From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marcelo Tosatti <mtosatti@redhat.com>
Subject: Re: Internal error, emulation failure when trying to boot Win7
 install
Date: Wed, 8 Jan 2014 19:40:10 -0200
Message-ID: <20140108214009.GA27549@amt.cnet>
References: <106859764.aIpCGAEGLk@r008>
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Cc: kvm@vger.kernel.org
To: Guido Winkelmann <guido@ambient-entertainment.de>
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On Tue, Jan 07, 2014 at 07:48:41PM +0100, Guido Winkelmann wrote:
> Hi,
> 
> When trying to boot a Windows 7 install from a local virtual disks, qemu stops 
> with the messages:
> 
> KVM internal error. Suberror: 1
> emulation failure

Can you please enable the following tracepoints via the 

# cd /sys/kernel/debug/tracing/
# echo kvm_emulate_insn kvm_exit  > set_event

provided that debugfs is mounted at /sys/kernel/debug.

Then execute the problematic guest, and make the content of /sys/kernel/debug/trace 
available somewhere?