Re: [Xen-devel] [PATCH RFC 2/2] xen/arm: patches for 32bit page shift operations

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

On Tue, 2013-09-17 at 15:30 +0000, ChanJu Park wrote:
> Current some 32bit variables make errors when large physical memory accessed. 
> (more than 4GB)
> For example, left page shifting for the 32bit âidxâ or âgpfnâ variable cuts 
> the highest value after this operation.
> To resolve this, following cast can be applied as a intermediate method.
>    (paddr_t)idx << PAGE_SHIFT,  (paddr_t)gpfn << PAGE_SHIFT

I think we want to use the pfn_to_paddr macro for all of these rather
than open coding the cast + shift and/or changing the types.

Ian.


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