linux-kernel - Re: [PATCH] perf/x86/amd: Reject branch stack for IBS events

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Message-ID: <ZWiIB0AURxL7qb5e@kernel.org>
Date:   Thu, 30 Nov 2023 10:03:03 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Peter Zijlstra <peterz@...radead.org>,
        Ravi Bangoria <ravi.bangoria@....com>
Cc:     Namhyung Kim <namhyung@...nel.org>, Jiri Olsa <jolsa@...nel.org>,
        Ian Rogers <irogers@...gle.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Stephane Eranian <eranian@...gle.com>,
        Ingo Molnar <mingo@...nel.org>
Subject: Re: [PATCH] perf/x86/amd: Reject branch stack for IBS events

Em Thu, Nov 30, 2023 at 11:58:15AM +0530, Ravi Bangoria escreveu:
> On 27-Nov-23 8:02 PM, Arnaldo Carvalho de Melo wrote:
> > Em Fri, Nov 24, 2023 at 09:30:37AM +0530, Ravi Bangoria escreveu:
> >> On 23-Nov-23 8:15 PM, Arnaldo Carvalho de Melo wrote:
> >>> Em Tue, Jun 06, 2023 at 10:08:43AM +0530, Ravi Bangoria escreveu:
> >>>> On 03-Jun-23 1:15 AM, Namhyung Kim wrote:
> >>>>> The AMD IBS PMU doesn't handle branch stacks, so it should not accept
> >>>>> events with brstack.

> >>>>> Signed-off-by: Namhyung Kim <namhyung@...nel.org>
> >>>> Reviewed-by: Ravi Bangoria <ravi.bangoria@....com>

> >>> It seems this patch was not merged, can you please check?

> >> Right. And it does not apply cleanly on peterz/queue.git/perf/core, since
> >> surrounding code has changed.

> > Can you please refresh it if PeterZ has nothing against?

> Posted v2: https://lore.kernel.org/r/20231130062246.290-1-ravi.bangoria@amd.com 

Peter, can you please consider this one?

Thanks a lot!

- Arnaldo