linux-kernel - Re: [PATCH] x86/nmi: Rate limit unknown NMI messages

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Date:   Tue, 12 Dec 2023 09:46:45 +0530
From:   Ravi Bangoria <ravi.bangoria@....com>
To:     Namhyung Kim <namhyung@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>,
        "H. Peter Anvin" <hpa@...or.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>, x86@...nel.org,
        Guilherme Amadio <amadio@...too.org>,
        Stephane Eranian <eranian@...gle.com>,
        Ravi Bangoria <ravi.bangoria@....com>
Subject: Re: [PATCH] x86/nmi: Rate limit unknown NMI messages

> On some AMD machines, unknown NMI messages were printed on the console
> continuously when using perf command with IBS.  It was reported that it
> can slow down the kernel.  Let's ratelimit the unknown NMI messages.

Continuously repeating of the same message is useless. So,

Acked-by: Ravi Bangoria <ravi.bangoria@....com>