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

[Xishi Qiu]

On 2013/12/11 10:55, H. Peter Anvin wrote:

> On 12/10/2013 05:35 PM, Xishi Qiu wrote:
>>
>> In this case, old code is right, but I discuss in another one that
>> you wrote above.
>>
> 
> So is there a problem or not?  I have lost track...
> 

I think there is a problem.
e.g.
[start, end)=[8, 12), and [A, B)=[0, 10), [B, C)=[10,20),
then e820_all_mapped() will return 1, it spans two regions.

Thanks,
Xishi Qiu

> 	-hpa
> 
> 
> 
> 



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