| Message ID | 20181127215610.3111.59806.stgit@ltczep4-lp5.aus.stglabs.ibm.com (mailing list archive) |
|---|---|
| State | Rejected |
| Headers | show |
| Series | powerpc/numa: Ensure nodes are inited for mem changes | expand |
| Context | Check | Description |
|---|---|---|
| snowpatch_ozlabs/apply_patch | warning | next/apply_patch Patch failed to apply |
| snowpatch_ozlabs/apply_patch | fail | Failed to apply to any branch |
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index d9109e0..f3714fa 100644 --- a/arch/powerpc/mm/numa.c +++ b/arch/powerpc/mm/numa.c @@ -1026,6 +1026,11 @@ int hot_add_scn_to_nid(unsigned long scn_addr) pr_debug("new nid %d for %#010lx\n", nid, scn_addr); } + if (NODE_DATA(nid) == NULL) { + if (try_online_node(nid)) + nid = first_online_node; + } + return nid; }
This patch fixes some problems encountered at runtime where changes to memory affinity changes reference nodes that were not initialized during system execution after boot. We are initializing a node description that may be subsequently used for memory or CPUs before it can be referenced as invalid. Signed-off-by: Michael Bringmann <mwb@linux.vnet.ibm.com> --- arch/powerpc/mm/numa.c | 5 +++++ 1 file changed, 5 insertions(+)