linux-kernel - Re: [Qemu-devel] [Patch V2 1/2] x86, mce: Basic support to add LMCE support to QEMU

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Message-ID: <20151214223716.GK11630@pd.tnic>
Date:	Mon, 14 Dec 2015 23:37:16 +0100
From:	Borislav Petkov <bp@...e.de>
To:	"Raj, Ashok" <ashok.raj@...el.com>
Cc:	Eduardo Habkost <ehabkost@...hat.com>, kvm@...r.kernel.org,
	Tony Luck <tony.luck@...el.com>,
	Gong Chen <gong.chen@...el.com>,
	Gleb Natapov <gleb@...nel.org>, linux-kernel@...r.kernel.org,
	qemu-devel@...gnu.org, Andi Kleen <andi.kleen@...el.com>,
	Paolo Bonzini <pbonzini@...hat.com>
Subject: Re: [Qemu-devel] [Patch V2 1/2] x86, mce: Basic support to add LMCE
 support to QEMU

On Mon, Dec 14, 2015 at 02:11:46PM -0500, Raj, Ashok wrote:
> This is mostly harmless.. since the MCG_CAP space is shared and has no
> conflict between vendors. Also just the CAP being set has no effect.

Of course it does - we check SER_P in machine_check_poll() and when
I emulate an AMD guest and inject errors into it, error handling is
obviously wrong, see:

https://lkml.kernel.org/r/20151123150355.GE5134@pd.tnic

-- 
Regards/Gruss,
    Boris.

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