linux-kernel - Re: [PATCH 1/1] arm64: defconfig: Add Coresight as module

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Message-ID: <20220921164622.GA1124503@p14s>
Date:   Wed, 21 Sep 2022 10:46:22 -0600
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     Mark Brown <broonie@...nel.org>
Cc:     James Clark <james.clark@....com>, coresight@...ts.linaro.org,
        catalin.marinas@....com, linux-arm-kernel@...ts.infradead.org,
        suzuki.poulose@....com, mike.leach@...aro.org, leo.yan@...aro.org,
        linux-kernel@...r.kernel.org, Will Deacon <will@...nel.org>
Subject: Re: [PATCH 1/1] arm64: defconfig: Add Coresight as module

On Wed, Sep 21, 2022 at 04:26:59PM +0100, Mark Brown wrote:
> On Wed, Sep 21, 2022 at 03:05:35PM +0100, James Clark wrote:
> 
> > +CONFIG_CORESIGHT_CTI=m
> > +CONFIG_CORESIGHT_CTI_INTEGRATION_REGS=y
>

I agree - integration registers should not be enabled by default.

> Do we want this turned on by default?  According to the
> description it's a bit dangerous and it's exposed via sysfs
> rather than debugfs.