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    Subject[PATCH 5.5 030/119] riscv: Force flat memory model with no-mmu
    Date
    From: Damien Le Moal <damien.lemoal@wdc.com>

    [ Upstream commit aa2734202acc506d09c8e641db4da161f902df27 ]

    Compilation errors trigger if ARCH_SPARSEMEM_ENABLE is enabled for
    a nommu kernel. Since the sparsemem model does not make sense anyway
    for the nommu case, do not allow selecting this option to always use
    the flatmem model.

    Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
    Reviewed-by: Anup Patel <anup@brainfault.org>
    Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
    Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    arch/riscv/Kconfig | 1 +
    1 file changed, 1 insertion(+)

    diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
    index fa7dc03459e7f..1be11c23fa335 100644
    --- a/arch/riscv/Kconfig
    +++ b/arch/riscv/Kconfig
    @@ -121,6 +121,7 @@ config ARCH_FLATMEM_ENABLE

    config ARCH_SPARSEMEM_ENABLE
    def_bool y
    + depends on MMU
    select SPARSEMEM_VMEMMAP_ENABLE

    config ARCH_SELECT_MEMORY_MODEL
    --
    2.20.1


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