[dpdk-dev] [PATCH v3] mem: Fix anonymous mapping on Power9.

Burakov, Anatoly anatoly.burakov at intel.com
Wed Feb 20 17:44:07 CET 2019


On 20-Feb-19 4:27 PM, Thomas Monjalon wrote:
> 20/02/2019 17:04, Burakov, Anatoly:
>> On 16-Nov-18 5:35 PM, David Wilder wrote:
>>> Removed the use of MAP_HUGETLB for anonymous mapping on ppc64.  The
>>> MAP_HUGETLB had previously been added to workaround issues on IBM Power8
>>> systems when mapping /dev/zero (see: commit
>>> 284ae3e9ff9a92575c28c858efd2c85c8de6d440).  In the current code the
>>> MAP_HUGETLB flag will cause the anonymous mapping to fail on Power9.
>>> Note, Power8 is currently failing to correctly mmap Hugepages, with and
>>> without this change.
>>>
>>> Signed-off-by: David Wilder <dwilder at us.ibm.com>
>>> Reviewed-by: Pradeep Satyanarayana <pradeep at us.ibm.com>
>>> ---
>>
>> The changes are contained entirely to POWER9 code paths/docs, so while i
>> cannot verify them working for obvious reasons, i have no objections to
>> this patch.
>>
>> Acked-by: Anatoly Burakov <anatoly.burakov at intel.com>
> 
> It was applied a long time ago :)
> 

I can see that now :) Someone replied to it and it bubbled up my inbox...

-- 
Thanks,
Anatoly


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