Re: [PATCH] mm,x86: fix span coverage in e820_all_mapped()

[H. Peter Anvin]

On 12/10/2013 01:52 PM, Yinghai Lu wrote:
>>
>> What happens if it spans more than two regions?
> 
> [A, B), [B+1, C), [C+1, D) ?
> start in [A, B), and end in [C+1, D).
> 
> old code:
> first with [A, B), start set to B.
> then with [B+1, C), start still keep as B.
> then with [C+1, D), start still keep as B.
> at last still return 0...aka not_all_mapped.
> 
> old code is still right.
> 

Why not_all_mapped?

	-hpa

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