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Date: Tue, 23 Mar 2010 15:05:38 -0400
Message-ID: <90eb1dc71003231205o623a67b5taf12f8305fc89eb9@mail.gmail.com>
Subject: Re: [RFC] Unify KVM kernel-space and user-space code into a single 
	project
From: Javier Guerra Giraldez <javier@guerrag.com>
To: Joerg Roedel <joro@8bytes.org>
Cc: Avi Kivity <avi@redhat.com>, Anthony Liguori <anthony@codemonkey.ws>,
       Ingo Molnar <mingo@elte.hu>, Pekka Enberg <penberg@cs.helsinki.fi>,
       "Zhang, Yanmin" <yanmin_zhang@linux.intel.com>,
       Peter Zijlstra <a.p.zijlstra@chello.nl>,
       Sheng Yang <sheng@linux.intel.com>, linux-kernel@vger.kernel.org,
       kvm@vger.kernel.org, Marcelo Tosatti <mtosatti@redhat.com>,
       Jes Sorensen <Jes.Sorensen@redhat.com>, Gleb Natapov <gleb@redhat.com>,
       Zachary Amsden <zamsden@redhat.com>, ziteng.huang@intel.com,
       Arnaldo Carvalho de Melo <acme@redhat.com>,
       "Fr?d?ric Weisbecker" <fweisbec@gmail.com>,
       Gregory Haskins <ghaskins@novell.com>
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On Tue, Mar 23, 2010 at 2:21 PM, Joerg Roedel <joro@8bytes.org> wrote:
> On Tue, Mar 23, 2010 at 06:39:58PM +0200, Avi Kivity wrote:
>> So, two users can't have a guest named MyGuest each?  What about
>> namespace support?  There's a lot of work in virtualizing all kernel
>> namespaces, you're adding to that.
>
> This enumeration is a very small and non-intrusive feature. Making it
> aware of namespaces is easy too.

an outsider's comment: this path leads to a filesystem... which could
be a very nice idea.  it could have a directory for each VM, with
pseudo-files with all the guest's status, and even the memory it's
using.  perf could simply watch those files.   in fact, such a
filesystem could be the main userleve/kernel interface.

but i'm sure such a layour was considered (and rejected) very early in
the KVM design.  i don't think there's anything new to make it more
desirable than it was back then.


-- 
Javier