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Message-ID: <n06wPuXrWqZEywcNe2BID7GP8dShJlE4L4oLpxO9__duA3noKJO_maOemZwZGC7EHCW7Ur14war-RqLo5pco9uruYaGJMCPOyRVzPJrZyz4=@protonmail.ch>
Date: Mon, 19 Nov 2018 10:49:32 +0000
From: Jordan Glover <Golden_Miller83@...tonmail.ch>
To: Peter Zijlstra <peterz@...radead.org>
Cc: Alexey Budankov <alexey.budankov@...ux.intel.com>, Thomas Gleixner <tglx@...utronix.de>, Kees Cook <keescook@...omium.org>, Jann Horn <jannh@...gle.com>, Ingo Molnar <mingo@...hat.com>, Arnaldo Carvalho de Melo <acme@...nel.org>, Andi Kleen <ak@...ux.intel.com>, Jonatan Corbet <corbet@....net>, Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...hat.com>, Namhyung Kim <namhyung@...nel.org>, Mark Rutland <mark.rutland@....com>, Tvrtko Ursulin <tursulin@...ulin.net>, linux-kernel <linux-kernel@...r.kernel.org>, "kernel-hardening@...ts.openwall.com" <kernel-hardening@...ts.openwall.com>, "linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>
Subject: Re: [PATCH v1 2/2]: Documentation/admin-guide: introduce perf-security.rst file
On Monday, November 19, 2018 11:46 AM, Peter Zijlstra <peterz@...radead.org> wrote:
> On Mon, Nov 19, 2018 at 10:35:59AM +0000, Jordan Glover wrote:
>
> > On Monday, November 19, 2018 6:42 AM, Alexey Budankov alexey.budankov@...ux.intel.com wrote:
> >
> > > +>=3:
> > >
> > > - Restrict *access* to PCL performance monitoring for unprivileged processes.
> > >
> > >
> > > - This is the default on Debian and Android [7]_ , [8]_ .
> > >
> > >
> >
> > AFAIK there is no support for '+>=3' in mainline kernel[1].
> > Debian and Android use out-of-tree patch for that[2].
> > Maybe someone should upstream it?
>
> NAK still stands on that. Alternative's have been proposed but so far
> nobody that cared seems to care enough to implement those.
So, I guess we can't document NAKed patches :)
Jordan
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