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Re: [Qemu-devel] snabbswitch integration with QEMU for userspace etherne

From: ronnie sahlberg
Subject: Re: [Qemu-devel] snabbswitch integration with QEMU for userspace ethernet I/O
Date: Wed, 29 May 2013 19:35:44 -0700


Stefan's concerns are valid.

(Hopefully, kernel is harder to exploit and more carefully audited.)

On Wed, May 29, 2013 at 9:02 AM, Julian Stecklina
<address@hidden> wrote:
> On 05/29/2013 04:21 PM, Stefan Hajnoczi wrote:
>> The fact that a single switch process has shared memory access to all
>> guests' RAM is critical.  If the switch process is exploited, then that
>> exposes other guests' data!  (Think of a multi-tenant host with guests
>> belonging to different users.)
> True. But people don't mind having instruction decoding and half of
> virtio in the kernel these days, so it can't be that security critical...
> Julian

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