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 _ , _ . > > AFAIK there is no support for '+>=3' in mainline kernel. > Debian and Android use out-of-tree patch for that. > 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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