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Message-ID: <20181119104646.GB9761@hirez.programming.kicks-ass.net>
Date: Mon, 19 Nov 2018 11:46:46 +0100
From: Peter Zijlstra <peterz@...radead.org>
To: Jordan Glover <Golden_Miller83@...tonmail.ch>
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 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.
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