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Message-ID: <50E727E1.8040604@gmail.com>
Date:   Fri, 04 Jan 2013 11:05:05 -0800
From:   David Daney <ddaney.cavm@gmail.com>
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To:     "Hill, Steven" <sjhill@mips.com>
CC:     "Maciej W. Rozycki" <macro@linux-mips.org>,
        "linux-mips@linux-mips.org" <linux-mips@linux-mips.org>,
        "ralf@linux-mips.org" <ralf@linux-mips.org>
Subject: Re: [PATCH v4] MIPS: Make CP0 config registers readable via sysfs.
References: <1355436915-24381-1-git-send-email-sjhill@mips.com> <alpine.LFD.2.02.1212132325180.5950@eddie.linux-mips.org>,<50CA6712.1060809@gmail.com> <31E06A9FC96CEC488B43B19E2957C1B801146AF10B@exchdb03.mips.com>
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On 01/04/2013 10:38 AM, Hill, Steven wrote:
>> You're exporting privileged context outside the kernel -- have all the
>> security implications been considered?
>>
> Maciej,
>
> I have gone through the config registers bit-by-bit and I do not see
> where there are any security implications.

[...]

> Unless you can provide a counterexample,
> this patch does not compromise the system in anyway.
>

The patch stands alone.  Any security problems it might have are 
completely unrelated to any hypothetical Counter Examples.

David Daney