[PATCH v2] eal: fix undetected NUMA nodes

[Thomas Monjalon]

19/03/2025 17:31, David Marchand:
> On Wed, Mar 5, 2025 at 5:25 PM Bruce Richardson
> <bruce.richardson at intel.com> wrote:
> >
> > In cases where the number of cores on a given socket is greater than
> > RTE_MAX_LCORES, then EAL will be unaware of all the sockets/numa nodes
> > on a system. Fix this limitation by having the EAL probe the NUMA node
> > for cores it isn't going to use, and recording that for completeness.
> >
> > This is necessary as memory is tracked per node, and with the --lcores
> > parameters our app lcores may be on different sockets than the lcore ids
> > may imply. For example, lcore 0 is on socket zero, but if app is run
> > with --lcores=0 at 64, then DPDK lcore 0 may be on socket one, so DPDK
> > needs to be aware of that socket.
> >
> > Fixes: 952b20777255 ("eal: provide API for querying valid socket ids")
> > Cc: stable at dpdk.org
> >
> > Signed-off-by: Bruce Richardson <bruce.richardson at intel.com>
> 
> On the principle, the fix lgtm.

It is very late in the release cycle, but we have discussed it
and decided to merge this fix in 25.03.

Applied, thanks.