linux-kernel - Re: [Patch V1] x86, mce: Ensure offline CPU's don't participate in mce rendezvous process.

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Message-ID: <20151204231546.GD21529@pd.tnic>
Date:	Sat, 5 Dec 2015 00:15:46 +0100
From:	Borislav Petkov <bp@...e.de>
To:	"Luck, Tony" <tony.luck@...el.com>
Cc:	"Raj, Ashok" <ashok.raj@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>
Subject: Re: [Patch V1] x86, mce: Ensure offline CPU's don't participate in
 mce rendezvous process.

On Fri, Dec 04, 2015 at 11:11:12PM +0000, Luck, Tony wrote:
> > With that hunk here you want to clear MSR_IA32_MCG_STATUS in the
> > !cfg->banks case, right?
> 
> I can't imagine how we'd get into do_machine_check without any banks.
> 
> Would indeed be a separate patch ... but value seems limited.

Then we should kill that hunk. I'm all for not covering improbable
cases.

-- 
Regards/Gruss,
    Boris.

SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)
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