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SubjectRe: [PATCH v5 3/3] mm/page_alloc: Keep memoryless cpuless node 0 offline
On Fri, 3 Jul 2020 18:28:23 +0530 Srikar Dronamraju <srikar@linux.vnet.ibm.com> wrote:

> > The memory hotplug changes that somehow because you can hotremove numa
> > nodes and therefore make the nodemask sparse but that is not a common
> > case. I am not sure what would happen if a completely new node was added
> > and its corresponding node was already used by the renumbered one
> > though. It would likely conflate the two I am afraid. But I am not sure
> > this is really possible with x86 and a lack of a bug report would
> > suggest that nobody is doing that at least.
> >
>
> JFYI,
> Satheesh copied in this mailchain had opened a bug a year on crash with vcpu
> hotplug on memoryless node.
>
> https://bugzilla.kernel.org/show_bug.cgi?id=202187

So... do we merge this patch or not? Seems that the overall view is
"risky but nobody is likely to do anything better any time soon"?

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