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    Subject[RFC PATCH 01/12] mm: add a new config to manage the code
    This patch introduces a new config called "CONFIG_ACPI_MIRROR_MEMORY", it is
    used to on/off the feature.

    Signed-off-by: Xishi Qiu <qiuxishi@huawei.com>
    ---
    mm/Kconfig | 8 ++++++++
    1 file changed, 8 insertions(+)

    diff --git a/mm/Kconfig b/mm/Kconfig
    index 390214d..4f2a726 100644
    --- a/mm/Kconfig
    +++ b/mm/Kconfig
    @@ -200,6 +200,14 @@ config MEMORY_HOTREMOVE
    depends on MEMORY_HOTPLUG && ARCH_ENABLE_MEMORY_HOTREMOVE
    depends on MIGRATION

    +config MEMORY_MIRROR
    + bool "Address range mirroring support"
    + depends on X86 && NUMA
    + default y
    + help
    + This feature depends on hardware and firmware support.
    + ACPI or EFI records the mirror info.
    +
    #
    # If we have space for more page flags then we can enable additional
    # optimizations and functionality.
    --
    2.0.0



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