Re: [bug] aarch64 host no longer boots after 767507654c22 ("arch_numa: switch over to numa_memblks")

[Jan Stancek <jstancek@redhat.com>]

On Wed, Oct 30, 2024 at 2:12 PM Mike Rapoport <rppt@kernel.org> wrote:
>
> On Tue, Oct 29, 2024 at 10:03:31PM +0100, Jan Stancek wrote:
> > On Tue, Oct 29, 2024 at 5:24 PM Mike Rapoport <rppt@kernel.org> wrote:
> > >
> > > On Tue, Oct 29, 2024 at 04:43:39PM +0100, Jan Stancek wrote:
> > > > On Tue, Oct 29, 2024 at 4:07 PM Zi Yan <ziy@nvidia.com> wrote:
> > > > >
> > > > > +tegra mailing list and maintainers
> > > > >
> > > > > On 29 Oct 2024, at 8:47, Jan Stancek wrote:
> > > > >
> > > > > > Hi,
> > > > > >
> > > > > > I'm seeing a regression on Nvidia IGX system, which no longer boots.
> > > > > >
> > > > > > bisect points at commit 767507654c22 ("arch_numa: switch over to numa_memblks").
> > > > > > It hangs very early, with 4k or 64k pages, with no kernel messages printed:
> > > > > >
> > > > > > EFI stub: Booting Linux Kernel...
> > > > > > EFI stub: Using DTB from configuration table
> > > > > > EFI stub: Exiting boot services...
> > > > > > <hangs here>
> > > > > >
> > > > >
> > > > > Is it possible to have earlycon output? It is hard to debug without any
> > > > > information except kernel fails to boot.
> > > >
> > > > I know it was a long shot, so far I haven't had luck getting it to work.
> > >
> > > Does it boot with numa=off and numa=fake?
> >
> > No, it doesn't.
>
> No ideas without the logs, sorry.

With some trial & error I narrowed it down, but as it turns out
the fix has already landed upstream today:
d95fb348f016 ("mm: numa_clear_kernel_node_hotplug: Add NUMA_NO_NODE
check for node id")

Regards,
Jan