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Date: Thu, 10 Nov 2016 10:00:38 +0100
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: "Luck, Tony" <tony.luck@intel.com>, Borislav Petkov <bp@alien8.de>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "rt@linutronix.de" <rt@linutronix.de>,
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        "x86@kernel.org" <x86@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH 22/25] x86/mcheck: Do the init in one place
Message-ID: <20161110090037.apohiqnqgbymbq6j@linutronix.de>
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On 2016-11-09 18:37:23 [+0000], Luck, Tony wrote:
> > That's why the hotplug callback mce_disable_cpu() doesn't fiddle with
> > CR4 - it only clears the bits in MCi_CTL. And I think we should remain
> > that way.
> 
> N.B. See vendor_disable_error_reporting() ... on Intel we don't clear MCi_CTL.

okay. So I had a discussion with Boris and we agreed that we don't do
the init part in one place only the timer stuff will be moved.
If I understand Tony correctly then we undo something in
vendor_disable_error_reporting() (on !INTEL CPUs) that we enable in
identify_cpu().

Boris, if my understanding is correct, what now? Do move the whole
hotplug init part to an earlier stage? Or do we drop
vendor_disable_error_reporting()?

> -Tony

Sebastian