On Fri, 23 Sep 2022 11:33:40 +0800 Liu Shixin <liushixin2@xxxxxxxxxx> wrote: > Since patch 316346243be6 That's a merge commit. I'll rewrite this to 76ae847497bc52 ("Documentation: raise minimum supported version of GCC to 5.1"). Which, although misnamed is the commit which made the change. > has already updated the minimum gcc version to 5.1. > The previous problem mentioned in patch f02c69680088 I'll make that f02c69680088 ("include/linux/memory.h: implement register_hotmemory_notifier()"). And hot damn I write good changelogs! Wrote :( > is not existed. So we > can now revert to use hotplug_memory_notifier() directly rather than > register_hotmemory_notifier(). I redid the changelogs thusly: : Commit 76ae847497bc52 ("Documentation: raise minimum supported version of : GCC to 5.1") updated the minimum gcc version to 5.1. So the problem : mentioned in f02c69680088 ("include/linux/memory.h: implement : register_hotmemory_notifier()") no longer exist. So we can now switch to : use hotplug_memory_notifier() directly rather than : register_hotmemory_notifier().