netdev - system hang on start-up (mlx5?)

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Message-ID: <A1E5B427-897B-409E-B8E3-E417678E81F6@oracle.com>
Date: Wed, 3 May 2023 01:03:26 +0000
From: Chuck Lever III <chuck.lever@...cle.com>
To: "elic@...dia.com" <elic@...dia.com>
CC: "saeedm@...dia.com" <saeedm@...dia.com>,
        Leon Romanovsky
	<leon@...nel.org>,
        linux-rdma <linux-rdma@...r.kernel.org>,
        "open
 list:NETWORKING [GENERAL]" <netdev@...r.kernel.org>
Subject: system hang on start-up (mlx5?)

Hi-

I have a Supermicro X10SRA-F/X10SRA-F with a ConnectX®-5 EN network
interface card, 100GbE single-port QSFP28, PCIe3.0 x16, tall bracket;
MCX515A-CCAT

When booting a v6.3+ kernel, the boot process stops cold after a
few seconds. The last message on the console is the MLX5 driver
note about "PCIe slot advertised sufficient power (27W)".

bisect reports that bbac70c74183 ("net/mlx5: Use newer affinity
descriptor") is the first bad commit.

I've trolled lore a couple of times and haven't found any discussion
of this issue.

--
Chuck Lever