On 07/17/18 at 01:46pm, David Rientjes wrote: > On Tue, 17 Jul 2018, Baoquan He wrote: > > > We can still use 'kernelcore=mirror' or 'movable_node' for the usage > > of hotplug and movable zone. If somebody shows up with a valid usecase > > we can reconsider. > > > > We actively use kernelcore=n%, I had recently added support for the option > in the first place in 4.17. It's certainly not deprecated. Thanks for telling. Just for curiosity, could you tell the scenario you are using kernelcore=n%? Since it evenly spread movable area on nodes, we may not be able to physically hot unplug/plug RAM. Thanks Baoquan