> On Jan 22, 2019, at 1:06 AM, Juergen Gross <jgross@xxxxxxxx> wrote: > > diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c > index b9a667d36c55..7fc2a87110a3 100644 > --- a/mm/memory_hotplug.c > +++ b/mm/memory_hotplug.c > @@ -96,10 +96,16 @@ void mem_hotplug_done(void) > cpus_read_unlock(); > } > > +u64 max_mem_size = -1; This may be pedantic, but I'd rather see U64_MAX used here.