Comment 42 for bug 1294283

Hi Joseph,

In Linux-next, we have seen an issue caused by memory not being onlined after hot adding. This bug caused our guest to falsely report memory to host as being assigned; even though it was actually inaccessible. We wonder if this is what you’re seeing as well.

There were two relevant patches to fix hot-add:
- https://lkml.org/lkml/diff/2015/7/17/374/1 <= this patch fixes BUG_ON crash when hot-adding memory
- https://lkml.org/lkml/diff/2015/8/3/104/1 <= this patch fixes the onlining issue described above