Kernel panic due to page migration accessing memory holes

Russell King - ARM Linux linux at
Fri Feb 19 03:30:06 EST 2010

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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