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    SubjectRe: Kernel panic due to page migration accessing memory holes
    On Thu, Feb 18, 2010 at 05:47:28PM -0800, Michael Bohan wrote:
    > I am actually using the pfn_valid implementation FLATMEM in
    > arch/arm/include/asm/memory.h. This one is very similar to the
    > asm-generic, and has no knowledge of the holes.

    Later kernels have a pfn_valid() which does have hole functionality.


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