Re: [PATCH] arm64, numa: Add cpu_to_node() implementation.

[Hanjun Guo]

On 09/20/2016 09:21 PM, Robert Richter wrote:
> On 20.09.16 19:32:34, Hanjun Guo wrote:
> > On 09/20/2016 06:43 PM, Robert Richter wrote:
>
> > > Unfortunately either your nor my code does fix the BUG_ON() I see with
> > > the numa kernel:
> > >
> > >   kernel BUG at mm/page_alloc.c:1848!
> > >
> > > See below for the core dump. It looks like this happens due to moving
> > > a mem block where first and last page are mapped to different numa
> > > nodes, thus, triggering the BUG_ON().
> >
> > Didn't triggered it on our NUMA hardware, could you provide your
> > config then we can have a try?
>
> Config attached. Other configs with an initrd fail too.

hmm, we can't reproduce it on our hardware, do we need
to run some specific stress test on it?

Thanks
Hanjun