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Groups > linux.kernel > #1650213
| From | Michael Ellerman <mpe@ellerman.id.au> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc |
| Date | 2017-05-25 08:30 +0200 |
| Message-ID | <tKUrw-4D7-5@gated-at.bofh.it> (permalink) |
| References | (2 earlier) <tKohY-887-17@gated-at.bofh.it> <tKpQM-KR-77@gated-at.bofh.it> <tKqMO-1ta-17@gated-at.bofh.it> <tKCEi-1Hm-9@gated-at.bofh.it> <tKOm6-tO-9@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Michael Bringmann <mwb@linux.vnet.ibm.com> writes:
> On 05/24/2017 06:19 AM, Michael Ellerman wrote:
>> Michael Bringmann <mwb@linux.vnet.ibm.com> writes:
>>>
>>> With or without 3af229f2071f, we would still need to add something, somewhere to add new
>>> bits to the 'node_possible_map'. That is not being done.
>>
>> You mustn't add bits to the possible map after boot.
>>
>> That's its purpose, to tell you what nodes could ever *possibly* exist.
>
> The problem that I have been encountering is that the 'possible map' did *not*
> show all of the possible nodes.
OK so how did that happen?
The commit message for 3af229f2071f says:
In practice, we never see a system with 256 NUMA nodes, and in fact, we
do not support node hotplug on power in the first place, so the nodes
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
that are online when we come up are the nodes that will be present for
the lifetime of this kernel.
Is that no longer true?
cheers
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[Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Michael Bringmann <mwb@linux.vnet.ibm.com> - 2017-05-23 17:20 +0200
Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Reza Arbab <arbab@linux.vnet.ibm.com> - 2017-05-23 18:00 +0200
Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Michael Bringmann <mwb@linux.vnet.ibm.com> - 2017-05-23 22:10 +0200
Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Reza Arbab <arbab@linux.vnet.ibm.com> - 2017-05-23 23:50 +0200
Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Michael Bringmann <mwb@linux.vnet.ibm.com> - 2017-05-24 00:50 +0200
Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Michael Bringmann <mwb@linux.vnet.ibm.com> - 2017-05-24 00:50 +0200
Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Michael Ellerman <mpe@ellerman.id.au> - 2017-05-24 13:30 +0200
Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Michael Bringmann <mwb@linux.vnet.ibm.com> - 2017-05-25 02:00 +0200
Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Michael Ellerman <mpe@ellerman.id.au> - 2017-05-25 08:30 +0200
Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Michael Bringmann <mwb@linux.vnet.ibm.com> - 2017-05-25 15:50 +0200
Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Reza Arbab <arbab@linux.vnet.ibm.com> - 2017-05-25 17:20 +0200
Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Michael Bringmann <mwb@linux.vnet.ibm.com> - 2017-05-25 17:30 +0200
Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Balbir Singh <bsingharora@gmail.com> - 2017-05-26 05:50 +0200
Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Michael Ellerman <mpe@ellerman.id.au> - 2017-05-26 05:50 +0200
Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Michael Bringmann <mwb@linux.vnet.ibm.com> - 2017-05-26 14:40 +0200
Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Reza Arbab <arbab@linux.vnet.ibm.com> - 2017-05-26 16:40 +0200
Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Michael Ellerman <mpe@ellerman.id.au> - 2017-05-29 07:40 +0200
Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Michael Bringmann <mwb@linux.vnet.ibm.com> - 2017-05-31 16:10 +0200
Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Michael Ellerman <mpe@ellerman.id.au> - 2017-06-01 11:40 +0200
Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Reza Arbab <arbab@linux.vnet.ibm.com> - 2017-06-01 23:40 +0200
Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Balbir Singh <bsingharora@gmail.com> - 2017-06-07 10:10 +0200
Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Michael Ellerman <mpe@ellerman.id.au> - 2017-06-07 14:10 +0200
Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Michael Ellerman <mpe@ellerman.id.au> - 2017-06-06 11:50 +0200
Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Michael Bringmann <mwb@linux.vnet.ibm.com> - 2017-06-06 18:20 +0200
Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Michael Ellerman <mpe@ellerman.id.au> - 2017-06-07 14:10 +0200
Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Reza Arbab <arbab@linux.vnet.ibm.com> - 2017-05-24 16:40 +0200
Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Michael Bringmann <mwb@linux.vnet.ibm.com> - 2017-05-25 01:50 +0200
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