linux-kernel - Re: [PATCH v4 04/27] x86/mce: Delete ist_begin_non

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Date:   Sat, 22 Feb 2020 00:40:02 +0100
From:   Frederic Weisbecker <frederic@...nel.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        rostedt@...dmis.org, mingo@...nel.org, joel@...lfernandes.org,
        gregkh@...uxfoundation.org, gustavo@...eddedor.com,
        tglx@...utronix.de, paulmck@...nel.org, josh@...htriplett.org,
        mathieu.desnoyers@...icios.com, jiangshanlai@...il.com,
        luto@...nel.org, tony.luck@...el.com, dan.carpenter@...cle.com,
        mhiramat@...nel.org
Subject: Re: [PATCH v4 04/27] x86/mce: Delete ist_begin_non_atomic()

On Fri, Feb 21, 2020 at 02:34:20PM +0100, Peter Zijlstra wrote:
> It is an abomination; and in prepration of removing the whole
> ist_enter() thing, it needs to go.
> 
> Convert #MC over to using task_work_add() instead; it will run the
> same code slightly later, on the return to user path of the same
> exception.
> 
> Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>

Reviewed-by: Frederic Weisbecker <frederic@...nel.org>