Messages in this thread | | | Date | Wed, 28 Nov 2012 12:01:45 +0800 | From | Jiang Liu <> | Subject | Re: [PATCH v2 0/5] Add movablecore_map boot option |
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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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