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Message-Id: <200812310000.55256.phillips@phunq.net> Date: Wed, 31 Dec 2008 00:00:54 -0800 From: Daniel Phillips <phillips@...nq.net> To: tux3@...3.org Cc: sniper <s3c24xx@...il.com>, linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [Tux3] Tux3 report: A Golden Copy 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 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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