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Date: Fri, 28 May 2010 14:20:31 +0100
From: Jamie Lokier <jamie@shareable.org>
Subject: Re: [Qemu-devel] Re: SVM emulation: EVENTINJ marked valid when a
	pagefault happens while issuing a software interrupt
Message-ID: <20100528132031.GG31920@shareable.org>
References: <4BFE8F13.2000009@cs.vu.nl> <4BFEBF9E.90600@web.de>
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	<20100528073531.GD3266@amd.com>
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To: "Roedel, Joerg" <Joerg.Roedel@amd.com>
Cc: Erik van der Kouwe <vdkouwe@cs.vu.nl>, Jan Kiszka <jan.kiszka@web.de>, "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>, Gleb Natapov <gleb@redhat.com>

Roedel, Joerg wrote:
> On Fri, May 28, 2010 at 02:10:59AM -0400, Jan Kiszka wrote:
> > Erik van der Kouwe wrote:
> 
> > > In my experience, if I provide the -enable-kvm switch then the guest VMM
> > > never detects the presence of virtualization support. Does this only
> > > work on AMD hardware? Or do I need to supply some additional parameter
> > > to make it work?
> > 
> > Yes, forgot to mention: -enable-nesting, and you need qemu-kvm. This
> > feature hasn't been merged upstream yet.
> 
> And the svm-emulation is only available on AMD hardware.

I assume you mean nested SVM emulation in a KVM guest is only
available on real AMD hardware?

Is this due to something inherent, or just a limitation of the KVM
code not handling all the necessary traps in kvm-intel?

Thanks,
-- Jamie