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Date: Wed, 23 Sep 2026 14:08:07 +0200
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: jaidevshastri@vt.edu
Cc: Jiri Slaby <jirislaby@kernel.org>, Michal Simek <michal.simek@amd.com>,
	linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] serial: xilinx_uartps: publish console_port with release
 semantics
Message-ID: <2026092331-pope-avalanche-40ce@gregkh>
References: <20260921-mb-uartps-v1-1-9fc2f3d4b1a5@vt.edu>
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In-Reply-To: <20260921-mb-uartps-v1-1-9fc2f3d4b1a5@vt.edu>

On Mon, Sep 21, 2026 at 09:21:13PM -0400, Jaidev Shastri via B4 Relay wrote:
> From: Jaidev Shastri <jaidevshastri@vt.edu>
> 
> cdns_uart_probe() assigns the first probed port to console_port with a
> plain store once the port is set up. cdns_uart_console_write() and
> cdns_uart_console_setup() read it with plain loads.
> 
> Store it with smp_store_release() and read it with smp_load_acquire().
> 
> Found with MBCheck, a static herd7-based memory consistency checker.

And how was this tested?  The shashiko review bot shows where your tool
looks wrong...