[RFC] powerpc/mm: Enable gigantic HugeTLB page support for powernv

Anshuman Khandual khandual at linux.vnet.ibm.com
Wed Jul 5 13:49:33 AEST 2017


On 07/05/2017 09:12 AM, Aneesh Kumar K.V wrote:
> 
> 
> On Tuesday 04 July 2017 04:16 PM, Anshuman Khandual wrote:
>> All the functionality for memblock allocation during boot was
>> already present in Book3e and embeded platforms. This change
>> just moves around some code under config conditions to make
>> the function happen on powernv platforms.
>>
>> Signed-off-by: Anshuman Khandual <khandual at linux.vnet.ibm.com>
>> ---
>> Tested lightly on both powernv and pseries platforms with two
>> 16GB pages. Will appreciate comments and suggestions on the
>> approach.
>>
>> On PowerNV while asking for 16GB pages through kernel command
>> line, we need to be careful not to starve the system of memory
>> which can make it unable to boot.
> 
> I have a patch series that does this here. How is this different ?
> 
> http://mid.gmane.org/1496327441-7368-1-git-send-email-
> aneesh.kumar at linux.vnet.ibm.com

Hmm, did not know you have attempted this before. The link does
not open for me. Could you give the subject line for the patch
series.



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