[PATCH] eal: warn if no lcore is available

[Burakov, Anatoly]

On 5/8/2025 7:19 AM, David Marchand wrote:
> On systems with more cpu than RTE_MAX_LCORE, starting DPDK with
> cores >= RTE_MAX_LCORE ends up with an ambiguous error log.
> 
> Example with RTE_MAX_LCORE=8:
> $ taskset -c 8 ./build/app/dpdk-testpmd
> EAL: Detected CPU lcores: 8
> EAL: Detected NUMA nodes: 1
> EAL: Invalid 'command line' arguments.
> EAL: Error - exiting with code: 1
> Cannot init EAL: Invalid argument
> 
> Add a better hint to help the user.
> 
> Fixes: 2eba8d21f3c9 ("eal: restrict cores auto detection")
> Cc: stable at dpdk.org
> 
> Signed-off-by: David Marchand <david.marchand at redhat.com>
> ---

Acked-by: Anatoly Burakov <anatoly.burakov at intel.com>
-- 
Thanks,
Anatoly