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    SubjectRe: [Tux3] Tux3 report: A Golden Copy
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    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


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