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Date: Sun, 21 Mar 2010 22:24:03 +0200
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To: Antoine Martin <antoine@nagafix.co.uk>
CC: Olivier Galibert <galibert@pobox.com>, Ingo Molnar <mingo@elte.hu>,
       Anthony Liguori <anthony@codemonkey.ws>,
       Pekka Enberg <penberg@cs.helsinki.fi>,
       "Zhang, Yanmin" <yanmin_zhang@linux.intel.com>,
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       oerg Roedel <joro@8bytes.org>, Jes Sorensen <Jes.Sorensen@redhat.com>,
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       ziteng.huang@intel.com, Arnaldo Carvalho de Melo <acme@redhat.com>,
       Fr?d?ric Weisbecker <fweisbec@gmail.com>
Subject: Re: [RFC] Unify KVM kernel-space and user-space code into a single
 project
References: <4BA256FE.5080501@codemonkey.ws> <84144f021003180951s5207de16p1cdf4b9b04040222@mail.gmail.com> <20100318170223.GB9756@elte.hu> <4BA25E66.2050800@redhat.com> <20100318172805.GB26067@elte.hu> <4BA32E1A.2060703@redhat.com> <20100319085346.GG12576@elte.hu> <4BA3747F.60401@codemonkey.ws> <20100321191742.GD25922@elte.hu> <4BA67B2F.4030101@redhat.com> <20100321200849.GA51323@dspnet.fr.eu.org> <4BA67D75.8060809@redhat.com> <4BA67F12.6030501@nagafix.co.uk>
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On 03/21/2010 10:18 PM, Antoine Martin wrote:
>> That includes the guest kernel.  If you can deploy a new kernel in 
>> the guest, presumably you can deploy a userspace package.
>
> That's not always true.
> The host admin can control the guest kernel via "kvm -kernel" easily 
> enough, but he may or may not have access to the disk that is used in 
> the guest. (think encrypted disks, service agreements, etc)

There is a matching -initrd argument that you can use to launch a 
daemon.  I believe that -kernel use will be rare, though.  It's a lot 
easier to keep everything in one filesystem.

-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.