Re: [PATCH v2 2/9] arm: mvebu: Align the internal registers virtualbase to support LPAE

[Gregory CLEMENT]

On 04/05/2013 10:50 PM, Arnd Bergmann wrote:
> On Friday 05 April 2013, Gregory CLEMENT wrote:
>> From: Lior Amsalem <alior@xxxxxxxxxxx>
>>
>> In order to be able to support he LPAE, the internal registers virtual
>> base must be aligned to 2MB.
>>
>> Signed-off-by: Lior Amsalem <alior@xxxxxxxxxxx>
>> Signed-off-by: Gregory CLEMENT <gregory.clement@xxxxxxxxxxxxxxxxxx>
> 
> This is a surprising limitation. Can you extend the above text to go into more
> detail where that alignment requirement comes from?
> 

The explanation I had was that in LPAE section size is 2MB, in earlyprintk we map
the internal registers and it must be section aligned.

> 	Arnd
> 
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-- 
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
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