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

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Message-ID: <4BA9D459.6070502@redhat.com>
Date:	Wed, 24 Mar 2010 10:59:05 +0200
From:	Avi Kivity <avi@...hat.com>
To:	Andi Kleen <andi@...stfloor.org>
CC:	Joerg Roedel <joro@...tes.org>,
	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>,
	Zachary Amsden <zamsden@...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 09:38 AM, Andi Kleen wrote:
>> If you're profiling a single guest it makes more sense to do this from
>> inside the guest - you can profile userspace as well as the kernel.
>>      
> I'm interested in debugging the guest without guest cooperation.
>
> In many cases qemu's new gdb stub works for that, but in some cases
> I would prefer instruction/branch traces over standard gdb style
> debugging.
>    

Isn't gdb supposed to be able to use branch traces?  It makes sense to 
expose them via the gdb stub then.  Not to say an external tool doesn't 
make sense.


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

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