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Date: Tue, 15 Dec 2015 14:04:46 +0100
From: Borislav Petkov <bp@suse.de>
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Subject: Re: [Qemu-devel] [Patch V2 1/2] x86,
 mce: Basic support to add LMCE support to QEMU
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To: "Raj, Ashok" <ashok.raj@intel.com>
Cc: qemu-devel@nongnu.org, Tony Luck <tony.luck@intel.com>, Eduardo Habkost <ehabkost@redhat.com>, kvm@vger.kernel.org, Gleb Natapov <gleb@kernel.org>, linux-kernel@vger.kernel.org, Gong Chen <gong.chen@intel.com>, Andi Kleen <andi.kleen@intel.com>, Paolo Bonzini <pbonzini@redhat.com>

On Mon, Dec 14, 2015 at 07:17:27PM -0500, Raj, Ashok wrote:
> I can see how this hurts.. since the poller isn't doing cpu model
> specific stuff..?

The poller sees mca_cfg.ser set on an AMD guest and then the whole
handling/decoding goes wrong.

> in the LMCE case, even if you advertise MCG_LMCE_P in MCG_CAP, the
> guest kernel wont call intel_init_lmce() only from mce_intel.c.. so
> the same problem won't happen.

You shouldn't advertise MCG_LMCE_P if the guest is not Intel. Those MCG
bits should be in the CPU model descriptor X86CPUDefinition.

--=20
Regards/Gruss,
    Boris.

SUSE Linux GmbH, GF: Felix Imend=C3=B6rffer, Jane Smithard, Graham Norton=
, HRB 21284 (AG N=C3=BCrnberg)
--=20