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

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Message-ID: <fc2390cf-bdf9-590e-d078-4bb616d5feb6@amd.com>
Date:   Thu, 30 Nov 2023 11:58:15 +0530
From:   Ravi Bangoria <ravi.bangoria@....com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
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>,
        Ravi Bangoria <ravi.bangoria@....com>
Subject: Re: [PATCH] perf/x86/amd: Reject branch stack for IBS events

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.
>>>>>
>>>>> 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?

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

Thanks.