Messages in this thread | | | Date | Wed, 18 Mar 2020 18:57:07 +0000 (UTC) | From | Christopher Lameter <> | Subject | Re: [PATCH 3/3] mm/page_alloc: Keep memoryless cpuless node 0 offline |
| |
On Mon, 16 Mar 2020, Michal Hocko wrote:
> > We can dynamically number the nodes right? So just make sure that the > > firmware properly creates memory on node 0? > > Are you suggesting that the OS would renumber NUMA nodes coming > from FW just to satisfy node 0 existence? If yes then I believe this is > really a bad idea because it would make HW/LPAR configuration matching > to the resulting memory layout really hard to follow.
NUMA nodes are created by the OS based on information provided by the firmware. Either the FW would need to ensure that a viable node 0 exists or the bootstrap arch code could setup things to the same effect.
| |