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Date:   Tue, 19 May 2020 18:24:27 -0400
From:   Steven Rostedt <rostedt@goodmis.org>
To:     Thomas Gleixner <tglx@linutronix.de>
Cc:     LKML <linux-kernel@vger.kernel.org>, x86@kernel.org,
        "Paul E. McKenney" <paulmck@kernel.org>,
        Andy Lutomirski <luto@kernel.org>,
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        Michael Kelley <mikelley@microsoft.com>,
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        Zhao Yakui <yakui.zhao@intel.com>,
        "Peter Zijlstra (Intel)" <peterz@infradead.org>
Subject: Re: [patch V6 03/37] nmi, tracing: Provide nmi_enter/exit_notrace()
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References: <20200515234547.710474468@linutronix.de>
        <20200515235124.673436293@linutronix.de>
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On Sat, 16 May 2020 01:45:50 +0200
Thomas Gleixner <tglx@linutronix.de> wrote:

> To fully isolate #DB and #BP from instrumentable code it's necessary to
> avoid invoking the hardware latency tracer on nmi_enter/exit().
> 
> Provide nmi_enter/exit() variants which are not invoking the hardware
> latency tracer. That allows to put calls explicitely into the call sites
> outside of the kprobe handling.
> 
> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

-- Steve