linux-kernel - Re: general protection fault

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Date:	Thu, 02 Feb 2012 14:40:43 +0200
From:	Avi Kivity <avi@...hat.com>
To:	n2CpHSJnr4MP@...eni.com
CC:	KVM <kvm@...r.kernel.org>, Qemu Devel <qemu-devel@...gnu.org>,
	Oprofile-List <oprofile-list@...ts.sourceforge.net>,
	Linux-Kernel <linux-kernel@...r.kernel.org>
Subject: Re: general protection fault

On 01/18/2012 06:40 AM, Dyweni - KVM wrote:
> Hi All,
>
> I'm not sure who this falls to, so I've included all all parties that
> I thought may be relevant.
>
> I'm getting the following error from my guest kernel when running
> oprofile within qemu-kvm:
>

kvm does not virtualize a PMU before Linux 3.3, so oprofile is not
supported.  The facilities for identifying the PMU to the guest are very
lacking, so it's hard to make this fail gracefully.

On a Linux 3.3 host, you can provide a PMU to the guest, but only using
latest qemu and providing -cpu host or similar.  This only works on
Intel hosts for now.

-- 
error compiling committee.c: too many arguments to function

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