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    Subject[PATCH v2 09/22] arm64: Convert to generic memblock for numa-info
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    Drop the existing memory_add_physaddr_to_nid() stub and add support for
    phys_to_target_node() by selecting the generic CONFIG_MEMBLOCK_NUMAINFO
    mechanism for querying firmware numa data at runtime.

    Cc: Mike Rapoport <rppt@linux.ibm.com>
    Cc: Jia He <justin.he@arm.com>
    Cc: Will Deacon <will@kernel.org>
    Cc: David Hildenbrand <david@redhat.com>
    Cc: Catalin Marinas <catalin.marinas@arm.com>
    Cc: Andrew Morton <akpm@linux-foundation.org>
    Signed-off-by: Dan Williams <dan.j.williams@intel.com>
    ---
    arch/arm64/Kconfig | 1 +
    arch/arm64/mm/numa.c | 10 ----------
    2 files changed, 1 insertion(+), 10 deletions(-)

    diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
    index a4a094bedcb2..cfef26ce8c0c 100644
    --- a/arch/arm64/Kconfig
    +++ b/arch/arm64/Kconfig
    @@ -65,6 +65,7 @@ config ARM64
    select ARCH_INLINE_SPIN_UNLOCK_IRQ if !PREEMPTION
    select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE if !PREEMPTION
    select ARCH_KEEP_MEMBLOCK
    + select MEMBLOCK_NUMA_INFO
    select ARCH_USE_CMPXCHG_LOCKREF
    select ARCH_USE_GNU_PROPERTY
    select ARCH_USE_QUEUED_RWLOCKS
    diff --git a/arch/arm64/mm/numa.c b/arch/arm64/mm/numa.c
    index aafcee3e3f7e..73f8b49d485c 100644
    --- a/arch/arm64/mm/numa.c
    +++ b/arch/arm64/mm/numa.c
    @@ -461,13 +461,3 @@ void __init arm64_numa_init(void)

    numa_init(dummy_numa_init);
    }
    -
    -/*
    - * We hope that we will be hotplugging memory on nodes we already know about,
    - * such that acpi_get_node() succeeds and we never fall back to this...
    - */
    -int memory_add_physaddr_to_nid(u64 addr)
    -{
    - pr_warn("Unknown node for memory at 0x%llx, assuming node 0\n", addr);
    - return 0;
    -}
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