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Date: Wed, 26 Aug 2009 12:10:24 -0400 (EDT)
From: Christoph Lameter <cl@linux-foundation.org>
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To: Nitin Gupta <ngupta@vflare.org>
cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>,
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Subject: Re: [PATCH 1/4] compcache: xvmalloc memory allocator
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On Wed, 26 Aug 2009, Nitin Gupta wrote:

> I went crazy. I meant 40 bits for PFN -- not 48. This 40-bit PFN should be
> sufficient for all archs. For archs where 40 + PAGE_SHIFT < MAX_PHYSMEM_BITS
> ramzswap will just issue a compiler error.

How about restricting the xvmalloc memory allocator to 32 bit? If I
understand correctly xvmalloc main use in on 32 bit in order to be
able to use HIGHMEM?