On Thu 09-12-21 19:01:03, Alexey Makhalov wrote:
On Dec 9, 2021, at 5:29 AM, Michal Hocko mhocko@suse.com wrote:
On Thu 09-12-21 10:23:52, Alexey Makhalov wrote:
On Dec 9, 2021, at 1:56 AM, Michal Hocko mhocko@suse.com wrote:
On Thu 09-12-21 09:28:55, Alexey Makhalov wrote:
[ 0.081777] Node 4 uninitialized by the platform. Please report with boot dmesg. [ 0.081790] Initmem setup node 4 [mem 0x0000000000000000-0x0000000000000000] ... [ 0.086441] Node 127 uninitialized by the platform. Please report with boot dmesg. [ 0.086454] Initmem setup node 127 [mem 0x0000000000000000-0x0000000000000000]
Interesting that only those two didn't get a proper arch specific initialization. Could you check why? I assume init_cpu_to_node doesn't see any CPU pointing at this node. Wondering why that would be the case but that can be a bug in the affinity tables.
My bad shrinking. Not just these 2, but all possible and not present nodes from 4 to 127 are having this message.
Does that mean that your possible (but offline) cpus do not set their affinity?
Hi Michal,
I didn’t quite gut a question here. Do you mean scheduler affinity for offlined/not present CPUs? From the patch, this message should be printed for every possible offlined node: for_each_node(nid) { ... if (!node_online(nid)) { pr_warn("Node %d uninitialized by the platform. Please report with boot dmesg.\n", nid);
Sure, let me expand on this a bit. X86 initialization code (init_cpu_to_node) does for_each_possible_cpu(cpu) { int node = numa_cpu_node(cpu);
if (node == NUMA_NO_NODE) continue;
if (!node_online(node)) init_memory_less_node(node);
numa_set_node(cpu, node); }
which means that a memory less node is not initialized either when - your offline CPUs are not listed in possible cpus for some reason - or they do not have any node affinity (numa_cpu_node is NUMA_NO_NODE).
Could you check what is the reason in your particular case please?