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Date: Thu, 8 May 2025 13:23:07 +0200
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Subject: Re: [PATCH] eal: warn if no lcore is available
To: David Marchand <david.marchand@redhat.com>, <dev@dpdk.org>
CC: <bruce.richardson@intel.com>, <stable@dpdk.org>, Tyler Retzlaff
<roretzla@linux.microsoft.com>, Jianfeng Tan <jianfeng.tan@intel.com>, "Neil
Horman" <nhorman@tuxdriver.com>
References: <20250508051915.226465-2-david.marchand@redhat.com>
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From: "Burakov, Anatoly" <anatoly.burakov@intel.com>
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Errors-To: stable-bounces@dpdk.org
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@dpdk.org
>
> Signed-off-by: David Marchand <david.marchand@redhat.com>
> ---
Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
--
Thanks,
Anatoly