From owner-freebsd-hackers@FreeBSD.ORG  Mon Mar 24 14:06:38 2008
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 1F38E1065740
	for <freebsd-hackers@freebsd.org>; Mon, 24 Mar 2008 14:06:38 +0000 (UTC)
	(envelope-from jhb@freebsd.org)
Received: from elvis.mu.org (elvis.mu.org [192.203.228.196])
	by mx1.freebsd.org (Postfix) with ESMTP id 138A28FC12
	for <freebsd-hackers@freebsd.org>; Mon, 24 Mar 2008 14:06:37 +0000 (UTC)
	(envelope-from jhb@freebsd.org)
Received: from zion.baldwin.cx (66-23-211-162.clients.speedfactory.net
	[66.23.211.162]) by elvis.mu.org (Postfix) with ESMTP id 4AD591A4D82;
	Mon, 24 Mar 2008 07:06:37 -0700 (PDT)
From: John Baldwin <jhb@freebsd.org>
To: freebsd-hackers@freebsd.org
Date: Mon, 24 Mar 2008 09:38:29 -0400
User-Agent: KMail/1.9.7
References: <200803221520.m2MFK7TM059293@lurza.secnetix.de>
In-Reply-To: <200803221520.m2MFK7TM059293@lurza.secnetix.de>
MIME-Version: 1.0
Content-Type: text/plain;
  charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
Message-Id: <200803240938.29781.jhb@freebsd.org>
Cc: Oliver Fromme <olli@lurza.secnetix.de>
Subject: Re: vkernel & GSoC, some questions
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>, 
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 24 Mar 2008 14:06:38 -0000

On Saturday 22 March 2008 11:20:07 am Oliver Fromme wrote:
> M. Warner Losh wrote:
>  > In message: <200803191633.m2JGXuBt088272@lurza.secnetix.de>
>  >
>  >             Oliver Fromme <olli@lurza.secnetix.de> writes:
>  > : The vkernel feature has certainly benefits, e.g. the fact
>  > : that you can attach to it with standard gdb and use the
>  > : familiar debugging facilities, which can attract more
>  >
>  > Can't you say qemu -s and attach gdb to that port as well?
>
> Good point.  According to the manpage it would work,
> but I've never tried it myself.  (I'm rather careful
> with the qemu manpage because it also contains a few
> things that only work on Linux.)

It works great and is how I debugged the recent GPT and BTX boot loader stuff.  
I haven't tried debugging the loader binary itself, but that should work.

-- 
John Baldwin