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With 2M PMD-level mapping, we require 32 struct pages and a single vmemmap page can contain 1024 struct pages (PAGE_SIZE/sizeof(struct page)). Hence with 64K page size, we don't use vmemmap deduplication for PMD-level mapping. [aneesh.kumar@linux.ibm.com: ppc64: don't include radix headers if CONFIG_PPC_RADIX_MMU=n] Link: https://lkml.kernel.org/r/87zg3jw8km.fsf@linux.ibm.com Link: https://lkml.kernel.org/r/20230724190759.483013-12-aneesh.kumar@linux.ibm.com Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Joao Martins <joao.m.martins@oracle.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Muchun Song <muchun.song@linux.dev> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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49 lines
663 B
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.. SPDX-License-Identifier: GPL-2.0
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=======
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powerpc
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=======
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.. toctree::
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:maxdepth: 1
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associativity
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booting
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bootwrapper
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cpu_families
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cpu_features
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cxl
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cxlflash
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dawr-power9
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dexcr
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dscr
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eeh-pci-error-recovery
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elf_hwcaps
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elfnote
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firmware-assisted-dump
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hvcs
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imc
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isa-versions
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kaslr-booke32
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mpc52xx
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papr_hcalls
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pci_iov_resource_on_powernv
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pmu-ebb
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ptrace
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qe_firmware
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syscall64-abi
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transactional_memory
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ultravisor
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vas-api
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vcpudispatch_stats
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vmemmap_dedup
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features
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.. only:: subproject and html
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Indices
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=======
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* :ref:`genindex`
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