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Subject: Re: [PATCH 3/3] KVM: PPC: Book3S: Add support for hwrng found on
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From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Alexander Graf <agraf@suse.de>
Date: Thu, 03 Oct 2013 08:13:08 +1000
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Cc: tytso@mit.edu, kvm@vger.kernel.org, Gleb Natapov <gleb@redhat.com>,
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On Wed, 2013-10-02 at 16:08 +0200, Alexander Graf wrote:
> A guest should live on the same permission level as a user space
> application. If you run QEMU as UID 1000 without access to /dev/mem,
> why should the guest suddenly be able to directly access a memory
> location (MMIO) it couldn't access directly through a normal user
> space interface.
> 
> It's basically a layering violation.

Guys, please stop with the academic non-sense !

Ben.