Re: [Qemu-devel] [PATCH] pseries: do not allow memory-less/cpu-less NUMA node

2019-09-02 Thread David Gibson
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, th

Re: [Qemu-devel] [PATCH] pseries: do not allow memory-less/cpu-less NUMA node

2019-08-30 Thread Daniel P . Berrangé
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, th

[Qemu-devel] [PATCH] pseries: do not allow memory-less/cpu-less NUMA node

2019-08-30 Thread Laurent Vivier
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 inform