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SubjectRe: [PATCH v2 0/5] Add movablecore_map boot option
On 2012-11-28 11:47, Tang Chen wrote:
> On 11/27/2012 11:10 AM, wujianguo wrote:
>>
>> Hi Tang,
>> DMA address can't be set as movable, if some one boot kernel with
>> movablecore_map=4G@0xa00000 or other memory region that contains DMA address,
>> system maybe boot failed. Should this case be handled or mentioned
>> in the change log and kernel-parameters.txt?
>
> Hi Wu,
>
> I think we can use MAX_DMA_PFN and MAX_DMA32_PFN to prevent setting DMA
> address as movable. Just ignore the address lower than them, and set
> the rest as movable. How do you think ?
>
> And, since we cannot figure out the minimum of memory kernel needs, I
> think for now, we can just add some warning into kernel-parameters.txt.
>
> Thanks. :)
On one other OS, there is a mechanism to dynamically convert pages from
movable zones into normal zones.

Regards!
Gerry

>
>>
>> Thanks,
>> Jianguo Wu
>>
>
> .
>




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