Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1651413
| From | Reza Arbab <arbab@linux.vnet.ibm.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc |
| Date | 2017-05-26 16:40 +0200 |
| Message-ID | <tLozf-73D-9@gated-at.bofh.it> (permalink) |
| References | (5 earlier) <tKCEi-1Hm-9@gated-at.bofh.it> <tKOm6-tO-9@gated-at.bofh.it> <tKUrw-4D7-5@gated-at.bofh.it> <tL2Ip-1qK-3@gated-at.bofh.it> <tLeqd-Ek-11@gated-at.bofh.it> |
| Organization | IBM Linux Technology Center |
On Fri, May 26, 2017 at 01:46:58PM +1000, Michael Ellerman wrote: >Reza Arbab <arbab@linux.vnet.ibm.com> writes: > >> On Thu, May 25, 2017 at 04:19:53PM +1000, Michael Ellerman wrote: >>>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? >> >> I don't know what the reasoning behind that statement was at the time, >> but as far as I can tell, the only thing missing for node hotplug now is >> Balbir's patchset [1]. He fixes the resource issue which motivated >> 3af229f2071f and reverts it. >> >> With that set, I can instantiate a new numa node just by doing >> add_memory(nid, ...) where nid doesn't currently exist. > >But does that actually happen on any real system? I don't know if anything currently tries to do this. My interest in having this working is so that in the future, our coherent gpu memory could be added as a distinct node by the device driver. -- Reza Arbab
Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
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
csiph-web