From mboxrd@z Thu Jan 1 00:00:00 1970 From: sniper Subject: Re: [Tux3] Tux3 report: A Golden Copy Date: Wed, 31 Dec 2008 16:16:41 +0800 Message-ID: <9bd6b5360812310016k7a75bf8fpbb49de8d9799cbdf@mail.gmail.com> References: <200812301935.49303.phillips@phunq.net> <9bd6b5360812302334t2c6aca67s62ba54438d2bda9e@mail.gmail.com> <200812310000.55256.phillips@phunq.net> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: tux3@tux3.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org To: "Daniel Phillips" Return-path: Received: from rv-out-0506.google.com ([209.85.198.232]:52419 "EHLO rv-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752101AbYLaIQn (ORCPT ); Wed, 31 Dec 2008 03:16:43 -0500 In-Reply-To: <200812310000.55256.phillips@phunq.net> Content-Disposition: inline Sender: linux-fsdevel-owner@vger.kernel.org List-ID: On Wed, Dec 31, 2008 at 4:00 PM, Daniel Phillips wrote: > On Tuesday 30 December 2008 23:34, sniper wrote: >> Great, I have mounted tux3 filesystem under UML with stuffs in this mail, >> but I still can't debug it with gdb. Anyone gives me suggestion? > > You just have to give a "cont" command a bunch of times and you will Yes, it works now, Thanks. > eventually get to a command prompt. The reason for this is, uml uses > the segfault interrupt as part of its machine simulation, and there > is no exsiting way for uml and gdb to communicate in such a way that > uml can recognize that the interrupt came from its own code and filter > it. > > Jeff Dike is the expert on this, and Daniel Jacobowitz is the expert > on the gdb side. Fixing this would be a big effort, getting two complex > systems to cooperate better, with nontrivial API issues to solve. But > UML is such a wonderful kernel development tool that it might be worth > the effort. > > In the mean time, you could just tell gdb to mask off all segfaults, > but would be kind of problematic for debugging. > > Regards, > > Daniel >