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Date: Wed, 24 Mar 2010 10:59:05 +0200
From: Avi Kivity <avi@redhat.com>
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To: Andi Kleen <andi@firstfloor.org>
CC: Joerg Roedel <joro@8bytes.org>, 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>
Subject: Re: [RFC] Unify KVM kernel-space and user-space code into a single
 project
References: <20100322173400.GB15795@elte.hu> <4BA7B9E0.5080009@codemonkey.ws> <20100322192739.GE21919@elte.hu> <4BA7C96D.2020702@redhat.com> <4BA7E9D9.5060800@codemonkey.ws> <20100323140608.GJ1940@8bytes.org> <4BA8EEDE.8070309@redhat.com> <20100323182153.GA14800@8bytes.org> <87hbo6fgpy.fsf@basil.nowhere.org> <4BA9B454.5090908@redhat.com> <20100324073854.GD20695@one.firstfloor.org>
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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