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SubjectRe: Kernel panic due to page migration accessing memory holes
On Wed, Feb 17, 2010 at 04:45:54PM -0800, Michael Bohan wrote:
> I have encountered a kernel panic on the ARM/msm platform in the mm
> migration code on 2.6.29. My memory configuration has two discontiguous
> banks per our ATAG definition. These banks end up on addresses that
> are 1 MB aligned. I am using FLATMEM (not SPARSEMEM), but my
> understanding is that SPARSEMEM should not be necessary to support this
> configuration. Please correct me if I'm wrong.

Make sure you have ARCH_HAS_HOLES_MEMORYMODEL enabled.

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