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Groups > linux.kernel > #1665431
| From | Balbir Singh <bsingharora@gmail.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: RESEND Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc |
| Date | 2017-06-14 07:30 +0200 |
| Message-ID | <tS92q-11P-9@gated-at.bofh.it> (permalink) |
| References | (16 earlier) <tPHWF-6rv-3@gated-at.bofh.it> <tPMWl-17W-5@gated-at.bofh.it> <tRRyx-6SG-11@gated-at.bofh.it> <tS2tX-5hx-5@gated-at.bofh.it> <tS92r-11P-11@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Wed, Jun 14, 2017 at 3:25 PM, Balbir Singh <bsingharora@gmail.com> wrote: > > > On Wed, Jun 14, 2017 at 8:21 AM, Michael Bringmann <mwb@linux.vnet.ibm.com> > wrote: >> >> On a related note, we are discussing the addition of 2 new device-tree >> properties >> with Pete Heyrman and his fellows that should simplify the determination >> of the >> set of required nodes. >> >> * One property would provide the total/max number of nodes needed by the >> kernel >> on the current hardware. > > Yes, that would be nice to have > >> >> * A second property would provide the total/max number of nodes that the >> kernel >> could use on any system to which it could be migrated. >> > Not sure about this one, are you suggesting more memory can be added depending on the migration target? > > >> >> These properties aren't available, yet, and it takes time to define new >> properties >> in the PAPR and have them implemented in pHyp and the kernel. As an >> intermediary >> step, the systems which are doing a lot of dynamic hot-add/hot-remove >> configuration >> could provide equivalent information to the PowerPC kernel with a command >> line >> parameter. The 'numa.c' code would then read this value and fill in the >> necessary >> entries in the 'node_possible_map'. >> >> Would you foresee any problems with using such a feature? > > Sorry my mailer goofed up, resending Balbir Singh
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Re: RESEND Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Michael Ellerman <mpe@ellerman.id.au> - 2017-06-13 12:50 +0200
Re: RESEND Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Michael Bringmann <mwb@linux.vnet.ibm.com> - 2017-06-14 00:30 +0200
Re: RESEND Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Balbir Singh <bsingharora@gmail.com> - 2017-06-14 07:30 +0200
Re: RESEND Re: [Patch 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Michael Bringmann <mwb@linux.vnet.ibm.com> - 2017-06-14 15:50 +0200
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