Re: [Qemu-devel] [Qemu-ppc] [PATCH for 2.13 0/2] target/ppc: Support adding memory to initially memory-less NUMA nodes

[Greg Kurz <groug@kaod.org>]

On Thu,  5 Apr 2018 10:35:21 -0400
Serhii Popovych <spopovyc@redhat.com> wrote:

> Now PowerPC Linux kernel supports hot-add to NUMA nodes not populated
> initially with memory we can enable such support in qemu. This requires
> two changes:
> 
>   o Add device tree property "ibm,max-associativity-domains" to let
>     guest kernel chance to find max possible NUMA node
> 
>   o Revert  commit b556854bd852 ("spapr: Don't allow memory hotplug to
>     memory less nodes") to remove check for hot-add to memory-less node.
> 

But the series do the changes in the opposite order... 

IIUC correctly a recent kernel will mis-behave as before linux commit
a346137e9142 if the property is not present... ie, patch 2 should come
first.

> See description messges for individual changes for more details.
> 
> Serhii Popovych (2):
>   Revert "spapr: Don't allow memory hotplug to memory less nodes"
>   spapr: Add ibm,max-associativity-domains property
> 
>  hw/ppc/spapr.c | 33 +++++++++++----------------------
>  1 file changed, 11 insertions(+), 22 deletions(-)
>