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Subject: Re: [PATCH 3/3] KVM: PPC: Book3S: Add support for hwrng found on
 some powernv systems
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Gleb Natapov <gleb@redhat.com>
Date: Thu, 03 Oct 2013 08:15:55 +1000
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Cc: tytso@mit.edu, kvm@vger.kernel.org, linuxppc-dev@ozlabs.org,
 Alexander Graf <agraf@suse.de>, kvm-ppc@vger.kernel.org,
 linux-kernel@vger.kernel.org, herbert@gondor.hengli.com.au,
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On Wed, 2013-10-02 at 17:10 +0300, Gleb Natapov wrote:
> > The hwrng is accessible by host userspace via /dev/mem.
> > 
> Regular user has no access to /dev/mem, but he can start kvm guest and
> gain access to the device.

Seriously. You guys are really trying hard to make our life hell or
what ? That discussion about access permissions makes no sense
whatsoever. Please stop.

Ben.