Re: fd3e45436660 ("ACPI / NUMA: ia64: Parse all entries of SRAT memory affinity table")

From: Michal Hocko
Date: Wed May 09 2018 - 08:25:02 EST


On Wed 11-04-18 12:48:32, Michal Hocko wrote:
> Hi,
> my attention was brought to the %subj commit and either I am missing
> something or the patch is quite dubious. What is it actually trying to
> fix? If a BIOS/FW provides more memblocks than the limit then we would
> get misleading numa topology (numactl -H output) but is the situation
> much better with it applied? Numa init code will refuse to init more
> memblocks than the limit and falls back to dummy_numa_init (AFAICS)
> which will break the topology again and numactl -H will have a
> misleading output anyway.
>
> So why is the patch an improvement at all?

ping? I would be tempted to simply revert the patch as a wrong fix.
--
Michal Hocko
SUSE Labs