x86/Kconfig: Deprecate DISCONTIGMEM support for 32-bit x86
Mel Gorman says: "32-bit NUMA systems should be non-existent in practice. The last NUMA system I'm aware of that was both NUMA and 32-bit only died somewhere between 2004 and 2007. If someone is running a 64-bit capable system in 32-bit mode with NUMA, they really are just punishing themselves for fun." Mark DISCONTIGMEM broken for now as suggested by Christoph Hellwig, and (hopefully) remove it in a couple of releases. Suggested-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: Mel Gorman <mgorman@techsingularity.net> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Matthew Wilcox <willy@infradead.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@surriel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-mm@kvack.org Link: http://lkml.kernel.org/r/1556112252-9339-3-git-send-email-rppt@linux.ibm.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
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@ -1606,8 +1606,9 @@ config ARCH_FLATMEM_ENABLE
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depends on X86_32 && !NUMA
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config ARCH_DISCONTIGMEM_ENABLE
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def_bool y
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def_bool n
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depends on NUMA && X86_32
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depends on BROKEN
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config ARCH_SPARSEMEM_ENABLE
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def_bool y
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