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Re: [Xen-devel] [RFC][PATCH 13/13] hvmloader/e820: construct guest e820 table



>>> On 15.05.15 at 10:00, <tiejun.chen@xxxxxxxxx> wrote:
> On 2015/5/15 15:34, Jan Beulich wrote:
>>>>> On 15.05.15 at 09:11, <tiejun.chen@xxxxxxxxx> wrote:
>>> On 2015/5/15 14:56, Jan Beulich wrote:
>>>>>>> On 15.05.15 at 08:39, <tiejun.chen@xxxxxxxxx> wrote:
>>>>> On 2015/5/15 14:25, Jan Beulich wrote:
>>>>>>>>> On 15.05.15 at 08:11, <tiejun.chen@xxxxxxxxx> wrote:
>>>>>>> Even we may separate the
>>>>>>> low memory to construct memory_map.map[]...
>>>>>>
>>>>>> ???
>>>>>
>>>>> Sorry I just mean that the low memory is not represented with only one
>>>>> memory_map.map[] in some cases.
>>>>
>>>> That's correct.
>>>>
>>>
>>> So just lets keep that original BUG_ON()?
>>
>> In your previous reply you seemed to agree that the BUG_ON() is
>> becoming meaningless. Why do you now suggest to keep it then?
>>
> 
> Sorry just let me clear this.
> 
> We still need to check this,
> 
> (hvm_info->low_mem_pgend << PAGE_SHIFT) < (2u << 20)
> 
> Right? I agree the original is really less relevant as you said.

And I didn't ask you to drop it. All I asked it to amend it with another
BUG_ON() checking what the one above won't cover anymore.

Jan


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