Re: [patch] mm: sparsemem memory_present() memory corruption fix

[Christoph Lameter]

On Wed, 16 Apr 2008, Ingo Molnar wrote:

> if a !PAE x86 kernel is booted on a 32-bit system with more than
> 4GB of RAM, then we call memory_present() with a start/end that
> goes outside the scope of MAX_PHYSMEM_BITS.

Well okay this fixes it but is this the right fix? The arch should not 
call memory_present() with an invalid pfn.
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