Re: [Vserver] [Release] Stable 2.2.0 : where is the changelog?

From: Daniel Hokka Zakrisson <daniel_at_hozac.com>
Date: Mon 09 Apr 2007 - 15:05:25 BST
Message-ID: <461A4825.50506@hozac.com>

Martin wrote:
> On Wed, 2007-04-04 at 16:34 +0200, Daniel Hokka Zakrisson wrote:
>>> Something is solliciting my curiosity though:
>>>
>>> - privacy for guests, which will hide things from xid 1
>>>
>>> I am not sure I am found of that "privacy" thing.
>> That's why it's configurable ;-)
> <snip>
>>> Isn't supposed to be able to see everything in the system?
>> Well, not if you want to protect the guests from the host.
>
> At the risk of sounding ungreatful for all of the hard work done on
> vserver - what is the 'use case' for this feature? As I understand it
> there is nothing to keep the host from playing with /dev/kmem or
> otherwise tampering with the kernel, so I can't see how a feature like
> this will provide any strong guarentees; unless heirarchies of contexts
> (which would be extreemly cool) are planned. Or is it just intended as
> a 'speed bump' / politeness feature?

Of course the host admin can still do whatever she wants, but if you're
in the business of selling truly private guests, i.e. guests without
VXF_STATE_ADMIN (meaning they cannot be administered from the host), a
kernel with privacy enabled, each guest living on an encrypted device
only the guest has access to etc., doing so would probably not be
appreciated by the clientele.

-- 
Daniel Hokka Zakrisson
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Received on Mon Apr 9 16:08:03 2007
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