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Re: [Xen-devel] [PATCH 05/14] xen: balloon: use correct type for frame_list

On Fri, 5 Oct 2012, Ian Campbell wrote:
> In theory there might be a problem for a PV guest, but in the only case
> which matters:
>         arch/x86/include/asm/xen/interface.h:typedef unsigned long xen_pfn_t;
> and furthermore 32 bit PV guests are limited to 160G of MFN space (which
> is less than 2^32) for other reasons already.

Well, we should at least write that in a comment

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