Re: [PATCH 2/4] x86: ioremap: fix physical address check

[Maciej W. Rozycki]

On Mon, 14 Jun 2010, Kenji Kaneshige wrote:

> - Architectural limit of physical address in x86 32-bit mode is 40-bit
>   (depnds on processor version).

 According to documentation I happen to have handy this limit is actually 
52 bits (and space is currently available in the data structures used for 
a possible future extension up to 63 bits).

  Maciej
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