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

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Message-ID: <ZWSombzfCkxHc7lC@kernel.org>
Date:   Mon, 27 Nov 2023 11:32:57 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ravi Bangoria <ravi.bangoria@....com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        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 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.
> >>>
> >>> Cc: Ravi Bangoria <ravi.bangoria@....com>
> >>> 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?

- Arnaldo