x86: make sparsemem more available
With CONFIG_X86_PC, I can set CONFIG_SPARSEMEM=y. With CONFIG_X86_GENERICARCH, CONFIG_SPARSEMEM depends on CONFIG_NUMA. I'm using the patch below to enable sparsemem instead of flatmem. System booted and is running. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -1035,7 +1035,7 @@ config HAVE_ARCH_ALLOC_REMAP
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config ARCH_FLATMEM_ENABLE
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config ARCH_FLATMEM_ENABLE
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def_bool y
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def_bool y
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depends on X86_32 && ARCH_SELECT_MEMORY_MODEL && X86_PC && !NUMA
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depends on X86_32 && ARCH_SELECT_MEMORY_MODEL && !NUMA
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config ARCH_DISCONTIGMEM_ENABLE
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config ARCH_DISCONTIGMEM_ENABLE
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def_bool y
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def_bool y
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@ -1051,7 +1051,7 @@ config ARCH_SPARSEMEM_DEFAULT
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config ARCH_SPARSEMEM_ENABLE
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config ARCH_SPARSEMEM_ENABLE
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def_bool y
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def_bool y
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depends on X86_64 || NUMA || (EXPERIMENTAL && X86_PC)
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depends on X86_64 || NUMA || (EXPERIMENTAL && X86_PC) || X86_GENERICARCH
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select SPARSEMEM_STATIC if X86_32
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select SPARSEMEM_STATIC if X86_32
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select SPARSEMEM_VMEMMAP_ENABLE if X86_64
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select SPARSEMEM_VMEMMAP_ENABLE if X86_64
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