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Date:   Tue, 31 Oct 2023 06:51:39 +0100
From:   Wolfram Sang <wsa@kernel.org>
To:     Jan Bottorff <janb@os.amperecomputing.com>
Cc:     Jarkko Nikula <jarkko.nikula@linux.intel.com>,
        Serge Semin <fancer.lancer@gmail.com>,
        Yann Sionneau <ysionneau@kalrayinc.com>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Yann Sionneau <yann@sionneau.net>,
        Will Deacon <will@kernel.org>,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Mika Westerberg <mika.westerberg@linux.intel.com>,
        Jan Dabros <jsd@semihalf.com>,
        Andi Shyti <andi.shyti@kernel.org>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] i2c: designware: Fix corrupted memory seen in the ISR
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Mail-Followup-To: Wolfram Sang <wsa@kernel.org>,
        Jan Bottorff <janb@os.amperecomputing.com>,
        Jarkko Nikula <jarkko.nikula@linux.intel.com>,
        Serge Semin <fancer.lancer@gmail.com>,
        Yann Sionneau <ysionneau@kalrayinc.com>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Yann Sionneau <yann@sionneau.net>, Will Deacon <will@kernel.org>,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Mika Westerberg <mika.westerberg@linux.intel.com>,
        Jan Dabros <jsd@semihalf.com>, Andi Shyti <andi.shyti@kernel.org>,
        Philipp Zabel <p.zabel@pengutronix.de>, linux-i2c@vger.kernel.org,
        linux-kernel@vger.kernel.org
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> I'm personally in camp #2, safety first, performance fine tuning later if
> needed. Latent missing barrier bugs are difficult and time consuming to
> find.

I agree.


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