Re: [PATCH 3/3] KVM: PPC: Book3S: Add support for hwrng found on some powernv systems

Benjamin Herrenschmidt
2013-10-02T22:13:37Z

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.