linux-kernel - Re: [RFC] #MC mess

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Message-ID: <20200218195130.GO14449@zn.tnic>
Date:   Tue, 18 Feb 2020 20:51:30 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     "Luck, Tony" <tony.luck@...el.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Andy Lutomirski <luto@...nel.org>, x86-ml <x86@...nel.org>,
        lkml <linux-kernel@...r.kernel.org>
Subject: Re: [RFC] #MC mess

On Tue, Feb 18, 2020 at 06:20:38PM +0000, Luck, Tony wrote:
> > Anything else I'm missing? It is likely...
> 
> +	hw_breakpoint_disable();
> +	static_key_disable(&__tracepoint_read_msr.key);
> +	tracing_off();
> +
>  	ist_enter(regs);
> 
> How about some code to turn all those back on for a recoverable (where
> we actually recovered) #MC?

The use case being?

-- 
Regards/Gruss,
    Boris.

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