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Re: [Qemu-devel] snabbswitch integration with QEMU for userspace etherne
From: |
Julian Stecklina |
Subject: |
Re: [Qemu-devel] snabbswitch integration with QEMU for userspace ethernet I/O |
Date: |
Thu, 30 May 2013 10:08:51 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130514 Thunderbird/17.0.6 |
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On 05/30/2013 08:46 AM, Stefan Hajnoczi wrote:
> On Wed, May 29, 2013 at 6:02 PM, 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...
>
> No, it's still security critical. If there were equivalent
> solutions with better security then I'm sure people would accept
> them. It's just that there isn't an equivalent solution yet :).
My comment was more or less meant in a resigning way. ;) At least we
are not putting HTTP servers in there any more.
Julian
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- Re: [Qemu-devel] snabbswitch integration with QEMU for userspace ethernet I/O, (continued)
- Re: [Qemu-devel] snabbswitch integration with QEMU for userspace ethernet I/O, Stefano Stabellini, 2013/05/29
- Re: [Qemu-devel] snabbswitch integration with QEMU for userspace ethernet I/O, Stefan Hajnoczi, 2013/05/29
- Re: [Qemu-devel] snabbswitch integration with QEMU for userspace ethernet I/O, Michael S. Tsirkin, 2013/05/29
- Re: [Qemu-devel] snabbswitch integration with QEMU for userspace ethernet I/O, Stefan Hajnoczi, 2013/05/29
- Re: [Qemu-devel] snabbswitch integration with QEMU for userspace ethernet I/O, Michael S. Tsirkin, 2013/05/29
- Re: [Qemu-devel] snabbswitch integration with QEMU for userspace ethernet I/O, Julian Stecklina, 2013/05/29
- Re: [Qemu-devel] snabbswitch integration with QEMU for userspace ethernet I/O, ronnie sahlberg, 2013/05/29
- Re: [Qemu-devel] snabbswitch integration with QEMU for userspace ethernet I/O, Stefan Hajnoczi, 2013/05/30
- Re: [Qemu-devel] snabbswitch integration with QEMU for userspace ethernet I/O, Michael S. Tsirkin, 2013/05/30
- Re: [Qemu-devel] [snabb-devel:308] Re: snabbswitch integration with QEMU for userspace ethernet I/O, Luke Gorrie, 2013/05/30
- Re: [Qemu-devel] snabbswitch integration with QEMU for userspace ethernet I/O,
Julian Stecklina <=
- Re: [Qemu-devel] snabbswitch integration with QEMU for userspace ethernet I/O, Julian Stecklina, 2013/05/29
- Re: [Qemu-devel] snabbswitch integration with QEMU for userspace ethernet I/O, Stefan Hajnoczi, 2013/05/29
- Re: [Qemu-devel] snabbswitch integration with QEMU for userspace ethernet I/O, Julian Stecklina, 2013/05/29
- Re: [Qemu-devel] snabbswitch integration with QEMU for userspace ethernet I/O, Stefan Hajnoczi, 2013/05/28