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Message-ID: <ada0da4e-4260-47c0-897f-09e3e1e1658e@amd.com>
Date:   Wed, 13 Sep 2023 21:48:43 +0530
User-Agent: Mozilla Thunderbird
Subject: Re: [PATCH] perf/x86/amd: Do not WARN on every IRQ
To:     Jirka Hladky <jhladky@redhat.com>
Cc:     Peter Zijlstra <peterz@infradead.org>,
        Breno Leitao <leitao@debian.org>,
        Ingo Molnar <mingo@redhat.com>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Jiri Olsa <jolsa@kernel.org>,
        Namhyung Kim <namhyung@kernel.org>,
        Ian Rogers <irogers@google.com>,
        Adrian Hunter <adrian.hunter@intel.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Borislav Petkov <bp@alien8.de>,
        Dave Hansen <dave.hansen@linux.intel.com>, x86@kernel.org,
        "H. Peter Anvin" <hpa@zytor.com>, leit@fb.com,
        dcostantino@meta.com,
        "open list:PERFORMANCE EVENTS SUBSYSTEM" 
        <linux-perf-users@vger.kernel.org>,
        "open list:PERFORMANCE EVENTS SUBSYSTEM" 
        <linux-kernel@vger.kernel.org>, ananth.narayan@amd.com,
        Ravi Bangoria <ravi.bangoria@amd.com>,
        Michael Petlan <mpetlan@redhat.com>
References: <20230616115316.3652155-1-leitao@debian.org>
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From:   Sandipan Das <sandipan.das@amd.com>
In-Reply-To: <CAE4VaGBbKC+KgX-drhnc-nHsBo_DfcX4yZWBsNvrULiV3+Li1A@mail.gmail.com>
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Hi Jirka,

Can you please share the following?

1. Family, Model and Stepping of the processor
2. Microcode patch level
On 9/13/2023 8:00 PM, Jirka Hladky wrote:
> Hi Sandipan,
> 
> Is there any update on this issue? We have hit the issue, and it makes
> the server pretty unusable due to the thousands of Call Traces being
> logged.
> 
> Thanks a lot!
> Jirka
> 
> 
> On Fri, Jun 16, 2023 at 5:34 PM Peter Zijlstra <peterz@infradead.org> wrote:
>>
>> On Fri, Jun 16, 2023 at 08:13:22PM +0530, Sandipan Das (AMD) wrote:
>>> The reserved bits should never be set. The purpose of the WARN_ON() is to catch such anomalies.
>>> I am working out the details with Breno and will report back with a resolution.
>>
>> Thanks!
>>
> 
>