linux-kernel - Re: [RFC] Unify KVM kernel-space and user-space code into a single project

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Message-ID: <4BAA393A.9000105@redhat.com>
Date:	Wed, 24 Mar 2010 18:09:30 +0200
From:	Avi Kivity <avi@...hat.com>
To:	Joerg Roedel <joro@...tes.org>
CC:	Anthony Liguori <anthony@...emonkey.ws>,
	Ingo Molnar <mingo@...e.hu>,
	Pekka Enberg <penberg@...helsinki.fi>,
	"Zhang, Yanmin" <yanmin_zhang@...ux.intel.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Sheng Yang <sheng@...ux.intel.com>,
	linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
	Marcelo Tosatti <mtosatti@...hat.com>,
	Jes Sorensen <Jes.Sorensen@...hat.com>,
	Gleb Natapov <gleb@...hat.com>, ziteng.huang@...el.com,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Fr?d?ric Weisbecker <fweisbec@...il.com>,
	Gregory Haskins <ghaskins@...ell.com>
Subject: Re: [RFC] Unify KVM kernel-space and user-space code into a single
 project

On 03/24/2010 05:59 PM, Joerg Roedel wrote:
>
>    
>>> I am not tied to /sys/kvm. We could also use /proc/<pid>/kvm/ for
>>> example. This would keep anything in the process space (except for the
>>> global list of VMs which we should have anyway).
>>>
>>>        
>> How about ~/.qemu/guests/$pid?
>>      
> That makes it hard for perf to find it and even harder to get a list of
> all VMs.

Looks trivial to find a guest, less so with enumerating (still doable).

>   With /proc/<pid>/kvm/guest we could symlink all guest
> directories to /proc/kvm/ and perf reads the list from there. Also perf
> can easily derive the directory for a guest from its pid.
> Last but not least its kernel-created and thus independent from the
> userspace part being used.
>    

Doesn't perf already has a dependency on naming conventions for finding 
debug information?

-- 
error compiling committee.c: too many arguments to function

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