linux-kernel - Re: [PATCH] arch/x86/kernel/cpu/umwait.c

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Message-ID: <147298.1565301874@turing-police>
Date:   Thu, 08 Aug 2019 18:04:34 -0400
From:   "Valdis Klētnieks" <valdis.kletnieks@...edu>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, LKML <linux-kernel@...r.kernel.org>,
        Fenghua Yu <fenghua.yu@...el.com>
Subject: Re: [PATCH] arch/x86/kernel/cpu/umwait.c - remove unused variable

On Thu, 08 Aug 2019 22:32:38 +0200, Thomas Gleixner said:

> Care to resend the last few with fixed subject lines, so I don't have to
> clean them up?

Will do that later this evening...

> The right thing to do is to have a cpu_offline callback which clears the
> umwait MSR. That covers also the failure in the cpu hotplug setup. Then
> handling an error return makes sense and keeps everything in a workable
> shape.

OK, in that case, toss the umwait patch for now....

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