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    SubjectRe: [PATCH v7 1/5] mm: page_alloc: remain memblock_next_valid_pfn() on arm and arm64
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    Thanks, Matthew


    On 4/5/2018 7:23 PM, Matthew Wilcox Wrote:
    > On Thu, Apr 05, 2018 at 01:04:34AM -0700, Jia He wrote:
    >> create mode 100644 include/linux/arm96_common.h
    > 'arm96_common'?! No. Just no.
    >
    > The right way to share common code is to create a header file (or use
    > an existing one), either in asm-generic or linux, with a #ifdef CONFIG_foo
    > block and then 'select foo' in the arm Kconfig files. That allows this
    > common code to be shared, maybe with powerpc or x86 or ... in the future.
    >
    ok
    How about include/asm-generic/early_pfn.h ?
    And could I use CONFIG_HAVE_ARCH_PFN_VALID and CONFIG_HAVE_MEMBLOCKin
    this case?
    Currently, arm/arm64 have memblock enable by default. When other arches
    implement
    their HAVE_MEMBLOCK and HAVE_ARCH_PFN_VALID, they can include this file?

    --
    Cheers,
    Jia

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