On 2012-11-28 11:47, Tang Chen wrote:

On 11/27/2012 11:10 AM, wujianguo wrote:

quoted

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

quoted

Thanks,
Jianguo Wu

.

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