-by: Mike Rapoport Signed-off-by: Andrew Morton Cc: Andy Lutomirski Cc: Baoquan He Cc: Benjamin Herrenschmidt Cc: Borislav Petkov Cc: Catalin Marinas Cc: Christoph Hellwig Cc: Daniel Axtens Cc: Dave Hansen Cc: Emil Renner Berthing Cc: Hari Bathini Cc: Ingo Molnar Cc: Ingo Molnar Cc: Jonathan Cameron Cc: Marek Szyprowski Cc: Max Filippov Cc: Michael Ellerman Cc: Michal Simek Cc: Miguel Ojeda Cc: Palmer Dabbelt Cc: Paul Mackerras Cc: Paul Walmsley Cc: Peter Zijlstra Cc: Russell King Cc: Stafford Horne Cc: Thomas Bogendoerfer Cc: Thomas Gleixner Cc: Will Deacon Cc: Yoshinori Sato Link: https://lkml.kernel.org/r/20200818151634.14343-13-rppt@kernel.org Signed-off-by: Linus Torvalds

mircoblaze: drop unneeded NUMA and sparsemem initializations

2020-10-14T01:38:35Z

microblaze does not support neither NUMA not SPARSMEM, so there is no point to call memblock_set_node() and sparse_memory_present_with_active_regions() functions during microblaze memory initialization. Remove these calls and the surrounding code. Signed-off-by: Mike Rapoport Signed-off-by: Andrew Morton Cc: Andy Lutomirski Cc: Baoquan He Cc: Benjamin Herrenschmidt Cc: Borislav Petkov Cc: Catalin Marinas Cc: Christoph Hellwig Cc: Daniel Axtens Cc: Dave Hansen Cc: Emil Renner Berthing Cc: Hari Bathini Cc: Ingo Molnar Cc: Ingo Molnar Cc: Jonathan Cameron Cc: Marek Szyprowski Cc: Max Filippov Cc: Michael Ellerman Cc: Michal Simek Cc: Miguel Ojeda Cc: Palmer Dabbelt Cc: Paul Mackerras Cc: Paul Walmsley Cc: Peter Zijlstra Cc: Russell King Cc: Stafford Horne Cc: Thomas Bogendoerfer Cc: Thomas Gleixner Cc: Will Deacon Cc: Yoshinori Sato Link: https://lkml.kernel.org/r/20200818151634.14343-8-rppt@kernel.org Signed-off-by: Linus Torvalds

dma-mapping: merge into

2020-10-06T05:07:04Z

Merge dma-contiguous.h into dma-map-ops.h, after removing the comment describing the contiguous allocator into kernel/dma/contigous.c. Signed-off-by: Christoph Hellwig

microblaze: fix min_low_pfn/max_low_pfn build errors

2020-08-31T16:52:50Z

Fix min_low_pfn/max_low_pfn build errors for arch/microblaze/: (e.g.) ERROR: "min_low_pfn" [drivers/rpmsg/virtio_rpmsg_bus.ko] undefined! ERROR: "min_low_pfn" [drivers/hwtracing/intel_th/intel_th_msu_sink.ko] undefined! ERROR: "min_low_pfn" [drivers/hwtracing/intel_th/intel_th_msu.ko] undefined! ERROR: "min_low_pfn" [drivers/mmc/core/mmc_core.ko] undefined! ERROR: "min_low_pfn" [drivers/md/dm-crypt.ko] undefined! ERROR: "min_low_pfn" [drivers/net/wireless/ath/ath6kl/ath6kl_sdio.ko] undefined! ERROR: "min_low_pfn" [crypto/tcrypt.ko] undefined! ERROR: "min_low_pfn" [crypto/asymmetric_keys/asym_tpm.ko] undefined! Mike had/has an alternate patch for Microblaze: https://lore.kernel.org/lkml/20200630111519.GA1951986@linux.ibm.com/ David suggested just exporting min_low_pfn & max_low_pfn in mm/memblock.c: https://lore.kernel.org/lkml/alpine.DEB.2.22.394.2006291911220.1118534@chino.kir.corp.google.com/ Reported-by: kernel test robot Signed-off-by: Randy Dunlap Acked-by: Michal Simek Acked-by: David Rientjes Cc: linux-mm@kvack.org Cc: Andrew Morton Cc: David Rientjes Cc: Mike Rapoport Cc: Michal Simek Cc: Michal Simek Signed-off-by: Mike Rapoport

mm/sparse: cleanup the code surrounding memory_present()

2020-08-07T18:33:27Z

After removal of CONFIG_HAVE_MEMBLOCK_NODE_MAP we have two equivalent functions that call memory_present() for each region in memblock.memory: sparse_memory_present_with_active_regions() and membocks_present(). Moreover, all architectures have a call to either of these functions preceding the call to sparse_init() and in the most cases they are called one after the other. Mark the regions from memblock.memory as present during sparce_init() by making sparse_init() call memblocks_present(), make memblocks_present() and memory_present() functions static and remove redundant sparse_memory_present_with_active_regions() function. Also remove no longer required HAVE_MEMORY_PRESENT configuration option. Signed-off-by: Mike Rapoport Signed-off-by: Andrew Morton Link: http://lkml.kernel.org/r/20200712083130.22919-1-rppt@kernel.org Signed-off-by: Linus Torvalds

mm: pgtable: add shortcuts for accessing kernel PMD and PTE

2020-06-09T16:39:13Z

The powerpc 32-bit implementation of pgtable has nice shortcuts for accessing kernel PMD and PTE for a given virtual address. Make these helpers available for all architectures. [rppt@linux.ibm.com: microblaze: fix page table traversal in setup_rt_frame()] Link: http://lkml.kernel.org/r/20200518191511.GD1118872@kernel.org [akpm@linux-foundation.org: s/pmd_ptr_k/pmd_off_k/ in various powerpc places] Signed-off-by: Mike Rapoport Signed-off-by: Andrew Morton Cc: Arnd Bergmann Cc: Borislav Petkov Cc: Brian Cain Cc: Catalin Marinas Cc: Chris Zankel Cc: "David S. Miller" Cc: Geert Uytterhoeven Cc: Greentime Hu Cc: Greg Ungerer Cc: Guan Xuetao Cc: Guo Ren Cc: Heiko Carstens Cc: Helge Deller Cc: Ingo Molnar Cc: Ley Foon Tan Cc: Mark Salter Cc: Matthew Wilcox Cc: Matt Turner Cc: Max Filippov Cc: Michael Ellerman Cc: Michal Simek Cc: Nick Hu Cc: Paul Walmsley Cc: Richard Weinberger Cc: Rich Felker Cc: Russell King Cc: Stafford Horne Cc: Thomas Bogendoerfer Cc: Thomas Gleixner Cc: Tony Luck Cc: Vincent Chen Cc: Vineet Gupta Cc: Will Deacon Cc: Yoshinori Sato Link: http://lkml.kernel.org/r/20200514170327.31389-9-rppt@kernel.org Signed-off-by: Linus Torvalds

arch/kmap: ensure kmap_prot visibility

2020-06-05T02:06:22Z

We want to support kmap_atomic_prot() on all architectures and it makes sense to define kmap_atomic() to use the default kmap_prot. So we ensure all arch's have a globally available kmap_prot either as a define or exported symbol. Signed-off-by: Ira Weiny Signed-off-by: Andrew Morton Reviewed-by: Christoph Hellwig Cc: Al Viro Cc: Andy Lutomirski Cc: Benjamin Herrenschmidt Cc: Borislav Petkov Cc: Christian König Cc: Chris Zankel Cc: Daniel Vetter Cc: Dan Williams Cc: Dave Hansen Cc: "David S. Miller" Cc: Helge Deller Cc: "H. Peter Anvin" Cc: Ingo Molnar Cc: "James E.J. Bottomley" Cc: Max Filippov Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Thomas Bogendoerfer Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/20200507150004.1423069-9-ira.weiny@intel.com Signed-off-by: Linus Torvalds

mm: use free_area_init() instead of free_area_init_nodes()

2020-06-04T03:09:43Z

free_area_init() has effectively became a wrapper for free_area_init_nodes() and there is no point of keeping it. Still free_area_init() name is shorter and more general as it does not imply necessity to initialize multiple nodes. Rename free_area_init_nodes() to free_area_init(), update the callers and drop old version of free_area_init(). Signed-off-by: Mike Rapoport Signed-off-by: Andrew Morton Tested-by: Hoan Tran [arm64] Reviewed-by: Baoquan He Acked-by: Catalin Marinas Cc: Brian Cain Cc: "David S. Miller" Cc: Geert Uytterhoeven Cc: Greentime Hu Cc: Greg Ungerer Cc: Guan Xuetao Cc: Guo Ren Cc: Heiko Carstens Cc: Helge Deller Cc: "James E.J. Bottomley" Cc: Jonathan Corbet Cc: Ley Foon Tan Cc: Mark Salter Cc: Matt Turner Cc: Max Filippov Cc: Michael Ellerman Cc: Michal Hocko Cc: Michal Simek Cc: Nick Hu Cc: Paul Walmsley Cc: Richard Weinberger Cc: Rich Felker Cc: Russell King Cc: Stafford Horne Cc: Thomas Bogendoerfer Cc: Tony Luck Cc: Vineet Gupta Cc: Yoshinori Sato Link: http://lkml.kernel.org/r/20200412194859.12663-6-rppt@kernel.org Signed-off-by: Linus Torvalds