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

[Yinghai Lu]

On Tue, Dec 10, 2013 at 2:51 PM, H. Peter Anvin <hpa@xxxxxxxxx> wrote:
> 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?

[B, B+1), and [C, C+1) are not there.
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