On Fri, Aug 30, 2019 at 06:13:45PM +0200, Laurent Vivier wrote: > When we hotplug a CPU on memory-less/cpu-less node, the linux kernel > crashes. > > This happens because linux kernel needs to know the NUMA topology at > start to be able to initialize the distance lookup table. > > On pseries, the topology is provided by the firmware via the existing > CPUs and memory information. Thus a node without memory and CPU cannot be > discovered by the kernel. > > To avoid the kernel crash, do not allow to start pseries with empty > nodes. > > Signed-off-by: Laurent Vivier <lviv...@redhat.com>
Applied to ppc-for-4.2.
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David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
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