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    SubjectRe: linux-next: add utrace tree

    tromey wrote:

    > [...]
    > In non-stop mode (where you can stop one thread but leave the others
    > running), gdb wants to have the breakpoints always inserted. So,
    > something must emulate the displaced instruction.

    This sounds like the sort of thing that kernel kprobes do, which the
    uprobes patch does for userspace. The gdbstub prototype can use
    uprobes for such "displaced" breakpoints, and single-step-out-of-line
    to execute them on a few platforms like x86-*. This is already
    prototyped / working. (gdbstub currently restricts itself to
    single-threaded programs only, but that's another todo.)

    - FChE

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